Upload
dangthuy
View
217
Download
2
Embed Size (px)
Citation preview
2x500 MW, NNTPP, Neyveli
CONTRACT SPECIFICATION STEAM TURBINE GENERATOR PACKAGE – NTA2
TG Vol-IV, Section-08, UPS & Battery, Elect. – NTA2 Page 157
a) All equipment and materials will be designed, manufactured and
tested in accordance with the latest applicable Indian Standards (IS)
except where modified and/or supplemented by this specification. In
case Indian Standards are not available for any equipment, Standards
issued by IEC/BS/VDE/IEEE/NEMA or equivalent will be applicable.
b) Equipment and materials conforming to any other standard which
ensures equal or better quality may be accepted. In such case, copies
of the English version of the standard adopted will be submitted .
c) The electrical installation will meet the requirements of Indian
Electricity Rules as amended up to date and relevant IS Codes of
Practice. In addition, other rules or regulations applicable to the work
will be followed. In case of any discrepancy, the more restrictive rule
will be binding.
2.2 Annexures
2.2.1 All annexures appended to this specification will form part of this specification
and supplement the requirements specified herein.
2.2.2 This specification will be read and construed in conjunction with the drawings
and annexures to determine the scope of work and terminal points.
2.3 Completeness of supply
2.3.1 It is not the intent to specify completely herein all details of the equipment.
Nevertheless, the equipment will be complete and operative in all aspects and
will conform to the highest standard of engineering, design and workmanship.
2.3.2 Any material or accessory which may not have been specifically mentioned but
which is necessary or usual for satisfactory and trouble free operation and
maintenance of the equipment will be furnished.
2.3.3 The contractor will supply all brand new equipment and accessories as specified
herein.
2.4 Guaranteed Performance
2.4.1 The proposal data sheets given in another volume of this package specification
will be filled in without any ambiguity by typing in appropriate place on each
page.
2.5 Drawing Approval
2.5.1 Before starting manufacture of any equipment, the contractor will have to take
approval of relevant drawings and data from Owner/Consultant in writing.
2.5.2 Any manufacture done prior to the approval of drawings/data will be rectified in
accordance with the approved drawings/data by the contractor at his own cost
and the equipment will be supplied within the stipulated period.
2.6 Design Criteria
2.6.1 Design Basis
a) UPS System provides a regulated and uninterrupted single phase A.C.
power, within specified tolerances, to critical station loads during
normal and emergency operation.
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 421 of 495
2x500 MW, NNTPP, Neyveli
CONTRACT SPECIFICATION STEAM TURBINE GENERATOR PACKAGE – NTA2
TG Vol-IV, Section-08, UPS & Battery, Elect. – NTA2 Page 158
b) The UPS system excluding its battery will be installed indoors in A.C.
environment.
c) UPS system will be compatible for satisfactory and well-coordinated
operation with other related equipment as well as with input and output
systems.
d) Energizing or de-energizing any portion of the system serviced by the
UPS will not cause output changes which will affect the operation or
integrity of the remaining portions of the system in any way.
e) The equipment will be self-protecting against all A.C. and D.C.
transients, voltage surges, and steady state abnormal voltages and
currents.
f) The circuit protection will be coordinated with UPS short circuit
capacity and protective device characteristics so that a fault on any
circuit will result in minimum loss of function.
g) All non-interrupting components of UPS system will be capable of
withstanding the prevailing short circuit current without damage.
h) All circuit interrupting components will be capable of withstanding and
interrupting the prevailing short circuit currents without damage.
i) For continuous operation at specified ratings, temperature rise of the
various components of UPS system will be limited to the permissible
values stipulated in the relevant standards and/or this specification.
For selecting Battery capacity following data to be considered :
Maximum temperature : 50 °C
Minimum temperature : 8 °C
Battery backup time : 30 minutes
Design margin : 15%
Ageing compensation factor : 1
Reference standard for Battery
Sizing calculation : As per IEEE 446 Standard
k) UPS will have automatic on line battery health checking. It will have
connectivity with the plant DCS status monitoring.
l) The chargers, inverters, static switches, regulating transformers and
voltage stabilizers should be arranged in such a way that any
equipment will be fully isolated for maintenance without affecting in
any way the operation of other panels/ components.
m) In the A.C. Distribution Board, the contractor will provide 10% or
minimum one (1) no. spare feeder of each size and type of the outgoing
feeders.
n) The UPS system supplied will have provision to transfer UPS
parameter/data to DCS (Including SG & TG Integral Control System).
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 422 of 495
2x500 MW, NNTPP, Neyveli
CONTRACT SPECIFICATION STEAM TURBINE GENERATOR PACKAGE – NTA2
TG Vol-IV, Section-08, UPS & Battery, Elect. – NTA2 Page 159
Necessary data transfer software & hardware will be incorporated in
the system for this.
2.6.2 System Concept
a) 3 nos. independent A.C. power sources are available to the UPS
system. The system is so designed that its load will be served without
interruption as long as one of the above power sources is available
within specified limit of voltage and/or frequency.
The UPS will consist of two physically separate sets of equipment
streams consisting of the following:
i) Two sets of converters to convert incoming 415V, 3 Ph, 50 Hz
A.C. power to suitable D.C.
ii) Two sets of suitable Battery Bank to get charged by the above
referred converter and to feed the inverter described below.
iii) Two sets of inverters to take D.C. input from above referred
converter- Battery assembly output and to produce high quality
240V, 1Ph 50 Hz A.C. output power.
iv) Two sets of static switches, synchronizing circuit to parallel the
above-mentioned Inverter output and bypass stabilized power
stream.
v) One set of standby bypass stream consisting of suitable
transformers, Static voltage regulator etc. to produce regulated
240V, 1 Ph. 50 Hz A.C. power from the 415V, 3 Ph. 50 Hz A.C.
input from Station supply.
vi) One UPS A.C. power distribution board with suitable no. of
outgoing feeders.
Two sets of equipment streams as mentioned above will constitute the UPS
system.
One set of synchronizing equipment and high performance static switch will
parallel the above two streams and common output will be taken to loads
which can accept only single non-redundant power input source.
The system will ensure highest system availability around 99%.
b) Each of the two UPS streams will be of 100% capacity and will
normally work, each sharing 50% load. On failure of any stream, its
load gets automatically transferred to the other inverter through static
transfer switch.
c) If one UPS stream is out of service for any reason then the second UPS
stream will be working with 100% UPS load.
d) Inside each stream on failure of its converter/battery/inverter assembly
the standby A.C. source will back up to supply the 100% UPS load
automatically through static transfer switch.
2.6.3 Layout Criteria
a) The UPS system will be located indoor in Power House operating floor.
The inverter, static switches, chargers and distribution panels will be located in
the UPS room. The batteries will be located in a separate battery room as
shown in enclosed machine location plans.
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 423 of 495
2x500 MW, NNTPP, Neyveli
CONTRACT SPECIFICATION STEAM TURBINE GENERATOR PACKAGE – NTA2
TG Vol-IV, Section-08, UPS & Battery, Elect. – NTA2 Page 160
The charger, inverters, static switches, regulating transformers & voltage
stabilizers should be arranged in such a way that any equipment can be fully
isolated for maintenance without affecting in any way the operation of other
panels/components.
The equipment of the two UPS streams will be physically isolated with
reasonable space between two installations.
b) Battery room ventilation will be under the scope of the Contractor.
c) Sufficient clear space will be provided for comfortable attending and
removal of individual cells.
d) Sufficient clear space will be kept in the battery room to accommodate
a battery of identical capacity in future.
e) Battery room will be acid proof type.
3 SPECIFIC REQUIREMENTS
3.1 Static Inverter
a) The static inverters will be static type consisting of IGBT PWM type
inverter, static filters, integrated control modules including necessary
oscillators, voltage regulators, current limiting and surge suppression.
b) The inverter equipment will include all necessary circuitry and devices to
conform requirements like voltage regulation, soft start, transient
recovery, protection, automatic synchronisation, wave shaping etc. as
specified herein.
c) Upon transfer of full load, the inverter output voltage will not drop
below 80% of nominal voltage during the first half cycle after transfer
and 90% of nominal voltage in the next half cycle. The recovery to
within ± 2% of voltage will be in less than 50 milli-seconds.
d) On occurrence of a fault in branch circuit, the inverter will be capable of
clearing the highest rated branch circuit fuse in 4 milli-seconds or less.
e) The inverter will be protected against overload, short circuit, 100% loss
of load, as well as excursions, loss or restoration of D.C. input voltage
and synchronising voltage. The overload capacity will be 125% for 10
mins., 150% for 60 secs. and 300% for 4 msecs.
f) The D.C. input current will never exceed twice the full load current
except for a short circuit within the inverter.
g) For any value of the load and load power factor drawn by the equipment
served, the inverter will not impose on D.C. source any voltage
oscillations in excess of 5 volts (RMS total all frequencies) or any
current oscillations in excess of 3 percent (RMS total all frequencies) of
the D.C. current at full load.
h) The inverter will be self protecting against A.C. and D.C. Transients,
voltage surges and steady state abnormal voltage and currents likely to
be encountered in the plant.
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 424 of 495
2x500 MW, NNTPP, Neyveli
CONTRACT SPECIFICATION STEAM TURBINE GENERATOR PACKAGE – NTA2
TG Vol-IV, Section-08, UPS & Battery, Elect. – NTA2 Page 161
i) Under voltage(u/v), Over voltage(o/v) and earth fault protections will be
provided for UPS (either separate relays or achieved electronically)
3.2 Automatic Synchronisation
a) Inverter equipment will include stable solid state oscillator devices
designed to automatically maintain the inverter output in phase and in
synchronism with the stand-by A.C. source.
b) Facility will be provided for automatic transfer to internal oscillator
operation when the stand-by source frequency is beyond specified limits
and the frequency will be automatically controlled within 50 Hz plus or
minus 0.5 Hz when the inverter operates in this mode.
c) Retransfer to stand-by A.C. source for synchronisation will be automatic
after the stand-by source frequency is restored to permissible limits and
remains within this limit for an adjustable time delay period (up to 5
seconds).
d) Provision will be made for stepless adjustment of synch- disconnect
frequency range from 50 Hz ± 0.5 Hz to 50 Hz ± 2 Hz.
e) Automatic adjustment of phase relationship between inverter output
and stand-by A.C. source will be gradual at a controlled slow rate,
which will not exceed one hertz per second.
3.3 Static Transfer Switch
a) The static transfer switch will be solid-state type using SCR for
automatic/manual transfer of load from "inverter" to "stand-by" source
and vice-versa.
b) Stand-by source can be either of the inverter or A.C. source depending
on whether both the inverters are supplying 50% load each or one of
the inverter is carrying 100% load.
c) The transfer time including sensing will be less than 4 m.secs. Further
the transition will be make- before-break in both directions.
d) The capacity of static transfer switch will be equal to the continuous
full-load capacity of the inverter. The switch will be provided with
protective devices in both normal and alternate power source.
e) Static transfer switch will be furnished with contact to alarm failure of
the alternate source or opening of any fuse protecting the static switch.
f) Static transfer switch will include all necessary circuitry and devices to
meet the functional requirements of transfer initiation, transfer inhibit
and re-transfer back to normal as detailed below :
g) Transfer Initiation
i) The transfer of static switch from normal 'Inverter' position to
'stand-by' position will be initiated by one of the following
causes.
• Inverter failure and UPS system trouble.
• Inverter output voltage failure.
• Manual push button operation.
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 425 of 495
2x500 MW, NNTPP, Neyveli
CONTRACT SPECIFICATION STEAM TURBINE GENERATOR PACKAGE – NTA2
TG Vol-IV, Section-08, UPS & Battery, Elect. – NTA2 Page 162
ii) The UPS bus will be monitored by two voltage detectors. One
fast acting circuit will be used for detecting a complete and
instantaneous voltage loss while the other slower acting
averaging circuit with adjustable trip level will be employed to
detect voltage deviation beyond selected limits. Both voltage
detector circuits will automatically initiate operation of transfer
switch.
iii) The static switch will automatic transfer the load from inverter
to stand-by source when the maximum I2t capability of the
inverter is reached and when the inverter output drops below
90%.
h) Transfer Inhibit
Automatic or manual transfer from inverter to stand-by A.C. source vice
versa will be inhibited when the inverter frequency is not synchronised
to the alternate source.
i) Retransfer to Normal
i) The return to inverter mode will be manual in all cases.
ii) Manual transfer will be initiated by push button actuation.
3.4 Manual By-pass Switch
a) Manual by-pass switch is used to isolate any static transfer switch for
maintenance or repair without interruption to the UPS load.
b) The switch has also the facility of by-passing both the static transfer
switches during start-up at the option of the operator.
c) Switch contact will be make-before-break type.
d) The switch will have current rating equal to the full load inverter current
and necessary short time load carrying and interrupting capacity to meet
the requirement of UPS system.
e) Breakers may be used instead of By-pass switch maintaining the same
philosophy of operation.
3.5 Battery
a) General
i) The battery will be stationary Lead Acid ‘Plante’ type and will be
suitable for operating satisfactorily in humid and corrosive
atmosphere.
ii) The equipment will comply with the requirement of latest revision
of following standards:
IS:1652 : Specification for Stationary cells and Batteries, Lead Acid type with
plante +ve plates.
BS:6290 : Specification for Stationary cells and Batteries, Lead Acid type with
plante +ve plates
Specification of battery will be as given in Section 7 (Battery & battery charger)
3.6 Float-cum-Boost Charger
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 426 of 495
2x500 MW, NNTPP, Neyveli
CONTRACT SPECIFICATION STEAM TURBINE GENERATOR PACKAGE – NTA2
TG Vol-IV, Section-08, UPS & Battery, Elect. – NTA2 Page 163
3.6.1 Specification of Float cum booster charger will be as given in Section 7 (Battery
& battery charger)
3.7 Step-down transformer and Static voltage regulator (SVR)
a) A three phase to single phase transformer along with associated voltage
stabilizer will be furnished with the UPS system.
b) The transformer and SVR hall be sized for 100 per cent UPS load and
will coordinate with the largest branch circuit protection device for
feeder short circuit current without sacrificing voltage regulation.
c) The SVR will employ silicon solid state circuitry. It will maintain the
specified output voltage within +/- 1.5% through out the load variation
from 0 to 100% with maximum input voltage variation of +/- 10%. The
make and rating will be subject to Purchaser's approval.
3.8 A.C. Distribution Boards
a) The DB will have one section with MCCB as incomer and will have bus
healthy lamps, volt meter and ammeters. Outgoing feeders to the loads
will be protected by semiconductor fuses with fuse monitoring devices,
MCCBs and feeder ‘ON’ LED indication with glass fuse. Each load will be
fed by two independent feeders terminated into a change over switch at
the load point. The gland plate of the distribution board will be non-
magnetic type having thickness 3mm.
Interposing relays / transducers /potential free contacts required for
DCS (Including SG & TG Integral Control System) system will be
mounted on the UPS distribution board.
b) The distribution boards will be fixed type, of modular design in
freestanding gasketted sheet steel enclosure conforming to IP-54. Sheet
steel thickness will be 2 mm minimum.
c) Each module will be housed in a separate compartment complete with
individual front access door. Working height will be limited to 1800 mm
from floor level.
d) A full height vertical cable alley will be provided in each panel to
facilitate module wiring. The alley will be liberally sized and will have
removable cover at the front. Removable back covers will be provided at
the back of the panels.
e) Switches will be double pole, air break, heavy duty type, capable of
safely making and breaking the full load current of associate circuit.
f) Switch handle will have position indicator and provision of padlocking in
ON & OFF positions. Further it will be interlocked with access door for
safety.
g) Fuses will be HRC, preferably link type, design to permit easy & safe
replacement. 20% spare feeders will be provided in the DB. Visible
indication will be provided for indication of fuse.
h) Provision will be made for giving 2 feeders to NTA 1 and four (4)
feeders to NTA 3, besides own requirements.
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 427 of 495
2x500 MW, NNTPP, Neyveli
CONTRACT SPECIFICATION STEAM TURBINE GENERATOR PACKAGE – NTA2
TG Vol-IV, Section-08, UPS & Battery, Elect. – NTA2 Page 164
3.9 UPS Cabinets/Enclosures
a) The UPS system components will be housed in a sheet steel
freestanding IP-31 enclosure with all access from the front. Sheet steel
thickness will be 2 mm minimum.
b) The enclosure will consist of vertical cabinets housing modules in rack
type sub-assemblies, connected mechanically and electrically to form a
rigid, self-supporting, metal enclosed structure.
c) The modular units will be mounted in pull out and/or swing trays. Each
module will be capable of being easily removed to provide for the ready
inspection of major solid-state devices.
d) Vertical wiring trough will be provided for the entire height of the UPS
cabinet. Cable entry will be from bottom only.
e) Adequate ventilating louvers and screens will be provided. The top of
the panel will be protected by a suitable drip cover to prevent entrance
of falling liquid and foreign material.
f) If the equipment supplied requires forced air cooling, the cooling system
furnished will meet the following requirement :
i) Two (2) nos. 100% cooling fans will be provided for each vertical
panel.
ii) Completely independent duplicate protection, control and wiring
systems will be provided for the cooling fans for redundancy.
iii) The cooling fans will be powered from the output of the
associated inverter. Normally one fan will be running while the
other is on stand-by.
iv) Each cooling fan will be equipped with an airflow switch having an
alarm contact that closes upon failure of airflow.
3.10 Alarms
a) Solid state audio-visual annunciation system will be provided for
inverters, static transfer switch, battery, battery charger.
b) Alarm facia will be provided on each charger and inverter panel,
complete with proper actuating devices, circuitry and legends.
c) The arrangement will be such that on occurrence of a fault the
corresponding window will light up and stays lighted until the fault is
cleared and reset button pressed.
d) Each time a window lights up a master relay will get energized to
provide group alarm signals for remote DCS alarm system.
e) The requirements of indication/metering/alarms are given in the annexure
-B
f) Alarm contacts will be rated 0.5 A at 220 V DC and 5A at 240 V A.C.
g) Electrically independent, potential free alarm contacts for each of the
points mentioned in Annexure-B will be wired up to the terminal block
for Purchaser's use.
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 428 of 495
2x500 MW, NNTPP, Neyveli
CONTRACT SPECIFICATION STEAM TURBINE GENERATOR PACKAGE – NTA2
TG Vol-IV, Section-08, UPS & Battery, Elect. – NTA2 Page 165
DCS Interface
Suitable soft link to be provided for interfacing with DCS for monitoring
and control.
3.11 Lamp / Space Heaters / Receptacles
a) The panels will be provided with :
i) Internal illumination lamp with door switch.
ii) Space heater with thermostat control.
iii) 3-pin 6A receptacle with plug.
b) Lamp, heater and receptacle circuits will have individual switch fuse
units.
3.12 Wiring / Cabling
a) The panels will be completely wired up. All wiring will be done with
flexible, 1100V grade, PVC insulated wires with stranded 2.5 Sq.mm
copper conductors and routed through wiring troughs. Each wire will be
ferruled by plastic tube with indelible ink print at both end having
terminal block No., terminal number as per approved wiring diagram.
b) Panels will have removable 3mm. gland plate for cable entry. All
incoming/outgoing cables will be terminated in suitable terminal block.
c) Control terminal blocks will be box-clamp type, minimum 10 Sq.mm.
20% spare terminals will be furnished.
3.13 Nameplate
a) Engraved nameplates will be provided for each panel and for each
equipment/device mounted on it.
b) The material will be anodised aluminium / lamicoid, 3 mm thick, with
white letters on black background.
c) Nameplates will be held by self-tapping screws. The size of nameplates
will be approximately 20 mm x 75 mm for equipment and 40 mm x 150
mm for panels.
d) Nameplates for panels will be provided both on the front and rear.
e) Control and meter selection switches will have integral nameplates.
Nameplates for all other devices will be located below the respective
devices.
f) Instruments and devices mounted on the face of the panels will also be
identified on the rear with the instrument/device number. The number
may be painted on or adjacent to the instrument or device case.
g) Caution notice on suitable metal plate will be affixed at the back of each
panel.
3.14 Grounding
a) Normal 3-phase A.C power supply will be grounded at the source. For
grounding other than this, isolation transformer will be furnished with
the U.P.S.
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 429 of 495
2x500 MW, NNTPP, Neyveli
CONTRACT SPECIFICATION STEAM TURBINE GENERATOR PACKAGE – NTA2
TG Vol-IV, Section-08, UPS & Battery, Elect. – NTA2 Page 166
b) The inverter D.C. input and A.C. output will be electrically isolated from
each other and from cabinet ground.
c) Panels will have fully rated ground bus with two ground terminals, one
at each end.
d) Each terminal will comprise two-bolt drilling M10 G.I. bolts and nuts to
receive Purchaser's ground connection of 50 x 6 mm G.S. flat.
e) Separate electronic grounding will be provided for each UPS system.
3.15 Tropical protection
a) All equipment accessories and wiring will have fungus protection,
involving special treatment of insulation and metal against fungus
insects and corrosion.
b) Screens of corrosion resistant material will be furnished on all ventilating
louvers to prevent the entrance of insects.
3.16 Painting
a) The panels will be finished in light grey shade (shade 631 of IS-5) with
two coats of synthetic enamel paint. The panels will have a matt finish
to prevent any glare from surface due to illumination.
4 TESTS
All equipment and components thereof will be subject to shop tests as per
relevant IEC/BIS Standards. The tests will include, but will not be limited to :
4.1 Tests on Battery
4.1.1 Tests on battery will be as indicated in Section 7 (Battery & battery charger)
4.2 Tests on battery charger
4.2.1 Tests on battery charger will be as indicated in Section 7 (Battery & battery
charger)
4.3 Tests on UPS System
a) Type & routine test for various components.
b) Burning test on PCBS - Assembled PCBS will be tested at 70 Deg.C for
72 hours in loaded condition.
c) Rapid temperature cycling test at 70 Deg.C and 0 Deg.C for 30 minutes
at each temperature - 5 such cycles.
d) Functional tests to demonstrate compliance with all specified
requirements and published. Specifications such as frequency,
regulation, voltage regulation, current limiting, fuse clearing capability of
inverters, demonstration of phase and frequency control of inverter for
synchronisation with range of adjustments transfer and retransfer of
static switches under influence of under voltage and over current, tests
on chargers, batteries and other system component to confirm
compliance with specification.
4.4 TYPE TEST
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 430 of 495
2x500 MW, NNTPP, Neyveli
CONTRACT SPECIFICATION STEAM TURBINE GENERATOR PACKAGE – NTA2
TG Vol-IV, Section-08, UPS & Battery, Elect. – NTA2 Page 167
4.4.1 Type test certificates of any equipment will be furnished, if so desired by
the Purchaser. Otherwise, the equipment will have to be type tested, free of
charge, to prove the design.
5 DRAWINGS, DATA & MANUALS
5.1 Drawings, data & manuals to be submitted.
5.1.1 Technical data sheet (in the specification format)
5.1.2 UPS panels, Battery Charger and Battery layout drawing with dimensions.
5.1.3 General Arrangement drawing of UPS panels.
5.1.4 Bill of Material.
5.1.5 Schematic drawing of UPS circuits.
5.1.6 Battery cell voltage characteristics and data for different discharge rates.
5.1.7 Technical leaflets on :
a) UPS System
b) Battery
c) Battery charger
d) Inverter
e) Static Switch
f) Manual bypass Switch
5.1.8 Duty cycle diagram and battery sizing calculation in the format of IEEE Standard.
5.1.9 Sizing calculation of UPS system, charger main equipment, viz. SCRs, rectifier
transformers etc.
5.1.10 Type test certificates for similar equipment.
5.2 To be submitted after Award of Contract
5.2.1 Manufacturer’s Quality approval plan & technical data sheet
5.2.2 Dimensional UPS, battery layout diagram in plan & section.
5.2.3 Connection details of take-off terminals.
5.2.4 Dimensional general arrangement drawings of UPS, battery charger, battery
clearly showing device dispositions, cable entry, space requirement, etc.
5.2.5 Sectional views of UPS System panels.
5.2.6 Panel foundation plan and loading.
5.2.7 UPS system schematics and wiring diagrams.
5.2.8 Test reports
5.2.9 Detailed bill of materials.
5.2.10 Any other relevant drawing or data necessary for satisfactory installation,
operation, and maintenance.
5.2.11 Cable schedule & Inter-connection charts.
5.2.12 Instruction manuals of UPS system
The manual will clearly indicate method of installation, check-ups, and tests to
be carried out before commissioning of the equipment.
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 431 of 495
2x500 MW, NNTPP, Neyveli
CONTRACT SPECIFICATION STEAM TURBINE GENERATOR PACKAGE – NTA2
TG Vol-IV, Section-08, UPS & Battery, Elect. – NTA2 Page 168
5.3 The contractor may note that the drawings, data and manuals listed above are
minimum requirement only. Contractor will ensure that all other necessary
write-ups, curves and information required to fully describe the equipment are
submitted .
6 SPECIAL TOOLS AND TACKLE
6.1 The contractor will quote any special tools and tackles needed for his
equipment or stated herein.
7 RATINGS & REQUIREMENTS
7.1 STATIC INVERTER
7.1.1 Application : UPS System for control system, DCS and other essential loads
7.1.2 Type : static IGBT PWM type
7.1.3 Duty : Continuous
7.1.4 Enclosure : Sheet steel, IP31
7.1.5 Cooling : Natural convection or forced cooling using redundant fans.
7.1.6 Ambient temperature : 50 Deg.C maximum, 8 Deg. C minimum
7.1.7 Inverter capacity (min) : 100 KVA
7.1.8 Overload capacity : 300% for 4 m secs.
150% for 60 secs
125% for 10 mins
110% for continuous
7.1.9 Voltage
a) Inverter input, Battery output : To be decided by the contractor
b) Nominal output : 240 V, 50 Hz, 1-phase
7.1.10 Voltage Regulation :
a) Steady state (0-100% load
at all input voltages and all
power factors)
: ± 1.5%
b) Transient voltage
(On application or removal
of 100% load)
: ± 10%
c) Time to recover from
transient to normal voltage
: 50 milliseconds.
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 432 of 495
2x500 MW, NNTPP, Neyveli
CONTRACT SPECIFICATION STEAM TURBINE GENERATOR PACKAGE – NTA2
TG Vol-IV, Section-08, UPS & Battery, Elect. – NTA2 Page 169
7.1.11 Wave form :
a) Nominal frequency : 50 Hz
b) Frequency range for all
conditions of input
supplies, loads and
temperature occurring
simultaneous or in any
combination (automatically
controlled)
: ± 0.05 Hz.
c) Synchronisation limits (for
maintenance of
synchronism between
inverter and standby A.C
source)
: 49 Hz to 51 Hz (factory set)
d) Field adjustment range for
(c) above
: 50+_ 0.05 Hz to 50+_ 2 Hz
e) Total Harmonic Content : 5% maximum at rated load
f) Harmonic content for any
single harmonic
: 3% maximum
7.1.12 Rated output current at rated output voltage with current limit not operating
a) Current : 200%
b) Duration : 100 milliseconds.
7.1.13 Efficiency at full load : 90% or better. (Watt output/watt input)
7.1.14 SCR derating from peak voltage and peak rating : 50%
7.1.15 Short time rating : 1 second for short circuit at inverter output terminals
7.2 STATIC SWITCH
7.2.1 Type : Solid-state, SCR
7.2.2 Duty : Continuous
7.2.3 Enclosure : Sheet Steel, IP31
7.2.4 Cooling : Natural convection or forced cooling--using redundant fans
7.2.5 Ambient Temperature : 50 Deg.C
7.2.6 Capacity
a) Continuous : Equal to full load capacity of the inverter.
b) Overload : 300% for 4 m secs.
150% for 60 secs
125% for 10 mins
110% for continuous
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 433 of 495
2x500 MW, NNTPP, Neyveli
CONTRACT SPECIFICATION STEAM TURBINE GENERATOR PACKAGE – NTA2
TG Vol-IV, Section-08, UPS & Battery, Elect. – NTA2 Page 170
c) Peak : 1000% of continuous rating for 5 cycle.
7.2.7 Normal Voltage : 240V, 50 Hz, 1-phase.
7.2.8 Transient Voltage Tolerance : 340V peak above the nominal line voltage.
7.2.9 Transfer Time : less than 4 m secs.
7.2.10 Short time rating : Short circuit rating of the inverter for 1 second and
150% of Full load current for 2 minutes.
7.3 MANUAL BY-PASS SWITCH/BREAKER
7.3.1 Type : Maintained, make before break.
7.3.2 Voltage : 600V
7.3.3 Rated Current : To meet the requirement as specified in clause no.:
7.3.4 Short time rating : Short circuit rating of the inverter for 1 second and
150% of Full load current for 2 minutes.
7.4 BATTERY
7.4.1 Application : UPS Battery
7.4.2 Ambient Temperature :
a) Maximum : 50 Deg.C
b) Minimum : 8 Deg.C.
7.4.3 Type : Lead acid ‘Plante’ type
7.4.4 Nos. of Cells per Battery : Min 180
7.4.5 Battery nominal voltage : 360 V above
7.4.6 Battery capacity in AH at 27 °C for 5 hr. discharge and end cell voltage of
1.1 Volt/Cell : Contractor to compute considering 100% UPS
load for 30 minutes. For 10 hrs. discharge end cell voltage will be 1.85v/cell for Lead
Acid type.
7.4.7 Method of working
a) Float charge (Normal) : 2.18 Volt / Cell
b) Boost charge : 2.75 Volts/Cell (After complete discharge)
7.4.8 Mounting : Wooden racks
7.4.9 Connection : Cables
7.4.10 Battery Size (AH Capacity) : 500 AH (Minimum)
7.5 BATTERY CHARGER
7.5.1 Charger : Float + Float-cum-Boost
7.5.2 Type : Solid-state, full wave, fully controlled. 3 Phase Bridge.
7.5.3 Duty : Continuous
7.5.4 Enclosure : Sheet Steel, IP31
7.5.5 Cooling : Natural convection or forced cooling using redundant fans.
7.5.6 Ambient Temperature : 50 Deg.C
7.5.7 A.C. input :
a) Supply : 415V, 3-phase ,50 Hz, 3 wire
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 434 of 495
2x500 MW, NNTPP, Neyveli
CONTRACT SPECIFICATION STEAM TURBINE GENERATOR PACKAGE – NTA2
TG Vol-IV, Section-08, UPS & Battery, Elect. – NTA2 Page 171
b) Voltage variation : ±10%
c) Frequency variation : ± 5%
d) Combined volt frequency
variation : 10% (absolute sum)
e) Short-circuit level : 50 KA
f) System earthing : Unearthed
7.5.8 D.C. output : 100% UPS load plus restoring fully discharged
battery to full charge condition in 8 hours.
7.5.9 Blocking Diode, Peak inverse
voltage : 800 V (minimum)
7.5.10 Performance Requirement
a) The output voltage of the charger will be regulated within ± 1% of the set
value for any load variation from 0 to 100% and A.C input voltage and
frequency variation as indicated above in 5.07.00
b) The ripple content in charger D.C. output will be limited to less than ±
1% with battery and less than ± 2% without battery.
7.6 DISTRIBUTION BOARDS
7.6.1 Type : Fixed, Modular.
7.6.2 Enclosure : Sheet Steel, IP54
7.6.3 Mounting : Free standing ( can be attended from both front & back)
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 435 of 495
2x500 MW, NNTPP, Neyveli
CONTRACT SPECIFICATION STEAM TURBINE GENERATOR PACKAGE – NTA2
TG Vol-IV, Section-08, UPS & Battery, Elect. – NTA2 Page 172
ANNEXURE -1
THE ALARM POINTS TO BE PROVIDED ON UPS
SL. NO. UPS ALARMS
1.0 AC SUPPLY FAILURE
2.0 DC VOLTAGE LOW
3.0 DC VOLTAGE HIGH
4.0 DC SYSTEM GROUND
5.0 CHARGER OVERLOAD
6.0 SCR FUSE BLOWN
7.0 FILTER FUSE BLOWN
8.0 DC OUTPUT FUSE BLOWN
9.0 FLOAT BUS OVER / UNDER VOLTAGE
10.0 BOOST BUS OVER VOLTAGE
11.0 BOOST OVER CURRENT FOR EACH CHARGER
12.0 FAILURE OF TYRISTOR / DIODES FOR EACH CHARGER
13.0 FAILURE OF BLOCKING DIODES
14.0 OUTPUT MCCB OPEN FOR EACH CHARGER
15.0 BATTERY MCCB OPEN
16.0 BATTERY CHARGING/DISCHARGING
LED LAMPS INDICATIONS IN FCBC CUBICLE
1.0 FLOAT CUM BOOST CHARGER
2.0 MAINS AC AVAILABLE
3.0 DC OUTPUT AVAILABLE
4.0 CHARGER IN FLOAT MODE
5.0 CHARGER IN BOOST MODE
6.0 CHARGER TRIPPED ON FAULT
7.0 SELECTED FOR RESERVE OPERATION
INDICATING METERS
ALL INDICATING METERS WILL BE 96x96 mm SWITCHBOARD TYPE, WITH 250 DEG.,
ANTIGLARE GLASS, ±2% ACCURACY WITH ZERO ADJUSTER ON THE FRONT.
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 436 of 495
2x500 MW, NNTPP, Neyveli
CONTRACT SPECIFICATION STEAM TURBINE GENERATOR PACKAGE – NTA2
TG Vol-IV, Section-08, UPS & Battery, Elect. – NTA2 Page 173
ANNEXURE -2
SET OF ACCESSORIES TO BE PROVIDED FOR EACH BATTERY BANK
SL. NO. ACCESSORIES/DEVICES QUANTITY (Nos.)
1.0 HYDROMETER 2 NOS.
2.0 SET OF HYDROMETER SYRINGES SUITABLE FOR THE
VENT HOLES IN DIFFERENT CELLS
2 NOS.
3.0 THERMOMETER FOR MEASURING ELECTROLYTE
TEMPERATURE
5 NOS.
4.0 SPECIFIC GRAVITY CORRECTION CHARTS 2 NOS.
5.0 WALL MOUNTING TYPE HOLDER FOR HYDROMETER AND
THERMOMETER
2 NOS.
6.0 CELL TESTING VOLTMETER (3-0-3 V) 2 NOS.
7.0 ALKALI MIXING JAR 1 NO.
8.0 ACID MIXING JAR 1 NO.
9.0 RUBBER APRON 2 NOS.
10.0 PAIR OF RUBBER GLOVES 2 NOS.
11.0 SET OF SPANNERS 2 NOS.
12.0 “NO SMOKING” NOTICE 2 NOS.
13.0 GOGGLES (INDUSTRIAL) 2 NOS.
14.0 INSTRUCTION CARD 10 NOS.
IN ADDITION TO THE ABOVE, ONE (1) NO. MINIMUM AND MAXIMUM TEMPERATURE
INDICATOR WILL BE SUPPLIED.
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 437 of 495
2x500 MW, NNTPS, Neyveli
CONTRACT SPECIFICATION
STEAM TURBINE GENERATOR PACKAGE - NTA2
TG, Vol-III, C&I-NTA2 Page 20
5. DESIGN CRITERIA
This section covers the general design criteria to be adopted in designing the Control & Instrumentation system for the TG Package.
5.1 General Requirements
5.1.1 Ambient Conditions
Instruments, devices and equipment for location in outdoor / indoor / air-conditioned areas shall be designed to suit the environmental conditions indicated below and shall be suitable for continuous operation in the operating environment of a Lignite fired Power plant and also during periods of air conditioning failure without any loss of function, or departure from the specification requirements covered under this specification.
Table 5.1
Protection Class Requirement
Ambient
Temperature
(outside
temperature)
Pressure Relative
Humidity Atmosphere
Required
Protection class
of panels
/cabinets /desks
to be provided
by Contractor
Outdoor Location
55 *C max Atmosphere 100%Max Air (dirty) IP 65
4 *C min Atmosphere
5% Min Air (dirty)
IP 65
Indoor Location
55 *C max Atmosphere 95% Max Air IP 54^^
4 *C min. Atmosphere 5% Min Air IP 5^^
Air-conditioned Area
24 +/- 2 *C normal
Atmosphere 95% Max Air IP 42
50 *C Max. ^ Atmosphere 5 % Min Air IP 42
^ During Air Conditioning failure ^^ For non-ventilated enclosures. For Ventilated enclosures, protection class shall be IP 42.
1. For hazardous areas the protection class shall be in accordance with the requirements of the relevant NEC code for the location. 2. For PCs, OWS, EWS, Servers, Printers and other peripherals, maximum temperature limit shall be 35 *C. For LVS the same shall be 25 *C & for UPS the same shall be 40 *C
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 438 of 495
2x500 MW, NNTPS, Neyveli
CONTRACT SPECIFICATION
STEAM TURBINE GENERATOR PACKAGE - NTA2
TG, Vol-III, C&I-NTA2 Page 154
12. SYSTEM CABINETS, PANELS & JUNCTION BOX
12.1 General Requirements
1. All control panels, system cabinets, local panels and local instrument enclosures, racks shall be furnished fully wired with necessary provision for convenience outlets, internal lighting, grounding, ventilation, space heating, anti-vibration pads and accessories as per IS:5039-1969 as required for completeness of the system.
2. All panels & cabinets shall be free standing type and have bottom entry for cables unless otherwise specified. The bottom of panels, cabinets, enclosures shall be sealed with bottom plate, compression cable glands and fire proof sealing material to prevent ingress of dust and propagation of fire. The Cabinets shall be designed for front & back access to components, terminals and wiring
3. The cabinets shall be provided with bottom glanding plate which shall be removable from inside and shall be provided with sufficient no. of knockouts. The details of knockouts shall be provided during detail engineering. All knockouts shall be provided with pluggable grommets.
4. The cabinets shall be of max. 2200mm height including base channel. The base channel shall be of 100 ISMC. All cabinets shall be of same height. Construction shall be modular. Contractor shall give the overall dimensions of each system and non-system cabinets in the format as per Schedule- 13 of this volume.
5. System & non-system cabinets shall have "look alike" appearance.
6. All electronic system cabinets shall be designed for 50 deg C operating under maximum ambient temperature without air conditioning system in service. Further cabinets, panels shall be so designed that temperature rise due to heat load does not exceed 10 deg. C above ambient temperature under all operating conditions. Necessary louvers, fans, limited packing density, adequate spacing between instruments, devices etc. shall be provided to maintain temperature rise within permissible limits.
7. Panels, cabinets enclosures wiring shall be arranged to enable the removal of modules/instruments and devices without unduly disturbing them.
8. All panels, cabinets, enclosures interiors shall be illuminated with rapid start fluorescent strip fixtures with door actuated switches. Door switch terminals shall be shrouded. All illuminated lights shall be provided with isolation switch in addition to door switch for maintenance & switching Off when not required. Illumination light shall be provided on both front & back sides if both sides are provided with equipments/instruments/terminal blocks requiring maintenance.
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 439 of 495
2x500 MW, NNTPS, Neyveli
CONTRACT SPECIFICATION
STEAM TURBINE GENERATOR PACKAGE - NTA2
TG, Vol-III, C&I-NTA2 Page 155
9. Sufficient number of power receptacles with disconnect switches shall be installed within panels, enclosure and racks.
10. The local instrument enclosures/racks shall be provided locally for mounting of electronic transmitters and switches, etc.
11. All panels, cabinets shall be properly grounded. The grounding scheme shall be as approved by the owner.
12. Exterior steel surface shall be sand blasted, ground smooth, filed, primed, sanded and smooth enamel painted to give a good finish subject to minimum paint thickness of 65-75 microns for sheet thickness of 3 mm and 50 microns for sheet thickness of 2mm. Minimum 2 coats of primer and two sprays of final finish colour shall be applied to all surfaces.
13. The colour of the panel’s interior shall be brilliant white in the panel interior. External colour of the panels will be as RAL 7032 for LIE/ LIR and RAL 7035 for control room system cabinets.
14. All panels, enclosures, system cabinets, marshalling cabinets shall be provided with a minimum of 20% spare terminations and system cabinets shall be provided with spare space for 20% additional modules fully wired with connectors etc. in excess of the total requirement of the system design when the cabinets are delivered. The spare space capacity shall be distributed evenly throughout the cabinets.
12.2 System Cabinets
Table 12.1
Specifications for System Cabinets
S.N Features Minimum Requirements
1 Application For housing Signal conditioning cards, input/output cards, processor cards, power supply units etc.
2 Location Indoor
3 Type Free standing Vertical type
4 Protection class IP-42
5 Material & Thickness CRCA steel/3mm
6 Doors Double door with neoprene gasket, Lockable,
7 Cable entry Bottom with fire proof compound thickness 50 mm for sealing
8 Anti vibration pad Required, 15mm
9 Painting Interior- Brilliant White
Exterior- RAL 7035
10 Cabinet Dimension To be decided during detail engineering
11 Grounding M6 earthing stud shall be provided
12 Ventilation Fans & louvers with brass mesh
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 440 of 495
2x500 MW, NNTPS, Neyveli
CONTRACT SPECIFICATION
STEAM TURBINE GENERATOR PACKAGE - NTA2
TG, Vol-III, C&I-NTA2 Page 156
S.N Features Minimum Requirements
required
13 Lighting rapid start fluorescent strip fixtures with door actuated switches required
14 Lifting arrangement Removable lifting eyebolts shall be provided
1. The racks in system cabinets shall have provision along with plug in sockets/back plane to house accommodate the spare slots/modules as specified elsewhere.
2. The system cabinets, racks in system cabinets, slots in the racks & the terminals shall have identification numbers. A stainless steel metal tag (plate) shall be fixed to the inside of the door & the layout of the racks, slots & details of the card type/service shall be inscribed on this metal tag.
3. Each cabinet shall be provided with one each 3 pin receptacles for 230 V, 1P, 50 Hz and receptacles for 24V DC.
4. One of the doors shall be provided with folder to keep the relevant engineering document of the cabinet.
5. All cabinets shall have common key for locks.
6. Door shall have concealed type of hinges with 120 degree swing.
7. Door latches shall be of the three-point type to ensure tight closing.
8. Separate Power & shield earthing bus shall be provided at the front & rear side of the cabinets. The earthing bus shall be isolated from panel body by suitable insulation material.
12.3 Marshalling Cabinets
Table 12.2
Specifications for Marshalling Cabinets
S.N Features Minimum Requirements
1 Application For termination of all cables originating from field.
2 Location Indoor
3 Type Free standing Vertical type
4 Protection class IP-44
5 Material & Thickness CRCA steel/ min. 2mm for panel sides & 3mm for gland plates
6 Doors Double door with neoprene gasket, Lockable,
7 Cable entry Bottom with fire proof compound thickness 50 mm for sealing
8 Terminal Blocks Rail mounted cage-clamp fused type
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 441 of 495
2x500 MW, NNTPS, Neyveli
CONTRACT SPECIFICATION
STEAM TURBINE GENERATOR PACKAGE - NTA2
TG, Vol-III, C&I-NTA2 Page 157
S.N Features Minimum Requirements
with LED indication suitable for conductor size up to 2.5 mm2 & fused type with LED indication for power supply (24 VDC, 230 V AC, 110 V AC etc.) for instruments & equipments.
9 Anti vibration pad Required, 15mm
10 Painting Interior- Brilliant White
Exterior- RAL 7035
11 Cabinet Dimension To be decided during detail engineering
12 Grounding M6 earthing stud shall be provided
13 Ventilation Fans & louvers with brass mesh required
14 Lighting rapid start fluorescent strip fixtures with door actuated switches required
15 Lifting arrangement Removable lifting eyebolts shall be provided
1. Separate Marshalling cabinets for the system shall be supplied for terminating all cables originating from the field and for distributing the signals to different functional panels and cubicles.
2. The terminal blocks shall be cage clamp type. Fused terminal blocks hinged at one end to facilitate easy isolation shall be provided wherever necessary. All cabinets shall be provided with spare terminals for the spare inputs/outputs as specified else where in the specification. The type of terminals for terminations from cabinets/panels shall match with the pre fabricated cables and pins supplied.
3. The terminals for field cables shall be arranged in a logical order of equipment/system wise and shall be worked out by Contractor, subject to approval by Owner / Consultant.
4. The marshalling cabinets, the terminal blocks, the terminals and the electronic hardware if any, shall have identification numbers.
5. Each cabinet shall be provided with one each 3 pin receptacles for 230 V, 1P, 50 Hz and receptacles for 24V DC.
6. One of the doors shall be provided with folder to keep the relevant engineering document of the cabinet.
7. All cabinets shall have common key for locks.
8. Door shall have concealed type of hinges with 120 degree swing.
9. Door latches shall be of the three-point type to ensure tight closing.
10. Separate Power & shield earthing bus shall be provided at the front & rear side of the cabinets. The earthing bus shall be isolated from panel body by suitable insulation material
12.4 Local Instrument Enclosure & Racks
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 442 of 495
2x500 MW, NNTPS, Neyveli
CONTRACT SPECIFICATION
STEAM TURBINE GENERATOR PACKAGE - NTA2
TG, Vol-III, C&I-NTA2 Page 158
1. Transmitters and switches, devices, etc. mounted in the field shall be suitably grouped together and mounted in local instruments enclosures in case of open areas of the plant and in local instrument racks in case of covered areas. These local instrument enclosures and racks shall be furnished as per the actual requirements finalised during detailed engineering stage. The exact grouping of instruments in a particular instrument enclosure/instrument rack shall be as finalised during detailed engineering stage subject to the owner's approval.
2. The local instrument enclosures shall be constructed of 2 mm sheet plate and shall be of modular construction with one or more modules and two end assemblies bolted together to form an enclosure. Vibration dampeners shall be installed for supporting each enclosure. The internal layout shall be such that the impulse piping/ blow down lines are accessible from back doors of the enclosure and the transmitters etc. are accessible from front side for easy maintenance. Gaskets shall be used between all mating sections to achieve protection class of IP-65.
3. The local instrument racks shall be free standing type constructed of suitable 3 mm thick channel frame of steel and shall be provided with a canopy to protect the equipment mounted in racks from falling objects, water etc. The canopy shall not be less than 3 mm thick steel, and extended beyond the ends of the rack. Bulk heads, especially designed to provide isolation from process line vibration shall be provided. Exact fabrication details shall be as finalized during detailed engineering stage. The junction box for racks also shall conform to IP 65 protection class.
4. Provision for continuous purging arrangement is to be made for all air and flue gas applications.
5. Each transmitter enclosure housing instruments i.e. for air and flue gas applications, requiring purge air for continuous air purging shall be provided with common purge air header, redundant air filter regulators of sufficient capacity, required pressure gauges, valves, fittings, SS tubing and individual purge meters for each purge line etc. as required.
6. As soon as the panel’s fabrication is over, Owner shall inspect the panels and further work on the panels, namely assembly, wiring and assembly of components shall be carried out only after the inspection.
7. The junction box of Local Instrument Enclosure & Racks shall be provided with hinged type door, latch for locking & gland plates for cable entry. All terminals in junction box shall be of rail mounted cage clamp type suitable for conductor size up to 2.5 Sq. mm.
12.5 Local Junction Box
Table 12.3
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 443 of 495
2x500 MW, NNTPS, Neyveli
CONTRACT SPECIFICATION
STEAM TURBINE GENERATOR PACKAGE - NTA2
TG, Vol-III, C&I-NTA2 Page 159
Specifications for Junction Box
S.N Features Minimum Requirements
1 No. of Ways 32 (2X16) with 20% spares terminals
2 Material & Thickness 3 mm thick Stainless steel
3 Protection class IP-65 for outdoor/ IP 55 for Indoor
4 Cable entry Bottom
5 Mounting Suitable for Wall/column/structures mounting
6 Terminal Blocks Rail mounted cage-clamp type suitable for conductor size up to 2.5 mm2
7 Grounding M6 earthing stud shall be provided
8 Gland plate Removable type
9 Door
Single Lockable door with gasket, able to open sideways, turn able hinge based, latch type lock without handle with common key.
10 Accessories
Tag plate, clamps, fixtures, bolts (SS), nuts (SS), Gasket (Neoprene), cable glands (SS), Lugs (Brass), Fire proof compound for sealing.
1. All JB’s for outdoor application shall be provided with individual canopies to prevent ingress of water.
2. All JB’ shall have provision to add 10% additional TB’s.
3. The marking on terminal strips shall correspond to the terminal numbering on wiring diagrams.
4. Separate Terminal blocks shall be used for Analog & Digital Signals & also for signals with different voltage levels.
5. The terminal blocks shall be arranged with at least 100 mm clearance between two sets of terminal blocks and between terminal blocks and junction box walls.
6. Separate shield bus shall be provided with screw connection for terminating cable shields.
7. All spare cable entries shall be provided with plugs.
8. All wires in JB shall be neatly dressed & ferruled.
9. Double deck type terminal block shall not be used.
Table 12.4
Specifications for Cable Glands
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 444 of 495
2x500 MW, NNTPS, Neyveli
CONTRACT SPECIFICATION
STEAM TURBINE GENERATOR PACKAGE - NTA2
TG, Vol-III, C&I-NTA2 Page 160
S.N Features Minimum Requirements
1 Type Double compression
2 Entry Thread ½“ NPT
3 Material Brass
4 Finish Cadmium Plated
5 Protection IP-54 or better
6 Accessories Neoprene gasket, Locknut, Reducer etc.
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 445 of 495
2x500 MW, NNTPS, Neyveli
CONTRACT SPECIFICATION
STEAM TURBINE GENERATOR PACKAGE - NTA2
TG, Vol-III, C&I-NTA2 Page 122
10. PROCESS CONNECTION PIPING
The Contractor shall provide, install and test all required material for completeness of impulse piping system, sample piping system and air piping system as per the requirements of this clause on as required basis for the connection of instruments and control equipment to the process and make the system complete . However, the Contractor shall furnish during detailed engineering all relevant drawings, material and technical specifications of various items service wise for Owner's/Consultant’s approval.
Control and instrument piping & connections shall generally be designed in accordance with the following criteria and these criteria shall be closely co-ordinated with Mechanical Piping Contractor / Erector to fulfill the Mechanical Design Criteria also. This is a guideline for Piping design & selection. OEM standard proven practice in these regard are also acceptable if it is complying with applicable international standard & specifications as described in this section.
1. Pressure connections and piping up to the root valves for all pressure indicators, pressure switches, pressure transmitters, etc., shall be as indicated for miscellaneous piping.
2. Temperature indicators, temperature controllers, temperature switches, temperature detectors, and test well connections shall be as follows:
• Main steam -- 40 mm NPT.
• Extraction steam -- 40 mm NPT.
• Boiler feed water -- 32 mm NPT.
• Reheat steam -- 40 mm NPT.
• Duct temperatures -- 25 mm NPT.
• All others -- 19 mm NPT.
3. Flow transmitter connections and piping up to the root valves shall be 25 mm for all piping except orifice flanges, where 15 mm piping and valves shall be used.
4. Level switch connections and piping up to root valves shall be 25mm.
5. Level controllers and level transmitters of the displacement type shall have connections and piping up to root valves of 50 mm.
6. Level controllers and level transmitters of the differential pressure type shall have connections and piping up to root valves of 25 mm.
7. Instrument columns at tanks and pressure vessels shall generally be 65 mm minimum.
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 446 of 495
2x500 MW, NNTPS, Neyveli
CONTRACT SPECIFICATION
STEAM TURBINE GENERATOR PACKAGE - NTA2
TG, Vol-III, C&I-NTA2 Page 123
A. Design Pressure and Temperature
Instrument primary piping design pressure and temperature shall be selected consistent with the requirements discussed in Mechanical Design Criteria of this specification, for the process pipe to which the instrument primary piping is connected. The following general criteria shall also apply:
Instrument primary piping for steam and other systems shall be designed for 1-½ times the maximum sustained process pressure and temperature (plus 20°C).
B. Sizes of Instrument Primary Piping
Instrument primary piping shall not be smaller than the connection at the process pipe root valve and/or the following (metric sizes are nominal):-
1. 20 mm for pressure measurement piping with a design pressure equal to or less than 42.0 bar and a design temperature equal to or less than 400°C.
2. 25 mm for pressure measurement piping with a design pressure greater than 42.0 bars or a design temperature greater than 400°C.
3. Flow and level measurement by differential pressure shall also use primary piping conforming to the above requirements; however, flange tap connections may be of 13 mm size.
4. Float actuated level switch devices shall be supported on connecting piping not smaller than 25 mm.
5. Level controllers and transmitters of the displacement float type shall be supported on connecting piping not smaller than 50 mm.
6. Instrument columns for float actuated level switches and displace-ment float devices shall be piping of not less than 65 mm.
7. Primary piping internal diameter shall not be less than 8 mm between the process connection and instrument blow down valve.
C. Materials for Instrument Primary Piping
Material for instrument primary piping connecting to the root valve shall preferably be the same as that used in the process system to which it is connected. Higher strength materials may be substituted in the interest of standardization; however, welding procedures at the point of joining the instrument primary piping to the process piping must be appropriate to the combination of materials involved. Copper may be used only for compressed air services that use copper process piping.
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 447 of 495
2x500 MW, NNTPS, Neyveli
CONTRACT SPECIFICATION
STEAM TURBINE GENERATOR PACKAGE - NTA2
TG, Vol-III, C&I-NTA2 Page 124
D. Insulation of Instrument Primary Piping
Instrument primary piping connecting to high temperature systems, which might become hot enough to injure personnel during blow down of the instrument line, shall be insulated where such hazard exists. Insulation materials, exterior finish, and metal lagging shall conform to the standards adopted for the process piping.
All materials supplied shall be suitable for intended service, process, operating conditions and type of instruments used and shall fully conform to the requirements of this specification. The material offered by the Contractor shall be from reputed, proven manufacturer.
E. Process Connection Size
Size of tapping point, Stub No. and size of Root valves for different type
of measurements.
These shall be as follows:
Table 10.1
Process Connection Stub & Root valve
S. N.
Quantity
of root
valves
(Nos.)
Size of stub and root
valves Service condition
A. Pressure and Differential pressure measurement
1 2 25NB >=62 bar or 425degree C
2 1 15NB <62 bar and 425 degree C
B. Level Gauge and Switch
1 2 25 NB >= 62 bar or 425 degree C
2 1 25NB <62 bar and 425 degree C
C. Level Transmitter (Displacement Type)
1 2 40NB >=62 bar or 425degree C
2 1 40NB <62 bar and 425 degree C
D. Stand pipe for Level measuring instrument
1 2 80 NB >=62 bar or 425degree C
2 1 80 NB <62 bar and 425 degree C
E. Flow measurement
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 448 of 495
2x500 MW, NNTPS, Neyveli
CONTRACT SPECIFICATION
STEAM TURBINE GENERATOR PACKAGE - NTA2
TG, Vol-III, C&I-NTA2 Page 125
S. N.
Quantity
of root
valves
(Nos.)
Size of stub and root
valves Service condition
1 2 25NB >=62 bar or 425degree C
F. Level measurement
1 1 25NB <62 bar and 425 degree C
G. Sampling system measurement (system and water service)
1 2 25 NB >=62 bar or 425degree C
2 1 25 NB <62 bar and 425 degree C
10.1 Impulse Piping, Tubing, Fittings, Valves & Valve Manifolds
All impulse pipes shall be of seamless type conforming to ANSI B36.10 for schedule numbers, sizes and dimensions etc. The material of the impulse pipe shall be same as that of main process pipe. For various applications specification of impulse pipe materials and associated fittings and valves shall be as given in Table –10.2 (Process Connection Piping).
Table 10.2
Process Connection piping
S. N Service
Size Impulse
tube
material
Impulse
Pipe
material
Impulse line
fitting
material
valves
material
Pipe Tube ANSI rating ANSI
Rating
1
Main steam / Saturated steam
SCH.XXS 21.34mm OD
1.7 mm ODX 1.65HK
SS 316
ASTM-A-335-Gr-P-22 (alloy steel)
ASTM-A-182-Gr-F-22
ASTM-A-182-Gr-F-22
9000 LBS 2500 SPL. Class
2
Hot reheat / extraction to HPH
SCH.80 21.34mm OD
12.7 mm ODX 1.65mm THK
SS 316
ASTM-A-335-Gr-P-22 (alloy steel)
ASTM-A-182-Gr-F-22
ASTM-A-182-Gr-F-22
9000 LBS 2500 SPL. Class
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 449 of 495
2x500 MW, NNTPS, Neyveli
CONTRACT SPECIFICATION
STEAM TURBINE GENERATOR PACKAGE - NTA2
TG, Vol-III, C&I-NTA2 Page 126
S. N Service
Size Impulse
tube
material
Impulse
Pipe
material
Impulse line
fitting
material
valves
material
Pipe Tube ANSI rating ANSI
Rating
3
Cold reheat / extraction / heater drains / condensate system; aux. steam
SCH.80 21.34mm OD
12.7 mm ODX 1.65mm THK
SS 316
ASTM-A-106-Gr-B (carbon steel)
ASTM-A-105-Gr-II
ASTM-A-105-Gr-II
3000LBS 400LBS
4 Water system
SCH.80 21.34mm OD
12.7 mm ODX 1.65mm THK
SS316
ASTM-A-106-Gr-B (carbon steel)
ASTM-A-105-Gr-II
ASTM-A-105-Gr-II
3000LBS 400LBS
5. Instrument air system
SCH.40 21.34mm OD(pipe through out)
12.7 mm ODX 1.65mm THK
SS316
IS 1239 Heavy Class (Galvanisied)
ASTM-A-105-Gr-II
ASTM-A-105-Gr-II
3000LBS 150LBS
6. Service air system
SCH.40 21.34mm OD
12.7 mm ODX 1.65mm THK
SS 316
IS 1239 Heavy Class (Black)
ASTM-A-105-Gr-II
ASTM-A-105-Gr-II
3000LBS 150LBS
7. Vacuum
SCH.40 21.34mm OD
7 mm ODX1.65mm THK
SS 316
ASTM-A-106-Gr-B (carbon steel)
ASTM-A-105-Gr-II
ASTM-A-105-Gr-II
3000LBS 150LBS
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 450 of 495
2x500 MW, NNTPS, Neyveli
CONTRACT SPECIFICATION
STEAM TURBINE GENERATOR PACKAGE - NTA2
TG, Vol-III, C&I-NTA2 Page 127
S. N Service
Size Impulse
tube
material
Impulse
Pipe
material
Impulse line
fitting
material
valves
material
Pipe Tube ANSI rating ANSI
Rating
8. Make up water system
SCH.40 21.34mm OD
12.7 mm ODX1.65 mm THK
SS 316
ASTM-A-312-TP-316 (SS)
ASTM-A-182-Gr-IF6a
ASTM-A-182-Gr-IF6a
3000LBS 150LBS
Notes:-
1. Impulse pipe thickness will be selected as per ANSI B 36.10. based on the schedule indicated against each service.
2. Wherever impulse tubes are provided, all the fittings required for these shall be SS316.
The following guidelines shall also be considered along with the Table 10.1 &
10.2 for size, material and rating for impulse line/tube fittings and accessories:
a. Impulse line / tube fittings and accessories
1. Nipple shall be provided for root valve size more then ½ inch and the nipple size shall be same as the root valve size. Reducer / adepter shall be provided to suit instrument connection, where nipple, root valve size is more then ½ inch.
2. Bulk head fitting socket welded type to be provided at instrument rack / enclosure.
b. Fittings
1. All fittings except the last fitting connecting to the instrument shall be socket welded. The size of the fittings shall be same as the impulse line size.
2. The fitting connecting to the instrument shall have a size and thread to suit the instrument connection.
c. Drain
Drain shall be provided for all water / steam and non-inflammable / non-corrosive fluids only.
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 451 of 495
2x500 MW, NNTPS, Neyveli
CONTRACT SPECIFICATION
STEAM TURBINE GENERATOR PACKAGE - NTA2
TG, Vol-III, C&I-NTA2 Page 128
d. Drain Valve
1. Two numbers of globe drain valves shall be provided for process conditions of 425 degree C or 62 bar and higher.
2. One number globe drain valve shall be provided for process conditions of less than 425 degree C and 52 bar.
3. The valve size shall be same as impulse piping / tubing size.
e. Funnel with drain header
1. This shall be provided in the racks for blowing / draining out the process fluid in the impulse tubings.
2. The size of drain header shall be 1”
3. When instruments are mounted local to the tapping point and are not mounted in rack, or panel or enclosure. The drains shall be connected to the nearest floor level or plant drain.
f. Instrument Valves
1. Type of the valve shall be needle valve with built in drain valve.
2. Sizing of the valve shall be ½”.
g. Right / left threaded fittings
1. This shall be provided for installation / removal of instruments without disturbing the tubing / piping.
h. A suitable adapter shall be provided to install the instruments on ½” right-left threaded fittings.
i. A ½” vent line with a ½” isolation valve shall be provided in the instrument rack for air and compressible fluids or other wise if the installation call for eg., for liquid service where the transmitter is located at a higher elevation than the tapping point.
j. For air / flue gas measurement a drain pot with plug shall be provided in place of drain valves.
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 452 of 495
2x500 MW, NNTPS, Neyveli
CONTRACT SPECIFICATION
STEAM TURBINE GENERATOR PACKAGE - NTA2
TG, Vol-III, C&I-NTA2 Page 129
Stainless steel tube shall be provided inside enclosures and racks from tee connection to valve manifold and then to instrument. For high pressure/temperature applications (piping class A,B,C & D of the Table 10.1)the material shall be ASTM A 213 TP 316H and for other applications material shall be ASTM A 213 TP 316L. The wall thickness of the tube shall be in accordance with the ANSI B31.1 standard.
All fittings shall be forged steel and shall conform to ANSI B16.11. The material of forged tube fittings for shaped application (e.g. tee, elbow etc.) shall be ASTM A182 Gr. 316 H for high pressure/ temperature applications (as defined above) and ASTM A182 Gr. 316L for other applications. The material for bar stock tube fitting (for straight application) shall be 316 SS. Metal thickness in the fittings shall be adequate to provide actual bursting strength equal to or greater than those of the impulse pipe or SS tube, with which they are to be used.
The source shut-off (primary process root valve) and blow down valve shall be as per Table 10.1. The disc and seat ring materials of carbon steel and alloy steel valves shall be ASTM A-105 and ASTM A-182, Gr. F22, hard faced with stellite (minimum hardness - 350 BHN.) The surface finish of 16 RMS or greater is required in the area of stem packing. The valve design shall be such that the seats can be re-conditioned and stem and disc may be replaced without removing the valve body from the line.
The valve manifolds shall be of 316 SS with pressure rating suitable for intended application. 2 valve manifold and 3 valve manifold shall be used for pressure measurements using pressure transmitters/ pressure switches and differential pressure transmitters/ switches respectively. 5 valve manifold shall be used for remaining applications like DP, flow and level measurements.
For Pressure/D.P gauges in fluid application two-way globe valve on each impulse line to the instrument and in air/flue gas application two way gate valve on each impulse line to the instrument shall be provided near the instrument. These shall be in addition to the three way gauge cock provided along with the pressure/D.P gauges.
Table 10.3
Specification for Seamless SS Pipe
S.N Property Requirement
1 Reference ASTM A-312 TP-316
2 Material Grade TP-316
3 Type Seamless/Plain end
4 Size ½” NB
5 Schedule 40/60/80
6 Standard Length 5 metre
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 453 of 495
2x500 MW, NNTPS, Neyveli
CONTRACT SPECIFICATION
STEAM TURBINE GENERATOR PACKAGE - NTA2
TG, Vol-III, C&I-NTA2 Page 130
Table 10.4
Specification for Seamless SS Pipe Fittings
S.N Property Requirement
1 Reference ASTM A-182 F-316
2 End Connection Socket welded
3 Type Forged conforming to ANSI B16.11
4 Size ½” NB
5 Rating 3000/6000/9000 lbs
6 Type of Fittings Reducing coupling, Male-Female reducer, Straight coupling, Equal Tee, Three Piece Union, Elbow, Cap etc.
Table 10.5A
Specification for Seamless SS Tube (1/2”)
S.N Property Requirement
1 Reference ASTM A-213 TP-316
2 Material Grade TP-316
3 Type Cold Drawn annealed, pickled, passivated, descaled, hydraulically cleaned seamless tube.
4 Size ½” OD X 2.1 mm thick
5 Properties
Tube shall be free from scratches & suitable for bending & capable of being flared by hardened & tapered steel pin. The expanded tube shall show no crack or rupture. Hardness shall be RB 80
6 Test Pressure 400 Kg/Sq mm minimum
7 Tolerance +/- 0.13 mm for outside dia. +/- 15% for wall thickness
8 Test Flare, Hardness, Ball & Bubble test
9 Standard Length 5 metre
Table 10.5B
Specification for Seamless SS Tube (1/4”)
S.N Property Requirement
1 Reference ASTM A-269 TP-316
2 Material Grade TP-316
3 Type Cold Drawn annealed, pickled, passivated, descaled, hydraulically cleaned seamless tube.
4 Size 1/4” OD X 1.2 mm thick
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 454 of 495
2x500 MW, NNTPS, Neyveli
CONTRACT SPECIFICATION
STEAM TURBINE GENERATOR PACKAGE - NTA2
TG, Vol-III, C&I-NTA2 Page 131
S.N Property Requirement
5 Properties
Tube shall be free from scratches & suitable for bending & capable of being flared by hardened & tapered steel pin. The expanded tube shall show no crack or rupture. Hardness shall be RB 80
6 Test Pressure 400 Kg/Sq mm minimum
7 Tolerance +/- 0.13 mm for outside dia. +/- 15% for wall thickness
8 Test Flare, Hardness, Ball & Bubble test
9 Standard Length 5 metre
Table 10.6
Specification for Seamless SS Tube Fittings
S.N Property Requirement
1 Reference ASTM A-182
2 Material Grade SS 316 forged
3 Type Double ferrule double compression
4 Ferrule SS 316
5 Size To suit SS tubing & NPT end connection
6 Type of fittings
Male/Female connectors, elbow, Equal & Unequal Tee, Cross, Straight connector, bulk head unions, etc. as required to suit the installation.
Table 10.7
Specification for Instrument Valve Manifolds
S.N Property Requirement
1 Type Two valve manifold/Three Valve Manifold Five valve manifold
2 Mounting Remote 2” pipe mounting
3 Construction Single Block (Bar Stock)
4 Material Forged body & bonnet AISI 316 SS
5 Ports ½” NPT
6 Rating 420 Kg/ cm2 at ambient
7 Packing PTFE Wafer
8 Seat & Stem AISI 316 SS
9 Plug AISI 316 SS free to turn on stem/ 17-4 PH
10 Handle AISI 316 SS
11 Connection Straight
12 Accessories Plug for all ports Mounting Bracket, nut, bolts etc.
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 455 of 495
2x500 MW, NNTPS, Neyveli
CONTRACT SPECIFICATION
STEAM TURBINE GENERATOR PACKAGE - NTA2
TG, Vol-III, C&I-NTA2 Page 132
10.2 Air Supply Piping
1. All pneumatic piping, fittings, valves, air filter cum regulator and other accessories required for instrument air for the various pneumatic devices/ instruments shall be provided.
This will include as a minimum air supply to pneumatically operated control valves, actuators, instruments, continuous and intermittent purging requirements of Local Instrument Enclosures (LIE) etc.
2. For individual supply line and control signal line to control valve, 1/4 inch size light drawn tempered copper tubing conforming to ASTM B75 shall be used. The thickness of copper tubing shall not be less than 0.065 inch and shall be PVC coated. The fittings to be used with copper tubes shall be of cast brass, screwed type.
3. All other air supply lines of 1/2 inch to 2 inch shall be of carbon steel hot dipped galvanized inside and outside as per IS-1239, heavy duty with threaded ends. The threads shall be as per ASA B.2.1. Fittings material shall be of forged carbon steel A234 Gr. WPB galvanized inside and outside, screwed as per ASA B2.1. Dimensions of fittings shall be as per ASA B16.11 of rating 3000 lbs.
4. Instrument air filter cum regulator set with mounting accessories shall be provided for each pneumatic device requiring air supply. The filter regulators shall be suitable for 10 kg/ sq.cm max. inlet pressure. The filter shall be of size 5 microns and of material sintered bronze. The air set shall have 2 inch size pressure gauge and built in filter housing blow down valve. The end connection shall be as per the requirement to be finalised during detailed engineering.
5. All the isolation valves in the air supply line shall be gate valves as per ASTM B62 inside screw rising stem, screwed female ends as per ASA B2.1. Valve bonnet shall be union type & trim material shall be stainless steel, body rating 150 pounds ASA. The valve sizes shall be 1/2 inch to 2 inch.
Table 10.8
Specification for Instrument Air Header
S.N Property Requirement
For Panel For Field
1 Material SS 316 SS 316
2 Inter Connection 2” NPT (M) 1” NPT (M)
3 Header Take-Off SS 316 SS 316
4 Take-Off Connection ½” NPT (M) ½” NPT (M)
5 Take-Off Valve ½” Ball Valve SS 316 ½” Ball Valve SS 316
6 Drain ½” Ball Valve SS 316 at the lowest point
½” Ball Valve SS 316 at the lowest point
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 456 of 495
2x500 MW, NNTPS, Neyveli
CONTRACT SPECIFICATION
STEAM TURBINE GENERATOR PACKAGE - NTA2
TG, Vol-III, C&I-NTA2 Page 133
Table 10.9
Specification for CS Pipe
S.N Property Requirement
1 Reference ASTM A-106 Gr. C
2 Material Cold Drawn Seamless CS
3 Type Seamless/ threaded ends as per ASA B2.1/ Hot dip Galvanised from Inside & outside as per IS-1239
4 Size ½” to 2” NB
5 Schedule 80/160
6 Standard Length 5 metre
Table 10.10
Specification for CS Pipe Fittings
S.N Property Requirement
1 Reference ASTM A-234/ ASA B16.11
2 Type Forged/ hot dip galvanised from inside & outside
3 Size ½” to 2” (as required)
4 Rating 3000/6000/9000 lbs.
5 End Connection Threaded as per ASA B2.1
6 Type of Fittings Reducing Coupling, Male-Female reducer/ Straight Coupling/ Equal Tee/ Three piece Union/ Elbow/ Cap etc.
Table 10.11
Specification for CS Globe Valve
S.N Property Requirement
1 Reference ASTM A-105/ASTM B62
2 Type Globe
3 Construction Forged body cadmium plated
4 Rating PN 40/PN 160/ PN 320/ PN 400
5 End Connection Screwed Female ends as per ASA B2.1
6 Material
Body- Carbon steel Stem- Hardened Steel Plug- AISI 316 SS Seat- SS Stellited
7 Size ½” to 2 “ as required
8 Packing Teflon/Grafoil as required
9 Hand wheel CS
10 Yoke ASTM A105
11 Design Standard As per ANSI B16.34
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 457 of 495
2x500 MW, NNTPS, Neyveli
CONTRACT SPECIFICATION
STEAM TURBINE GENERATOR PACKAGE - NTA2
TG, Vol-III, C&I-NTA2 Page 31
interferences and power line borne surges especially encountered in power plant environment. Contractor’s equipment, which is vulnerable to electrical noise interference or surge, shall be suitably immunized to eliminate possible problems.
Contractor shall be fully responsible for detailed implementation of the type, size, shielding, input balancing, ripple amplitude and grounding for field inputs and for equipment furnished by Contractor to achieve an installation with minimum noise coupling from all sources.
Any additional equipment, services required for effectively eliminating the noise problems shall be identified and included.
5.10 Surge Protection for Microprocessor based Equipments
All microprocessor-based system / equipment shall be able to withstand the noise and surges inherent in a powerhouse. The system / equipment shall be designed to successfully withstand without damage to components and / or wiring, application of surge withstand capability (SWC) wave whose shape and characteristics are defined in ANSI publication C37.90a, 1974 entitled “Guide for Surge Withstand Capability (SWC) Tests”.
Details shall be provided of production tests being carried out to fully satisfy Owner/Consultant that the proposed system / equipment meets the above requirement and to assure that the products furnished shall be of the desired grade. To immunize the system against surge or coupling it is preferred that freewheeling diodes, surge suppressors, opto / galvanic isolators be used as required.
5.11 Drive Control Philosophy
The Drive control & measurement philosophy for the project is detailed in this section.
5.11.1 Bi-directional drives (inching or open/close)
1. All bi-directional drives shall be operable from Remote i.e. from CCR.
2. Remote manual operation of all drives shall be carried out from OWS.
3. Remote Open/Close commands, generated in control system shall be issued to MCC module through interposing relays located in respective MCC module in the MCC room. Latching of commands shall be provided in control system logic which shall be reset by Limit/Torque switch feedback. The Limit/Torque switch feedback from drive shall be directly wired to Control System.
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 458 of 495
2x500 MW, NNTPS, Neyveli
CONTRACT SPECIFICATION
STEAM TURBINE GENERATOR PACKAGE - NTA2
TG, Vol-III, C&I-NTA2 Page 32
4. Necessary Electrical protections shall be realized at MCC module whereas process interlocks & protections shall be realized in Control system.
5. Following signal exchange shall be envisaged between Drive & Control system:
• Open Limit Switch (Both NO & NC contacts)
• Close Limit Switch (Both NO & NC contacts)
• Open Torque Actuation
• Close Torque Actuation
• Position feedback (4-20 mA, two wire electronic type) for inching drive
6. Following signal exchange shall be envisaged between MCC & Control system(Remote I/O cabinet of control system located in/near MCC room):
• Switchgear available
• Switchgear disturbance
• Open Command
• Close Command
The block diagram of the bidirectional drive (On-Off type & Inching type) controls is shown in drawing no. LII-GEOE11019-G-00172-327 & LII-GEOE11019-G-00172-328.
5.11.2 Unidirectional LT drives
1. Unidirectional LT drives shall be operable only from Remote i.e. from CCR. In addition, Local pushbutton shall be provided only for emergency stopping of drive. Local start operation of the drive is not envisaged.
2. Remote manual operation of all drives shall be carried out from OWS.
3. Remote Start/Stop commands shall be generated in Control system & shall be issued to MCC module through interposing relays located in respective MCC modules.
4. Emergency stop of the drive shall be envisaged from the local pushbutton provided near the drive. The stop push button (Stay put
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 459 of 495
2x500 MW, NNTPS, Neyveli
CONTRACT SPECIFICATION
STEAM TURBINE GENERATOR PACKAGE - NTA2
TG, Vol-III, C&I-NTA2 Page 33
type) shall be provided with a press to lock & turn to release type keyless mechanism. Under locked position the drive operation is inhibited from remote. The local emergency stop push button shall be wired directly to MCC.
5. Necessary Electrical protections shall be realized at MCC module whereas process interlocks & protections shall be realized in Control system.
6. Current transducer with 4-20 mA type outputs shall be provided in the MCC for monitoring the current in Control System for all Drives greater than 90 KW. Auxiliary power supply to these transducers shall be from the control supply of the respective MCC modules.
7. Following signal exchange shall be envisaged between MCC & Control system(Remote I/O cabinet of control system located in MCC room):
• Switchgear available
• Switchgear disturbance
• On Feedback
• Off Feedback
• Start Command
• Stop Command
8. All Numerical relays/Intelligent controllers for LT drives shall be interfaced to Control System through IEC 61850 protocol.
The block diagram of the Unidirectional LT drive controls is shown in drawing no. LII-GEOE11019-G-00172-329.
5.11.3 Solenoid Operated drives
1. Solenoid operated drives shall be operable only from Remote i.e. from CCR.
2. Remote manual operation of all drives shall be carried out from OWS.
3. Remote Open/Close commands shall be generated in Control system & shall be issued to the Solenoid through interposing relays, located in Relay Panel.
4. Necessary process interlocks shall be realized in Control system.
5. Following signal exchange shall be envisaged between solenoid drive & Control system:
• Open Limit Position
• Close Limit Position
• Open Command
• Close Command
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 460 of 495
2x500 MW, NNTPS, Neyveli
CONTRACT SPECIFICATION
STEAM TURBINE GENERATOR PACKAGE - NTA2
TG, Vol-III, C&I-NTA2 Page 34
The block diagram of the Solenoid drive controls is shown in drawing no. LII-GEOE11019-G-00172-331
5.11.4 HT drives
1. HT drives shall be operable only from Remote i.e. from CCR. In addition, Local pushbutton shall be provided only for emergency stopping of drive. Local start operation of the drive is not envisaged.
2. Remote manual operation of all drives shall be carried out from OWS.
3. Remote Start/Stop commands shall be generated in Control system & shall be issued to MCC module through interposing relays located in respective MCC modules.
4. Emergency stop of the drive shall be envisaged from the local pushbutton provided near the drive. The stop push button (Stay put type) shall be provided with a press to lock & turn to release type keyless mechanism. Under locked position the drive operation is inhibited from remote. The local emergency stop push button shall be wired directly to MCC.
5. Necessary Electrical protections shall be realized at MCC module whereas process interlocks & protections shall be realized in Control system.
6. Current transducer with 4-20 mA type outputs shall be provided in the MCC for monitoring the current in Control System for all Drives. Auxiliary power supply to these transducers shall be from the control supply of the respective MCC modules
7. Following signal exchange shall be envisaged between MCC & Control system(Remote I/O cabinet of control system located in MCC room):
• Switchgear available
• Switchgear disturbance
• Master Trip relay Operated
• On Feedback
• Off Feedback
• Trip Feedback
• Emergency stop feedback
• Start Command
• Stop Command
• Current Feedback
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 461 of 495
2x500 MW, NNTPS, Neyveli
CONTRACT SPECIFICATION
STEAM TURBINE GENERATOR PACKAGE - NTA2
TG, Vol-III, C&I-NTA2 Page 35
8. All Numerical relays/Intelligent Controllers for HT drives shall be interfaced to Control System through IEC 61850 protocol.
The block diagram of the HT drive controls is shown in drawing no. LII-GEOE11019-G-00172-330
5.11.5 Variable Frequency Drive (VFD) [If Applicable]
1. VFD shall be operable from Remote i.e. from CCR & from VFD Local Display unit. In addition, Local pushbutton shall be provided only for emergency stopping of drive.
2. Remote manual operation of VFD shall be carried out from OWS.
3. Remote Start/Stop commands shall be generated in Control system & shall be issued to VFD Panel through interposing relays located in VFD Panel.
4. Emergency stop of the drive shall be envisaged from the local pushbutton provided in the field. The stop push button (Stay put type) shall be provided with a press to lock & turn to release type keyless mechanism. Under locked position the drive operation is inhibited from remote. The local emergency stop push button shall be wired directly to VFD panel.
5. Necessary Electrical protections shall be realized at VFD module whereas process interlocks & protections shall be realized in Control system.
6. Following signal exchange shall be envisaged between VFD & Control system:
• Switchgear available
• Switchgear disturbance
• On Feedback
• Off Feedback
• Trip Feedback
• Emergency stop feedback
• Start Command
• Stop Command
• Current Feedback
• Speed feedback
• Speed Setpoint
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 462 of 495
2x500 MW, NNTPS, Neyveli
CONTRACT SPECIFICATION
STEAM TURBINE GENERATOR PACKAGE - NTA2
TG, Vol-III, C&I-NTA2 Page 36
7. The VFD shall also be interfaced with control system via Modbus soft link.
The block diagram of the Variable Frequency drive controls is shown in drawing no. LII-GEOE11019-G-00172-133
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 463 of 495
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 464 of 495
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 465 of 495
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 466 of 495
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 467 of 495
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 468 of 495
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 469 of 495
2x500 MW, NNTPS, Neyveli
CONTRACT SPECIFICATION
STEAM TURBINE GENERATOR PACKAGE - NTA2
TG, Vol-III, C&I-NTA2 Page 141
11.2.4 Routine Test
To be carried out by Contractor during various stages of manufacture. Owner / Consultant shall review the related documentation.
1. Insulation & jackets: All tests as per IS – 5831 except insulation resistance, voltage & spark test shall be as per BS – 5308, Part II (1986)
2. Armor test as per IS – 3975
3. Conductor resistance
4. Cable capacitance and L/R ratio.
11.2.5 Acceptance Test
These tests shall be carried out in the presence of Owner / Consultant
1. Continuity test
2. Voltage test as per BS – 5308 Part II (1986)
3. Conductor resistance and drain wire resistance
4. Cable capacitance and L/R ratio test.
5. Tests for uniformity of galvanization of armor as per IS – 2633
6. Oxygen and temperature index test as per ASTM D – 2863
7. Dimensional checks for overall diameter and under armour / over armour diameter.
8. Overall finish check. In case of any lump, Owner / Consultant will have the right to cut outer sheath for lump portion and reject the cable.
9. Checking of drum length & overall length tolerances.
Immediately after completion of electrical tests, the ends of the cable shall
be sealed to prevent ingress of moisture with suitable PVC / Rubber caps
11.3 Specifications of Optical Fibre Cables (OFC)
1. This specification describes the minimum general requirements for the design, manufacture, supply, inspection, installation, testing & commissioning of optical fibre cable & accessories.
2. Contractor shall consider all related activities such as cable stripping, Cable entry in boxes & panels, cable fibre splicing/fusion, cable performance testing & other services, to achieve properly documented & operational cable network.
3. OFC shall be installed on cable tray, duct bank, cable trench installation as necessary. For outdoor applications the cable shall be armoured with Poly Ethylene sheathing. In all cases cable shall be routed through
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 470 of 495
2x500 MW, NNTPS, Neyveli
CONTRACT SPECIFICATION
STEAM TURBINE GENERATOR PACKAGE - NTA2
TG, Vol-III, C&I-NTA2 Page 142
suitable grade HDPE permanently lubricated protection pipe as per IS-4984, IS-12235 & TEC.G/CDS-08/01 of suitable size @ 53% fill factor.
4. The optical fibre core shall be of ultrapure fused silica glass coated with UV cured acrylate suitable to withstand temperature of about 80 deg. Centigrade continuously.
5. OFC shall be 4 / 8 / 12 core, galvanized corrugated steel taped armored, fully water blocked with dielectric central member for outdoor / indoor application so as to prevent any physical damage. The cable shall have multiple single-mode or multi-mode fibres on as required basis so as to avoid the usage of any repeaters. The core and cladding diameter shall be 9 +/- 1 micrometer and 125 +/- 1 micrometer respectively. The outer sheath shall have Flame Retardant, UV resistant properties & to be identified with the manufacturer’s name, year of manufacture, progressive automatic sequential on-line marking of length in meters at every meter on outer sheath.
6. The cable core shall have suitable characteristics and strengthening for prevention of damage during pulling viz. steel central member, Loose buffer tube design, 4 fibres per buffer tube (minimum), Interstices and buffer tubes duly filled with Thixotropic jelly or better material. The cable shall be suitable for maximum tensile force of 2000 N during installation, and once installed, a tensile 1000 N minimum. The compressive strength of cable shall be 3000N minimum & crush resistance 4000 N minimum. The operating temperature shall be -20 Deg.C to 70 Deg.C.
7. The splicing loss of any two fibres in any case shall not exceed 0.10 db/splice.
8. The Contractor shall submit the ageing characteristics of the offered optic fibres. The total additional attenuation above the nominal attenuation due to regular splices, repair splices, connectors, temperature variation, ageing etc. shall be indicated by the Contractor.
9. Fibre coloring shall conform to EIA/TIA-598. The color-coding shall be permanent thus withstanding normal handling; e.g., during termination, testing, or cable relocation. Refer to EIA – 359 for color identification and coding.
10. Cables shall be designed & tested in accordance with ISO 11801, TIA-568 & ICEA 596 and Performance specifications shall be measured in accordance with the Fibre Optic test procedures(EIA/TIA -455 documents) test procedures of IEC-60793 & IEC-60794.
11. The OFC shall generally conform to the following specifications
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 471 of 495
2x500 MW, NNTPS, Neyveli
CONTRACT SPECIFICATION
STEAM TURBINE GENERATOR PACKAGE - NTA2
TG, Vol-III, C&I-NTA2 Page 143
Table 11.4A
Specifications for Single Mode Optical Fibre
S.N Feature Minimum Requirement
1 Maximum Uncabled Attenuation Coefficient
@1310 nm 0.4 dB/km
@1550 nm 0.3 dB/km
2 Mode field Diameter @1310 nm 9.2±0.4 µm
@1550 nm 10.4±0.8 µm
3 Maximum Cable Cut-off Wavelength 1260 nm
4 Maximum Zero Dispersion Wavelength 1321.5 nm
5 Minimum Zero Dispersion Wavelength 1301.5 nm
6 Maximum Zero Dispersion Slope 0.092 ps/nm2·km
7 Maximum Polarization Mode Dispersion 0.2 ps/√km
8 Gigabit Ethernet Length 1000BASE-LX 2-5000 mtrs.
9
Ten Gigabit Ethernet Length
10GBASE-LX 2-10000 mtrs.
10GBASE-LX4 2-10000 mtrs.
10 Maximum Core/cladding Concentricity Error 0.5 µm
11 Cladding Diameter 125.0 ± 1.0 µm
12 Cladding Non-circularity 1 %
13 Coating Diameter 245 ± 5 µm
14 Maximum Coating Concentricity Error 12.5 µm
15 Temperature Dependence (-60 to +85C) 0.05 dB/km
16 Temperature & Humidity Cycling (-10 to + 85C, 4 to 90% RH)
0.05 dB/km
17 Minimum Proof Test 100 kpsi
18 Bending Induced Attenuation (100 turns, 75mm diameter)
0.5 dB
Table 11.4B
Specifications for Multi Mode Optical Fibre
S.N Feature Minimum Requirement
1 Maximum Uncabled Attenuation Coefficient
@850 nm 3 dB/km
@1300 nm 0.7 dB/km
2 Overfilled Launch Bandwidth
@850 nm 200 MHz·km
@1300 nm 500 MHz·km
3 Gigabit Ethernet Length 1000BASE-SX 2-300 mtrs.
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 472 of 495
2x500 MW, NNTPS, Neyveli
CONTRACT SPECIFICATION
STEAM TURBINE GENERATOR PACKAGE - NTA2
TG, Vol-III, C&I-NTA2 Page 144
S.N Feature Minimum Requirement
1000BASE-LX 2-550 mtrs.
4
Ten Gigabit Ethernet Length
10GBASE-SR 2-33 mtrs.
10GBASE-LX4 2-300 mtrs.
5 Numerical Aperture 0.275 ± 0.015
6 Core Diameter 62.5 ± 3.0 µm
7 Maximum Core Non-circularity 6 %
8 Maximum Core/cladding Concentricity Error 3 µm
9 Cladding Diameter 125.0 ± 2.0 µm
10 Cladding Non-circularity 2 %
11 Coating Diameter 245 ± 10 µm
12 Maximum Coating Concentricity Error 12.5 µm
13 Temperature Dependence (-60 to +85C) 0.2 dB/km
14 Temperature & Humidity Cycling (-10 to + 85C, 4 to 90% RH)
0.2 dB/km
15 Minimum Proof Test 100 kpsi
16 Bending Induced Attenuation (100 turns, 75mm diameter)
0.5 dB
12. The cables shall be supplied in non-returnable strong wooden (or
alternatively steel) drums provided with lagging of adequate strength, constructed to protect the cable against any damage and displacement during transit, storage and subsequent handling and stringing operations in the field.
13. Test on Fibre optic cable:
Table 11.4C
Type Test Requirement for Fibre Optic Cables
S.N Test Requirement Standard
A Optical Characteristics of Fibres
1 Attenuation
IEEE Std. 1138 IEEE STD. P1222 (EIA/TIA – 455-61,78A) (IEC 793-1-C1A,B,C)
2 Cut off wavelength
IEEE STD. 1138 IEEE STD PI222 (EIA-455-80, 170) (IEC-793-1-C7A,B)
3 Fibre Dispersion IEEE STD. 1138 IEEE STD. P1222
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 473 of 495
2x500 MW, NNTPS, Neyveli
CONTRACT SPECIFICATION
STEAM TURBINE GENERATOR PACKAGE - NTA2
TG, Vol-III, C&I-NTA2 Page 145
S.N Test Requirement Standard
(EIA/TIA-455-168A,169A,175A) (IEC-793-1-C5A,B,C)
4 Frequency Response IEC-793-1-C2B
5 Mode Field Diameter
IEEE STD. 1138 IEEE STD. P1222 (EIA/TIA-455-164A,165A,167A) (EIA-455-174) (IEC 793-1-C9A,B,C,D)
6 Temperature Cycling
IEEE STD. 1138 IEEE STD. P1222 (EIA/TIA-455-69A) (IEC 793-1-D1)
B Mechanical Characteristics of Fibres
1 Abrasion IEC 793-1-B4
2 Core Concentricity IEC 793-1-A3
3 Macro Bending EIA/TIA-455-62A (IEC 793-1-C11)
4 Micro Bending IEC-793-1-C3
C Proof Test IEC-793-1-B1
D Strippability IEC 793-1-B6
E Visual Examination EIA/TIA-455-13 (IEC 793-1-B5)
11.4 Instrumentation Cable Interconnection & Termination Philosophy
The cable interconnection philosophy to be adopted shall be such that expensive grouping of signals by large scale use of field mounted Group Junction Boxes (JBs) at strategic locations. (where large concentrations of signals are available, e.g. valves limit and torque switches, switchgear) is done and consequently cable with higher number of pairs are extensively used. The details of termination to be followed are mentioned in the following Table:
Table 11.5
Instrumentation Cable Interconnection & Termination Philosophy
S.N Application Type of Termination Type of
Cables From (A) To (B) End A End B
1.
Limit, Torque switches of valves / dampers / drives (integral junction box)
Marshalling cubicle / Marshalling cum Termination Cubicle / Local group
Plug-in connector
Posts mount cage clamp type
G
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 474 of 495
2x500 MW, NNTPS, Neyveli
CONTRACT SPECIFICATION
STEAM TURBINE GENERATOR PACKAGE - NTA2
TG, Vol-III, C&I-NTA2 Page 146
S.N Application Type of Termination Type of
Cables From (A) To (B) End A End B
JB
2.
Transmitters, E/P converters, process actuated switches mounted in LIE / LIR
Integral junction box of LIE / LIR
Plug-in connector
Cage clamp (rail mount)
F, G
3. RTD heads Local junction Box
Plug-in connector
Cage clamp (Rail mount) type
F
4. Thermocouples Junction Box Plug in connector
Cage clamp (Rail mount) type
A, B, C*
5. Other Field Mounted Instrument
Local JB / Group JB
Plug in connector
Screwed, Cage clamp (Rail mount) type
F (For analog signals) G (For Binary Signals)
6.
Junction Box (For Thermocouples for interlock and protection
Marshalling Cubicle / Marshalling cum Termination Cabinet
Cage clamp (Rail mount) type
Screwed, Cage clamp (Rail mount) type
A, C*. These signals shall preferably through 6 pair cable
7.
Local junction box, Instrument Junction box of LIE / LIR / Group JB / MCC / SWGR
Group JB
Cage clamp (Rail mount) type
Cage clamp (Rail mount) type
F, G
8.
Local junction box, Instrument Junction box of LIE / LIR / Group JB / MCC / SWGR
Marshalling Cubical / Marshalling cum termination Cabinet
Cage clamp (Rail mount) type
Posts mount cage clamp type
F, G
9.
Marshalling Cubical / Termination Cabinet
Electronic system cabinet
Cage clamp post mounted type
Plug-in connector / Other System as per manufacturer’s Standard
Internal Wiring
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 475 of 495
2x500 MW, NNTPS, Neyveli
CONTRACT SPECIFICATION
STEAM TURBINE GENERATOR PACKAGE - NTA2
TG, Vol-III, C&I-NTA2 Page 147
Notes:
1. Normally 10% spare cores shall be provided when the numbers of pairs of cables are more than four pairs.
2. For analog signals, individual pair shielding & overall shielding & for binary signals only overall shielding of instrumentation cables shall be provided.
3. * For high temperature applications only.
4. Instrument Cabling for instruments / equipment of specialized / proprietary Control System shall be as per manufacturer’s standard.
11.4.1 Terminal Blocks
1. All terminal blocks shall be rail mounted/post mounted cage clamp type with high quality non-flammable insulating material of melamine suitable for working temperature of 105 deg. C. The terminal blocks in field mounted junction boxes, temperature transmitters, instrument enclosures/racks, etc. shall be suitable for cage clamp connections. The terminal blocks in Control Equipment Room logic / termination / marshalling cubicles shall be suitable for the post mounted cage clamp connection at the field input end. The terminal blocks for TG integral control system Input/Output connections from/to SWGR/MCC, shall be provided with built in test and disconnect facilities complete with plug, slide clamp, test socket etc. The exact type of terminal blocks to be provided by the Contractor and the technical details of the same including width etc shall be subject to Owner’s / Consultant’s approval.
2. All the terminal blocks shall be provided complete with all required accessories including assembly rail, locking pin and section, end brackets, partitions, small partitions, test plug bolts and test plug ( as specified above for SWGR connections), transparent covers, support brackets, distance sleeves, warning label, marking , etc.
3. The marking on terminal strips shall correspond to the terminal numbering on wiring diagrams. At least 20% spare unused terminals shall be provided everywhere including local junction boxes, instrument racks/enclosures, termination/marshalling cabinets, etc. All terminal blocks shall be numbered for identification and grouped according to the function. Engraved labels shall be provided on the terminal blocks.
4. The terminal blocks shall be arranged with at least 100 mm clearance between two sets of terminal blocks and between terminal blocks and junction box walls.
5. For ensuring proper connections, Contractor shall provide suitable accessories along with insulation sleeves. The exact connecting accessory shall be finalized as per application during detail engineering stage subject to Owner’s / Consultant’s approval without any cost repercussions.
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 476 of 495
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 477 of 495
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 478 of 495
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 479 of 495
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 480 of 495
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 481 of 495
LAHMEYER INTERNATIONAL (INDIA) PVT. LTD.
CONSULTING ENGINEERS, GURGAON, INDIA
E
TN
Y
A
EL
NI
A
T
H
E
M
R N
R
OI AL
NI DIA
INSTRUMENT INSTALLATION DIAGRAM
2 X 500 MW NEYVELI NEW THERMAL
NEYVELI LIGNITE CORPORATION LTD, NEYVELI, TAMILNADU
POWER STATION
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 482 of 495
LAHMEYER INTERNATIONAL (INDIA) PVT. LTD.
CONSULTING ENGINEERS, GURGAON, INDIA
E
TN
Y
A
EL
NI
A
T
H
E
M
R N
R
OI AL
NI DIA
INSTRUMENT INSTALLATION DIAGRAM
2 X 500 MW NEYVELI NEW THERMAL
NEYVELI LIGNITE CORPORATION LTD, NEYVELI, TAMILNADU
POWER STATION
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 483 of 495
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 484 of 495
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 485 of 495
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 486 of 495
THIS IS A PART OF TECHNICAL SPECIFICATION NO.PE-TS-402-155A-A001
Page 487 of 495
TI
BH
TLE: TECO
STEAM TURB2
HEL – PS- PEM-
CHNICAL SPONDENSATEBINE GENERAT2X500 MW NE
-PPEI: NOIDA,
PECIFICATIONE POLISHING TOR AND AUXEW NEYVELI
VOL-
SECTOR 16A,
N FOR UNIT
XILIARIES (NTATPP
III
SP
VO
SE
RE
UP-201301
A 2)
PEC NO: PE-TS
OLUME: III
ECTION:
EV NO: 00
S-402-155A-A00
DATE:
01
Page 488 of 495
NA
All on
VO
AME
clarification
ly.
OLUME S
PARTICU DESIGN
TITLE:
ST
from the Tec
SECTION
ULARS OF BIDD
NATION
BHEL
TECHCON
TEAM TURBIN2X5
SC
chnical Spec
CLAUSE NO.
DER / AUTHORI SIGNAT
L – PS- PEM-PP
HNICAL SPECNDENSATE PNE GENERATO500 MW NEW
HEDULE OF
cification sha
PAGE NO.
ISED REPRESEN
TURE
PEI: NOIDA, SE
CIFICATION FOLISHING UNR AND AUXILI
W NEYVELI TP
F PRE-BID
all be filled in
SPECIFIREQUIR
NTATIVE DATE
ECTOR 16A, UP
FOR NIT ARIES (NTA 2)
PP
CLARIFICA
n by the BI
CATIONREMENT
SPE
VOL
SEC
REV
P-201301
)
ATION
DDER claus
CLARIFICA
EC NO: PE-TS-4
LUME: III
CTION:
V NO: 00
COMPAN
se by claus
ATION RECL
402-155A-A001
DATE:
NY SEAL
se in this fo
EASONS LARIFICATI
1
ormat
FOR ON
Page 489 of 495
NA
AME
The bidder same with t
1. The sctechnic
2. QP/ tespecific
3. QP wiinspecwitnessThe chinclude
4. All drareview/and sh
5. There Deviat
6. The ofwhere approv
7. The cobase pactuall
8. All sub
9. Any sp
10. Performguaran
11. Prices and no
PARTICU DESIGN
TITLE:
ST
shall confirmhe offer:
cope of suppcal specificat
est procedurcation & QP
ll be subjection/ testingsed as per sharges for 3ed in the bas
awings/data / approval. G
hall be subjec
are no otherions’.
ffered matermaterial is
val in the eve
ommissioningprice (If biddy required du
b vendors sha
pecial tools &
mance guarantee test and
for recommeot to be includ
ULARS OF BIDD
NATION
BHEL
TECHCON
TEAM TURBIN2X5
m compliance
ply, technication & there a
es shall be enclosed the
ct to BHEL/C shall be mame apart fr
3rd party insse price of the
– sheets etcGA drawingsct to approva
r deviations w
rials shall benot specifie
ent of order.
g spares (if aers reply to uring commis
all be subjec
& tackles, if re
antee test pa its acceptan
ended spareded in the ba
DER / AUTHORI SIGNAT
L – PS- PEM-PP
HNICAL SPECNDENSATE PNE GENERATO500 MW NEW
COMPL
e with followin
al details, coare no exclus
submitted inerein.
Customer amarked in throm review ospection (Lloe equipment
c. to be subs, as submittal during cont
with respect t
e either equed it shall b
any) are suppthis is “No cssioning sam
ct to BHEL/C
equired, sha
arameters shnce by BHEL
s (if any) for ase price.
ISED REPRESEN
TURE
PEI: NOIDA, SE
CIFICATION FOLISHING UNR AND AUXILI
W NEYVELI TP
IANCE CER
ng by signing
onstruction fesions/ deviat
n the event
pproval in the QP at th
of various tesoyds, TUV ot by the bidde
bmitted durinted with offetract stage.
to specificati
ivalent or sue suitable f
plied on ‘As Rcommissionime shall be s
USTOMER a
ll be in bidde
hall stand vaL/Customer.
three year o
NTATIVE DATE
ECTOR 16A, UP
FOR NIT ARIES (NTA 2)
PP
RTIFICATE
g/ stamping t
eatures, destions with reg
of order ba
the event ofhe contract
st certificatesr equivalenter.
ng contract r at tender s
ion other tha
uperior to thfor intended
Required Bang spares a
supplied by b
approval.
er’s scope.
lid till the sat
operation sha
SPE
VOL
SEC
REV
P-201301
)
this complian
sign parametgard to same
ased on the
f order & cstage. Insp
/ Inspection ) for importe
shall be substage are for
an those furn
hose specifieduty, mater
asis’ & pricesre required”
bidder withou
tisfactory co
all be furnish
EC NO: PE-TS-4
LUME: III
CTION:
V NO: 00
COMPAN
nce certificat
ters etc. shae.
guidelines
ustomer holpection/ testirecords etc. ed compone
bject to BHEr reference p
ished in the
ed. Also for rials shall b
for same incand if some
ut any cost to
mpletion of P
ed separatel
402-155A-A001
DATE:
NY SEAL
te and furnis
all be as per
given in the
d points foring shall be
ents shall be
EL/Customerpurpose only
‘Schedule of
componentse subject to
cluded in thee spares areo BHEL).
Performance
ly
1
hing
r
e
r e
e
r y
f
s o
e e
e
Page 490 of 495
NA
I …pefor I ab B AS N B
Thind
AME
………………rtaining to trmat proposa
hereby certbove my sig
idders Com
uthorized reignature
ame
idder’s Nam
he bidder hedicated.
PARTICU DESIGN
TITLE:
ST
………………his specifica
al number Da
tify that I amgnature.
mpany Name
epresentativ
me
ereby agree
ULARS OF BIDD
NATION
BHEL
TECHCON
TEAM TURBIN2X5
………………ation are coated …………
m duly auth
e
ve’s
es to fully co
DER / AUTHORI SIGNAT
L – PS- PEM-PP
HNICAL SPECNDENSATE PNE GENERATO500 MW NEW
SCHEDUL
………………rrect and ar
………….. an
horized rep
omply with t
ISED REPRESEN
TURE
PEI: NOIDA, SE
CIFICATION FOLISHING UNR AND AUXILI
W NEYVELI TP
LE OF DECL
………..………re true reprend there is no
resentative
the requirem
NTATIVE DATE
ECTOR 16A, UP
FOR NIT ARIES (NTA 2)
PP
LARATIONS
…certify that esentation oo deviation to
of the Bidd
…
…
………
ments and i
SPE
VOL
SEC
REV
P-201301
)
S
all the tecf the equipm
o the specific
der’s comp
………………
……………
………………
intent of this
EC NO: PE-TS-4
LUME: III
CTION:
V NO: 00
COMPAN
chnical data ment/systemcation.
any whose
………………
……………
………………
s specificat
402-155A-A001
DATE:
NY SEAL
and inform covered by
name app
………………
……………..
………….
ion for the p
1
ation y our
ears
….
price
Page 491 of 495
SL NO
VOULME/ SECTION
PAGE NO.
CLAUSE NO.
TECHNICAL SPECIFICATION/
TENDER DOCUMENT
COMPLETE DESCRIPTION OF DEVIATION
COST OF WITHDRAWL
OF DEVIATION
REFERENCE OF PRICE
SCHEDULE ON WHICH COST OF WITHDRAWL OF
DEVIATION IS APPLICABLE
NATURE OF COST OF
WITHDRAWL OF DEVIATION (POSITIVE/ NEGATIVE)
THIS IS A PART OF TENDER TECHNICAL SPECIFICATION PE-TS-402-155A-A001
13. In case nature of cost of withdrawl (positive/negative) is not specified it shall be assumed as positive.
14. In case of descrepancy in the nature of impact (positive/ negative), positive will be considered for evaluation and negative for ordering.
11. All techno-commercial terms and conditions of NIT shall be deemed to have been accepted by the bidder, other than those listed in unpriced copy of this format.
PARTICULARS OF BIDDERS/ AUTHORISED REPRESENTATIVE
12. Cost of withdrawl is to be given seperately for each deviation. In no event bidder should club cost of withdrawl of more than one deviation else cost of withdrawl of such deviations which have been clubbed together shall be considered as NIL.
REASON FOR QUOTING DEVIATION
SCHEDULE OF DEVIATIONS WITH COST OF WITHDRAWL
PROJECT:-STEAM TURBINE GENERATOR AND AUXILIARIES (NTA 2)2X500 MW NEW NEYVELI TPP
PACKAGE:-CONDENSATE POLISHING UNIT
NAME OF VENDOR:-
TECHNICAL DEVIATIONS
COMMERCIAL DEVIATIONS
TENDER ENQUIRY REFERENCE:-
10. Any deviation mentioned in priced copy of this format, but not mentioned in the un-priced copy, shall not be accepted.
NAME DESIGNATIONS SIGN & DATE
NOTES:
1. For self manufactured items of bidder, cost of withdrawl of deviation will be applicable on the basic price (i.e. excluding taxes, duties & freight) only.
2. For directly dispatchable items, cost of withdrawl of deviation will be applicable on the basic price including taxes, duties & freight.
9. For deviations w.r.t. Payment terms, Liquidated damages, Firm prices and submission of E1/ E2 forms before claiming 10% payment, if a bidder chooses not to give any cost of withdrawl of deviation loading as per Annexure-VIII of GCC, Rev-06 will apply. For any other deviation mentioned in un-priced copy of this format submitted with Part-I bid but not mentioned in priced copy of this format submitted with Priced bid, the cost of withdrawl of deviation shall be taken as NIL.
8. Bidders to note that any deviation (technical/commercial) not listed in above and asked after Part-I opening shall not be considered.
3. All the bidders have to list out all their Technical & Commercial Deviations (if any) in detail in the above format.
4. Any deviation not mentioned above and shown separately or found hidden in offer, will not be taken cognizance of.
5. Bidder shall submit duly filled unpriced copy of above format indicating "quoted" in "cost of withdrawl of deviation" column of the schedule above along with their Techno-commercial offer, wherever applicable.
6. Bidder shall furnish price copy of above format along with price bid.
7. The final decision of acceptance/ rejection of the deviations quoted by the bidder shall be at discretion of the Purchaser.
Page 1 of 1
Page 492 of 495
THIS IS PRAT OF TECHNICAL SPECIFICATION PE-TS-402-155A-A001
PROJECT: STEAM TURBINE GENERATOR AND AUXILIARIES (NTA 2)2X500 MW NEW NEYVELI TPP
SUGGESTIVE PRICE SCHEDULE
CONDENSATE POLISHING UNIT
THE PRICES SHOULD BE SUBMITTED IN THE ENCLOSED PRICE SCHEDULEFORMAT ONLY. FOLLOWING PRICE SCHEDULE FORMATS ARE ENCLOSED
ANNEXURE ‘A’ : LUMP SUM PRICES AND MAJOR
BREAK-UP OF PRICES
Name Designation Signature Date Company seal
Bidder shall furnish this price schedule in his price offer only
Particulars of bidder / authorised representative
Page 493 of 495
THIS IS PRAT OF TECHNICAL SPECIFICATION PE-TS-402-155A-A001
1 Total lump sum firm price on FOR site basis for design, engineering, manufacture,fabrication, assembly, inspection / testing at vendor's & sub-vendor’s works,painting,mandatory spares alonwith spares for errection,startup and commissioning asrequired, forwarding, proper packing, shipment and delivery at site,unloading,handling,transportation & storage at site , in site transportation, assembly, erection &commissioning, trial run on FOR site basis preparation and submission of “As Built”drawings and carrying out performance tests at site etc. inclusive of all prevailing taxes,duties and other levies and handover in flawless condition of CONDENSATE POLISHINGUNIT and external regeneration system to the end customer complete with all accessoriesfor the total scope defined as per BHEL tender technical specification (PE-TS-391-155A-A001) for project STEAM TURBINE GENERATOR AND AUXILIARIES (NTA 2),2X500MW NEW NEYVELI TPP
a) Bidder to note that total price indicated above at 1 shall be considered for evaluation andhence should be complete in all respect for the full scope defined and considering all termsand conditions agreed.
b) In case, price indicated above does not match with item wise break-up given at 2, thehighest price so calculated shall be considered for evaluation but in case of order, the sameshall be placed at the lowest price.
2 MAJOR BREAK-UP OF PRICES GIVEN IN 1 ABOVE
2.1 Total lumpsum firm price for EQUIPMENT (SUPPLY, DESIGN & ENGINEERING)i.e.manufacture, fabrication, assembly, inspection / testing at vendor's & sub-vendor’sworks, painting,mandatory spares alonwith spares for errection,startup and commissioningas required, forwarding, proper packing, shipment and delivery at site, inclusive of all taxes& duties for the complete scope of supply of CONDENSATE POLISHING UNIT andexternal regeneration system to the end customer complete with all accessories for thetotal scope defined as per tender technical specification (PE-TS-402-155A-A001).
2.2 Total lump sum firm price for all services including unloading, handling,transportation &storage at site , in site transportation, assembly, erection & commissioning, trial run onFOR site basis preparation and submission of “As Built” drawings, etc, required forcompletion of CONDENSATE POLISHING UNIT as per tender technical specification (PE-TS-402-155A-A001).
2.3 Price for performance test and handing over the plant to the customer.
3.0 Break-up (%) of prices given at Sl No-2.1 above (To be used during contract execution forpayment).
3.1 Lumpsum firm price for supply of Service vessels inclusive of all taxes, duties and otherlevies as applicable.
3.2 Lumpsum firm price for supply of Pressure vessels other than Service vessels inclusive ofall taxes, duties and other levies as applicable.
3.3 Lumpsum firm price for supply of Resin inclusive of all taxes, duties and other levies asapplicable.
3.4 Lumpsum firm price for supply of Atmospheric tank inclusive of all taxes, duties and otherlevies as applicable.
3.5 Lumpsum firm price for supply of Low Pressure Valves inclusive of all taxes, duties andother levies as applicable.
3.6 Lumpsum firm price for supply of High Pressure Valves inclusive of all taxes, duties andother levies as applicable.
3.7 Lumpsum firm price for supply of Instruments & Analyser inclusive of all taxes, duties andother levies as applicable.
3.8 Lumpsum firm price for supply of Rotary Equipments (Pumps,Blowers,Agitators etc.)inclusive of all taxes, duties and other levies as applicable.
3.9 Lumpsum firm price for supply of Piping & Fittings inclusive of all taxes, duties and otherlevies as applicable.
3.10 Lumpsum firm price for supply of PLC inclusive of all taxes, duties and other levies asapplicable.
3.11 Lumpsum firm price for supply of Balance items inclusive of all taxes, duties and otherlevies as applicable.
Name Designation Signature Date Company seal
10% of sl no 2.1 above.
7% of sl no 2.1 above.
5% of sl no 2.1 above.
13% of sl no 2.1 above.
10% of sl no 2.1 above.
5% of sl no 2.1 above.
13% of sl no 2.1 above.
12% of sl no 2.1 above.
15% of sl no 2.1 above.
5% of sl no 2.1 above.
5% of sl no 2.1 above.
Bidder shall furnish this price schedule in his price offer only
Particulars of bidder / authorised representative
ANNEXURE -A
Page 494 of 495
THIS IS PART OF TECHNICAL SPECIFICATION PE-TS-402-155A-A001
S.NO. DESCRIPTIONS UNIT TOTAL CIF CONTENT
1) Resins
ANNEXURE-B
LIST OF CIF CONTENTS FOR CONDENSATE POLISHING UNIT FOR STEAM TURBINE GENERATOR AND AUXILIARIES (NTA 2)
2X500 MW NEW NEYVELI TPP
Page 495 of 495