The Israel Electric Corp. Ltd

The Israel Electric Corp. Ltd.

Rutenberg Power Station

Units 3 & 4

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Project Specification CM-707

Annexure "B"

THE ISRAEL ELECTRIC CORP. Ltd. Specification: CM-707 Engineering Projects Group Annexure "B" Engineering Division Issue: For Proposal Rev.: December 2011

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3 Purchaser………………………………………………………………..……… 1.

3 Name of Project………………………………………………………..………. 2.

3 Location of Project……………………………………………………..……... 3.

3 Scope of Work………………………………………………………………..… 4.

3 Scope of Engineering and Supply………………………………………….. 4.1

6 Special equipment, tools and instruments………………………………... 4.2

6 Contractor Services…………………………………………………………. 4.3

7 Work by Others……………………….…………………………...……...…… 4.4

8 Documentation……………………….…………………………………..……. 4.5

8 Terminal connections……………………………..…………………..………. 4.6

9 Commissioning and tuning…………………….………………………..……. 4.7

9 Guaranteed Performances and Testing…………………………..………... 4.8

9 Supplements………………………………………………………………….. 5.

10 Standards and Codes………………………………………………..……….. 6.

12 Quality Assurance and Quality Control…………………………..……….. 7.

13 Shipment and Handling of Goods and Documentation……….……….. 8.

14 Safety, Environment and Loading Requirements……………….……….. 9.

14 Safety……………………………..……………………………………………. 9.1

14 Noise……………………….…………………………………………………... 9.2

14 Technical Documentation……………………………….………………….. 10.

15 Spare and Renewal Parts……………………………………...………………

11.

15 Mechanical Technical Requirements……………….……………………… 12.

25 Instrumentation……..……………..…………………………………………… 13.

25 Electrical and Control Requirements…………………………….………… 14.

37 Inspection and Test………….…..………………………………..………….. 15.

38 Control System Requirements………………………………………………. 16.

40 Painting Requirements…………..………………………………..………….. 17.


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SSPPEECCIIFFIICCAATTIIOONN FFOORR

Sootblowing Air CompressorSootblowing Air Compressor

1. PURCHASER: The Israel Electric Corporation Limited.

2. NAME OF PROJECT: Rutenberg Power Station, Units 3 & 4

3. LOCATION OF PROJECT: Near Ashkelon in the Mediterranean seashore.

4. SCOPE OF WORK:

4.1 Scope of Engineering and Supply:

4.1.1 Design, manufacture, test, preserve, pack and furnish with export packing,

and transport two (2) oil free Air Compressor units (2500 scfm, 350 psig) to

provide air for sootblowing and if applicable to provide low pressure (125

psig) air for Instrument air system.

4.1.2 The Contractor shall be responsible for the complete design, manufacturing,

testing, commissioning and first successful run with specified performances of

the complete oil free Compressor units.

The system shall be supplied complete including but not limited to the following:

Skid mounted Heavy Duty Construction oil free Compressor units including

equipment, appurtenances and accessories, as specified herein to form

complete systems which will achieve and assure safe and reliable operation with

best overall performance at all loads and modes of operation.


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4.1.3 Scope of supply:

4.1.3.1 The Compressor units shall be skid mounted, oil free, water cooled and of the

following types:

Centrifugal.

Screw.

Reciprocating.

Combination of two types of the above.

Other oil free compressor type subject to the purchaser approval.

4.1.3.2 The compressor units shall include at least the following, inside a common

acoustic enclosure (80 dbA at a distance of 1 meter):

Air intake filter (located on the compressor house) including air duct/piping

to connect the air filter to the compressor air inlet.

Intercooler and after cooler heat exchangers.

Water / Moisture separators.

Silencers.

Valves (automatic drain valves, cooling water regulating valves, shutoff

valve, bypass valve, safety valve, etc.).

Automatic control.

Safety devices.

Piping and wiring.

High voltage electric motor drive.

Local Control Panel.

Vibration detection instruments that will be connected to the local control

panel.

Interconnecting piping and wiring.

All anchor bolts, washers and nuts.

4.1.4 The compressor shall be oil free which means absolutely no possibility of

oil contamination in the outlet air.


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4.1.5 The compressor shall have maximum efficiency at any level of demand

with high reliability, high energy efficiency and low maintenance.

4.1.6 The Equipment for each Unit shall be supplied complete with appurtenances and

accessories as specified herein, to form a complete system which will achieve

and assure safe and reliable operation with best overall performance at all loads

and modes of operation. All components, appurtenances and accessories shall

be of proven design, verified by Power Plant Operation.

4.1.7 Components that are herein specified in regard to manufacturer brand and model

or type shall be considered the standard of supply. It is not intended that the

Contract be limited solely to such characteristics. The Contractor may make an

appropriate substitution, but all substituted Components offered shall be noted as

EXCEPTIONS to this Specification and are subject to review, comment, and

approval by the Purchaser.

Additionally, while everything else being equal and without derogating from

Contractor's responsibilities under the Contract, the Contractor shall endeavor to

include in the scope of design and supply, components and accessories

manufactured in Israel.

4.1.8 Contractor shall provide, in the required format and form and in a timely manner,

all documentation required by this Specification and/or required by applicable

Standards and Codes and/or as specifically detailed in the Documentation

Submission Schedule (DSS), Annexure "J". A consistent nomenclature shall be

used project-wide in naming all component parts within the Scope of Work. This

shall apply to all drawings, Instruction Books, Bill of Materials, special

instructions, etc. Engineering design shall commence immediately after Contract

award. The cost of correcting inconsistent nomenclature shall be borne by the

Contractor.

4.1.9 Changes in design already approved by the Purchaser are normally unaccepted.

However, should such changes become necessary on an exceptional basis, the


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Contractor shall obtain the Purchaser's approval prior to introducing any such

change.

4.2 Special Equipment, Tools and Instruments

4.2.1 Contractor shall provide all special equipment, tools and instruments required for

safe and secure transport of all components from ex works to final destination,

and for test and maintenance of Equipment provided under this Contract. Said

equipment, tools, and instruments should be listed in Contractor's Proposal

where it should be stated which are provided on a loan basis and which are

included in the Contract Price.

4.2.2 The Contractor shall furnish all necessary special tools, instruments and/or test

equipment which are required to fulfill the approved test procedure for equipment

tested by Purchaser.

4.2.3 Maintenance equipment and tools provided under this specification shall be new

and of best quality. They shall be shipped to the job site in a suitable separate

box, clearly marked with the name of the equipment they are intended for.

4.3 Contractor Services The Contractor shall provide the services listed in the following sub-articles as

part of the basic Scope of Work or as Purchaser’s option, at the per diem or lump

sum rates, all as stated in the Summary of Prices and Delivery Schedule,

Annexure “C1”. Field personnel provided by the Contractor shall be capable and

qualified to perform the required duties to the satisfaction of the Purchaser. They

shall be vested with authority to make decisions that could affect the status of the

Equipment and which are binding on the Contractor.

4.3.1 Erection Services: 4.3.1.1 The Contractor shall provide detailed instructions, drawings and erection

diagrams to permit the Purchaser to organize the erection of all supplied

Equipment.


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4.3.1.2 The Contractor shall furnish detailed instructions to maintain and keep safe every

part of the Equipment during erection until unit start-up.

4.3.2 Commissioning and Start-Up Services:

The contractor shall be responsible for the first successful commissioning of the

Air Compressors. The Contractor shall provide the services of competent start-up

engineer(s) to be responsible for starting and placing into successful service the

equipment provided under this Contract.

4.3.3 Training:

Contractor's personnel shall conduct a thorough training course pertaining to the

equipment furnished under this Specification, for Purchaser's personnel,

covering, without limitation, correct start-up, safe operation at all modes of

operation, safe shutdown and maintenance. The Contractor shall verify that the

trainees are completely familiar with all phases of such procedures and are

capable of operating and maintaining the equipment successfully.

4.3.4 Field Performance Test Contractor shall delegate at its own cost, qualified test engineer(s), to witness

Equipment field performance tests necessary to establish compliance with this

Specification, and to satisfy that the Equipment fulfills the performance

guarantees, and other Contract requirements.

Field performance tests shall be carried out by the Purchaser, using procedures

provided by the Contractor and approved by the Purchaser according to ASME

PTC and EPA codes, all as further detailed in Annexure "D" – Equipment

Performance Guarantees.

4.4 Work by Others (Facilities and Services to be provided by the Purchaser)

4.4.1 In performing its duties the Contractor shall not be required to provide facilities,

services and equipment as detailed below [further details with respect to

Purchaser's undertaking regarding qualifications, quality, quantities and

scheduling should be stated in Contractor’s proposal]:


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4.4.2 All the electrical cabling, including wiring, from power sources to the terminals

located on equipment furnished by the Contractor (Electrical/control panels, etc.).

4.4.3 All the control and interlock cabling (hardwire), including wiring, from the

Contractor supplied equipment and/or instrument to the control panels, excluding

control and instrumentation prefabricated cables between Contractor supplied

equipment and/or instrument and Contractor supplied control panels.

4.5 Documentation

4.5.1 Engineering design shall commence immediately after Contract award,

regardless of the shipping date.

4.5.2 The Contractor shall provide all documentation required by this Specification and

by applicable Standards and Codes, in the required format and form, and on a

schedule as required herein. For further details on required documentation and

its submitted schedule refer to paragraph 10 below

4.6 Terminal Connections

4.6.1 Contractor shall terminate the supply of the equipment provided under this

Specification at the location indicated below. Contractor shall include in the

Proposal a definition for terminal connections not specified in this paragraph:

- Delivery Air inlet

- Delivery Air outlet

- Condensate Drain

- Cooling water inlet

- Cooling water outlet

- Instrument Air Inlet (if required)

4.6.2 Electrical Terminal Points and Terminal Connections:

4.6.2.1 All electrical and control cabinets shall be terminated at the terminal blocks for

incoming and outgoing cables.


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4.6.2.2 All field electrical equipment and instruments shall be terminated at the

corresponding junction boxes suitable for the Purchaser's cable connections.

4.6.3 Contractor shall include in the Contract a definition for all terminal connections.

4.7 Commissioning and Tuning The commissioning and tuning of the Equipment shall be conducted in

accordance with the provisions set forth in Annexure “D” to the Contract –

Equipment Performance Guarantees.

4.8 Guaranteed Performances and Testing The performances of the Equipment shall be verified by a site test in accordance

with the provisions set forth in Annexure “D” to the Contract – Equipment

Performance Guarantees.

5. SUPPLEMENTS

The following supplements are attached hereto and their requirements form an

integral part of this specification - to the extent they are consistent and conform

with the requirements specifically set forth herein.

No. Document ID: Document Description:

5.1 Standard 01-1E Standard Specification for Contractor's

Drawing and Data Transmittal

5.2 Q-APP-02-PR Quality Requirements

5.3 ZB9/15-M67-DS0001-SB Revision: C

Data sheet for sootblowing air

compressors

5.4 MS-12.6 Standard Specification for High Reliability High Speed Gear Units

5.5 Compressors Painting specification

5.6 Instrumentation

5.7 EPD-2/99 Standard Requirements for Painting &

Corrosion Protection of Electrical

cabinets. Electrical Planning Department


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No. Document ID: Document Description:

Standard Specification.

5.8 EPD-A.03 Control Cubicles – Electrical Wiring

Requirements. Electrical Standard

Specification.

5.9 EPD-A.11A Electric High-Voltage Motors. Electrical


5.10 EPD-A.11B Electric Low-Voltage Motors. Electrical


5.11 EPD-A.19 Nominal Voltage, Frequency and Phase

Notation of Instruments and Control

Units. Electrical Standard Specification.

5.12 EPD-A.20 Contact Rating of Mechanical,

Electromechanical and Solid State

Devices. Electrical Standard

Specification.

5.13 XX0/00-E00-X00009-XX List of Approved Electrical Equipment

Manufacturers Mainly for Power Stations

(Main Contractors or Sub-Suppliers)

5.14 CL-716/1600/99 Specification for Painting on Galvanized

Surfaces by Wet or Electrostatic Powder

Painting.

In the event of a variance between the general requirements of the Supplements

and the particular requirements of the Project Specification, the Project

Specification shall take precedence

6. STANDARDS AND CODES 6.1 Standards and Codes referenced in this Specification and in the Supplements to

this specification, form an integral part of this Specification - to the extent their

requirements are consistent and conform with the requirements specifically set

forth herein. All such Standards and Codes are to the issue, including all

amendments, supplements, etc., current as of the date of the Contract, unless


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indicated otherwise. In the event of a variance between the requirements of the

Standards and Codes and the particular requirements set forth in the

Specification, the requirements specifically set forth in the Specification shall take

precedence.

6.2 The Equipment to be provided under this Specification, including all

appurtenances and accessories, shall be designed, fabricated, inspected, tested,

stamped and preserved to the extent indicated in said referenced Standards and

Codes. Where this Specification does not include such reference, The

Equipment, or any of its components, shall be designed, fabricated, inspected,

tested and preserved, as applicable, to comply with currently recognized

International and/or Contractor's Standards, whichever are tighter and more

restrictive.

6.3 The Contractor may propose Standards and Codes as alternates for, or additions

to those specified herein. A copy of each proposed Standard and code, if any,

shall be submitted (in English) for Purchaser's approval. In case Purchaser's

approval is granted, the Contractor shall remain responsible for the compatibility

of the design and the physical interfaces between the supplied Equipment and

the equipment supplied by others.

6.4 The Purchaser shall assist Contractor in identification of Israeli codes and

standards applicable to the Work. In all cases Contractor shall adhere to and

comply with the requirements of Israeli official standards found to be more

restrictive than those specified herein.

6.5 Subject to the provisions stated above, the equipment shall be designed,

manufactured, erected, tested operated and maintained in accordance with the

standards, regulations, directives and publications of the following agencies and

organizations:

ANSI: American National Standards Institute, Inc.

ASME: American Society of Mechanical Engineers.


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ASTM: American Society for Testing and Materials.

NEMA: National Electrical Manufacturer's Association.

NFPA: National Fire Protection Association.

ISA: Instrumentation, Systems and Automation society

HEI: Heat Exchanger Institute.

API: American Petroleum Institute.

IEC: International Electrotechnical Commission.

IEEE: Institute of Electrical and Electronics Engineers.

NEC: National Electrical Code.

SI: Israeli Standard.

6.6 The use of other equivalent Standards requires the purchaser agreement.

7. QUALITY ASSURANCE AND QUALITY CONTROL 7.1 Without derogating from the provisions of the General Conditions, Contractor's

quality system shall meet the requirements of Purchaser's Standard Q-APP-02-

PR, "Quality Requirements", and of the requirements of the Inspection and Test

Plan, all as further detailed in Annexure "M" to the Contract.

7.2 The Contractor and the main subcontractors shall be certified to ISO-9001-2000

by a certification body qualified to EN-45004 levels A or C or otherwise as may

be acceptable to the Purchaser.

7.3 The Contractor shall submit upon request a copy of its Quality Assurance Manual

including Quality Procedures.

7.4 The choice of main subcontractors shall be subject to Purchaser's approval and

the Contractor shall be responsible for assuring that their quality

assurance/quality control programs, including their organizations, procedures,

personnel qualifications, etc., meet Purchaser’s quality requirements. Contractor

[also Suppliers at the first stage of proposal evaluation] may propose additional

possible sub-suppliers by submitting to the Purchaser a formal request for

approval with sufficient details for evaluation including country of origin for design


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and manufacturing, proven experience with respect to equipment of the same

size and functionality, quality assurance, catalogues, functional parameters and

technical data.

8. SHIPMENT AND HANDLING OF GOODS AND DOCUMENTATION

The Contractor shall comply with the requirements for Shipment and Handling of

Equipment set forth in Annexure "R" to the Contract and additionally with the

following supplementary requirements:

8.1 All components or accessories shipped detached for field mounting or field

assembly shall be suitably tagged to allow easy identification. Tags shall be

stamped with cross reference data such as Manufacturer's Name, Contract No.,

Power Station, Unit No., reference drawing and Equipment Designation, and

shall be exceptionally durable and securely tied to items by wire or other

methods approved by Purchaser.

8.2 Unless specially designated, all Equipment and other items shall be packaged for

outdoor storage until erection. Where required by the nature of the Equipment,

the Contractor shall furnish and install necessary covers to protect the

Equipment from sand, rain, hail, wind, dust and salt spray. Equipment shall be

adequately sealed and protected during shipment to prevent corrosion and

entrance of foreign matter. All exposed machined surfaces shall be protected

where required with a suitable antirust compound or covers before shipment, for

shipment and storage until erection.

8.3 All temporary supports, lifting lugs and other temporary parts shall be painted in

yellow.

8.4 The equipment components shall be supplied as large as possible to reduce field

welds and erection time.


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9. SAFETY, ENVIRONMENT AND LOADING REQUIREMENTS

9.1 Safety

The Equipment supplied under this Specification shall meet the U.S.

"OCCUPATION, SAFETY, AND HAZARD ADMINISTRATION" (OSHA)

requirements or equivalent.

9.2 Noise

9.2.1 The noise level of Equipment within Contractor's Scope of Supply shall not

exceed an A-weighted sound level of eighty (80) dB(A) at a distance of one (1)

meter from any major surface. Contractor shall include in the Proposal a list of all

Equipment whose anticipated A-weighted noise level exceeds 80 dBA at a

distance of one (1) meter from any major surface.

9.2.2 The Contractor shall provide with his Proposal the following information (which

may serve licensing purposes):

9.2.2.1 A list of all Equipment including components and relevant operational data with:

a. The maximum sound pressure levels in dB(A) at a distance of one (1)

meter from their major surface.

b. The maximum free field sound pressure levels in dB(A) at a distance of

fifteen (15) meters from their major surface.

c. Sound power levels in dBA. Fill in this data in Supplementary Data Sheets

in Annexure "C2", "Summary of Data".

9.3 Fill in this data in Supplementary Data Sheets in Annexure "C2", Summary of

Data".

10. TECHNICAL DOCUMENTATION The Contractor shall submit technical documentation in accordance with the

provisions of Annexure "J" – Documentation Submission Schedule.


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11. SPARE AND RENEWAL PARTS

The Contractor shall provide upon purchaser's request as purchaser's option

spare parts at their itemized prices, subject to the applicable terms and

conditions, all as further detailed in Annexure "C1"- Summary of Prices and

Delivery Schedule.

12. MECHANICAL TECHNICAL REQUIREMENTS

The oil free air compressors shall be used to produce high pressure air for the

power station sootblowing air system and low pressure air for the Instrument air

system. The compressors will be located outdoor in a marine type environment,

inside an open shade. The new compressors will be connected to existing air

receivers.

12.1 Compressor Technical Data

12.1.1 Required Air parameters:

Parameter Units Design Value

Air Flow Rate (1 Ata, 15.5 C dry) scfm 2500

Discharge Pressure Psig 350

12.1.2 Design parameters:

Each compressor shall be designed according to the attached data sheet

(supplement. #5.3) with the following clarifications and additions:

Parameter Units Design Value

Inlet Pressure Psia 14.7

Inlet Air Temperature °C 47

Inlet Air relative Humidity % 95

Compressor Design Pressure Psig 450

Compressor Design Temperature °C 75

Cooling water inlet Temperature °C 38

Cooling water inlet Pressure Psig 72.5

Intake Air Quality atmospheric dust, sand

and salt content

Environment Type Marine conditions


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12.2 Compressors Technical Requirements

12.2.1 General

12.2.1.1 The Compressor Unit shall be of heavy duty construction, oil free, skid mounted,

water cooled according to the scope of supply as per paragraph 4.1.3.

12.2.1.2 The compressor shall be water-cooled by demineralized water, to be supplied by

the Purchaser.

12.2.1.3 The intake air quality is atmospheric dust with maximum concentration of 30

mg/m3 and average particle size of 1 – 5 μm. Salt approximate concentration is

0.1 mg/m3 and average particle size is 5 μm.

12.2.1.4 If applicable - The compressor shall be able to produce 125 psig air (discharge

pressure) for instrument air system after the first compression unit if a

combination of two compression units are provided and it will be done

without the use of excessive energy.

12.2.1.5 All such piping, controls and devices shall be factory-installed

12.2.1.6 The Contractor shall supply all fittings appurtenances and accessories as

specified herein and any other material necessary to form a complete

compressor unit, which will achieve and assure safe and reliable operation with

best overall performance. Components, appurtenances and accessories shall be

of proven design, verified by power plant operation.

12.2.1.7 The Contractor shall install relief valve for relief detained pressure, in order to

provide safety during maintenance.

12.2.1.8 Compressors shall be designed to allow continues or intermittent operation

without excessive heating, vibration, noise or any other limitations.

12.2.1.9 Compressors and their components shall be designed for life cycle of at least


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thirty (30) years of operation at site conditions.

12.2.1.10 All materials of construction shall be identified with ASTM or AISI standard

numbers. All features of design and construction and all materials shall be

acceptable to the purchaser.

12.2.1.11 All parts of the compressor unit shall be designed to withstand stresses resulting

from a full-voltage start of the motor.

12.2.1.12 Contractor shall be responsible for determining that each compressor, gear unit if

furnished and motor operate in dynamic balance as a unit without undue

vibration.

12.2.1.13 The equipment shall be of such a design so as not to allow oil or other materials,

which may cause a fire, explosion or coking hazard, to enter the compressed air

system.

12.2.1.14 All anchors, bracing and supports (rigid and spring type) required for piping

integral with the equipment shall be furnished by Contractor.

12.2.1.15 If a gear unit is supplied, it shall conform to MS-12.6, Standard Specification for

High Reliability High Speed Gear Units (Suppl. #3). The gear shall be designed

according to the requirements of AGMA standard last edition (despite of what is

indicated in MS-12.6).

12.2.1.16 A suitable blowoff silencer shall be furnished on the unloading cycle for 80 dBA

maximum discharge air noise, one meter from the muffler end opening and side

wall.

12.2.1.17 Automatic condensate drain valves will be supplied by contractor. These valves

shall be pneumatic operated, and activated automatically from the control system

of the compressor. "V" notch can be supplied only as an addition to the

automatic condensate drain valves.


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12.2.1.18 Cooling water regulating valves shall be supplied by the contractor.

12.2.1.19 All condensate pockets in compressors shall be drained; Contractor shall furnish

and mount traps, bypass valves and interconnecting piping as required for drains

(level switches, indicators, etc.).

12.2.1.20 Heat exchangers and all water passages of compressors shall be provided with

air vents and shutoff valves.

12.2.1.21 According to the Israeli energy regulations the minimum allowed overall

efficiency of the compressor is 65%.

12.2.2 Acoustic Enclosure and casing

12.2.2.1 The Compressor Unit shall be packed in acoustic enclosure enable to carry the

complete unit with a fork or if it's not possible, then lifting lugs shall be provided.

12.2.2.2 The enclosure opening shall enable easy access for maintenance.

12.2.2.3 The enclosure shall be designed for good ventilation in order to remove heat

produced by the motors, the air compression process and the heat exchangers.

12.2.2.4 Compressors shall be constructed to permit ease of access for inspection and

removal of rotating elements and replacement of wearing parts without

disconnecting the suction and discharge piping and without disturbing

compressor alignment.

12.2.2.5 Centrifugal compressors shall be of the horizontal or vertical split case design.

12.2.3 Air intake filter

12.2.3.1 A dry type, two-stage air intake filter-silencer shall be furnished complete with

housing and replaceable media for indoor locations. The filter will be coalescing


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type, including micro-fiber bed, ensuring low pressure drop with high rates while

collecting all particles.

12.2.3.2 The air intake filter shall be mounted on the compressor house and will be

connected to the compressor Air inlet nozzle with a suitable duct/piping which will

be provided by the contractor.

12.2.3.3 An anti re-entrainment barrier in the filter housing will collect air-water mist (from

the original air) to the bottom of the housing and drain it.

12.2.3.4 Air filter medium shall not contain any oil or other chemical that may volatize and

cause a fire or explosion hazard in conjunction with compressed air.

12.2.3.5 Filters shall be designed to minimize the frequency of filter media replacement.

12.2.3.6 The intake filter shall be suitable to handle at least 150% of compressor capacity.

12.2.3.7 A stainless steel screen shall support the micro-fiber medium, both in and

outside, ensuring resistance to high pressure air shock and pulsating air flows.

12.2.3.8 The filter shall have reliable and safe performance and include features such as:

depressurizing valve to depressurize the filter before dismantling.

12.2.3.9 Each filter shall be equipped with a differential pressure transmitter to allow

continuous monitors and element replacement in due time.

12.2.3.10 The air intake filter shall be capable to filter at least 99% of the particles larger

then 3μm.

12.2.3.11 Housing mechanical design shall conform to ASME code (or equivalent as

approved by the purchaser). Flanges shall be per ANSI B 16.5 for 2½" and

larger. Connections of 2" and smaller shall be NPT threaded.


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12.2.3.12 Filter house shall be made from stainless steel 304.

12.2.4 After cooler and Inter coolers

12.2.4.1 After cooler and Inter coolers shall be manufacturer's standard design suitable

for the service conditions specified herein.

12.2.4.2 Intercoolers and aftercooler shall have ample capacity (based on a cleanliness

factor of 85%) to cool the air to the desired temperature when supplied with the

proper amount of cooling water at the conditions specified herein.

12.2.4.3 Design of coolers shall be such that they can be readily dismantled for internal

cleaning.

12.2.4.4 After cooler shall conform to ASME boiler and pressure vessel code. Section VIII,

Division 1 and shall be Code inspected and stamped with the Code symbol.

12.2.4.5 Each cooler shall be water cooled and provided with moisture separator and

automatic drain valves and safety valves as required.

12.2.4.6 The automatic drain valves (for all coolers) will be pneumatic operated and

controlled through the Local Control Panel (LCP) of the compressor with the

ability of adjustment.

12.2.4.7 All safety valves discharge will include silencers.

12.2.4.8 Intercooler and after cooler will be designed according to TEMA 4 class "C"

standard or equal, approved by purchaser.

12.2.4.9 The compressed air temperature after the after-cooler shall not exceed 10º C

above ambient temperature.

12.2.5 Impellers (for centrifugal compressors)


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12.2.5.1 Impellers for centrifugal compressors shall be stainless steel and each impeller

shall be individually statically balanced and the entire rotating assembly shall be

dynamically balanced.

12.2.6 Pistons (for reciprocating compressors)

12.2.6.1 The piston shall be equipped with a set of sliding seals (piston rings).

12.2.6.2 Piston Rings shall be made of materials which are suitable for sealing and with

minimum wear.

12.2.7 Dynamic Balance

12.2.7.1 The compressor and drive equipment shall be dynamically balanced. The

requirements for vibration and dynamic shall be according to API 672 standard.

12.2.7.2 Each operating shaft shall be designed to accord stable operation at all operating

speeds. Particular emphasis shall be placed on critical speeds of the machinery,

which shall be sufficiently different from the operating speed to assure smooth

and vibration-free operation of the entire motor, gear unit (if required) and

compressor assembly.

12.2.8 Bearings

12.2.8.1 Compressor bearings shall be manufacturer's standard design suitable for the

service conditions specified herein.

12.2.8.2 All bearings shall be located and arranged to facilitate alignment, maintenance

and easy replacement, and shall be selected to give a minimum life based on full

rated speed as described herein.

12.2.8.3 All bearings shall be selected to provide 100,000 hr B10 life.

12.2.8.4 Suitable provisions shall be made to prevent "throwing" of grease or oil from

external bearings; shaft seals shall be provided, if required.


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12.2.8.5 All bearing should be provided with proper temperature and vibration

measurements, instruments including their signals shall be connected to the

compressor control (LCP mounted).

12.2.9 Shaft Seals

12.2.9.1 Shaft seals shall be manufacturer's standard design suitable for the service

conditions specified herein.

12.2.9.2 All components subject to rubbing and wear on contact shall be of materials that

have been tested and proven suitable for the specified service conditions.

12.2.9.3 Shaft seals shall be designed to allow starting of the compressor independent of

outside air source.

12.2.10 Piping

12.2.10.1 Internal Air piping

12.2.10.1.1 Piping shall be of welded construction and shall conform to ANSI/ASME B31.1

– Code for Power Piping. Where dismantling joints or transition to threaded

connections on equipment are required, weld-end companion flanges shall be

provided.

12.2.10.1.2 Pipe materials shall be per ASTM A 106 Grade B, Schedule 80 minimum for

sizes 2" and smaller, and Schedule 40 minimum for size 2-1/2" and larger.

12.2.10.1.3 Valves shall be brass, bronze or carbon steel.

12.2.10.1.4 Either welded or flanged inlet and outlet connections shall be furnished for

direct connection of Purchaser's piping. Flanges shall be per ANSI B16.5 and

shall be of the welding neck or slip-on welding type for sizes 2-1/2 in. and

larger and of the socket-weld or slip-on welding type for sizes 2 in. and

smaller; no threaded flanges shall be used.

12.2.10.1.5 Piping expansion joints shall be furnished, if they are required.


Page 23 of 40

12.2.10.1.6 Instrument Air tubing sized less than 2 inch shall be made of copper.

12.2.10.1.7 The use of Plastic tubing is forbidden.

12.2.10.2 Lube oil piping

12.2.10.2.1 All lube oil piping shall be made of Stainless Steel.

12.2.10.2.2 Inlet water temperature to oil coolers is according to paragraph 13.1.2 above.

12.2.10.2.3 Piping, including associated fittings, valves and joints, shall conform to the

requirements in the Project Specification. Piping shall not be less than 1/2"

size.

12.2.10.2.4 Drain and return lines to oil reservoir shall be pitched to provide gravity drain.

12.2.10.2.5 All lube oil piping shall be thoroughly cleaned to remove all contaminants and

foreign material on the inside of the pipe.

12.2.10.2.6 Lube oil systems will be flushed after erection and prior to being put in service.

Contractor shall make provisions in the equipment and furnish recommended

procedures for oil flush.

12.2.11 Painting

Before shipment, all exposed unmachined ferrous metal surfaces of the

equipment shall be thoroughly cleaned of all mill scale, rust, grease and other

foreign matter and shall be painted as follows:

12.2.11.1 All inlets and outlets shall be plugged or blanked-off before shipment.

12.2.11.2 Interior surfaces of casing shall be coated by Contractor to prevent corrosion.


Page 24 of 40

12.2.11.3 All parts of the equipment shall be painted suitable to withstand corrosion of

marine atmosphere which contains atmospheric dust as described in this

specification.

12.2.11.4 Surface of the equipment that is subject to temperatures above 250°F shall be

painted with heat-resistant paint, as approved.

12.2.11.5 The painting system shall be applied according to the attached supplement 5.5

(according to the relevant paragraph in the supplements table).

12.2.11.6 The paint manufacturers must be approved by the purchaser.

12.2.11.7 Electrical equipment shall be painted in accordance with standard Specification

EPD-2/99 (Suppl. #5) attached (standard requirements for painting and corrosion

protection of electrical cabinets).

12.2.11.8 Painting of parts involving pressure testing shall be made after completion of

testing.

12.2.11.9 The contractor shall include in his proposal the description of his painting method

(according to the requirements of suppl. #4A), to ensure that the equipment will

be suitable for the environment specified.

12.2.12 Testing

12.2.12.1 Shop Test:

12.2.12.1.1 The Compressor, including the motor and any spare internal assembly which

is purchased, shall be tested using the contractor standard mechanical test

and routine motor test, to verify compliance with all the specification. Test

results shall be submitted to the Purchaser.

12.2.12.1.2 Vibration measurements shall be done over the full capacity range from

minimum to maximum flows to confirm the mechanical integrity and vibration

behavior.


Page 25 of 40

12.2.12.2 Field Test::

12.2.12.2.1 After equipment is put in service, Purchaser may run a check test on the

equipment to ascertain that it is performing properly in every aspect.

Contractor shall (if requested) arrange to have his authorized representative

present to witness and assist in the test

12.3 Maintenance

12.3.1.1 The Compressor units shall be designed to be easily opened for inspection, parts

replacements and maintenance activities.

12.3.1.2 The maintenance downtime shall be kept to minimum as possible.

12.3.1.3 All parts shall be easily accessible for maintenance and/or adjustment. All piping

shall be arranged so as not to interfere with normal maintenance.

13. Instrumentation 13.1 All the filed mounted equipment shall have NEMA 4x pr IP65 corrosion

protection, suitable for dust pollution outdoor environment.

13.2 For instrumentation requirements refer to Supplement 5.6.

14. Electrical and Control Requirements

14.1 Control Philosophy

14.1.1 The Compressor Control System shall ensure control, regulation, protection,

supervision, warning and alarms of the Compressor and of the auxiliary

equipment, such as auxiliary motors, solenoids, etc. with adjust the closed-loop

control characteristics for optimum control of all conditions and modes of

operation of the Compressor.

14.1.2 The Compressor Control System shall be based on a programmable

microprocessor (MP) or programmable logic controller (PLC), specially assigned


Page 26 of 40

to the Compressor control. Proven experience of this Control System type within

similar scope projects shall be for at least two (2) years.

14.1.3 The Compressor Control System shall provide fully automatic start-up and

shutdown of the whole system and auxiliaries.

This shall be able to be made from the Local Control Panel (LCP) or from the

Purchaser’s Main Control Room by hardwired dry contacts from the Purchaser's

Central Control System or by a Communication Link as detailed in paragraph

14.2.2 below.

14.1.4 The Contractor shall provide all necessary interlocks for remote/local mode of

operation.

14.1.5 The Compressor Control System shall be completely wired and interlocked, to

allow safe motor start-up, including starting of the auxiliary motors.

14.1.6 Other requirements to the Control System detailed in paragraph 16.

14.2 Operating Modes

14.2.1 The Compressor Control System shall provide fully automatic start-up and

shutdown of the whole system and auxiliaries.

14.2.2 The Compressor operations shall be accomplished by the LCP or from the Main

Control Room, as follows:

Remote

No.

Operations

Hardwired Communication

Link

Local

(by LCP)

1 Local/Remote (by LCP) selection with a key No No Yes

2

Mode of operation control selection by

paragraph 14.2.3

No No Yes

3 Compressor start/stop Yes Yes No

4 Load/Unload selection No No Yes


Page 27 of 40

Remote

No.

Operations

Hardwired Communication

Link

Local

(by LCP)

“RESET” Pushbutton (as per 14.2.5), No No Yes

5 Graphic display of the Compressor systems

status

Optional Yes Yes

6 Visual alarm and trip indication Yes Yes Yes

7 Compressor data Yes Yes Yes

8 Auto and manual start of the entire systems Yes Yes No

9 At least 100 data history "snap shots" (the

data corresponding be when the trip or the

alarm occurred)

Optional Yes Yes

10 Compressor emergency Stop No No Yes

14.2.3 Generally, three following modes of operation shall be provided:

a. Constant Pressure.

b. Total closure.

c. Auto dual.

14.2.4 Sensing compressor operation:

All the compressor operations shall be automatically monitored with the

compressor control system using control equipment mounted on the compressor

and field instrument (transducers, switches, voltage measurements, etc.). The

control system shall allow a dynamic readout of all monitored data for the

purposes of data logging and trending of the compressor over a long period of

the time.

This data shall be stored in the control system for review, if a problem occurs [for

minimum one (1) week].

14.2.5 After automatic trip new start of the Compressor shall be possible only after

Local Control Panel located Pushbutton “RESET” (or other suitable name)

pushing.


Page 28 of 40

14.3 Interface and Interlocks with other systems

14.3.1 Main Motor Starter (High-Voltage Switchgear).

14.3.1.1 The Purchaser’s 6.9 kV motor starters are provided with circuit breakers (not

contactors), which have two operating coils: one for closing and one for tripping,

with operational voltage 220V DC.

14.3.1.2 The Contractor shall provide two dry contacts, at least 300V DC rated, for this

circuit breaker closing/tripping.

14.3.1.3 Rated operational current of these contacts shall be not less than 1A.

14.3.2 The Customer’s Power Station Main Control Room

The Compressor (and its main motor) remote operations shall be provided from

the customer’s Central control System by hardwired dry contacts and/or by a

communication bus Requirements to these dry contacts shall be provided by the

Contractor in the Proposal stage. Type of the communication link shall be

approved by the Purchaser in the Proposal stage.

14.3.3 Compressor cooling water system

In the proposal stage the contractor shall provide all requirements to the

Compressor cooling water control and electric system.

14.3.4 Hardwired Alarms

14.3.4.1 The number and descriptions of the hardwired alarms (digital and analog) from

the Compressor control system to the Purchaser’s Central Control System shall

be provided with the Contractor's proposals.

14.3.4.2 For each digital alarm the contractor shall provide heavy-duty 600V AC rated dry

contact.

14.3.4.3 Rated operational current of these contacts shall be not less than 0.5A (at

rated voltage 240V AC).


Page 29 of 40

14.3.4.4 Communication link

The Contractor shall provide a serial port to communication link between

Purchaser's Main Control System and Compressor Control System. Modbus

TCP/IP communication link is preferable.

14.4 Electrical equipment general requirements

14.4.1 Marking system (Electrical equipment identification IEC Tag Numbers).

14.4.1.1 The Purchaser shall assign electrical equipment identification IEC tag numbers

to all the electrical equipment. The Contractor shall use this number when

assigned, in all references to the instrument or devices on drawings,

correspondence, manuals, and on the HMI screens.

14.4.1.2 If the Contractor also chooses to use of his electrical equipment number, both

the Contractor's and the Purchaser's numbers shall appear wherever instrument

numbers are shown.

14.4.1.3 The electrical equipment identification IEC tag number shall be stamped on a

stainless steel nameplate and fastened to the electrical equipment with rust-

proof screws. Adhesive fastening is not acceptable.

14.4.2 EMI (Electromagnetic Interference)/RFI (Radio Frequency Interference)

14.4.2.1 The Contractor shall design the equipment and advise the Purchaser of the

equipment installation, to prevent any adverse effect of RFI and FMI noise on the

System, produced by the noisy environment of the plant, which includes motors,

contactors, and high voltage switching, as well as other external disturbing

electromagnetic fields, like radio transmission devices or communication

equipment.

14.4.2.2 For the circuits, which contain elements located outside the main plant building,

steps shall be taken by the Contractor to minimize the effects to lighting strikes.

This should include proper grounding recommendations, the use of surge

arrestors, optical isolators, isolating transformers or any other means, which will

provide a suitable protection.


Page 30 of 40

14.4.3 Painting and Corrosion Protection

14.4.3.1 Painting and corrosion protection of the electrical equipment shall be performed

according to purchaser Standard specification EPD-2/99 “Standard

Requirements for Painting & Corrosion Protection of Electrical Cabinets” (Suppl.

#5.7), attached herein.

14.4.3.2 All interior and exterior surfaces shall be prepared in accordance with the

Contractor's standard surface preparation procedure to produce a smooth, clean

surface free of rust, scales, dirt, and oil.

14.4.3.3 The prepared surfaces shall be painted with one coat of primer and two coats of

finish using contractor's standard paint system.

14.4.3.4 The painted surface shall be free of runs, sags, drips, waves, indentations,

scratches, etc.

14.4.3.5 Sheen of the finish coat on exterior surfaces shall be semi-gloss, exterior finish

color shall be RAL 7032.

14.4.3.6 Finish color on the interior surfaces shall be white (or RAL 7032).

14.4.4 Required Electrical Equipment Manufacturers

14.4.4.1 All Electrical Equipment Manufacturers specified in regard to its Manufacturer,

model, type etc. shall be considered the standard of supply throughout the Power

Station for standardization purposes and according to the Purchaser's Document

XX0/00-E00-X00009-XX "List of Approved Electrical Equipment Manufacturers"

(Suppl. # 5.13). Deviation from this List must have the prior written approval of

the Purchaser. Proposed manufacturers of electrical or control devices not listed

shall be approved by the Purchaser before they are incorporated into the system

design.


Page 31 of 40

14.4.4.2 However, the Purchaser reserves the right to approve or reject the Electrical

Equipment Manufacturers, as well as the model number or type selected by the

Contractor from the above List and the latter shall be abide by it.

14.4.4.3 Contractor will be responsible for his Subcontractor, in regards the above

requirements.

14.5 Power and Control Voltage Supply

14.5.1 The Purchaser will provide the following power and control voltages, 50 Hz:

System Nominal System

Voltage

Highest/

Loves

Voltage for

Equipment

Number

of

Phases

Number

of

Wires

Voltage

Adjustment

Range at

Feeding

Bus-bar

IEC 60038

Edition

7.0

2009

Main Motor 6.6 kV +10%,

-10% (start-up)

3 3/PE ± 5% Table 1

400V AC

Distribution400 V

+10%, -20% (start-

up) 3 3/N/PE ± 5% Table 1

Auxiliary*

Voltage for

cubicle/

motor

heaters

230 V +10%,

-20% (start-up)

1 1/N/PE ± 5% Table 3

System earthing for low-voltage installations shall be TNC-S type by IEC60364-1

14.5.2 The Contractor shall provide all other low voltages (less than 230V) if required.

14.5.3 The Contractor shall provide an incoming 400V AC circuit breaker with auxiliary

tripping contacts. In the event of the loss of power to the power supply, or a

power supply module failure, the auxiliary tripping dry contacts on circuit breaker

shall be closed for alarm on the Customer’s Central Control System.

14.5.4 The Contractor shall provide an incoming 230V AC circuit breaker for auxiliary

circuits (cubicle/motor heaters, etc.) with an auxiliary tripping contact. In the


Page 32 of 40

event of the loss of power, the auxiliary tripping dry contact on circuit breaker

shall be closed for alarm on the Customer’s Central Control System.

14.5.5 For the control circuits into LCP a common control transformer complying with

IEC 61558-2-2 shall be provided. The secondary coils of this control transformer

shall have one side grounded and the other protected with appropriate circuit

breaker, with auxiliary tripping dry contacts, that shall be connected to the

Customer’s Central Control System. An excess capacity of this control

transformer at least 20% shall be provided. The control transformer nominal

primary voltage shall be consistent with the Table, as per 15.5.1.

14.5.6 The Control Voltage (Control Transformer Nominal Secondary Voltage) 24V is

preferable.

14.5.7 Under no circumstances shall control voltage exceed 220 V AC.

14.5.8 Status indication lamp shall be provided at the Local Control Panel for quick

indication of a power supply failure.

14.6 Local Control Panel (LCP)

14.6.1 Suitable dimensioned and compatible Local Control Cubicle, which will contain

the Power and Control Circuits, shall accomplish the local control, maintenance

and supervising of the Compressor Control System.

14.6.2 The LCP shall be completely wired at the factory and shipped ready for

installation and connection. Terminals in the terminal blocks shall be arranged

according to the rated voltage of the circuits, corresponding to the purchaser

Standard specification EPD-A.03 “Control Cubicles – Electrical Wiring

Requirements (Suppl. #5.8), attached herein. One side of the terminal blocks

shall be left for the Purchaser’s connections.

14.6.3 Protection of the LCP enclosure shall be IP66 with corrosion protection or NEMA

4X.


Page 33 of 40

14.6.4 The LCP shall be equipped with a space heaters that be provided with an

internal thermostat. The space heaters of enclosed type shall be supplied 230V

AC, 50Hz, and shall have a power approximately 200W/m3.

14.6.5 Space of 20% expansion of logic modules, equipment, terminals, devices, etc.

and associated cabling in the LCP for a future expansion, shall be provided.

Implemented spare of 20 % by means of memory, I/O, termination, etc. should

also be provided.

14.6.6 The halogen-free wire ducts should be filled no more than 80 % and should be

closed without any difficulty. The distance from the wire duct up to the wired

terminal/instrument/device should not be less than 50 mm.

14.6.7 Cable and wiring ends connected to terminals shall be marked with the

appropriate terminal numbers.

14.6.8 Switching, control and supervising shall be possible from the front of the cubicle

without need for opening or removing of doors or covers. All maintenance,

inspection, renewal or installation of equipment within the control cubicle shall be

possible through the front access of the control cubicle only.

14.6.9 All items shall be mounted, wired and connected so that adjustments,

maintenance, removal and replacement may be accomplished without

interruption of service to adjacent items.

14.6.10 All items mounted inside the Control Panel shall be so located that terminal

markings are clearly visible and adjustments can be made without use of special

tools.

14.6.11 Unless otherwise specified, coaxial, thermocouple wires and special shielded

cables will be run by others, directly to the instrument and device terminals.

Space for these cables shall be provided by the Contractor.


Page 34 of 40

14.7 Electric Motors

14.7.1 The following voltage rating, phase and frequency are available for electric

motors:

a) Three-phase 6.6 kV, 50 Hz for motors 200 kW and above.

b) Three-phase 400 V, 50 Hz for motors less than 200 kW and above 0.4 kW.

c) One-phase 230V, 50 Hz for motors 0.4 kW and less.

14.7.2 Electric High-Voltage Motors (6.6 kV)

14.7.2.1 Electric High-Voltage Motors shall conform to, and tests shall be conducted in

accordance with the Purchaser's Standard Specification EPD-A.11A “Electric

High-Voltage Motors. Electrical Standard Specification” (Suppl. #5.9), attached

herein).

14.7.2.2 The Contractor shall supply all the technical data required for selecting/checking

the motor in connection with its functions, mounting and maintaining it and

designing the motor supply (including start conditions, bus transfer, short-circuit

contribution and protection of the motor and of the supply pat). For this reason

the Contractor shall provide the filled Data Sheets for each motor. Motor Data

Sheet Forms shall be provided in accordance with Annexure 3 of the

Purchaser's Standard Specification EPD-A.11A “Electric High-Voltage Motors.

Electrical Standard Specification” (Suppl. #5.9), attached herein.

In the proposal stage the Motor Data Sheet Forms in accordance with Annexure

2 of this Standard Specification is also acceptable.

14.7.2.3 Ratings Data:

- Rated Voltage: 6.6KV, three phase, 50Hz;

- Rated Power - calculated by the Contractor;

- Locked Rotor Current: 5.

14.7.2.4 The motor enclosure shall be designed according to IP55 degree of protection.


Page 35 of 40

14.7.2.5 Supply cable size:

The maximum supply cable size for terminal box design, including cross-section,

inlet hole diameter and bending radius inside the box, will be indicated by the

Purchaser according to the motor data and location.

14.7.2.6 The short-circuit level required for the terminal boxes shall be 40 kA.

14.7.2.7 Requirements for surface protection by painting shall be in accordance with the

Contractor's standards as approved by Purchaser.

14.7.2.8 Requirements for allowed sound level shall be in accordance with

the Contractor's standards as approved by Purchaser.

14.7.2.9 Motors shall be prepared for extended storage by protecting the motor bearings

with either a protective grease covering or liquid preservative. Motors shall be

tagged to show that a preservative has been used. The procedure to be followed

before motors are placed in operation shall be indicated.

14.7.3 Electric Low-Voltage Motors

14.7.3.1 Electric Low-Voltage Motors shall conform to, and tests shall be conducted in

accordance with the Purchaser's Standard Specification EPD-A.11B “Electric

Low-Voltage Motors. Electrical Standard Specification” (Suppl. #5.10), attached

herein.

14.7.3.2 Each motor shall comply with the Project Specifications. In the event of variance

between the general requirements in the Standard Specifications and the

particular requirements of the Project Specification, the Project Specifications

shall take precedence.

14.7.3.3 The Contractor shall supply all the technical data required for selecting/checking

the motor in connection with its functions, mounting and maintaining it and

designing the motor supply (including start conditions, bus transfer, short-circuit

contribution and protection of the motor and of the supply pat). For this reason


Page 36 of 40

the Contractor shall provide the filled Data Sheets for each motor including built-

in motors. Motor Data Sheet Forms shall be provided in accordance with

Annexure 3 of the Purchaser's Standard Specification EPD-A.11B “Electric Low-

Voltage Motors. Electrical Standard Specification” (Suppl. #5.10), attached

herein. In the proposal stage the Motor Data Sheet Forms in accordance with

Annexure 2 of this Standard Specification is also acceptable.

14.7.3.4 The motor enclosure shall be designed according to IP55 degree of protection.

14.7.3.5 Supply cable size.

The maximum supply cable size for terminal box design, including cross-section,

inlet hole diameter and bending radius inside the box, will be indicated by the

Purchaser according to the motor data and location.

14.8 Software and database

14.8.1 Communication software. PC (Personal Computer) supervisor

Software application (run-time).

a) Each software package and each software product shall be supplied with

licenses and with detailed professional instructions in English and Hebrew

(if any).

b) In addition to the software package the Contractor shall provide a listing of

all signals that shall be implemented in the Customer’s Central Control

System.

c) A complete alarm list to be provided during the final design review

meeting. The Contractor shall provide this alarm list with a blank column to

be filled by the Purchaser with the Hebrew description of each alarm.

14.8.2 Database

The Contractor shall provide a database of all the I/O (inputs/outputs). The

standard construction of databases should be approved by the Purchaser. The

database shall include (but not be limited to) the following data for each I/O.


Page 37 of 40

a. IEC tag number.

b. Description.

c. PLC address, including PLC, rack, drop and slot numbers.

d. Model and manufacturer.

e. Location.

f. Logic status/current value with zero and full scale value with

engineering units.

g. Drawing numbers.

h. Electrical parameters.

i. Point quality.

15. Inspection and Test

15.1 Test Procedure

The Contractor shall provide a complete, detailed description of the test

procedure for purchaser review, 30 days prior of the tests, to be performed. This

procedure shall be in the form of a checkout list and used throughout the test.

Each step shall consist of three statements as follows:

a. Status of system prior to this test.

b. Actions to be performed and results expected.

c. Results, system operation and final status.

15.2 System final performance guarantees tests as per Annexure "D".

15.3 The system shall be tested in the field by the Purchaser. this test program may

be in addition to any testing performed by the contractor during normal startup

activities. These tests shall be performed prior to the commercial operation date

of the unit, but not until after all work and testing are completed by the

Contractor. A representative of the Contractor shall witness the field tests.

15.4 Test procedures shall be agreed upon during signing the Contract.

15.5 These tests shall become the base to final payment.


Page 38 of 40

15.6 The performances of the Equipment Package shall be tested in accordance with

the latest editions (valid on the date of Contract Execution) of the following:

a. ASME: American Society of Mechanical Engineers: PTC 10

b. HEI: Heat Exchange Institute, Inc.

c. HI: Hydraulic Institute.

d. ISO11204 Acoustic – Noise Emitted by Machinery and Equipment

16 Control System Requirements

16.1 Air Compressor Control

16.1.1 Each compressor shall be furnished with all controls, instruments, and

accessories as required for safe and reliable monitoring and controlling of the

compressor from no load to full load, and for shutdown. Unloaded operation

below the surge point shall provide only sufficient flow to cool the machine at

minimum horsepower. The control of the centrifugal air compressor shall be

according to the following:

a. In addition to the two basic types of control systems: two-step (total

closure) and modulating (constant pressure), a third type combines both

modes of control, resulting in an automatic dual control system shall be

supplied by the Contractor.

b. For the centrifugal air compressor the control system shall be able to

operate the compressor in two step modes system, i.e. unloader controlled

speed operation actuated by pressure from the compressor discharge and

automatic unloading on stating.

c. Also a fully automatic start up and shut down if the system shall be

provided.

d. All necessary interlocks for all above mentioned modes of operation shall

be provided by the contractor.


Page 39 of 40

16.1.2 The following, but not limited to, including measuring instruments, control and

interlock devices, lamps, switches, panels etc. shall be provided by Contractor.

Each compressor shall be provided with auto start and stop control and pressure

control. Automatic valve unloading shall be supplied, to maintain pressure in the

receiver within closely adjustable limits. Low oil pressure, high oil temperature,

high air temperature and high vibration level shall trip the compressor.

HMI Indication shall include:

a. Oil pressure and temperature.

b. Air temperature.

c. Air pressure.

d. Air/Oil dirt indicator.

e. Bearings' vibration level.

f. Traps' level.

16.2 The constant pressure and surge control system provides continuous air

delivering at a constant discharge pressure, while providing automatic surge

control to protect against periods of low process demand.

16.3 The pressure control system is of the constant-speed inlet throttle valve type. The

control system through pressure controller will sense this increase in pressure.

16.4 The surge control system is of the blow-off type. Surge control will prevent the

compressor from surge during periods of low flow demand.

16.5 The total closure control system mode is suitable for the compressor operation

with continuous air delivery under base load conditions, or loads and unloads the

machine for variable load requirements.


Page 40 of 40

17. PAINTING REQUIREMENTS

Without derogating from the above, all Carbon Steel equipment shall be supplied

hot dipped or electrolytically galvanized and painted according to Supplement

#20 "Specification for Painting On Galvanized Surfaces by Wet or

Electrostatic Powder Painting" and the compressor painting specification

shall be according to supplement 5.5.

– F I N A L –

Documents

The Israel Electric Corp. Ltd