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CONTROL & INSTRUMENTATION
STATION STANDARD CHECK LIST SHEET 1 OF 15
INSTRUMENT : DIGITAL INDICATOR
SUPPLIER_____________________________________________________________
MANUFACTURER_____________ TYPE _____________ SERIAL NO. ___________
RANGE_____________ INPUT_____________ OUTPUT_______________________
POWER SUPPLIES_________ VOLTS_____________ AMPS _______ HZ _________
PLANT SYSTEM_____________________ LOCATION__________________________
TAG NO. UNIT
DUTY
NO. ACTIVITY REMARKS
1.0
1.1
Continuity Test:To be done as per SFI, cubicle & rack diagram and Relayscheme.
High Voltage Test for Cabinet Wiring
a. Pull out all modules from edge connectors.
b. Apply HV as per group details given below andmeasure IR before and after applying HV using of500V AC megger.
DEFECTS & COMMISSIONS CONTINUATION OVERLEAF
REMARKS
N.T.P.C.
SIGNATURE
BHEL
SIGNATURE
DATE
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CONTROL & INSTRUMENTATION
STATION STANDARD CHECK LIST SHEET 2 OF 15
INSTRUMENT : DIGITAL INDICATOR
TAG NO. UNIT
ACTIVITY
DEFECTS & COMMISSIONS CONTINUATION OVERLEAF
REMARKS
N.T.P.C.
SIGNATURE
BHEL
SIGNATURE
DATE
Group Details
A 240V AC 1ph. 50 Hz for socket(TBC 05, 06)
B 110V AC 1 Ph. 50Hz p.s. input and outputcommands. (TBC 01, 02)
C Electronic group (24V group)
D All pins of console connector E All pins of prefab cable connector F Body of Console
G Body of Connector H Earth
Group 1 Group 2 H.V. to beapplied
IR beforeH.V. Test
H.V. appliedfor 1 mon.
IR afterHV test
A B+C+H 1.5 KV
B C+H 1.5 KV
C H 500 V
D F 500 V
E G 500 V
Note: Each prefab cable is to be tested separately. There are 10 nos. of prefab cables.
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CONTROL & INSTRUMENTATION
STATION STANDARD CHECK LIST SHEET 5 OF 15
INSTRUMENT : DIGITAL INDICATOR
TAG NO. UNIT
ACTIVITY
3.0 START PERMISSIVES
a) WALL BLOWERS
(i) Main Steam pressure (PS8504) must not be low.(ii) Metal temperature for MTE803 to 836 must be high.
b) LR BLOWERS
(i) Main Steam pressure (PS8504) must not be low.(ii) Metal temperature for MTE801 & 802 must be high.
c) AH BLOWERS
(i) Main Steam pressure (PS8504) must not be low.(ii) AH drain line temperature must be present.
PRIMARY AHB BLOWERS
(i) PRESS AH VALVE UV00002 OPEN PB.(ii) AUX VLE UV0003 CLOSED & UV00002 OPEN must be
present.(iii) AH MAIN (PS8516) STEAM PRESSURE LOW must be
present.Or
AUX VLE UV0003 OPEN must be present.SECONDARY AHB(i) (PS 8536) & PS8538 STEAM PR LOW must be absent.
DEFECTS & COMMISSIONS CONTINUATION OVERLEAF
REMARKS
N.T.P.C.
SIGNATURE
BHEL
SIGNATURE
DATE
7/28/2019 C&I Check List
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CONTROL & INSTRUMENTATION
STATION STANDARD CHECK LIST SHEET 8 OF 15
INSTRUMENT : DIGITAL INDICATOR
TAG NO. UNIT
ACTIVITY
5.0.1 SELECTION OF AN AUTOMATIC PROGRAM (SEQUENCE)
A desired sequence can be selected by pressing thePROGRAM SELECT PB. PROGRAM SELECT PB light willglow. Only one SEQUENCE can be selected at a time.
PROGRAM OPERATING display indicates the number of theprogram (Sequence) in operation or the last program selected.During switching ON of the power supply this lamp will be resetto O
STARTING OF AN AUTOMATIC PROGRAM:
a) LOCAL/REMOTE switch in REMOTE position.
b) No fault in system.
c) All blowers in initial position.
d) All Main valves position OK (open)
e) For P6 program AH line valve OR Aux. Steam valveopen.
DEFECTS & COMMISSIONS CONTINUATION OVERLEAF
REMARKS
N.T.P.C.
SIGNATURE
BHEL
SIGNATURE
DATE
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CONTROL & INSTRUMENTATION
STATION STANDARD CHECK LIST SHEET 9 OF 15
INSTRUMENT : DIGITAL INDICATOR
TAG NO. UNIT
ACTIVITY
To start an automatic program press and hold the desired (i.e.selected) PROGRAM SELECT PB & START PROGRAM PBuntil,
a) START PROGRAM PB light glows.
b) MANUAL START PB light turns off (if it was ON)
c) RESET PB light turns off if ON.
d) PROGRAM OPERATING will display the number of theselected sequence.
Completion of an automatic sequence will have the followingeffects.
a) START PROGRAM PB light will go off.
b) RESET PB light will be ON.
c) MANUAL START PB light will be ON.
d) PROGRAM OPERATING display will indicate thenumber of the program last operated.
DEFECTS & COMMISSIONS CONTINUATION OVERLEAF
REMARKS
N.T.P.C.
SIGNATURE
BHEL
SIGNATURE
DATE
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10/16
CONTROL & INSTRUMENTATION
STATION STANDARD CHECK LIST SHEET 10 OF 15
INSTRUMENT : DIGITAL INDICATOR
TAG NO. UNIT
ACTIVITY
5.0.3
5.04
STOPPING OF AN AUTOMATIC SEQUENCE
An automatic sequence gets interrupted before completion, ifthere is a fault in the system. Program operation will remainsuspended at that particular step where fault has occurred.
In the event of a fault the following indications will be availabe.
a) Corresponding Alarm lamp on mimic will be ON.
b) Lamp on the mimic diagram will flash showing the exactstep where the fault has occurred.
c) RESET PB light will flash.
The fault can be reset by pressing the RESET PB after fault iscleared.
RESET OF THE SEQUENCE
Any program/sequence which has been stopped before normalcompletion due to fault may be restarted from the next stepfrom where it was stopped after resetting the fault by pressingPROGRAM SELECT PB & START PROGRAM PB.
DEFECTS & COMMISSIONS CONTINUATION OVERLEAF
REMARKS
N.T.P.C.
SIGNATURE
BHEL
SIGNATURE
DATE
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CONTROL & INSTRUMENTATION
STATION STANDARD CHECK LIST SHEET 11 OF 15
INSTRUMENT : DIGITAL INDICATOR
TAG NO. UNIT
ACTIVITY
5.0.5
6.0
7.0
RESET OF AN AUTOMATIC PROGRAM
Any program which has been stopped before normalcompletion of that program or an undesired sequence alreadyselected, can be reset to the beginning of the program by
pressing and holding its PROGRAM SELECT PB & RESET PB,until PROGRAM SELECT PB light goes OFF.
The program may be restarted from the beginning by followingthe steps indicated in starting of an automatic program.
SEQUENCE CHECK
Before starting of an automatic program, to know the blowersselected in that sequence, press and hold PROGRAM SELECTPB & SEQUENCE CHECK PB. On mimic diagram, lights will be
ON for all blowers put in that sequence. Release of any PB willterminate the check.
PROGRAM CHECK
PROGRAM CHECK is done in the middle of an automaticprogram. To do so press and hold PROGRAM SELECT PB &PROGRAM CHECK PB. On mimic diagram lights will glowsteadily for all blowers that have already been operated andlights will flash for all blowers that have not yet been operated.Releasing the PB will terminate the check.
DEFECTS & COMMISSIONS CONTINUATION OVERLEAF
REMARKS
N.T.P.C.
SIGNATURE
BHEL
SIGNATURE
DATE
7/28/2019 C&I Check List
12/16
CONTROL & INSTRUMENTATION
STATION STANDARD CHECK LIST SHEET 12 OF 15
INSTRUMENT : DIGITAL INDICATOR
TAG NO. UNIT
ACTIVITY
8.0
8.0.1
SEQUENTIAL OPERATION OF BLOWERS
AUTO SEQUENCE:
a) Select the desired sequence by pressing PROGRAMSELECT PB.
b) ENSURE THAT
LOCAL/REMOTE SWITCH is in REMOTE position.
No fault in system
Main valve open
c) Start the sequence by pressing desired PROGRAMSELECT PB & START PROGRAM PB.
d) Check the command output.
e) If command output is available, change All blowers in
initial position to OFF, and then Blower Operating toON. Corresponding lamp on mimie diagram will glow.
f) Now change Blower Operation to OFF and the lamp onmimic will go OFF.
g) Change All blower in initial position to ON. Nowcommand output will be available for next blower insequence.
h) Repeat steps d to g.
i) If a particular blower is disabled the output command will
not be available for that blower.
DEFECTS & COMMISSIONS CONTINUATION OVERLEAF
REMARKS
N.T.P.C. BHEL DATE
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SIGNATURE SIGNATURE
CONTROL & INSTRUMENTATION
STATION STANDARD CHECK LIST SHEET 13 OF 15
INSTRUMENT : DIGITAL INDICATOR
TAG NO. UNIT
ACTIVITY
8.0.2 MANUAL START
a) Dial blower number on THUMBWHEEL SWITCH.
b) Press EXECUTE PB & MANUAL START PB.
c) Repeat steps d to f mentioned in AUTO sequence.
LOCAL START RELEASE FOR BLOWERS:
Put the Key to LOCAL POSITION.Ensure that
a) Main valve position open.
b) No sequence is selected.
c) All blowers in initial position.
d) No fault.
Blower local start permit lamp will glow and relay K146 will beenergised.
DEFECTS & COMMISSIONS CONTINUATION OVERLEAF
REMARKS
N.T.P.C.
SIGNATURE
BHEL
SIGNATURE
DATE
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CONTROL & INSTRUMENTATION
STATION STANDARD CHECK LIST SHEET 14 OF 15
INSTRUMENT : DIGITAL INDICATOR
TAG NO. UNIT
ACTIVITY
9.0
10.0
10.0.1
10.0.2
LOCAL START RELEASE FOR BLOWERS:
Put the key to LOCAL position. Ensure that
a) Main valve position open
b) No sequence is selected
c) All blowers in initial position
d) No fault.
Blower local start permit lamp will glow and relay K146will be energised
LOCAL START RELEASE
FOR MAIN VALVE:
a) Put MAIN/BYPASS VALVE KEY SWITCH in LOCALposition
b) Ensure Main Valve UV0001A motor not overloadedRelay K201 will glow.
FOR BYPASS VALVE:
a) Put MAIN/BYPASS VALVE KEY SWITCH in LOCALposition
b) Ensure Bypass Valve UV0001B motor not overloaded
Relay K202 will glow.
DEFECTS & COMMISSIONS CONTINUATION OVERLEAF
REMARKS
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SIGNATURE SIGNATURE
CONTROL & INSTRUMENTATION
STATION STANDARD CHECK LIST SHEET 15 OF 15
INSTRUMENT : DIGITAL INDICATOR
TAG NO. UNIT
ACTIVITY
10.0.3
10.0.4
11.0
FOR AH VALVE:
a) Put AH steam valves KEY SWITCH in LOCAL position.b) Ensure AH VLV MOTOR UV0002 not overloaded
Relay K203 will glow
FOR AUX VALVE:
c) Put AH steam valves KEY SWITCH in LOCAL position.d) Ensure AUX VLV MOTOR UV0003 not overloaded
Relay K204 will glow
MAIN/BYPASS VALVE OPERATION:
To operate the main/bypass valves, put the selector switch inREMOTE position
a) Press OPEN MAIN/BYPASS VALVE PB. Correspondingrelay will be energised (K144), if
I. Valve motor overloaded is not present.
II. Air flow in boiler is sufficient is present.
III. PCV 8501A&B are closed.
b) Press CLOSE MAIN/BYPASS VALVE PB.Corresponding relay k143 will be energised.
DEFECTS & COMMISSIONS CONTINUATION OVERLEAF
REMARKS
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