C&I Check List

7/28/2019 C&I Check List

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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


2/16




TAG NO. UNIT

ACTIVITY


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.


3/16


4/16


5/16




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.


REMARKS

N.T.P.C.

SIGNATURE

BHEL

SIGNATURE

DATE


6/16


7/16


8/16




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.


REMARKS

N.T.P.C.

SIGNATURE

BHEL

SIGNATURE

DATE


9/16




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.


REMARKS

N.T.P.C.

SIGNATURE

BHEL

SIGNATURE

DATE


10/16




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.


REMARKS

N.T.P.C.

SIGNATURE

BHEL

SIGNATURE

DATE


11/16




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.


REMARKS

N.T.P.C.

SIGNATURE

BHEL

SIGNATURE

DATE


12/16




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.


REMARKS

N.T.P.C. BHEL DATE


13/16

SIGNATURE SIGNATURE




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.


REMARKS

N.T.P.C.

SIGNATURE

BHEL

SIGNATURE

DATE


14/16




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.


REMARKS

N.T.P.C. BHEL DATE


15/16

SIGNATURE SIGNATURE




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.


REMARKS

N.T.P.C. BHEL DATE


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