ML17250A571

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Verification of Emergency Start Logic Auxiliary Feedwater Pumps.
ML17250A571
Person / Time
Site: Ginna Constellation icon.png
Issue date: 05/17/1980
From: Schuler T, Snow R
ROCHESTER GAS & ELECTRIC CORP.
To:
Shared Package
ML17250A560 List:
References
TASK-10, TASK-RR RSSP-3.0, NUDOCS 8009160570
Download: ML17250A571 (10)


Text

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,,0 UNIT 41 SeM 9p ROChe. STER GAS AND ELECTRIC CORPORATION CO M P t'T ED GINNA STATION OATE:-

CO~~OLLED COPY NUMBER TlhK'.-

PROCEDURE NO. RSSP-3,0 REV. NO.

VERIFICATION OF EMERGENCY START LOGIC AUXILIARY FEEDWATER PUMPS TECHNICAL REVIEW PORC 5/12/80 QC REVIEW DATE APPROVED FOR USE PLANT SUPERINTENDENT DATE QA ~

REVIEWED BY:

NON-QA CATEGORY <<1.0 THIS PROCEDURE CONTAINS 6 PAGES

S 0

RSSP-3.0:1 RSSP-3.0 VERIFICATION OF EMERGENCY START LOGIC FOR AUXILIARYFEEDWATER PUMPS

1.0 PURPOSE

To provide the steps necessary for the verification of Emergency Start Logic for Auxiliary Feedwater Pumps.

2.0 TEST REQUIREMENTS:

2.1 Verify motor-driven and turbine-driven auxiliary feedwater pumps start upon lo lo steam generator level.

2.2 Verify motor-driven auxiliary feedwater pumps start upon loss of both Main Feedwater Pumps.

2.3 Verify that lA 8 lB Steam Generator's steam admission and discharge valves or actuating relays to turbine driven pump open upon undervoltage on busses llA and llB.

3.0 REFERENCES

3.1 Elementary Wiring Diagrams Miscellaneous Relay Rack Drawing llOE073 3.3 Safeguard Prints llOE053 .

4.0 INITIAL CONDITIONS:

4.1 Plant is in cold shutdown condition.

4.2 Operation of Main Feedwater Pumps is not required to secure proper contact interlocking. The M.F.P. breakers (A 8 B) are in racked out position with auxiliary switch lever arm blocked to simulate breaker closed position.

4.3 Motor driven auxiliary Feedwater Pumps (1A & lB) 480 volt breakers are in the test position with control power on.

4.4 4160 volt busses 11A and 11B are energized.

4.5 Lead Test Personnel are qualified~ in accordance with A-1102.

4.6 Ginna Station Test Tags Control Program, A-1103 shall be utilized as required.

PRECAUTIONS:

Plant, holding procedure will be observed for affected equipment.

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RSSP-3.0:2 5 ~2 If test is performed while plant maintenance is being performed verify that conductance of test will not conflict with maintenance work or compromise safety of maintenance people.

.0 INSTRUCTIONS:

6.1 Auxiliar Feedwater Pum start u on Lo Lo steam enerator levels 6.1.1. Ensure that the following bistable units, utilized for developing the-trip matrix for automatic auxiliary feedwater pump start, are energized:

NOTE: Steam Generator levels lA and 1B must be above 15$ level.

If not, a simulated D.C. current, input equivalent, to this level must be injected into the input terminals.

LI 461 A/B (RED)

LI 462 A/B (BLUE)

LI 463 C/D (YELLOW)

II 471 A/B (YELLOW)

LI 472 A/B (RED)

LI 473 C/D {WHITE)

Place steam generator blowdown key switches into Normal.

6.1.3 Verify the following:

4160 Volt 11A bus is energized 4160 Volt llB bus is energized 6.1.4 Auxiliary contacts on Main Feedwater Pumps, are open (auxiliary switch lever blocked to breaker closed position) 1A M.F.P. breaker aux. "b" contact open lB M.F.P. breaker aux. "b" contact open 6.1.5 Place the following control board switches in the automatic position and place Test tags at switch:

1A MAFP switch in auto 1B MAFP switch in auto lA Steam admission valve switch to opexable TDFP {3505A) in auto if valve lB Steam admission valve switch'.to operable TDFP (3504A) in auto if valve NOTE: MAFP = Motor driven auxiliary feedwater pumps TDFP = Turbine driven auxiliary feedwater pump MFP = Main feedwater pumps 6.1.6 Verify the following:

1A MAFP breaker remains open 1B MAFP breaker remains open

RSSP-3.0:3 (Cont'd) 1A steam admission valve remains closed or actuating relay MFPX lA2 remains de-energized (Rack RA-2) 1B steam admission valve remains closed or actuating relay MFPX 182 remains de-energized (Rack RA-3) 6.1.7 Simulate 2/3 lo lo level logic for lA steam generator by placing following bistables in the trip mode (lo lo level proving switch in protection rack).

LI 462A (BLUE) Tripped Mode LI 463C (YELLOW) Tripped Mode 6.1.8 Verify the following has occurred automatically:

1A MAFP breaker closed 1B MAFP breaker closed Return bistable proving switch for bistable units which were tripped in step 6.1.7 to normal.

LI 462A (BLUE) return to normal LI 463C (YELLOW) return to normal 6.1.10 By use of respective control board switches ensure the following:

lA MAFP breaker tripped 1B MAFP breaker tripped TDFP discharge valve 3996 closed if operable 1.11 Simulate 2/3 lo lo level logic for 1B steam generator by placing the following bistables in the tripped mode (lo lo level proving switch in protection rack),

LI 472A (RED) Tripped Mode LI 473C (WHITE) Tripped Mode 6.1.12 Verify the following has occurred automatically:

1A HAPP breaker closed 1B MAFP breaker closed 6.1.13 Simulate 2/3 lo lo level logic for lA Steam Generator by placing the following bistables in the tripped mode:

LI 461B (RED) Tripped Mode LI 462A (BLUE) Tripped Mode 6.1.14 Verify the following has occurre'd3automatically:

lA steam admission valve to'DFP (3505A) open or HFPX1A2 energized (Rack RA-2) .

1B steam admission valve to TDFP (3504A) open or MFPX1B2 energized (Rack RA-3)

TDAFP discharge valve (3996) open or HFPXlA2 and HFPX1B2 energized (Racks RA-2 and RA-3)

RSSP"3.0:4 6.1.15 Return the proving switches for the following bistable units to normal:

I,I 472A (RED) returned to normal LI 473C (WHITE) returned to normal LI 461B (RED) returned to normal LI 462A (BLUE) returned to normal 6.1.16 Trip the following breakers from control board switch and place switch in pull stop position:

Breaker Tri ed Switch in Pull Sto lA MAFP lB MAFP 6.1.17 By use of respective control board switches ensure the following if valves are operable:

lA SG Steam admission valve to TDFP (3505A) closed 1B SG Steam admission valve to TDFP (3504A) closed TDFP discharge valve (3996) closed 6.1.18 Ensure that lA and lB Steam Generator blowdown valves (CV-70 6 CV-71) are open.

NOTE: Control switches for these valves are located on panel by sample room in controlled intermediate building.

Other interlocks exist for these valves and must all be satisfied before valves can be opened.

i MCB Master Blowdown Switch in Remote CV-70 and CV-71 Key Switches in Normal lA S/G blowdown valve CV-70 open lB S/G blowdown valve CV-71 open 0 eration of steam admission valves to TDFP (from undervolta e llA 6 11B Busses) 6.2.1 Ensure that the 1A R 1B S.G. Steam admission switches for TDFP are in the "auto" position or actuating relays MFPX1A2 and MFPXlB2 are de-energized:

1A steam admission switch in auto (3505A) 1B steam admission switch

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in auto (3504A) 6.2.2 Simulate undervoltage condition on bus llA by actuating undervoltage device 27-1/llA. (Open knife switch number 8).

6.2.3 Simulate undervoltage condition 'on bus llB by actuating undervoltage device 27-1/llB. "(Open knife switch number 8).

6.2.4 Verify that the following has occurred automatically:

l4 MFPXlA2 energized or 1A S.G. steam admission valve to TDFP (3505A) open MFPX1B2 energized or 1B, S.G. steam admission 'valve to TDFP (3504A) open

RSSP-3.0:5

~ 6.2.4 (Cont'd)

MFPKlA2 and MFPX1B2 energized or TDFP discharge valve (3996) open Blowdown valves CV-70 and CV-71 closed Perform the following:

Restore UV device 27-1/llA (bus 11A) to normal Restore UV device 27-1/llB (bus 11B) to normal 6.2.6 By use of respective control board switches ensure the following if valves operable:

lA S.G. steam admission valve to TDFP (3505A) closed 1B S.G. steam admission valve to TDFP (3504A) closed TDFP discharge valve (3996) closed 6.2. 7 Simulate undervoltage condition on bus llA by actuating under-voltage device 27-2/11A. (Open knife switch number 8).

6.2.8 Simulate undervoltage condition on bus llB by actuating under" voltage device 27-2/llB. (Open knife switch number 8) ~

6.2.9 Verify the following has occurred automatically:

HFPX1A2 energized or 1A S.G. steam admission- valve to TDFP (3505A) open HFPXlB2 energized or 1B S.G. steam admission valve to TDFP (3504A) open HFPXlA2 and MFPXlB2 energized or TDFP discharge valve (3996) open Blowdown valves CV70 6 CV?1 closed 6.2,.10 Restore system to before test condition by performing the following:

Restore UV device. 27-2/llA (bus llA) to normal Restore UV device 27-2/llB (bus llB) to normal Place lA MAFP CB switch in Pull Stop Place lB MAFP CB switch in Pull Stop Close 1A steam admission valve to TDFP (3505A) if operable Close 1B steam admission valve to TDFP (3504A) if operable Close TDFP discharge valve (3996) if operable Blowdown valves CV70 6 CV71 open 6.3 Motor Driven Auxiliar FW Pum Start on Loss of Both HFP 6.3.1 Place control board switch for HAFP's in auto position 1A HAFP switch in auto ~

1B MAFP switch in auto r 6.3.2 Unblock the mechanical linkage on HFP breakers, or install Jumper wire, so that auxiliary "B",'contac'ts are closed.

(This will simulate a breaker open position for HAPP start).

lA MFP breaker "b" contact closed 1B MFP breaker "b" contact closed

RSSP"3.0:6 6.3.3 Verify'that following have closed automatically:

lA MAFP breaker closed lB MAFP breaker closed lA 6 1B SG blowdown valves CV-70 6 CV-71 closed 6.3.4 Place both A 6 B Auxiliary Feed Pump control switches to pull stop.

II AlI tlBtl 6.3.5 Block the mechanical linkage on the MFP breaker to simulate a closed position.

6.3.6 Verify CV-70 and CV-71 open.

6.4 Remove simulators and unblock main feedwater pumps.

6.5 Additional system alignment to be performed as subsequent operation requires.

6.6 Reopen states clips if needed to block Auto start.

DEFICIENCIES:

CORRECTIVE ACTION:

COMPLETED BY:

I'ATE COMPLETED:

SHIFT SUPERVISOR:

RESULTS AND TEST REVIEV: DATE:

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