ML20078Q120
| ML20078Q120 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 02/09/1995 |
| From: | Marlow T ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| Shared Package | |
| ML17263A939 | List: |
| References | |
| ECA-1.2, NUDOCS 9502210095 | |
| Download: ML20078Q120 (7) | |
Text
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REV: 3 ECA-1.2 LOCA OUTSIDE CONTAINMENT PAGE 1 of 7
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ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE M-[~
O LUILLc PLANT SUPERINTENDENf M-9-9[
EFFECTIVE DATE CATEGORY 1.O REVIEWED BY:
O 9502210095 950209 DR ADOCK 0500 4
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TITLE:
REV: 3 ECA-1.2 LOCA OUTSIDE CONTAINMENT PAGE 2 of 7 A.
PURPOSE - This procedure provides actions to identify and isolate a LOCA outside containment.
B.
ENTRY CONDITIONS / SYMPTOMS 1.
ENTRY CONDITIONS - This procedure is entered from:
a.
E-0, REACTOR TRIP OR SAFETY INJECTION, and E-1, LOSS OF REACTOR OR SECONDARY COOLANT, on abnormal radiation in the auxiliary building due to a loss of RCS inventory outside containment.
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REV: 3 ECA-1.2 LOCA OUTSIDE CONTAINMENT PAGE 3 of 7 9
1 ACTION / EXPECTED RESPONSE lRESPONSENOTOBTAINED STEP
@lg: Adverse CNMT values should be used whenever CNMT pressure is greater thz.n 4 psig or CNMT radiation is greater than 10+05 R/hr.
r 1 Verify Proper RHR Normal Manually close valves.
Cooling valve Alignment:
i lE neither MOV-700 nor MOV-701 can o MOV-700 and MOV-701. RHR suction be closed, THEN perform the valves from A hot leg - CLOSED following:
o MOV-720 and MOV-721, RHR
- a. Stop any running RHR pumps.
discharge valves to B cold leg -
CLOSED
- b. Close the following valves:
- MOV-704A and MOV-704B, RHR pump suction cross tie valves IF neither MOV-720 nor MOV-721 can be closed, THEN:
- a. Stop any running RHR pump.
- b. Close the following valves:
- HCV-624 and HCV-625, RHR Hx outlet valves
- HCV-626, RHR Hx bypass valve, if open 4
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REV: 3 ECA-1.2 LOCA OUTSIDE CONTAINMENT PAGE 4 of 7 j
ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED STEP l
2 Check CVCS Valve Alignment:
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- a. Manually close valves,
- a. Verify the following valves CLOSED If AOV-310 can NOT be closed,
- A0V-310 Excess letdown THEN ensure seal return isolation valve isolation valve, MOV-313, closed.
- A0V-296, Auxiliary spray valve
- A0V-392A, Charging line IE A0V-296 or A0V-392A can NOT isolation valve to loop B hot be closed, THEN perform the leg following:
- 1) Manually close HCV-142 charging line flow control valve.
- 2) Dispatch A0 with RWST area key to locally close V-384A.
- b. Verify the following CI valves -
- b. Manually close valves.
CLOSED IE either valve can NOT be
- MOV-313, seal return isolation closed, THEN dispatch A0 to valve locally isolate flovpath as
- A0V 371, letdown isolation necessary.
valve o Close V-315A, seal return filter inlet, to isolate MOV-313 (reach rod outside SWRF room).
o Close V-204A, NRHX inlet, to isolate A0V-371 (inside NRHX room).
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REV: 3 ECA-1.2 LOCA OUTSIDE CONTAINMENT PAGE 5 of 7 l
ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED STEP l
3 Check Safeguards Valves For Backflow:
- a. Close RHR pump discharge to Rx
- a. Perform the following:
l vessel deluge (MOV-852A) and check for RCS pressure increase
- 1) Open MOV-852A.
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- 2) Close RHR pump discharge to l
Rx vessel deluge (MOV-852B).
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- 3) Check for RCS pressure increase.
IF NOT, THEN open MOV-852B and go to Step 3c.
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- b. Co to Step 7.
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- c. Dispatch A0 with locked valve i
key to locally close breakers for SI pump discharge to cold leg isolation valves
e MOV-878D, MCC D position 8F l
- d. Close SI pump discharge to cold
- d. Perform the following:
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1eg B (MOV 878B) and check for pressure increase
- 1) Open MOV-878B.
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- 2) Close SI pump discharge to cold leg A (MOV-878D).
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- 3) Check for RCS pressure l
increase.
IF NOT, THEN open MOV 878D AND go to Step 4.
- e. Open breakers for MOV-878B and MOV-878D I
- f. Co to Step 7, l
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REV: 3 4
ECA-1.2 LOCA OUTSIDE CONTAINMENT l
PAGE 6 of 7
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ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED STEP 4 Check Charging Valves Fcr Backflow:
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- a. Check charging pumps - ALL PUMPS
- a. Go to Step 5.
0FF j
- b. Close charging line isolation
- b. Perform the following:
valve to loop B cold, A0V-294
- 1) Manually close HCV-142, charging line flow control l
valve.
- 2) Dispatch A0 with RWST area key to locally close V-384A.
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- c. Check RCS pressure - INCREASING
- c. Restore charging line as necessary and go to Step 5.
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Each RCP - GREATER THAN 6 GPM RCP thermal barrier, THEN perform I
ine following:
(
a.
Ensure at least one charging pump running.
- b. Increase charging pump speed and f
adjust charging line flow control valve (HCV-142) as necessary to establish required i
seal injection flow.
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- c. Go to Step 6.
If neither CCW pump is running.
THEN perform the following:
- MOV-759A l
- MOV-759B I
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- b. Go to Step 7.
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ECA-1.2 LOCA OUTSIDE CONTAINMENT i
PAGE 7 of 7 I
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ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED p
6 Check RCP Thermal Barrier:
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- a. Check the lollowing for
- a. Go to Step 7.
l indicati:ns of CCW System in leakage CCW Surge Tank Level, LI-618 o
- INCREASING i
-OR-l t
o R ON ALARM OR INCREASING l
- b. Close RCP A thermal barrier
return valve, A0V-754A MOV-759A.
- c. Check RCS pressure - INCREASING
- c. Restore RCP A thermal barrier cooling, if desired, and go to
- d. Go to Step 7.
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- e. Close RCP B thermal barrier
- f. Check RCS pressure - INCREASING
- f. Restore RCP B thermal barrier cooling if desired.
7 Check If Break Is Isolated:
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- a. RCS pressure - INCREASING
- a. do to ECA-1.1, LOSS OF EMERGENCY COOLANT RECIRCULATION, Step 1.
- b. Go to E-1, LOSS OF REACTOR OR SECONDARY COOLANT, Step 1 i
-END-l
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