ML13311A577
| ML13311A577 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 05/20/1982 |
| From: | Southern California Edison Co |
| To: | |
| Shared Package | |
| ML13311A465 | List: |
| References | |
| SO1-1.2-1.22, NUDOCS 8205240494 | |
| Download: ML13311A577 (3) | |
Text
501-1.2-1.22 CONTAINMENT SPRAY RECIRCULATION REV 0 FOLLOWING LOSS OF SECONDARY COOLANT ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED EMERGENCY INSTRUCTION SO1-1.2-1.22 CONTATINMENT SPRAY RECIRCULATION FOLLOWING LOSS OF SECONDARY COOLANT I.
PURPOSE:
The purpose of this procedure is to provide containment spray if containment pressure remains high after the RWST is exhausted. This event would most likely occur with a loss of secondary coolant inside containment with the need to continually feed auxiliary feedwater.
8205240494 820520 PDR ADOCK 05000206 1 of 3 P
FOLLOWING LOSS OF SECONDARY COOLANT STE.
ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE:
Containment Spray Recirculation must be established before the RWST level reaches 7'.
1 Start SI Recirculation Pumps:
- a.
Start both SI recirculation pumps AND run for two minutes against Tose discharge valves.
2 Verify Salt hater Cocling:
- a. One saltwater cooling
- a. Place aux salt water pump breaker - CLOSED.
pump in service.
3 Verify Component Cooling To Rec rcuIation Heat Exchanger:
- a.
Two CCW pump breakers
- a. Manually start pumps CLOSED.
as necessary.
- b. Open recirculation
- b. Locally trip open heat exchanger CCW CV 737 A, AND B.
valves CV 737 A, AND B.
4 Reduce Containment Spray Flow:
- a. Override and close CV 517
- a. Locally trip closed AND CV 518.
CV 517 AND CV 518.
2 of 3
501-1.2-1.22 CONTANMENT SPRAY RECIRCULATION REV 0 FLOING LOSS OF SCDAYCOOLANT 0 SEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 5
Verify Spray Flow:
- a. Spray flow indicator
-LESS THAN 600 GPM.
- b. One refueling water
- b. Manually start a pump breaker -
CLOSED.
refueling water pump.
6 Establish Recirculation Flow:
- a. Open Si recirculation Dump disharge MCV 866 A AND 7
Isclate RwST:
- a. Close MOV 883.
- a. Manually close MOV 883.
8 SubseQuent Action:
- a. Continue with instruction in erfect.
-END H. E. MORGAN MANAGER, STATION OPERATIONS 3 of 3