ML17263A597
| ML17263A597 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 03/30/1994 |
| From: | ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| Shared Package | |
| ML17263A585 | List:
|
| References | |
| ECA-.2, ECA-0.2, NUDOCS 9404190153 | |
| Download: ML17263A597 (14) | |
Text
EOP I ECA-0.2 LOSS OF ALL AC POWER RECOVERY WITH SI REQUIRED REV:
8 PAGE 1 of 8 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE
~ ~~ /9 PLANT SUPERINTENDENT 4-7-0 EFFECTIVE DATE CATEGORY 1.0 REVIEWED BY:
9404i90153 940414 PDR ADOCK 05000244 P
EOP:
ECA-0.2 TITLE:
LOSS OF ALL AC POWER RECOVERY WITH SI REQUIRED REV:
8 PAGE 2 of 8 A.
PURPOSE This procedure provides actions to use engineered safeguards systems to recover plant conditions following restoration of AC emergency power.
B.
ENTRY CONDITIONS/SYMPTOMS l.
ENTRY CONDITIONS This procedure is entered from:
a.
ECA-O.O, LOSS OF ALL AC POWER, when AC emergency power is restored and SI is required.
b ~
ECA 0 ~l g LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED, if SI is required.
EOP:
ECA-0.2 LOSS OF ALL AC POWER RECOVERY WITH SI REQUIRED REV:
8
.PAGE 3 of 8 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED NOTE:
o CSFSTs should be monitored for information only.
FR procedures should not be implemented prior to completion of Step 7.
o Adverse CNMT values should be used whenever CNMT pressure is greater than 4 psig or CNMT radiation is greater than 10+
R/hr.
1 Check RCP CCW Isolation Status:
a.
CCW pumps BOTH PUMPS OFF b.
~ MOV-759A
~ MOV-759B a.
Go to Step 2.
- b. Manually close valves as necessary:
o RCP CCW thermal barrier outlet valves
~ AOV-754A
~ AOV-754B
~ MOV-749A
~ MOV-749B 2
Check RWST Level GREATER THAN 284 Go to ES-1.3, TRANSFER TO COLD LEG RECIRCULATION, Step 1.
EOP:
ECA-0.2 TITLE:
LOSS OF ALL AC POWER RECOVERY WITH SI REQUIRED REV 8
PAGE 4 of 8 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED NOTE:
SI actuation to establish safeguards valve alignment is not recommended.
3 Manually Align SI And RHR Pumps To Establish SI Injection:
a.
SI pump suction valves from RWST OPEN
~ MOV-825A
~ MOV-825B a.
Ensure at least one SI pump suction valve from RWST open.
~ MOV-825A
~ MOV-825B
- b. SI pump suction valves from BASTs -
CLOSED
~ MOV-826A
~ MOV-826B
~ MOV-826C
~ MOV-826D b.
Ensure at least one valve in each SI pump suction line from BASTs closed.
~ MOV-826A or MOV-826B
~ MOV-826C or MOV-826D
- c. Verify SI pump C discharge valves OPEN
- c. Manually open valves as necessary.
~ MOV-871A
~ MOV-871B d.
RHR pump discharge to Rx vessel deluge OPEN
~ MOV-852A
~ MOV-852B
- d. Ensure at least one deluge valve open.
~ MOV-852A
~ MOV-852B
EOP:
ECA-0.2 TITLE:
LOSS OF ALL AC POWER RECOVERY WITH SI REQUIRED REV 8
PAGE 5 of 8 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION THE LOADS PLACED ON THE ENERGIZED AC EMERGENCY BUS SHOULD NOT EXCEED THE CAPACITY OF THE POWER SOURCE.
4 Manually Load Following Safeguards Equipment On AC Emergency Bus:
- a. Start all SI pumps a.
Perform the following:
- 1) Start available SI pumps.
o IF SI pump A NOT available, THEN ensure MOV-871B closed.
o IF SI pump B NOT available, THEN ensure MOV-871A closed.
b.
Check RCS pressure:
o Pressure
- GREATER THAN 250 psig
[465 psig adverse CNMT]
o Pressure STABLE OR INCREASING
- b. Manually start both RHR pumps and go to Step 4d.
- c. Place RHR pump switches in AUTO
- d. Start all available CNMT RECIRC fans
0 C
EOP:
ECA-0.2 TITLE:
LOSS OF ALL AC POWER RECOVERY WITH SI REQUIRED REV 8
PAGE 6 of 8 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION o
IF CST LEVEL DECREASES TO LESS THAN 5 FEET, THEN ALTERNATE WATER SOURCES FOR AFW PUMPS WILL BE NECESSARY (REFER TO ER-AFW.1, ALTERNATE WATER SUPPLY TO AFW PUMPS).
o IF S/G NR LEVEL DECREASES TO LESS THAN 5%
[25% ADVERSE CNMT] AND FEED FLOW IS LESS THAN 200
- GPM, THEN THE MDAFW PUMPS SHOULD BE MANUALLYLOADED ON AC EMERGENCY BUS TO SUPPLY WATER TO THE S/G(S).
NOTE':
o If MDAFW pump operation is not required, pump switches should be maintained in PULL-STOP to prevent automatic start.
o TDAFW pump flow control valves fail open on loss of IA.
- 5 Monitor Intact S/G Levels:
- a. Narrow range level - GREATER THAN 5%
[25% adverse CNMT]
- a. Maintain total feed flow greater than 200 gpm until narrow range level greater than 5%
[25%
adverse CNMT] in at least one S/G.
IF feed flow less than 200 gpm, THEN perform the following:
- 1) Verify MDAFW pump discharge valve to intact S/G(s) open.
~ S/G A, MOV-4007
~ S/G B, MOV-4008
- b. Control feed flow to maintain narrow range level between 17%
[25% adverse CNMT] and 50%
- 2) Manually start MDAFW pumps as necessary (228 KW).
0 C
~t
EOP:
ECA-0.2 TlTLE:
LOSS OF ALL AC POWER RECOVERY WITH SI REQUIRED REV 8
PAGE 7 of 8 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 6 Place CNMT Spray Pumps In AUTO 7
Check RCP Seal Injection Needle Valves CLOSED
~ V-300A
~ V-300B Locally close valves before starting charging pump.
CAUTION o
RCP THERMAL BARRIER COOLING SHOULD BE ESTABLISHED SLOWLY TO MINIMIZE POTENTIAL INTRODUCTION OF STEAM INTO THE CCW SYSTEM AND THERMAL SHOCK TO RCP.
o RCP THERMAL BARRIER COOLING SHOULD NOT BE ESTABLISHED TO AN RCP WITH EXCESSIVE SEAL LEAKAGE.
o RCP SEAL INJECTION SHOULD BE ESTABLISHED SLOWLY TO MINIMIZE RCP THERMAL STRESSES AND POTENTIAL SEAL FAILURES.
o AS PART OF SUBSEQUENT RECOVERY ACTIONS, RCP(S)
SHOULD NOT BE STARTED PRIOR TO A STATUS EVALUATION UNLESS REQUIRED BY AN INADEQUATE CORE COOLING SITUATION.
NOTE:
FR procedures may nov be implemented as necessary.
o Annunciator A-7, RCP 1A CCW RETURN HIGH TEMP OR LOW FLOW EXTINGUISHED o
Annunciator A-15, RCP 1B CCW RETURN HIGH TEMP OR LOW FLOW EXTINGUISHED Establish normal CCW cooling to RCPs (Refer to Attachment SEAL COOLING).
EOP:
ECA-0.2 LOSS OF ALL AC POWER RECOVERY WITH SI REQUIRED REV:
8 PAGE 8 of 8 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 9
Go to E-l, LOSS OF REACTOR OR SECONDARY COOLANT, Step l
-END-
(
V
EOP:
ECA-0.2 LOSS OF ALL AC POWER RECOVERY WITH SI REQUIRED REV:
8 PAGE 1 of 1 ECA-0.2 APPENDIX LIST TITLE PAGES 1)
ATTACHMENT SEAL COOLING
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