ML20198C052
| ML20198C052 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 12/14/1998 |
| From: | ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| Shared Package | |
| ML17265A479 | List: |
| References | |
| FR-S.1, NUDOCS 9812210288 | |
| Download: ML20198C052 (13) | |
Text
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FR-S.1 RESPONSE TO REACTOR RESTART /ATWS PAGE 1 of 12 i
ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER
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%G RESPONSIBLE @ AGER 1
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EFFECTIVE DATE l
CATEGORY 1.O REVIEWED BY:
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PDR ADOCK 05000244 i ' Cicf.
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PURPOSE - This procedure provides actions to add negative reactivity to a core which is observed to be critical when expected to be shut down.
B.
ENTRY CONDITIONS / SYMPTOMS 1.
ENTRY CONDITIONS - This procedure is entered from:
a.
E-0, REACTOR TRIP OR SAFETY INJECTION, when reactor trip is not verified and manual trip is not effective.
b.
F-0.1, SUBCRITICALITY Critical Safety Function Status Tree on either a RED or ORANGE condition.
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l ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED I
STEP i
1 EQTE:
o Steps 1 through 3 are IMMEDIATE ACTION steps, Adverse CNMT values should be used whenever CNMT pressure is o
greater than 4 psig or CNMT radiation is greater than 10+05 R/hr.
l Verify Reactor Trip:
Manually trip reactor, o At least one train of reactor H reactor trip breakers EQI open, trip breakers - OPEN THEN manually insert control rods.
o Neutron flux - DECREASING o MRPI indicates - ALL CONTROL AND SHUTDOWN RODS ON BOTTOM O2 Verify Turbine Stop Valves -
Manually trip turbine.
CLOSED E turbine trip can HQI be verified. THEN close both MSIVs.
Check-AFW Pumps Running:
- a. MDAFW pumps - RUNNING
- a. Manually start MDAFW pumps.
- b. TDAFW pump - RUNNING IF
- b. Manually open steam supply NECESSARY valves.
- MOV-3505A MOV-3504A e
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REV: 13 FR-S.1 RESPONSE TO REACTOR RESTART /ATWS PAGE 4 of 12 ACTION / EXPECTED RESP 3NSE RESPONSE NOT OBTAINED STEP CAUTION ACTIONS TAKEN TO INITIATE RCS B0 RATION SHALL NOT BE REVERSED WHEN PERFORMING STEPS 1 THROUGH 12 0F E-0 REACTOR TRIP OR SAFETY INJECTION.
NOTE:
If offsite power is lost coincident with SI, then MCC C and MCC D lockout relays must be reset to restore BA and RW pumps.
4 Initiate Emergency Boration Of RCS:
- a. Check SI status:
- a. Perform the following:
o All SI annunciators -
- 1) Complete steps 1 through 12 EXTINGUISHED of E-0, REACTOR TRIP OR SAFETY INJECTION, while o All SI pumps - 0FF IN AUTO continuing with this procedure
- 2) H SI flow indicated. THEN go to Step 5.
IF NOT, THEN go to Step 4b.
- b. Verify at least one charging
- b. Perform the following pump RUNNING
- 1) Reset SI if necessary.
- 2) Start one charging pump.
- c. Align boration path:
- c. Initiate normal boration at maximum rate using the boric
- 1) Start two BA transfer pumps acid flow control valve.
FCV-110A. E flow can HQI be
- 2) Open MOV-350 establist :.. IREN refer to ER-CVCS.1, REACTOR MAKEUP
- 3) Verify BA flow CONTROL MALFUNCTION.
- d. Verify charging flow path:
- d. Manually align valves and verify flow.
o Charging valve to loop B cold leg (A0V 294) - OPEN o Charging flow control valve r
(HCV-142) - DEMAND AT 0%
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ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED STEP i
l 5 Check PR7,R PORV Status:
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- a. RCS pressure - LESS THAN
- a. Verify PRZR PORVs and block l
2335 PSIG valves open.
IF NOT, THEN open l
PRZR PORVs and block valves as necessary until PRZR pressure l
1ess than 2335 psig'.
- b. Check PORV position
- b. H PRZR pressure less than l
2335 psig HEN manually close o PORVs - CLOSED PORVs.
o Annunciator F-19, PRZR PORV H any PORV can F_QI be closed.
OUTLET HI TEMP - EXTINGUISHED HEN manually close its block valve. E block valve can NOT be closed. THEN dispatch A0 to locally check breaker.
. MOV-515, MCC D position 6C MOV-516 MCC C position 6C e
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6 Verify CNMT Ventilation Isolation
- a. CVI annunciator - LIT
- a. Momentarily deenergize CNMT particulate monitor. R-11, to
. Annunciator A-25, CNMT actuate CVI.
VENTILATION ISOLATION
- b. Verify CVI valve status lights -
- b. Manually close CVI valves as BRIGHT required H valves can HQI be verified closed by MCB indication, THEN dispatch A0 to locally close valves (Refer to Attachment CI/CVI FOR ALTERNATE ISOLATION VALVES).
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ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED STEP 7 Check If The Following Trips Have Occurred:
- a. Reactor trip
- a. Dispatch A0 to locally trip reactor:
o Trip MG set breakers at bus 13 and bus 15.
-OR-Open reactor trip breakers o
locally.
- b. Turbine trip
- b. Dispatch A0 to locally trip turbine using manual trip lever on west end of HP turbine.
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ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED STEP l
CAUTION 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).
8~ Check S/G Level:
I
- a. Narrow range level in at least
- a. Perform the following:
one S/G - GREATER THAN 5% [25%
adverse CNMT]
- 1) Verify total feed flow greater than 400 gpm.
l JJ NOT IBEN manually start pumps and align valves as necessary.
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- 2) Maintain total feed flow V
greater than 400 gpm until narrow range level greater than 5% [25% adverse CNMT] in at least one S/G.
- b. Control feed flow to maintain narrow range level between 17%
[25% adverse CNMT} and 50%
l 9 Verify Dilution Paths -
Manually isolate dilution paths.
ISOLATED o Place RMW mode switch to BORATE l
o Verify RMW to blender (HCV Ill)
- CLOSED l
j o Verify RMW pumps - 0FF 5
5 4
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ACTION /EXPECTEDRESPONSEf STEP RESPONSE NOT OBTAINED 1
l 10 Stabilize RCS Temperature:
- a. Control steam dump as necessary
- b. Verify the following:
b IE RCS cooldown can EI be controlled. THEN close both o Core exit T/Cs - STABLE OR MSIVs and go to Step 11.
INCREASING o Pressure'in both S/Gs -
STABLE OR INCREASING o Pressure in-both S/Gs -
GREATER THAN 110 PSIG
- c. Go to Step 15 11 Verify MFW Isolation:
- a. MFW pumps - TRIPPED
- b. MFW flow control valves CLOSED
- b. Place A and B S/G MFW regulating valve and bypass valve
- MFW regulating valves controllers to MANUAL at 0%
- MFW bypass valves
- demand, 12 Identify Faulted S/G:
Go to Step 15.
l o Any S/G Pressure DECREASING IN AN UNCONTROLLED MANNER
-OR-Any S/G Pressure - LESS TilAN o
110 PSIG OO 4
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!u ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED STEP CAUTION
~ o AT LEAST ONE S/G SHALL BE MAINTAINED AVAILABLE FOR RCS C00LDOWN.
o IF BOTH S/GS ARE FAULTED, AT LEAST 50 GPM FEED FLOW SHOULD BE MAINTAINED TO EACH S/G.
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13 Isolate Feed Flow To Faulted Manually close valves.
S/G:
J.E valves can N_QI be closed, THEN Close faulted S/G MDAFW pump dispatch A0 to locally isolate o
discharge valve flowpaths as necessary.
- S/G A, MOV-4007
- S/G B, MOV-4008 Pull stop faulted S/G MDAFW pump o
d Close faulted S/G TDAFW flow o
control valve i
S/G A A0V-4297 e
S/G B, A0V-4298 o Verify faulted S/G MFW regulating valve and bypass valve - CLOSED l
- S/G A HCV-466 and HCV 480
. S/G B, HCV-476 and HCV-481 o Verify MDAFW pump crosstie valves - BOTH CLOSED MOV-4000A e
MOV-4000B e
o Close faulted S/G SAFW pump discharge valve l
S/G A. MOV-9701A e
l S/G B. MOV-9701B t.
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-RESPONSE TO REACTOR RESTART /ATWS PAGE 10 of 12 ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED STEP CAUTTQH IF THE TDAFW PUMP IS THE ONLY AVAILABLE SOURCE OF FEED FLOW, THEN STEAM SUPPLY TO THE TDAFW PUMP MUST BE MAINTAINED FROM ONE S/G.
l 14 Isolate Steam Flow From Manually close valves.
Faulted S/G:
J.E valves can EQI be closed THEN i
o Verify faulted S/G ARV - CLOSED dispatch A0 to locally isolate i
flowpaths as necessary.
. S/G A. A0V-3411
. S/G B, A0V-3410 Close faulted S/G TDAFW pump o
steam supply valve and place in PULL STOP S/G A. MOV-3505A l
e
. S/G B, MOV-3504A Verify faulted S/G blowdown and o
sample valves CLOSED
. S/G B A0V 5737 and A0V 5736 o Dispatch A0 to complete faulted S/G isolation (Refer to Attachment FAULTED S/G) l.
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ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED STEP 15 Check Core Exit T/Cs - LESS E core exit temperatures graater THAN 1200*F than 1200*F and increasing. THEN go to SACRG-1, SEVERE ACCIDENT CONTROL ROOM GUIDELINE INITIAL RESPONSE.
step 1.
NOTE: Adverse CNMT conditions or loss of forced air cooling may result in failure of NIS detectors.
16 Verify Reactor Subcritical:
Perform the following:
o Power range channels - LESS THAN
- a. Stabilize RCS temperature.
5%
- b. Continue to inject boric acid.
o Intermediate range channels -
STABLE OR DECREASING
o Intermediate range channels startup rate - NEGATIVE
- d. Verify boron concentration f\\
greater than Figure SDM.
o Core exit T/Cs STABLE H adequate shutdown margin verified. IHFE go to Step 17.
IF NOT. THEN perform the following:
- a. Allow RCS to heat up,
- b. Perform actions of other FR procedures in effect which do E0T cooldown or otherwise add Q
positive reactivity to the core.
- c. Return to Step 4.
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ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED STEP l.
l CAUTION l
B0 RATION SHOULD CONTINUE TO OBTAIN ADEQUATE SHUTDOWN MARGIN DURING SUBSEQUENT ACTIONS.
17 Return to Procedure And Step In Effect
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FR-S.1-RESPONSE TO REACTOR RESTART /ATWS PAGE 1 of 1 l
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r FR-S.1 APPENDIX LIST TITLE ~
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FIGURE SDM (FIc-2.0) 2)
ATTACHMENT FAULTED S/G (Arr-10.o) l 3)
ATTACHMENT CI/CVI (ATf-3.0) 1 1
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