ML17261A982
| ML17261A982 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 02/23/1990 |
| From: | Widay J ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| Shared Package | |
| ML17261A978 | List: |
| References | |
| AP-PRZR.1, NUDOCS 9003080332 | |
| Download: ML17261A982 (18) | |
Text
EOP:
-PRZR.1 ABNORMAL PRESSURIZER PRESSURE REV:
4 PAGE 1 of ROCHESTER GAS AND ELECTRIC CORPORA ON GINNA STATION CONTROLLED COPY NUMBER TECHNICAL VIEW POR REVI DATE 0
SUPERINTE DE T o79 0
EFFECTXVE DATE QA~ NON-QA CATEGORY 1.0 VIEWED BY:
6INNASTATION START:
D TE TIM C
MPLETED:
DATE TIME:
9003080332 900227 PDR ADOCK 05000244 F
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AP-PRZR.1
. TITLE:
ABNORMAL PRESSURIZER PRESSURE REV 4
PAGE 2 of 9 A.
PURPOSE This procedure provides the actions necessary to mitigate the consecpxences of abnormal PRZR pressure.
B.
ENTRY CONDITIONS/SYMPTOMS 1.
SYMPTOMS The symptoms of ABNORMAL PRZR PRESSURE are; a.
Annunciator F-19, PRZR PORV OUTLET HI TEMP 145'F, or b.
Annunciator F-18, PRZR SAFETY VLV OUTLET HI TEMP 145'F, or c.
Annunciator or d.
Annunciator AA 1 3 g PRESSURI ZER SAFETY VALVE POS ITION~
F-l, PRT LIQUID HI TEMP 220'F, or e.
Annunciator F-9, PRT HI PRESS 5 PSI, or f.
Annunciator F-17, PRT LEVEL 60.84 84.54, or g.
Annunciator F-2, PRESSURIZER HI PRESS 2310 PSI alarm, or h.
Annunciator F-10, PRESSURIZER LO PRESS 2185 PSI alarm, or i.
Annunciator F-6, PRESSURIZER HEATER BREAKER TRIP alarm.
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AP-PRZR.1 TITLE:
ABNORMAL PRESSURIZER PRESSURE REV:
4 PAGE 3 of 9 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION IF AT ANY TIME DURING THIS PROCEDURE, A REACTOR TRIP OR SI OCCURS, E-O, REACTOR TRIP OR SAFETY INJECTION, SHALL BE PERFORMED.
NOTE:
Actual PRZR pressure should be verified by more than 1 indicator.
1 Verify PRZR Pressure:
o PRZR pressure
- GREATER THAN 1873 PSIG o
PRZR pressure
- LESS THAN 2377 PSIG IF PRZR pressure is less than 1873 psig OR greater than 2377 psig, THEN ensure reactor trip AND go to E-O, REACTOR TRIP or SAFETY INJECTION.
2 Check Reactor Power STABLE IF a power transient is occurring, AND PRZR pressure is NOT changing as expected, THEN go to Step 3.
IF a power transient is occurring, AND PRZR pressure is changing as
- expected, THEN determine the cause for the power transient, and exit this procedure.
3 Check PRZR Pressure:
a.
PRZR pressure
- GREATER THAN 2185 PSIG b.
PRZR pressure
- LESS THAN 2260 PSIG c.
Go to Step 15
- a. IF PRZR pressure less than 2185
- psig, THEN go to Step 4.
- b. IF PRZR pressure greater than 2260 psig, THEN go to Step 11.
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AP-PRZR.1 TITLE:
ABNORMAL PRESSURIZER PRESSURE j
REV 4
PAGE 4 of 9 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 4
Check PRZR Heater Status:
a.
PRZR heater control group -
ON
- a. Restore PRZR proportional heaters:
b.
PRZR heater backup group -
ON
- 1) Place PRZR heater control group switch to TRIP to
- reset, then place switch to close and let return to AUTO.
- 2) Verify increase of approximately 400 KW on bus 14 with PRZR pressure less than 2220 psig.
- b. Restore PRZR backup heaters:
- 1) Place PRZR heater backup group switch to ON.
- 2) Verify increase of approximately 400 KW on bus 16.
5 Check PRZR Spray Valves Closed:
o PCV-431A controller output-ZERO o
PCV-431B controller output-ZERO IF RCS pressure.is decreasing, THEN place malfunctioning spray valve in MANUAL and close valve.
IF spray valve can NOT be closed, THEN perform the following:
- a. Trip the reactor.
- b. Trip the associated RCP.
c.
Go to E-O, REACTOR TRIP or SAFETY INJECTION.
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AP-PRZR.l ABNORMAL PRESSURIZER PRESSURE REV:
4 PAGE 5 of 9 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 6
Check PRZR PORVs:
- a. Both PRZR PORVs - CLOSED
- b. Annunciator F-19 PRZR PORV outlet hi temp 145'F alarm-EXTINGUISHED c.
Go to Step 8
- a. IF either PRZR PORV indicates
- open, THEN close the
- b. IF PRZR PORV leakage is indicated, THEN:
- 1) Close PRZR PORV block valves MOV-515, MOV-516 one at a
- time, AND check if relief line temperature decreases.
2)
@HEN leaking PRZR PORV is identified, THEN go,to Step 7.
7 Check If Leaking PRZR PORV Can Be Reseated:
a.
Check the associated PRZR PORV block valve - CLOSED
- b. Cycle the leaking PRZR PORV-OPEN THEN CLOSED
- c. Reopen - ASSOCIATED PRZR PORV BLOCK VALVE
- a. Close the associated PRZR PORV block valve.
- d. Verify leakage
- HAS STOPPED
- d. IF leakage continues, THEN:
- 1) Close associated PRZR PORV block valve.
e.
Go to Step 16
- 2) Refer to Tech Spec section 3.1.1.4 to determine operating limitations.
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AP-PRZR. 1 ABNORMAL PRESSURIZER PRESSURE REV 4
PAGE 6 of 9 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION o
IP PRZR PRBSSURE IS TO BE REDUCBD VHILE AT POWERS IT SHOULD BE DONE SLOWLY SINCE THE PRZR LOV PRESSURE TRIP IS RATE SENSITIVE.
o VHEN REDUCING PRZR PRESSURE, OTaT SETPOINT VILL DECREASB.
8 Check PRZR Safety Valves:
o Position indicator - LESS THAN 0.1 INCH o
Annunciator P-18, PRZR SAFETY VLV OUTLET HI TEMP 145'F-BXTINGUISHED o
Annunciator AA-13, PRESSURIZER SAFETY VALVE POSITION-EXTINGUISHED IP safety valve leakage is indicated, THEN attempt to reseat the safety valve by:
a.
SLOWLY reduoe PRSR pressure
'remain above 2000 psig).
- b. IP symptoms indicate leakage has
- stopped, THEN restore pressure to normal.
- c. IP leakage recurs or can NOT be
- stopped, THEN:
- 1) Verify. leakge within limits of Tech Spec section 3.1.5.2.
2)
Go to Step 18.
NOTE:
Vith PCV-431K in manual, PORV-431C is inoperable.
Check Tech Spec Section 3.1.1.4 to determine operating limitations.
9 Check PRZR Pressure Controller PC-431K:
o Controller output - LESS THAN 50X IP PRZR pressure controller NOT less than 50XP THEN place PC-431K in manual and decrease output to energize PRZR heaters.
K II
~ 4 i4t 5 ~
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AP-PRZR.l TITLE:
ABNORMAL PRESSURIZER PRESSURE REV 4
PAGE 7 of 9 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 10 Check PRZR Pressure:
- a. Pressure
- TRENDING TO 2235 PSIG b.
Go to Step 15 IF PRZR pressure continues to decrease uncontrollably, THEN trip the reactor and go to E-O, REACTOR TRIP or SAFETY INJECTION.
11 Check PRZR Backup Heaters-OFF Place backup heater svitch to OFF.
NOTE:
Vith PCV-431K in manual, PORV-431C is inoperable.
Check Tech Spec Section 3.1.1.4 to determine operating limitations.
12 Check PRZR Pressure Controller PC-431K:
o Controller output - GREATER THAN 60K IF PRZR pressure controller NOT greater than 60X, THEN place PC-431K in manual and increase output to open PRZR spray valves.
13 Check PRZR Spray Valves:
o PCV-431A controller output-GREATER THAN ZERO o
PCV-431B controller output-GREATER THAN ZERO IF PRZR spray valve controller outputs are NOT greater than zero, THEN place PRZR spray valve controllers in manual and open as required to control pressure.
14 Check PRZR Pressure:
o Pressure
- TRENDING TO 2235 PSIG IF PRZR pressure continues to increase uncontrollably, THEN trip the reactor and go to E-O, REACTOR TRIP or SAFETY INJECTION.
AP-PRZR.1 TITLE:
ABNORMAL PRESSURIZER PRESSURE REV:
4 PAGE 8 of 9 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED NOTE: If PT-429 fails low, PCV-430 will not open on PRZR high pressure AND if PT-431 fails lov, PCV-431C will not open on PRZR high pressure;
- also, vhen PC-431K is in manual, PC-431C vill not lift on PRZR high pressure.
15 Check For Failed PRZR Pressure Channel:
- a. All 4 narrow range PRZR pressure channels
- INDICATE APPROXIMATELY THE SAME PRESSURE
- a. IF one narrov 'range pressure channel deviates significantly from the others, THEN:
- 1) Ensure PC-431K in MANUAL.
- 2) Place svitch P-429A in the-PLP rack to an operable pressure channel.
- 3) Restore PC-431K to AUTO.
- 4) Verify proper operation of PC-431K.
- 5) For bistable defeat, refer to ER-INST.l, REACTOR PROTECTION BISTABLE DEFEAT AFTER INSTRUMENTATION LOOP FAILURE.
NOTE:
Refer to 0-9.3, IMMEDIATE NOTIFICATION, for reporting requirements.
16 Complete NOTIFICATION TO I&C AND HIGHER SUPERVISION
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AP-PRZR. 1 ABNORMAL PRESSURIZER PRESSURE REV:
4 PAGE 9 of 9 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 17 Check PRT Conditions:
o PRT level - APPROXIMATELY 72X o
PRT pressure
- APPROXIMATELY 1.5 PSIG o
PRT temperature
- LESS THAN 200'F IF PRT level is high, THEN drain PRT using PRZR relief tk drn vlv AOV-526.
IF PRT temperature or pressure is high due to inleakage, THEN:
o Open RMV to CNMT isol vlv (AOV-508).
o Feed and bleed the PRT using fillvalve RMW to PRZR relief tank AOV-548 AND drain valve PRZR relief tk drn vlv AOV-526.
18 Verify CONDITIONS PERMIT CONTINUED POWER OPERATION IF shutdovn is required, THEN refer to 0-2.1, NORMAL SHUTDOWN TO HOT SHUTDOW.
-END-