ML17265A546

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0 to EOP AP-TURB.1, Turbine Trip Without Rx Trip Required.
ML17265A546
Person / Time
Site: Ginna Constellation icon.png
Issue date: 02/12/1999
From: Sidelinger R
ROCHESTER GAS & ELECTRIC CORP.
To:
Shared Package
ML17265A547 List:
References
AP-TURB.1, NUDOCS 9902250296
Download: ML17265A546 (16)


Text

EOP: TITLE:

REV: 10 P-TURB.,1 TURBINE TRIP WITHOUT RX TRIP REQUIRED PAGE 1 of 11 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER RESPONSIB MANAGER EFFECTIVE DATE CATEGORY 1.0 REVIEWED BY:

9902250296 990212 PDR ADDCK 05000244 PDR ..

~

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REV 10 P-TURB.,1 TURBINE TRIP WITHOUT RX TRIP REQUIRED PAGE 2 of 11 A. PURPOSE This procedure provides the necessary instructions to control the plant following a turbine trip without a reactor trip required.

B. ENTRY CONDITIONS/SYMPTOMS

1. ENTRY CONDITIONS This procedure is entered from:
a. AP-CW.l, LOSS OF A CIRC WATER PUMP, or,
b. AP-ELEC.1, LOSS OF 12A AND/OR 12B BUSSES, or,
c. AP-FW.1, PARTIAL OR COMPLETE LOSS OF MAIN FEEDWATER, or, d I AP TURB 2 g TURBINE LOAD RE JECT ON g or g
e. AP-TURB.3, TURBINE VIBRATION, or,
f. AP-TURB.4, LOSS OF CONDENSER VACUUM, when power is less than P-9 and the turbine trips without a Rx trip.
2. SYMPTOMS The symptoms of TURBINE TRIP WITHOUT RX TRIP REQUIRED are:
a. Annunciator K-1, THRUST BEARING FAILURE, lit, or
b. Annunciator K-9, TURBINE BEARING OIL LO PRESS TRIP 6 psi, lit, or
c. Annunciator K-.17, TURBINE LOW VACUUM TRIP 20" HG, lit, or
d. Annunciator K-18, MAIN FEEDWATER PUMPS TRIPPED, lit, or
e. Annunciator K-26, GENERATOR LOCKOUT RELAY, lit, or
f. Annunciator K-25, TURBINE OVERSPEED ALERT 1980 RPM, lit, or
g. Annunciator F-21, COND HI PRESS 20" HG OR LOSS OF BOTH CIRC WTR PMPS, lit, or
h. Annunciator K-3, AMSAC ACTUATED, lit.

Annunciator K-10, TURBINE HIGH VIBRATION TRIP.

EOP: .. TITLE:

REV 10 P-TURB,1 'URBINE TRIP WITHOUT RX TRIP REQUIRED PAGE 3.of 11 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED

~ 1 ~ ~ ~ I ~ ~ ~ 0 ~ 0 ~ 0 ~ ~ ~ ~ 4 0 ~ I 4 ~ 4 ~ 1 0 ~ 1 ~ ~ ~ 4 ~ ~ 0 ~

CAUTION IF. AT ANY 'TIME DURING THIS PROCEDURE, A REACTOR TRIP OR SI OCCURS, E-O, REACTOR TRIP OR SAFETY INJECTION. SHALL BE PERFORMED.

1 Verify Turbine Stop Valves Manually trip turbine.

CLOSED IF turbine stop valves can NOT 'be closed. THEN close both MSIVs.

~F reactor power greater than 8'/o with both MSIVs closed, THEN manually trip the reactor and go to E-0. REACTOR TRIP OR SAFETY INJECTION.

NOTE: Automatic rod control is desired, if available.

2 Check Reactor Power:

a. NIS power ranges - ABOVE 1'/. a. Go to Step 3.
b. Verify control rods driving in b. Perform the following:

to reduce reactor power in AUTO l) Ensure ROD CONTROL BANK SELECTOR switch to MANUAL

2) Insert rods as necessary to reduce reactor power.
c. Borate as necessary to maintain control rods above rod inserti'on limits

EOP: TITLE:

REV 10 P-TURB.1 . TURBINE TRIP WITHOUT RX TRIP REQUIRED PAGE 4 of 11 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 3 Monitor S/G Levels TRENDING Perform the following:

TO 52%

o IF S/G level less than 52/. and MFW regulating and bypass valves NOT controlling in AUTO, THEN place controllers in MANUAL and restore narrow range level to 5 2 /0 ~

IF S/G level can NOT be restored. THEN trip the reactor and go to E-O, REACTOR TRIP OR SAFETY INJECTION.

-OR-o IF S/G level is greater than 52/o and increasing uncontrolled.

THEN place controllers in MANUAL and decrease flow as necessary.

jF flow can NOT be controlled.

THEN perform the following:

a. Trip the reactor.
b. Stop the running MFW pump(s).

c'. Close both MFW pump discharge valves.

d. Go to E-0. REACTOR TRIP OR SAFETY INJECTIONS

EOP: TITLE:

REV: 10 P-TURB., 1 TURBINE TRIP WITHOUT RX TRIP REQUIRED PAGE 5 of 11 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 4 Verify Proper Operation Of Steam Dump:

a. Verif'y annunciator G-15. STEAM a. Place steam dump mode selector DUMP ARMED -'IT switch to MANUAL.
b. Condenser steam dump operating b. IF steam dump NOT available.

in AUTO THEN perform the following:

1) Adjust S/G ARV setpoints to 1005 psig and verify proper operation.
2) IF power is greater than 8'/i, THEN ensure reactor trip and go to E-0. REACTOR TRIP OR SAFETY INJECTION.
c. Tavg - TRENDING TO PROGRAM c. IF Tavg can NOT be controlled, THEN manually trip the reactor and go to E-O, REACTOR TRIP OR SAFETY INJECTION.

5 Check PRZR Pressure IF PRZR pressure can NOT be TRENDING TO 2235 PSIG controlled. THEN refer to AP-PRZR.l, ABNORMAL PRESSURIZER.

PRESSURE.

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REV 10 P-TURB,.1 ~

TURBINE TRIP WITHOUT RX TRIP REQUIRED PAGE 6 of 11 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 6 Check PRZR Level:

a. Level - GREATER THAN 13% a. Perform the following:
1) Place loop B cold leg isolation valve to REGEN Hx (AOV-427) switch to CLOSE.
2) Place letdown orifice valve switches to CLOSE (AOV-200A ~

AOV-200B. and AOV-202).

3) Verify excess letdown isolation valve (AOV-310) closed.
4) Ensure PRZR heaters off.
5) Control charging to restore PRZR level greater than 13%.
6) WHEN PRZR level greater than 13%, THEN restore 1'etdown.
b. Level - TRENDING TO PROGRAH b. Increase charging flow as necessary to restore PRZR level to program.

EOP: TITLE:

REV 10 P-TURB,l ~

TURBINE TRIP WITHOUT RX TRIP REQUIRED PAGE 7 of 11 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 7 Check MFW System:

a. Verify MFW regulating and bypass a. Place MFW regulating and bypass valves - OPERATING IN AUTO valve controllers in MANUAL and restore S/G level.
b. MFW pumps - BOTH RUNNING b. Perform the following:
1) Verify one MFW pump running.

IF NOT, THEN verify both MDAFW pumps running.

2) Go to Step 8.
c. Close one MFW pump discharge valve de Stop selected MFW pump 8 Establish Stable Plant Conditions:
a. Place rod control bank selector in MANUAL
b. NIS power ranges - LESS THAN 2'/. b. Return to Step 2.
c. PRZR pressure - BETWEEN c. Control PRZR heaters and spray 2220 PSIG AND 2260 PSIG as necessary.
d. PRZR level - TRENDING TO PROGRAM d. Control charging as necessary.
e. S/G levels - TRENDING TO 52'/ e. Control S/G feed flow as necessary.
f. RCS Tavg - GREATER THAN 540'F f. Control dumping steam as necessary. IF cooldown continues. THEN close both MSIVs.

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REV: 10 P-TURB.,1 TURBINE TRIP WITHOUT RX TRIP REQUIRED PAGE 8 of 11 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED

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CAUTION IF ANY S/G LEVEL ABOVE 52/e, THEN AFW FLOW MAY BE THROTTLED IMMEDIATELY TO PREVENT S/G ISOLATION.

NOTE: Maintain Reactor power less than 2'/o. This is within the capacity of MDAFW pumps.

9 Check S/G Feed Flow Status:

a. Manually start both MDAFW pumps
b. Verify AFW flow - ESTABLISHED b. Perform the following:
1) Establish MFW flow using MFW regulating valve bypass valves.

~F MFW NOT available, THEN manually start TDAFW pump and establish flow as necessary.

2) Go to Step 10.
c. Verify MFW flow control valves c. Place A and B MFW regulating and CLOSED bypass valve controllers in manual at 0'/. demand.

~ MFW regulating valves

. ~ MFW bypass valves

d. Close MFW pump discharge valves

~ MOV-3977. A MFW pump

~ MOV-3976, B MFW pump

e. Stop'ny running MFW pump and place in PULL STOP
f. Check S/G level - TRENDING TO 52/. f. Adjust MDAFW pump flow as necessary to restore S/G level.

EOP: TITLE REV 10 P-TURB,1 " TURBINE TRIP WITHOUT RX TRIP REQUIRED PAGE 9 .of 11 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED

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CAUTION WHEN FEEDING BOTH S/G(S) USING ONE MDAFW PUMP. THEN THE SUM OF THE FLOWS TO BOTH S/G(S) MUST BE LESS THAN 230 GPM.

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10 Establish Normal AFW Pump Shutdown Alignment:

a. Place AFW bypass switches to DEF
b. Verify the 'following: b. Continue with Step ll. WHEN conditions met, THEN do Steps o Both S/G levels - STABLE OR 10c through f.

INCREASING o Total AFW flow - LESS THAN 200 GPM

c. Close MDAFW pump discharge valves

~ MOV-4007

~ MOV-4008

d. Stop all but one MDAFW pump
e. Open AFW discharge crossover valves

~ MOV-4000A

~ MOV-4000B

f. Open AFW bypass valves as necessary to control S/G levels

~ AOV-4480

~ AOV-4481

EOP: TITLE:

REV 10 P-TURB.1 'TURBINE TRIP WITHOUT RX TRIP REQUIRED PAGE 10 of 11 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 11 Establish Normal Shutdown Alignment:

a. Check condenser - AVAILABLE a. Dispatch AO to perform Attachment SD-2.
b. Perform the following as necessary:

o Open generator disconnects

~ 1G13A71

~ 9X13A73 o Place voltage regulator to OFF o Open turbine drain valves o Rotate reheater steam supply cam to close valves 'ontroller o Place reheater dump valve switches to HAND o Stop all but. one condensate pump

c. Verify Bus llA and Bus llB c. IF either bus NOT energized.

energized - BOTH BUSSES GREATER THEN refer to 0-6.9.2.

THAN 4 KV ESTABLISHING AND/OR TRANSFERRING OFFSITE POWER TO BUS 12A/

BUS 12B. It

d. Dispatch AO to perform Attachment SD-1

EOP:

REV: 10 P-TURB.1 TURBINE TRIP WITHOUT RX TRIP REQUIRED PAGE 11 of 11 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: Refer to 0-9.3, NRC IMMEDIATE NOTIFICATION. for reporting requirements.

12 Notify Higher Supervision 13 Establish Desired Plant Conditions:

a. Reactor shutdown - DESIRED a. IF turbine is to be restored to service, THEN maintain reactor critical and refer to 0-1.2, PLANT STARTUP FROM HOT SHUTDOWN TO FULL LOAD.
b. Refer to 0-2.1, NORMAL SHUTDOWN TO HOT SHUTDOWN

-END-

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REV: 10

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TURBINE TRIP WITHOUT RX TRIP REQUIRED PAGE 1 of 1 AP-TURB.1 APPENDIX LIST TITLE

1) ATTACHMENT SD-1 (ATT-17. 0)
2) ATTACHMENT SD-2 (ATT-17. 1)