ML17263A304

Rev 7 to AP-TURB.1, Turbine Trip W/O Rx Trip Required.

ML17263A304
Person / Time
Site:	Ginna
Issue date:	05/07/1993
From:	Marlow T ROCHESTER GAS & ELECTRIC CORP.
To:
Shared Package
ML17263A305	List: ML17263A304 ML17263A306 ML17309A519
References
AP-TURB.1, NUDOCS 9306040151
Download: ML17263A304 (19)

Text

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REV: 7 P-TURB.1 TURBINE TRIP WITHOUT RX TRIP REQUIRED PAGE 1 of 12 ROCHESTER GAS AND ELECTRIC ORPORATION GINNA STAT ON CONTROLLED COPY BER TECHNICAL REVIEW PORC VIEW DATE P T SUPERINTENDENT EFF TIVE DATE CAT G RY 1.0 REVIEWED BY:

9306040i5i 930524 PDR ADQCK 05000244 P PDR L

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REV 7 P-TURB.'1 TURBINE TRIP WITHOUT RX TRIP REQUIRED PAGE 2 of 12 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.1, LOSS OF A CIRC WATER PUMP, or,

b. AP-ELEC.l, LOSS OF 12A AND/OR 12B TRANSFORMER, or, c ~ I I AP FW 1 g PART AL OR COMPLETE LOSS OF MA N FEE DWATER g or,

d. AP-TURB.2, AUTOMATIC TURBINE RUNBACK, or,

e. AP-TURB.3, TURBINE VIBRATIONS, 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-l, 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,

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lit, or

d. Annunciator K-18, MAIN FEEDWATER PUMPS TRIPPED, lit, or

e. Annunciator K-26, GENERATOR LOCKOUT RELAY, lit, or Annunciator K-25, TURBINE OVERSPEED ALERT 1980 RPM, lit, or gi Annunciator F-21, 20" CIRC WTR PMPS, lit, or HI PRESS COND HG OR LOSS OF BOTH

h. Annunciator K-3, AMSAC ACTUATED, lit.

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REV 7 P-TURB;1 TURBINE TRIP WITHOUT RX TRIP REQUIRED PAGE 3 of 12 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.

1 Verify Turbine Stop Valves Manually trip turbine.

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

IF reactor power greater than 8%

with both MSIVs closed, THEN manually trip the reactor and go to E-O, REACTOR TRIP OR SAFETY INJECTION.

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REV: 7 P-'TURB; 1 TURBINE TRIP WITHOUT RX TRIP REQUIRED PAGE 4 of 12 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED CAUTION PRZR PRESSURE LOW PRESSURE TRIP IS RATE SENSITIVE, THEREFORE, MONITOR PRESSURE WHEN REDUCING RCS TEMPERATURE.

NOTE: Automatic rod control is desired, if available.

2 Check Reactor, Power:

a. NIS intermediate ranges - ABOVE a. Go to Step 3.

THE POINT OF ADDING HEAT (APPROXIMATELY 2.5xlO 6 AMPS)

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 insertion limits

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REV: 7 P-TURB;1 TURBINE TRIP WITHOUT RX TRIP REQUIRED PAGE 5 of 12 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 3 Monitor S/G Levels:

a. Levels - GREATER THAN 30% OR a. IF MFW regulating and bypass INCREASING valves NOT controlling in AUTO, THEN place controllers in MANUAL and restore narrow range level to program.

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

b. Levels - TRENDING TO PROGRAM b. IF S/G level above program and increasing uncontrolled, THEN place controller(s) in MANUAL and decrease flow as necessary.

IF flow can NOT be controlled, THEN perform the following:

l) Trip the reactor.

2) Stop the running MFW pump.

3) Close MFW pump discharge valves.

4) Go to E-O, REACTOR TRIP OR SAFETY INJECTION.

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REV: 7 P.~TURB; 1 TURBINE TRIP WITHOUT RX TRIP REQUIRED PAGE 6 of 12 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 4 Verify Proper Operation Of Steam Dump:

a. Verify annunciator G-15, STEAM a. Place steam dump mode selector DUMP ARMED - LIT 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%,

THEN ensure reactor trip and go to E-O, 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.1, ABNORMAL PRESSURIZER PRESSURE.

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REV: 7 P-TURB;1 TURBINE TRIP WITHOUT RX TRIP REQUIRED PAGE 7 of 12 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 letdown.

b. Level - TRENDING TO PROGRAM 'b. Increase charging flow as necessary to restore PRZR level to program.

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REV 7 P-TURB;1 TURBINE TRIP WITHOUT RX TRIP REQUIRED PAGE 8 of 12 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

d. Stop selected MFW pump 8 Establish Stable Plant Conditions:

a. Place rod control bank selector in MANUAL

b. NIS intermediate ranges - BELOW b. Return to Step 2.

THE POINT OF ADDING HEAT (APPROXIMATELY 2.5x10 AMPS)

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 PROGRAM 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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A

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REV 7 P-WRB:1 TURBINE TRIP WITHOUT RX TRIP REQUIRED PAGE 9 of 12 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED CAUTION IF ANY S/G LEVEL ABOVE PROGRAM, THEN AFW FLOW MAY BE THROTTLED IMMEDIATELYTO PREVENT S/G ISOLATION.

NOTE: Maintain Reactor power less than 2%. 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.

IF 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~976, B MFW pump

e. Stop any running MFW pump and place in PULL STOP

f. Check S/G level - TRENDING TO 39% f. Adjust MDAFW pump flow as necessary to restore S/G level.

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REV: 7 P~ TURB." 1 TURBINE TRIP WITHOUT RX TRIP REQUIRED PAGE 10 of 12 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 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.

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

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REV: 7 TURBINE TRIP WITHOUT RX TRIP REQUIRED PAGE 11 of 12 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 controller cern to close valves 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.

d. Dispatch AO to perform Attachment SD-1

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II REV 7 PERTURB;1 TURBINE TRIP WITHOUT RX TRIP REQUIRED PAGE 12 of 12 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 FROM HOT SHUTDOWN TO STEADY LOAD.

b. Refer to 0-2.1, NORMAL SHUTDOWN TO HOT SHUTDOWN

-END-

0 ~J 0

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REV: 7 TURBINE TRIP WITHOUT RX TRIP REQUIRED PAGE 1 of 1 AP-TURB.1 APPENDIX LIST TITLE PAGES

1) ATTACHMENT SD-1

2) ATTACHMENT SD-2