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 A ROCHESTER GAS & ELECTRIC CORP.
To:
Shared Package
ML17263A305	List: ML17263A304 ML17263A306 ML17309A519
References
AP-TURB.1, NUDOCS 9306040151
Download: ML17263A304 (19)

Text

EOP: P-TURB.1 TITLE: TURBINE TRIP WITHOUT RX TRIP REQUIRED REV: 7 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

\~EOP: P-TURB.'1 TITLE: TURBINE TRIP WITHOUT RX TRIP REQUIRED REV 7 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~AP FW 1 g PART I AL OR COMPLETE LOSS OF MA I 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~b.c~d.e.gi Annunciator K-l, THRUST BEARING FAILURE, lit, or Annunciator K-9, TURBINE BEARING OIL LO PRESS TRIP 6 psi, lit, or Annunciator K-17, TURBINE LOW VACUUM TRIP 20" HG, lit, or Annunciator K-18, MAIN FEEDWATER PUMPS TRIPPED, lit, or Annunciator K-26, GENERATOR LOCKOUT RELAY, lit, or Annunciator K-25, TURBINE OVERSPEED ALERT 1980 RPM, lit, or Annunciator F-21, COND HI PRESS 20" HG OR LOSS OF BOTH CIRC WTR PMPS, lit, or h.Annunciator K-3, AMSAC ACTUATED, lit.

~l T EOP: P-TURB;1 TITLE: TURBINE TRIP WITHOUT RX TRIP REQUIRED REV 7 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-CLOSED Manually trip turbine.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.

EOP: P-'TURB;1 T!TLE: TURBINE TRIP WITHOUT RX TRIP REQUIRED REV: 7 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 THE POINT OF ADDING HEAT (APPROXIMATELY 2.5xlO 6 AMPS)a.Go to Step 3.b.Verify control rods driving in to reduce reactor power in AUTO b.Perform the following:

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 EOP: P-TURB;1 TURBINE TRIP WITHOUT RX TRIP REQUIRED REV: 7 PAGE 5 of 12 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 3 Monitor S/G Levels: a.Levels-GREATER THAN 30%OR INCREASING a.IF MFW regulating and bypass 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.

EOP: P.~TURB;1 TURBINE TRIP WITHOUT RX TRIP REQUIRED REV: 7 PAGE 6 of 12 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 4 Verify Proper Operation Of Steam Dump: a.Verify annunciator G-15, STEAM DUMP ARMED-LIT a.Place steam dump mode selector switch to MANUAL.b.Condenser steam dump operating in AUTO b.IF steam dump NOT available, 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-TRENDING TO 2235 PSIG IF PRZR pressure can NOT be controlled, THEN refer to AP-PRZR.1, ABNORMAL PRESSURIZER PRESSURE.

EOP: P-TURB;1 TITLE: TURBINE TRIP WITHOUT RX TRIP REQUIRED REV: 7 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.

EOP: P-TURB;1 T1jLE: TURBINE TRIP WITHOUT RX TRIP REQUIRED REV 7 PAGE 8 of 12 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 7 Check MFW System: a.Verify MFW regulating and bypass valves-OPERATING IN AUTO b.MFW pumps-BOTH RUNNING c.Close one MFW pump discharge valve a.Place MFW regulating and bypass valve controllers in MANUAL and restore S/G level.b.Perform the following:

1)Verify one MFW pump running.IF NOT, THEN verify both MDAFW pumps running.2)Go to Step 8.d.Stop selected MFW pump 8 Establish Stable Plant Conditions:

a.Place rod control bank selector in MANUAL b.NIS intermediate ranges-BELOW THE POINT OF ADDING HEAT (APPROXIMATELY 2.5x10 AMPS)b.Return to Step 2.c.PRZR pressure-BETWEEN 2220 PSIG AND 2260 PSIG d.PRZR level-TRENDING TO PROGRAM e.S/G levels-TRENDING TO PROGRAM f.RCS Tavg-GREATER THAN 540'F c.Control PRZR heaters and spray as necessary.

d.Control charging as necessary.

e.Control S/G feed flow as necessary.

f.Control dumping steam as necessary.

IF cooldown continues, THEN close both MSIVs.

A~~

EOP: P-WRB:1 T1TLE: TURBINE TRIP WITHOUT RX TRIP REQUIRED REV 7 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 IMMEDIATELY TO PREVENT S/G ISOLATION.

NOTE: Maintain Reactor power less than 2%.This is within the capacity of MDAFW pumps.4 9 Check S/G Feed Flow Status: a.Manually start both MDAFW pumps b.Verify AFW flow-ESTABLISHED c.Verify MFW flow control valves CLOSED~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%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.Place A and B MFW regulating and bypass valve controllers in manual at 0%demand.f.Adjust MDAFW pump flow as necessary to restore S/G level.

EOP: P~TURB." 1 TITLE: TURBINE TRIP WITHOUT RX TRIP REQUIRED REV: 7 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:

o Both S/G levels-STABLE OR INCREASING b.Continue with Step ll.WHEN conditions met, THEN do Steps 10c through f.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: TURBINE TRIP WITHOUT RX TRIP REQUIRED REV: 7 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 energized-BOTH BUSSES GREATER THAN 4 KV c.IF either bus NOT energized, THEN refer to 0-6.9.2, ESTABLISHING AND/OR TRANSFERRING OFFSITE POWER TO BUS 12A/BUS 12B.d.Dispatch AO to perform Attachment SD-1

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EOP: II PERTURB;1 TURBINE TRIP WITHOUT RX TRIP REQUIRED REV 7 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 EOP: TURBINE TRIP WITHOUT RX TRIP REQUIRED REV: 7 PAGE 1 of 1 AP-TURB.1 APPENDIX LIST TITLE PAGES 1)2)ATTACHMENT SD-1 ATTACHMENT SD-2