ML17262B175
| ML17262B175 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 02/05/1993 |
| From: | ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| Shared Package | |
| ML17262B174 | List: |
| References | |
| AP-RCP.1, NUDOCS 9302250218 | |
| Download: ML17262B175 (64) | |
Text
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AP-RCP.1 TITLE:
RCP SEAL MALFUNCTION REV:
7 PAGE 1 of 8 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE
~ ~ 7-~>
PLANT SUPERINTENDENT 4-w-93 EFFECTIVE DATE CATEGORY 1.0 REVIEWED BY:
r 9302250218 9302i2 PDR ADOCK 05000244 p
1 1
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AP-RCP.1 TITLE:
RCP SEAL MALFUNCTION REV:
7 PAGE 2 of 8 A.
PURPOSE This procedure provides the instructions necessary to diagnose and to respond to a reactor coolant pump seal malfunction.
B.
ENTRY CONDITIONS/SYMPTOMS 1.
ENTRY CONDITIONS This procedure is entered from:
a.
E-3, STEAM GENERATOR TUBE RUPTURE, or b.
ES-1.2, POST LOCA COOLDOWN AND DEPRESSURIZATION, or d.
ECA-0.1, LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED, or :
e.
ECA-2.1, UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM GENERATORS, or f.
ECA-3.1, SGTR WITH LOSS OF REACTOR COOLANT-SUBCOOLED RECOVERY DESIRED, or g
ECA 3 ~ 2 g SGTR WITH LOSS OF REACTOR COOLANT SATURATEDg RECOVERY DESIRED, or h.
ECA-3.3, SGTR WITHOUT PRESSURIZER PRESSURE CONTROL, or i.
FR-I.1,
RESPONSE
TO HIGH PRESSURIZER LEVEL, when RCP seal malfunction is indicated.
2.
SYMPTOMS The symptoms of RCP SEAL MALFUNCTION are; a.
Annunciator B-17(18),
RCP A(B) No.1 SEAL HI-LO FLOW 5.5 GPM 0.25
, lit, or I
b.
Annunciator B-9(10),
RCP A(B) LABYR SEAL LO DIFF PRESS 15" H20, lit, or c.
Annunciator B-3(4),
RCP A(B) STAND PIPE HI LEVEL + 1 FT, lit, or Continued on next page
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AP-RCP.1 TITLE:
RCP SEAL MALFUNCTION REV:
7 PAGE 3 of 8 2.
SYMPTOMS (cont) d.
Annunciator B-11(12),
RCP A(B) STAND PIPE LO LEVEL -4 FT, lit, or e.
Annunciator B-25(26),
RCP A(B) No.
1 SEAL LO DIFF PRESS 220 PSID, lit, or f.
Annunciator B-l(2), RCP A(B) No.
1 SEAL OUT HI TEMP 200'F, lit, or, g.
Annunciator A-7(15),
RCP A(B)
CCW RETURN HIGH TEMP OR LOW FLOW, lit.
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AP-RCP-1 TITLE:
RCP SEAL MALFUNCTION REV:
7 PAGE 4 of 8 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION IF AT ANY TIME DURING THIS PROCEDURE
~ A REACTOR TRIP OR SI OCCURS E 0 ~
REACTOR TRIP OR SAFETY INJECTION; SHALL BE PERFORMED.
NOTE:
Step 1 is an immediate action step.
O 1
Check RCP 41 Seal Indications:(
o
¹1 seal leakoff flows - LESS THAN 5.5 GPM o
¹1 seal outlet temperatures-LESS THAN 215'F o
¹1 seal D/Ps GREATER THAN 220 PSID o
¹1 seal leakoff flows -
GREATER THAN 0.25 GPM IF any RCP ¹1 seal failure verified by MORE THAN ONE indication, THEN perform the following:
- a. Close affected RCP(s) ¹1 seal discharge valve.
~ RCP A, AOV-270A
~ RCP B, AOV-270B
- b. IF reactor trip breakers
- closed, THEN trip the reactor.
- c. Trip the affected RCP(s).
- d. IF reactor trip was required, THEN go to E-O, REACTOR TRIP or SAFETY INJECTION.
IF NOT, THEN go to Step 3,
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EOP AP-RCP.1 TjTLE:
RCP SEAL MALFUNCTXON REV:
7 PAGE 5 of 8 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 2
Check RCP Seal Return Valve Alignment:
a.
RCP seal return isolation valve, MOV-313, OPEN
- a. Perform the following:
- 1) Ensure CI reset.
- 2) Ensure both trains of XY relays for RCP seal return isolation valve, MOV-313, reset.
- 3) Open RCP seal return isolation valve, MOV-313.
- b. Verify RCP seal outlet valves OPEN
~ RCP A, AOV-270A
~ RCP B, AOV-270B IF MOV-313 can NOT be opened, THEN dispatch AO to AUX BLDG with RWST area key to check valve and breaker locally (breaker MCC C position 13J).
- b. Manually open valves.
IF valves can NOT be opened, THEN verify IA aligned to CNMT and go to Step 3.
c.
Check RCP ¹1 seal leakoff flow-LESS THAN 5.5 GPM
- c. Return to Step 1.
3 Check RCP Cooling:
o Annunciator A-7, RCP A CCW RETURN HIGH TEMP OR LOW FLOW-EXTINGUISHED o
Annunciator A-15, RCP B
CCW RETURN HIGH TEMP OR LOW FLOW-EXTINGUISHED Perform the following:
~ RCP A, MOV-749A and MOV-759A
~ RCP B, MOV-749B and MOV-759B
~ RCP A, AOV-754A
~ RCP B, AOV-754B
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AP-RCP.1 TITLE:
RCP SEAL MALFUNCTION REV:
7 PAGE 6 of 8 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 4 Check RCP g1 Seal Leakoff Flows:
o Seal leakoff flows - GREATER THAN 0.25 GPM o
Seal leakoff flows -
STABLE Perform the following:
- a. Monitor ¹1 seal outlet temperature, IF seal outlet temperature increasing, THEN return to Step 1.
- d. Verify affected RCP seal leakoff is between 0.25 gpm and 5.5 gpm using RCDT leak rate and affected RCP seal leakoff flow.
5 Check RCP g2 Seal Indications:i o
Annunciator B-3, RCP A STANDPIPE HI LEVEL +1 FT - EXTINGUISHED o
Annunciator B-4, RCP B STANDPIPE HI LEVEL +1 FT - EXTINGUISHED IF affected RCP ¹1 seal leakoff flow decreasing, THEN failure of ¹2 seal may be indicated.
Continue plant operation while closely monitoring RCP seal indications.
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AP-RCP.1 TITLE:
RCP SEAL MALFUNCTION REV:
7 PAGE 7 of 8 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION REDUCING CHARGING FLOW WILL RESULT IN INCREASING REGEN HX OUTLET TEMPERATURE.
6 Check RCP Labyrinth Seal D/Ps GREATER THAN 15 INCHES OF WATER Perform the following:
a.
Ensure open CCW outlet valves from RCP thermal barriers.
~ RCP A, AOV-754A
~ RCP B, AOV-754B
- b. Verify seal injection flow greater than 5
GPM for affected RCP.
- c. Adjust HCV-142 as necessary.
- d. Dispatch AO to check seal injection filter D/P.
e.
Check CCW surge tank level stable.
IF level increasing, THEN go to AP-CCW.1, LEAKAGE INTO THE COMPONENT COOLING LOOP.
7 Check RCP g3 Seal Indications:(
o Annunciator B-ll, RCP A STAND PIPE LO LEVEL -4FT - EXTINGUISHED o
Annunciator B-12, RCP B STAND PIPE LO LEVEL -4FT - EXTINGUISHED Check CNMT radiation monitors normal.
~ R-11
~ R-12 IF RCP standpipe level low and CNMT radiation increasing, THEN ¹ 3 seal leakage increase is probable.
Continue plant operation while closely monitoring RCP seal indications.
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AP-RCP.1 TITLE:
RCP SEAL MALFUNCTION REV:
7 PAGE 8 of 8 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 8 Monitor Plant Conditions:
a.
RCP ¹1 seal indications o
¹1 seal leakoff flow - LESS THAN 5.5 GPM o
¹1 seal outlet temperature-LESS THAN 215'F I
- a. IF affected RCP running, THEN return to Step 1.
IF NOT, THEN perform the following:
o
¹1 seal D/P -
GREATER THAN 220 PSID o
¹1 seal leakoff flows GREATER THAN 0.25 GPM
- 2) Consult Plant Staff to determine if cooldown required.
b.
RCS leakage NORMAL (Refer to leakage surveillance sheet)
- b. Perform the following:
- 1) Calculate RCS leakrate.
- 2) IF RCS leakrate greater than 1 gpm, THEN refer to Tech Spec section 3.1.5.2 for guidance.
IF NOT, THEN consult Plant Staff.
NOTE:
Refer to 0-9.3, NRC IMMEDIATE NOTIFICATION, for reporting requirements.
9 Notify Higher Supervision
-END-
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AP-RCP.1 RCP SEAL MALFUNCTION REV:
7 PAGE 1 of 1 AP-RCP.1 APPENDIX LIST TITLE PAGES 1)
ATTACHMENT RCP DIAGNOSTICS
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ECA-0.1 TITLE:
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV:
10 PAGE 1 of 20 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE 4
J /
PLAN SUPERINTENDENT C~
ci'ic",'...
EFFECTIVE DATE CATEGORY 1.0 REVIEWED BY:
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ECA-0.1 TITLE:
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV 10 PAGE 2 of 20 A.
PURPOSE This procedure provides actions to use normal operational systems to stabilize plant conditions following restoration of AC emergency power.
B.
ENTRY CONDITIONS/SYMPTOMS 1.
ENTRY CONDITIONS This procedure is entered from:
a.
ECA-O.O, LOSS OF ALL AC POWER, when AC emergency power is restored and SI is not required.
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ECA-0.1 TIILE:,
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV:
10 PAGE 3 of 20 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED a *x % *x x *% x
- x **************
CAUTION IF AN SI SIGNAL IS ACTUATED PRIOR TO PERFORMING STEP 10 OF THIS PROCEDURE, THEN SI SHOULD BE RESET TO PERMIT MANUAL LOADING OF EQUIPMENT ON AN AC EMERGENCY BUS.
x
- x
- x x x
%
- x x x x x
- x *****************
NOTE:
o'SFSTs should be monitored for information only.
FR procedures should not be implemented prior to completion of Step 10.
o Adverse CNMT values should be used whenever CNMT pressure is greater than 4 psig or CNMT radiation is greater than 10+
R/hr.
1 Check RCP Seal Isolation Status:
a.
RCP seal injection needle valves CLOSED
~ V-300A
~ V-300B
b.
~ MOV-759A
~ MOV-759B
- b. IF valves open or position not
- known, THEN check CCW pump status:
- 1) IF pump running, THEN go to Step 2.
- 2) IF pump NOT running, THEN manually close valves.
IF valve(s) can NOT be
~ AOV-754A
~ AOV-754B
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ECA-0.1 tlTLE:
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV 10 PAGE 4 of 20 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 2
Check CI Annunciator A-26, CONTAINMENT ISOLATION EXTINGUISHED Perform the following:
a.
Depress CI reset pushbutton
- b. Verify annunciator A-26, CONTAINMENT ISOLATION, extinguished.
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ECA-0.1 LIABLE:
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV:
10 PAGE 5 of 20 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 3 Establish IA to CNMT:
- a. Verify non-safeguards busses energized from offsite power o
Bus 13 normal feed CLOSED a.
Perform the following:
- 1) Close non-safeguards bus tie breakers:
-OR-o Bus 15 normal feed CLOSED
~ Bus 13 to Bus 14 tie
~ Bus 15 to Bus 16 tie b.
Check at least two SW pumps RUNNING
- b. Manually start SW pumps as power supply permits (258 kw each).
IF less than two SW pumps
- running, THEN go to Step 4.
- c. Verify turbine building SW isolation valves OPEN
- c. Manually align valves.
~ MOV-4613 and MOV-4670
~ MOV-4614 and MOV-4664
- d. Start at least two air compressors (75 kw each) e.
Check IA supply:
o Pressure GREATER THAN 60 PSIG o
Pressure STABLE OR INCREASING
- d. IF air compressors can NOT be
- started, THEN dispatch AO to locally reset compressors as necessary.
E e.
Perform the following:
- 1) Continue attempts to restore IA (Refer to AP-IA.l, LOSS OF INSTRUMENT AIR).
- 2) Continue with Step 6.
WHEN IA restored, THEN do Steps 3f through 5.
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ECA-0.1 TlTLE:
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV:
10 PAGE 6 of 20 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED
- x ***********
P **x x
- x **x x ***************
CAUTION THE LOADS PLACED ON THE ENERGIZED AC EMERGENCY BUS SHOULD NOT EXCEED THE CAPACITY OF THE POWER SOURCE.
- * * * * * * * * * *
- x
- x
- x x x *
- x *
- x * * * * * * * * * * * * * * *
- 4 Manually Load Following Equipment On AC Emergency
. Busses:
- a. Start one CCW pump (124 kw)
- b. Energize MCCs as power supply permits
~ MCC A from Bus 13
~ MCC B from Bus 15
~
MCC E from Bus 15
~ MCC F from Bus 15
- c. Verify instrument bus D
ENERGIZED d.
WHEN bus 15 restored, THEN reset control room lighting
- e. Start at least one CNMT RECIRC fan
- f. Restore Rx head cooling as power supply permits:
- 2) Start one Rx compartment cooling fan (23 kw each)
- 3) Start both control rod shroud fans (45 kw each)
Dispatch AO to establish normal shutdown alignment (Refer to Attachment SD-1) c. Restore power to ins trument bus D from MCC B or MCC A (maintenance supply).
1)
Go to Step 5.
- 2) Perform the following:
o Dispatch AO to reset UV relays at MCC C and MCC D.
o Manually start one fan as power supply permits.
(23 kw) 3)'Manually start at least one fan (45 kw)
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ECA-0.1 TITLE:
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV 10 PAGE 7 of 20 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 5
Check If Charging Flow Has Been Established:
a.
Charging pumps ANY RUNNING a.
Perform the following:
- 1) Ensure seal injection needle valves to both RCPs isolated:
~ RCP A, V-300A
~ RCP B, V-300B
- 2) Ensure HCV-142 open, demand at OS
~
- b. Charging pump suction aligned to RWST:
o LCV-112B -
OPEN o
LCV-112C CLOSED
- b. Manually align valves as necessary.
IF LCV-112B can NOT be opened, THEN perform the following:
- 1) Verify charging pump A NOT running and place in PULL STOP.
- 2) Dispatch AO to locally open manual charging pump suction from RWST (V-358 located in charging pump room).
3)
WHEN V-358 open, THEN direct AO to close V-268 to isolate charging pumps B and C from VCT (V-268 located in charging pump room).
- c. Start charging pumps (75 kw each) as necessary and adjust charging flow to restore PRZR level
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ECA-0.1 I
LITLE:
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV:
10 PAGE 8 of 20 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED
- 6 Monitor SI Initiation Criteria:
a.
RCS subcooling based on core exit T/Cs GREATER THAN O' USING FIGURE MIN SUBCOOLING b.
PRZR level GREATER THAN 5%
[30% adverse CNMT]
a.
Go to ECA-0.2, LOSS OF ALL AC POWER RECOVERY WITH SI REQUIRED, Step l.
- b. Control charging flow to maintain PRZR level.
IF PRZR level can NOT be maintained, THEN go to ECA-0.2, LOSS OF ALL AC POWER RECOVERY WITH SI REQUIRED, Step l.
7 Check PRZR Level GREATER THAN 13'40+o FOR ADVERSE CONTAINMENT]
Control charging flow as necessary.
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ECA-0.1 TITLE:
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV:
10 PAGE 9 of 20 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED
- x*x*xxxxxxxx*x*xxx*xxxxx*x**
CAUTION o
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).
o IF S/G NR LEVEL DECREASES TO LESS THAN 5%
[25% ADVERSE CNMT] AND FEED FLOW IS LESS THAN 200
- GPM, THEN THE MDAFW PUMPS SHOULD BE MANUALLYLOADED ON AC EMERGENCY BUS TO SUPPLY WATER TO THE S/G(S).
x x **x x x x x x x
- x x
- x ***x*************
NOTE:
o If MDAFW pump operation is not required, pump switches should be maintained in PULL-STOP to prevent automatic start.
o TDAFW pump flow control valves fail open on loss of IA.
8 Monitor Intact S/G Levels:
a.
Narrow range level GREATER THAN 5%
[25% adverse CNMT)
- a. Maintain total feed flow greater than 200 gpm until narrow range level greater than 5%
[25%
adverse CNMT] in at least one S/G.
IF feed flow less than 200
- gpm, THEN perform the following:
- 1) Verify MDAFW pump discharge valves open.
~ MOV-4007
~ MOV-4008
- b. Control feed flow to maintain narrow range level between 17%
[25% adverse CNMT) and 39%
- 2) Manually start MDAFW pumps as necessary (228 KW each).
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ECA-O.l TlTLE:
LOSS'OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV:
10 PAGE 10 of 20 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 9 Establish S/G Pressure Control:
- a. Adjust S/G ARV controllers to maintain existing S/G pressure
- b. Verify S/G ARV controllers in AUTO
- c. Dispatch AO to perform Attachment SD-2
- x**xx*xx***xx x x***%x*******x********
CAUTION IF AN SI SIGNAL IS ACTUATED AFTER THE SI PUMP SWITCHES ARE PLACED IN AUTO, THEN ECA-0.2, LOSS OF ALL AC POWER RECOVERY WITH SI REQUIRED, SHOULD BE PERFORMED.
x
- x **x* x ~ x
- x
- x x ****************
NOTE:
Safeguards pump switches should be placed in AUTO only if associated bus is energized.
10 Place Following Pump Switches In AUTO:
~ SI pumps
~ RHR pumps
~ CNMT spray pumps
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ECA-0.1 TIILE:
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV 10 PAGE 11 of 20 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED NOTE:
FR procedures may now be implemented as necessary.
11 Verify Adequate SW Flow To CCW Hx:
- a. Verify at least two SW pumps RUNNING
- b. Verify AUX BLDG SW isolation valves OPEN
~ MOV-4615 and MOV-4734
~ MOV-4616 and MOV-4735
- c. Verify CNMT RECIRC fan annunciator C-2, HIGH TEMPERATURE ALARM -
EXTINGUISHED
- a. Manually start pumps as power supply permits (258 kw each).
IF less than two SW pumps can be
- operated, THEN go to Step 19.
Continue with Step 19.
WHEN SW restored to AUX BLDG, THEN do Steps llc through 18.
12 Check If Normal CVCS Operation Can Be Established
- a. Verify IA restored:
OPEN o
IA pressure GREATER THAN 60 PSIG a.
Continue with'tep 19.
WHEN IA
- restored, THEN do Steps 12 through 18.
- b. Charging pump
- ANY RUNNING
- b. Continue with Step 19.
WHEN any charging pump running, THEN do Steps 13 through 18.
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ECA-0.1 TITLE:
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV 10 PAGE 12 of 20 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED
- x****x*
ax xx*~'Pxxkxxxxxxxxxxx*xx*x**x**
CAUTION o
RCP THERMAL BARRIER COOLING SHOULD BE ESTABLISHED SLOWLY TO MINIMIZE POTENTIAL INTRODUCTION OF STEAM INTO THE CCW SYSTEM AND THERMAL SHOCK TO RCP.
o RCP SEAL INJECTION SHOULD BE ESTABLISHED SLOWLY TO MINIMIZE RCP THERMAL STRESSES AND POTENTIAL SEAL FAILURES.
o AS PART OF SUBSEQUENT RECOVERY ACTIONS, RCP(S)
SHOULD NOT BE STARTED PRIOR TO A STATUS EVALUATION UNLESS REQUIRED BY AN INADEQUATE CORE COOLING SITUATION.
- x*********
x x ****x x x x****x*************
NOTE:
SW should be aligned to CCW Hxs before restoring RCP seal cooling.
13 Check RCP Cooling:
a.
Establish normal cooling to RCPs (Refer to Attachment SEAL COOLING).
o Annunciator A-7, RCP 1A CCW RETURN HIGH TEMP OR LOW FLOW
-.EXTINGUISHED o
Annunciator A-15, RCP 1B CCW RETURN HIGH TEMP OR LOW FLOW EXTINGUISHED b.
Check RCP seal injection:
o Labyrinth seal D/Ps GREATER THAN 15 INCHES OF WATER
-OR-o RCP seal injection flow to each RCP GREATER THAN 6 GPM
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ECA-0.1 1'I ZLE:
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV:
10 PAGE 13 of 20 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 14 Check If Seal Return Flow Should Be Established:
- a. Verify RCP ¹1 seal outlet temperature LESS THAN 235'F a.
Go to Step 15.
- b. Verify RCP seal outlet valves OPEN
~ AOV-270A
~ AOV-270B
- b. Manually open valves as necessary.
- c. Reset both trains oE XY relays for RCP seal return isolation valve MOV-313 'i'f necessary d.
Open RCP seal return isolation valve MOV-313
- d. Perform the following:
- 1) Place MOV-313 switch to OPEN.
- e. Verify RCP ¹1 seal leakoff flow LESS THAN 5.5 GPM
- e. IF any RCP seal leakoff flow greater than 5.5 gpm THEN close the affected RCP seal discharge valve:
~ RCP A, AOV-270A
~ RCP B, AOV-270B E. Verify RCP ¹1 seal leakoEE flow GREATER THAN 0.25 GPM IF both RCP seal discharge valves are shut, THEN go to Step 15.
- f. Refer to AP-RCP.1, RCP SEAL MALFUNCTION.
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ECA-0.1 TITLE:
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV 10 PAGE 14 of 20 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 15 Verify PRZR Level GREATER THAN 134 [40: adverse CNMT]
Continue with Step 19.
WHEN PRZR level increases to greater than 13%
(40% adverse CNMT], THEN do Steps 16 through 18.
16 Establish Normal Letdown:
- a. Establish charging line flow to REGEN Hx -
GREATER THAN 20 GPM
- b. Place the following switches to CLOSE:
~ Letdown orifice valves (AOV-200A, AOV-200B, and AOV-202)
~ AOV-371, letdown isolation valve
~ AOV-427, loop B cold leg to REGEN Hx c.
Place letdown controllers in MANUAL at 40% open
~ TCV-130
~ PCV-135
- d. Reset both trains of XY relays for AOV-371 and AOV-427 if necessary e.
Open AOV-371 and AOV-427 IF RCP seal return has been established, THEN establish excess letdown as follows:
o Place excess letdown divert
- valve, AOV-312, to NORMAL.
o Ensure CCW from excess letdown
- open, (AOV-745).
o Open excess letdown isolation valve AOV-310.
o Slowly open HCV-123 to maintain excess letdown temperature less than 195'F and pressure less than 100 psig.
o Adjust charging pump speed as necessary.
IF RCP seal return NOT established, THEN consult TSC to determine if excess letdown should be placed in service.
- f. Open letdown orifice valves as necessary
- g. Place TCV-130 in AUTO at 105'F h.
Place PCV-135 in AUTO at 250 psig
- i. Adjust charging pump speed and HCV-142 as necessary
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ECA-0.1 T I TI.E:
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV:
10 PAGE 15 of 20 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 17 Check VCT Makeup System:
- a. Verify the following:
- 1) Boric acid flow control valve SET FOR REQUIRED CSD CONCENTRATION (Refer to Figure SDM)
- a. IF VCT auto makeup can NOT be established, THEN manually control VCT level (Refer to ER-CVCS.1, REACTOR MAKEUP CONTROL MALFUNCTION).
- 2) At least one BA and RMW pump in AUTO 3)
RMW mode selector switch in AUTO 4)
RMW control armed RED LIGHT LIT b.
Check VCT level o
Level GREATER THAN 20%
-OR-o Level STABLE OR INCREASING
- b. Manually increase VCT makeup flow as follows:
- 1) Ensure BA transfer pumps and RMW pumps running.
IF NOT,
'HEN dispatch AO to reset MCC C and MCC D UV lockouts as necessary.
- 2) Place RMW'flow control valve HCV-111 in MANUAL and increase RMW flow.
- 3) Increase boric acid flow as necessary.
IF VCT level can NOT be
- restored, THEN go to Step 19.
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ECA-0 TITLE:
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV:
10 PAGE 16 of 20 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 18 Check Charging Pump Suction Aligned To VCT:
a.
VCT level GREATER THAN 20%
- a. IF VCT level can NOT be maintained greater than 5%,
THEN perform the following:
- 1) Ensure charging pump suction aligned to RWST:
o LCV-112B open o
LCV-112C closed
- b. Verify charging pumps aligned to VCT o
LCV-112C OPEN
- 2) Continue with Step 19.
WHEN VCT level greater than 40%,
THEN do Step 18b.
- b. Manually align valves as necessary.
o LCV-112B,- CLOSED 19 Control PRZR Level:
a.
Check letdown
- IN SERVICE
- b. Maintain PRZR level between 13%
(40% adverse CNMT) and 50%
a.
Stop and start charging pumps as necessary to control PRZR level.
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ECA-0.1 TITLE:
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV 10 PAGE 17 of 20 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED NOTE:
o If auxiliary spray is in use, spray flow may be increased by closing normal charging valve AOV-294 and normal PRZR spray valves.
o When using a PRZR PORV select one with an operable block valve.
20 Establish PRZR Pressure Control:
a.
Check letdown
- IN SERVICE a.
Perform the following:
1)
Use PRZR heaters and one PRZR PORV to maintain RCS pressure b.
Use PRZR heaters and auxiliary spray valve (AOV-296) to maintain RCS pressure IF IA NOT available, THEN Refer to Attachment N2 PORVS to operate PORV.
2)
Go to Step 21.
21 Verify Natural Circulation:
o RCS subcooling based on core exit T/Cs GREATER THAN O' USING FIGURE MIN SUBCOOLING Increase dumping steam from intact S/Gs.
o S/G pressures STABLE OR DECREASING o
RCS hot leg temperatures STABLE OR DECREASING o
Core exit T/Cs STABLE OR DECREASING o
RCS cold leg temperatures.-
AT SATURATION TEMPERATURE FOR S/G PRESSURE
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ECA-0.1 T l 7 LE:
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV 10 PAGE 18 of 20 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED NOTE:
Adverse CNMT conditions or loss of forced air cooling may result in failure of NIS detectors.
/
22 Check If Source Range Detectors Should Be Energized:
a.
Source range channels DEENERGIZED a.
Go to Step 22e.
b.
Check intermediate range flux EITHER CHANNEL LESS THAN 10 1O AMPS
- b. Perform the following:
- 1) IF neither intermediate range channel is decreasing THEN initiate boration.
- 2) Continue with Step 23.
WHEN flux is LESS THAN 10 amps on any operable
- channel, THEN do Steps 22c through e.
c.
Check the following:
o Both intermediate range channels LESS THAN lo-l AMPS
- c. Continue with Step 23.
WHEN either condition met, THEN do Steps 22d and e.
-OR-o Greater than 20 minutes since reactor trip
- d. Verify source range detectors ENERGIZED
- d. Manually energize source range detectors by depressing P-6 permissive defeat pushbuttons (2
of 2).
IF source ranges can NOT be
- restored, THEN refer to ER-NIS.1, SR MALFUNCTION and go to Step 23.
- e. Transfer Rk-45 recorder to one source range and one intermediate range channel
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ECA-0.1 TITLE:
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV:
10 PAGE 19 of 20 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 23 Verify Adequate Shutdown Margin:
- b. Borate as necessary.
24 Maintain Stable Plant Conditions a.
RCS pressure STABLE b.
RCS temperature STABLE c.
PRZR level BETWEEN 13%
[40%
adverse CNMT) and 50%
- d. Intact S/G level BETWEEN 17%
[25% adverse CNMT) and 39%
- a. Control PRZR heaters and auxiliary spray if available.
- b. Control dumping steam as necessary.
- c. Control charging as necessary.
- d. Control S/G feed flow as necessary.
+25 Monitor SI Initiation Criteria:
a.
RCS subcooling based on core exit T/Cs GREATER THAN O' USING FIGURE MIN SUBCOOLING b.
PRZR level GREATER THAN 5%
[30% adverse CNMT]
a.
Go to ECA-0.2, LOSS OF ALL AC POWER RECOVERY WITH SI REQUIRED, Step 1.
- b. Control charging flow to maintain PRZR level.
IF PRZR level can NOT be maintained, THEN go to ECA-0.2, LOSS OF ALL AC POWER RECOVERY WITH SI REQUIRED, Step 1.
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ECA-0.1 ilTLE:
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV'0 PAGE 20 of 20 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 26 Try To Restore Offsite Power To All AC Busses (Refer to ER-ELEC.1, RESTORATION OF OFFSITE POWER)
Maintain plant condition stable using AC emergency power.
27 Determine If Natural Circulation Cooldown Is Required:
- a. Consult plant staff to determine if RCS cooldown is necessary
- a. IF cooldown NOT required, THEN go to 0-3, HOT SHUTDOWN WITH XENON PRESENT.
f b.
Go to ES-0.2, NATURAL CIRCULATION COOLDOWN.
c.
Go to 0-2.2, PLANT SHUTDOWN FROM HOT SHUTDOWN TO COLD SHUTDOWN
-END-
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ECA-0.1 TITLE:
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV:
10 PAGE 1 of 1 ECA-0.1 APPENDIX LIST TITLE 1)
FIGURE MIN SUBCOOLING 2)
FIGURE SDM 3)
ATTACHMENT SD-1 4)
ATTACHMENT SD-2 5)
ATTACHMENT N2 PORVS 6)
ATTACHMENT SEAL COOLING 7)
ATTACHMENT AUX BLDG SW PAGES
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ECA-0.1 T I 'ILE:
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV 10 PAGE 1 of 1 FIGURE MIN SUBCOOLING NOTE:
Subcooling Margin = Saturation Temperature From Figure Below [-] Core Exit T/C Indication RC 2500 2400 2300 2200 2100 2000 1900 1800 1700 1600 1500 1400 1300 1200 1100 1000 900 800 700 600 500 400 300 200 100 0
S PRESSURE (PSIG)
RCS PRESSURE INCREMENTS 20 PSIG SUBCOOLED REGION ADVERSE CNMT NORMAL CNMT INADEQUATE SUBCOOLING REGION TEMPERATURE INCREMENTS 10'F 200 250 300 350 400 450 500 550 600 650 700 CORE EXIT SATURATION TEMPERATURE ('F)
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ECA-0.1 TITLE:
LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED REV:
10 PAGE 1 of 1 NOTE:
FIGURE SDM o Curve includes allowance for one stuck rod.
Add 100 ppm for each additional stuck rod.
o To obtain core burnup, use PPCS turn on code BURNUP.
BORON CONCENTRATION (PPH) 1800 1600 BORON INCREMENTS 20 PPM 1400 1200 1000 ADEQUATE SDM 100 PPH CONSERVATISM INCLUDED 800 600 400 BORATE 200 BURNUP INCREMENTS 100 HWD/HTU 0
1000 2000 3000 4000 5000 6000 7000
'8000 9000 10000 11000 12000 CYCLE 24 BURNUP tHWD/HTU)
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