ML072960545
| ML072960545 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 05/09/2007 |
| From: | Leary W Tennessee Valley Authority |
| To: | NRC/RGN-II |
| References | |
| 0-SO-30-2, 50-327/07-301, 50-328/07-301 0-SO-30-2, Rev 13 | |
| Download: ML072960545 (147) | |
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TENNESSEE VALLEY AUTHORITY SEQUOYAH NUCLEAR PLANT SYSTEM OPERATING INSTRUCTION 0-50-30-2 CONTROL ROOM ISOLATION Revision 13 QUALITY RELATED W. T. LEARY PREPARED/PROOFREAD BY
-'-'-'---'-'--'==~'--
OPERATIONS TONEY WHITIEN EFFECTIVE DATE:
01/05/06 APPROVED BY:
--'-'='-'-'=-'----'--'-'--'--'--'='-'-
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LEVEL OF USE:
CONTINUOUS USE REVISION DESCRIPTION :
Revised to relocate direction to perform Section 8.2 from Section 8.1. This provides for verification of required automatic actions in Section 8.1 regardless of the source or validity of the initiating signal.
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SQN 0-SO-30-2 CONTROL ROOM ISOLATION Rev: 13 0
Page 2 of 20 TABLE OF CONTENTS Page 1 of 1 Section Title Page 1.0 1.1 1.2 2.0 2.1 2.2 3.0
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4.0 5.0 6.0 7.0 8.0 8.1 8.2 9.0
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INTRODUCTION 3
Purpose 3
Scope 3
REFERENCES 3
Performance References.......................................................................
3 Developmental References 3
PRECAUTIONS AND LIMITATIONS 4
PREREQUISITE ACTIONS 4
STARTUP/STANDBY READINESS...........................................................
5 NORMAL OPERATION 5
SHUTDOWN...............................................................................................
5 INFREQUENT OPERATION 6
Emergency Mode Control Room Isolation.............................................
6 Recovery from Control Room Isolation..................................................
13 RECORDS..................................................................................................
19 SOURCE NOTES 20
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SQN 0-SO-30-2 CONTROL ROOM ISOLATION Rev: 13 0
Page 3 of 20
1.0 INTRODUCTION
1.1 Purpose To provide instructions for the verification and recovery from control room isolations.
1.2 Scope A. Emergency Mode Control Room Isolation.
B. Recovery from Control Room Isolation
2.0 REFERENCES
2.1 Performance References None
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2.2 Developmental References A. 0-SO-30-1, Control Building Heating, Air Conditioning, and Ventilation B. SSP-12.6, Equipment Status Verification And Checking Program C. FSAR 6.4 D. Technical Specifications 3.7.7 E. TVA Drawings
- 1. 47W61 1 1 thru 6
- 2. 47W865-3,7
- 3. 47W866-4
- 4. 47W867-1 thru 4
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SQN 0-80-30-2 CONTROL ROOM ISOLATION Rev: 13 0
Page 4 of 20 Date 3.0 PRECAUTIONS AND LIMITATIONS A. Replacing HEPA and charcoal filters will be necessary if their differential pressure reaches 3" H20.
4.0 PREREQUISITE ACTIONS NOTE Throughout this Instruction where an IFITHEN statement exists, the step should be N/A if condition does not exist.
[1]
ENSURE Instruction to be used is a copy of the effective version.
[2]
ENSURE Precautions and Limitations Section 3.0, has been reviewed.
[3]
IF ventilation alignment changes are made which could impact door closure, THEN NOTIFY Fire Operations.
[4]
ENSURE each performer documents their name and initials:
Print Name
[5]
INDICATE below which performance section of this Instruction will be used and the reason for its performance.
Initials D 8.0 INFREQUENT OPERATION REASON:
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SQN 0-80-30-2 CONTROL ROOM ISOLATION Rev: 13 0
Page 5 of 20 Date 5.0 STARTUP/STANDBY READINESS None 6.0 NORMAL OPERATION None 7.0 SHUTDOWN None
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SQN 0-80-30-2 CONTROL ROOM ISOLATION Rev: 13 0
Page 6 of20 8.0 INFREQUENT OPERATION 8.1 Emergency Mode Control Room Isolation
[1]
ACKNOWLEDGE Control Room Ventilation Isolation alarm.
[2]
IF CRI is from a valid SIS or High Radiation signal, THEN NOTIFY RADCON to monitor Control Building el. 732 work areas for habitability impact.
[3]
ENSURE either Control Building N C AHU RUNNING and associated AHU inlet OPEN:
Date CONTROL BLDG RUNNING AHU INLET OPEN AIC AHU
,j
,j A
0 0-FCO-311-20 0
B 0
0-FCO-311-23 0
[4]
IF Control Building N C AHUs stopped, THEN DISPATCH personnel to:
[a]
OPEN Mechanical equipment room door C-39.
[b]
OPEN MCR door C-48 or C-56.
[5]
ENSURE either Electrical Board Room Chiller RUNNING and associated AHU inlet OPEN:
ELECTRICAL RUNNING AHU INLET OPEN BOARD ROOM AlC
,j
,j AHU A
0 0-FCO-311-27 0
B 0
0-FCO-311-28 0
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SON 0-SO-30-2 CONTROL ROOM ISOLATION Rev: 13 0
Page 7of20 8.1 Emergency Mode Control Room Isolation (Continued)
[6]
ENSURE either Control Building Emergency Air Cleanup fan RUNNING and associated fan inlet OPEN:
Date.
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CONTROL BLDG EMERGENCY AIR RUNNING FAN INLET OPEN CLEANUP FAN
-,J
-,J A
0 0-FCO-311-9 0
B 0
0-FCO-311-11 0
[7]
ENSURE at least one Emergency Air Pressurizing Fan RUNNING and associated fan inlet OPEN:
CONTROL BLDG RUNNING FAN INLET OPEN
- EMERGENCY PRESSURIZING FAN A
0 0-FCO-311 -108 0
B 0
0-FCO-311-109 0
[8]
ENSURE MeR and Spreading Room Fresh Air Fans STOPPED:
[a]
Spreading Room Supply Fan.
[b]
Spreading Room Exhaust Fan A
[c]
Spreading Room Exhaust Fan B.
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Page 8 of 20 8.1 Emergency Mode Control Room Isolation (Continued)
Date NOTE
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NOTE During Train testing the dampers that are not applicable to the Train being tested can be N/A.
[9]
ENSURE MCR and Spreading Room Fresh Air Dampers CLOSED:
DAMPER CRI DESCRIPTION CLOSED TRAIN 0-FCV-31 1-105A A
MCR fresh air 0
0-FCV-311-106A B
MCR fresh air 0
0-FCV-311-105B A
Spreading room fresh air 0
0-FCV-311-106B B
Spreading room fresh air 0
0-FCO-311-7f:J AlB Spreading Room Exhaust Fan A outlet 0
0-FCO-311-80 AlB Spreading Room Exhaust Fan B outlet 0
0-FCO-311-17 A
Spread ing room supply discharge 0
0-FCO-311-102 B
Spreading room supply discharge 0
[10]
ENSURE Locker Room Exhaust Fan STOPPED.
During Train testing the dampers that are not applicable to the Train being tested can be N/A.
[11]
ENSURE Locker Room Exhaust Dampers CLOSED:
DAMPER CRI DESCRIPTION CLOSED TRAIN 0-FCO-31 1-1 03 A
TOILET AND LOCKER ROOM EXHAUST 0
FAN DISCHARGE 0-FCO-311-104 B
TOILETAND LOCKER ROOM EXHAUST 0
FAN DISCHARGE o
Date o
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Page 9 of 20 8.1 Eme rgency Mode Control Room Iso lation (Continued)
NOTE Battery Room Exhaust Fans are started and stopped, via their respective breakers on the 480V C&A Vent Boards.
[12]
IF one Electrical Board Room AHU in service, THEN ENSURE one of the following Battery Room Exhaust Fans RUNNING:
[a]
Battery Room Exhaust Fan A. [C&A Vent Board 1A1-A / 12A]
0
[b]
Battery Room Exhaust Fan B. [C&A Vent Board 1B1-B /1 1E) 0
[c]
Battery Room Exhaust Fan C. [C&A Vent Board 2B1 -B /11 E) 0 NOTE All Battery Room Exhaust Fans may be out of service no greater than 11 days. If the TSC is manned, it will assume responsibility for tracking and initiating corrective action. If the TSC is NOT manned, the MCR will retain this responsibility.
[13]
IF all Electrical Board Room AHUs stopped, THEN PERFORM the following:
[a] ENSURE all battery room exhaust fans stopped.
0
[b] RECORD present time 0
[c]IF TSC is manned, THEN NOTIFY TSC to track and initiate corrective action.
[14]
IF Battery Room Exhaust Fans off and either Electrical Board Room AHU running, THEN
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CLOSE damper [31A-157] (Located above Auxiliary Instrument Room Access Door).
[15]
ENSURE Shutdown Board Room Pressurizing Fans A and B are STOPPED:
FAN DESCRIPTION STOPPED 1A-A Pressurizing Fan 0
1B-B Pressurizing Fan 0
2A-A Pressurizing Fan 0
2B-B Pressurizing Fan 0
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Page 10 of20 B.1 Emergency Mode Con trol Room Isolation (Continued)
Date CAUTION NOTE:
Placing a tra in of CREVS in P-Auto (standby mode) will prevent automatic start on an accident signal. Refer to Tech Spec LCO 3.7.7.
One train of CREVS may be stopped and placed in standby to protect the charcoa l bed filter for that train.
NOTE:
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Control Building Emergency Pressurization Fan A takes suction through the normal suction flowpath (north end of Control Bldg).
If smoke and/or radiation is still entering the MCR after CRI is actuated, then stopping Emergency Press Fan A may prevent further smoke and/or radiation intake.
[16]
IF it is desired to align the Train A Control Room Emergency Ventilation System (CREV8) to P-Auto (Siandby mode) operation, THEN PERFORM the following:
[a]
PLACE CREVS fan handswitches to the P-AUTO position (hand switches in Pull Out position):
[1]
[O-HS-311-10BA], Control Building Emergency Pressurization Fan A
[2]
[0-HS-311-BA], Control Building Emergency Air Cleanup Fan A.
[b]
PLACE the CREVS fan handswitches to the STOP position :
[1]
[O-HS-311 -108A], Control Building Emergency Pressurization Fan A.
[2]
[O-HS-311-8A], Control Building Emergency Air Cleanup Fan A.
[c]
VERIFY the applicable fan inlet dampers are CLOSED:
[1]
[O-FCO-311-108], Control Building Emergency Pressurization Fan A Inlet damper.
[2]
[O-FCO-311-9], Control Building Emergency Air Cleanup Fan A Inlet damper.
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Page 11 of 20 8.1 Emergency Mode Control Room Isolation (Continued)
Oate CAUTION NOTE:
NOTE:
Placing a train of CREVS in P-Auto (standby mode) will prevent automatic start on an accident signal. Refer to Tech Spec LCO 3.7.7.
One train of CREVS may be stopped and placed in P-Auto (standby) to protect the charcoal bed filter for that train.
Control Building Emergency Pressurization Fan B takes suction through the emergency suction fiowpath (south end of Control Building). If smoke and/or radiation is entering the MCR after CRI is actuated. then stopping Emergency Press Fan B may prevent further smoke and or radiation intake.
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[17]
IF it is desired to align the Train B Control Room I;..mergency Ventilation System (CREVS) to P-AUTO (standby mode operation), THEN PERFORM the following:
[a]
PLACE CREVS fan handswitches to the P-AUTO position (hand switches in Pull Out position):
[1]
[O-HS-31 1-109A] Control Building Emergency Pressurization Fan B
[2]
[O-HS-311-10Al Control Building Emergency Air Cleanup Fan B.
[b]
PLACE the CREVS fan handswitches to the STOP position:
[1]
[O-HS-311-109A] Control Building Emergency Pressurization Fan B.
[2]
[O-HS-311-10A] Control Building Emergency Air Cleanup Fan B.
[c]
VERIFY the applicable fan inlet dampers are CLOSED:
[1]
[O-FCO-311-109] Control Building Emergency Pressurization Fan B Inlet damper.
[2]
[O*FCO-311-11] Control Building Emergency Air Cleanup Fan B Inlet damper.
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Page 12 of 20 Date 8.1 Emergency Mode Control Room Isolation (Continued)
[18]
IF paint or solvents were used on Control Building el 732 or the Control Building roof within the 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> prior to CREVS startup, THEN NOTIFY Systems Engineering to evaluate affect on CREVS charcoal filters and to ensure compliance with Tech Spec 4.7.7.c.
[19]
WHEN recovery from Control Room Isolation is desired, THEN PERFORM Section 8.2, Recovery from Control Room Isolation.
END OF TEXT
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Page 13 of20 Date 8.2 Recovery From Control Room Isolation
[1)
OBTAIN permission from the Shift Manager to perform the Recovery From Control Room Isolation.
NOTE The following handswitch alignment prevents all four fans from starting and possibly over pressurizing the Shutdown Board Rooms when the Control Room Isolation (CRI) is reset.
[2)
ENSURE two of the following handswitches (one per Unit) are in the P-AUTO position and the other two handswitches (one per Unit). are in the OFF position:
DESCRIPTION HANDSWITCH P*AUTO OFF INITIALS
(-J)
(..J)
SO BD RM A PRESS FAN 0-HS-313-383A 1A-A SO BD RMA PRESS FAN 0-HS-313-384A 1B-B SO BD RM B PRESS FAN 0-HS-313-391A 2A-A SO BO RM B PRESS FAN 0-HS-313-392A 2B-B
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Page 14 of 20 8.2 Recovery from Control Room Isolation (Continued)
[4]
RESET the Control Room Ventilation Isolation signal with one pair of the following Unit's handswitches (N/A handswitches not used):
[a]
[1-HS-31A-7A], Control Bldg, Iso\\. Train A.
[b]
[1-HS-31A-38A], Control Bldg. lsol. Train B.
[c]
[2-HS-31A-7AJ, Control Bldg. Iso\\. Train A.
[d]
[2-HS-31A-38AJ, Control Bldg. Iso\\. Train B.
[5]
VERIFY the Control Room Ventilation Isolation signal has been reset by the following annunciator windows on panel 1, 2-XA-55-6C not lit:
[a]
Control Room Isolation Train A (Window E-5).
Date
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[b]
Control Room Isolation Train B (Window E-6).
NOTE Manual operation of the Main Control Room and Spreading Room Fresh Air Dampers will be required when their applicable handswitches are not in the A*AUTO position.
[6]
VERIFY the following automatic operations occur:
EQUIPMENT IDENTIFICATION POSITION INITIALS Main Control Room Fresh Air Damper OPEN 0-FCV-311-105A Main Control Room Fresh Air Damper OPEN 0-FCV-311-106A Spreading Room Fresh Air Damper OPEN O-FCV 311-105B Spreading Room Fresh Air Damper OPEN 0-FCV-311-106B T & L Rm Exh Fan Disch OPEN 0-FCO-31 1-103 T & L Rm Exh Fan Disch OPEN 0-FCO-311-104 Spreading Room Supply Fan Discharge OPEN Damoer 0-FCO-311-102 Spreading Room Supply Fan Discharge OPEN Damoer 0-FCO-311-17
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Page 15 of 20 Date B.2 Recovery from Control Room Isolation (Continued)
[7]
ENSURE the Control Building Emergency Pressurizing Fan A has been STOPPED AND
[O-HS-311-10BA], Control Building Emergency Press Fan A, is in the A-AUTO position.
[B]
VERIFY [O-FCO-311-1 OB], Control Building Emergency Press Fan A Inlet, is CLOSED.
[9]
ENSURE the Control Building Emergency Pressurizing Fan B has been STOPPED AND
[0-HS-311 -109A], Control Building Emergency Press Fan B, is in the A-AUTO position.
[10]
VERIFY [0-FCO-311-1 09], Control Building Emergency Press Fan B Inlet, is CLOSED.
[11]
ENSURE the Control Building Emergency Air Cleanup Fan A has been STOPPED AND
[0-HS-311-BA], Control Building Emergency Air Cleanup Fan A, is in the A-AUTO position.
[12]
VERIFY [0*FCO-311-9], Control Building Emergency Air Cleanup Fan A Inlet, is CLOSED.
[13]
ENSURE the Control Building Emergency Air Cleanup Fan B has been STOPPED AND
[O-HS-311-10A], Control Building Emergency Air Cleanup Fan B, is in the A-AUTO position.
[14]
VERIFY [0*FCO-311-11], Control Building Emergency Air Cleanup Fan B Inlet, is CLOSED.
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Page 16 of 20 Date 8.2 Recovery from Control Room Isolation (Continued)
[15]
PLACE one of the Spreading Room Exhaust Fans in service by performing the following:
[a]
START fan using its applicable handswitch (N/A fan not started):
[1]
[0-HS-311-79AJ, Spreading Room Exhaust Fan A.
[2]
[0-HS-311-80AJ, Spreading Room Exhaust Fan B.
[b]
VERIFY the applicable fan's discharge damper OPENS (N/A damper for fan not started):
[1]
[0-FCO-311-79J, Spreading Room Exhaust Fan A Out.
[2]
[0-FCO-311-80J, Spreading Room Exhaust Fan B Out.
[16]
ENSURE both of the Spreading Room Exhaust Fan handswitches are in the A-AUTO position:
[a]
[0-HS-311-79A]. Spreading Room Exhaust Fan A.
[b]
rO-HS-311-80A], Spreading Room Exhaust Fan B.
CAUTION The Spreading Room Exhaust Fan should have been operating for at least 20 seconds to prevent Spreading Room Supply Fan trip out on low flow.
[17]
PLACE [0-HS-311-36AJ, Spreading Room Supply Fan, in START AND RETURN to A-AUTO.
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SQN 0-SO-30-2 CONTROL ROOM ISOLATION Rev: 13 0
Page 17 of 20 Oate 8.2 Recovery from Control Room Isolation (Continued)
[18]
ENSURE Locker Room Exhaust Fan running, AND
[O-HS-311-81A] in A-AUTO.
NOTE The following selected fans may start when initially placed in the P-AUTO position, but should be STOPPED and returned back to P-AUTO.
[19]
VERIFY the two Shutdown Board Room Fans that were selected in step [2] for P-AUTO are running, THEN PLACE the other two Shutdown Board Room Fans handswitches, which were in the OFF position in step [2], to the P-AUTO position:
DESCRIPTION HANDSWITCH RUNNING P-AUTO INITIALS
(.,f)
(..J)
SO BO RM A PRESS FAN 0-HS-31 3-383A 1A-A SO BO RM A PRESS FAN 0-HS-31 3-384A 1B-B SO BO RM B PRESS FAN 0-HS-313-391 A 2A-A SO BO RM B PRESS FAN 0-HS-313-392A 2B-B
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Page 18 of 20 Date 8.2 Recovery from Control Room Isolation (Continued)
[20]
INDEPENDENTLY VERIFY following handswitch positions:
DESCRIPTION HANDSWITCH POSITION INITIALS SD BD RMA 0-HS-313-383A P-AUTO PRESS FAN 1A-A SD BD RMA 0-HS-313-384A P-AUTO PRESS FAN 1B-B SD BD RM B 0-HS-313-391A P-AUTO PRESS FAN 2A-A SD BD RM B 0-HS-313-392A P-AUTO PRESS FAN 2B-B Locker Room 0-HS-311-81A A-AUTO Exhaust Fan Spreading Room 0-HS-311-36A A-AUTO Supply Fan Spreading Room 0-HS-311 -79A A-AUTO Exhaust Fan A Spreading Room 0-HS-311-80A A-AUTO Exhaust Fan B Cntl Bldg Emerg Air 0-HS-311-8A A-AUTO Clean Up Fan A Cntl Bldg Emerg Air 0-HS-311 -10A A-AUTO Clean Up Fan B Cntl Bldg Emerg 0-HS-311-108A A-AUTO Press Fan A Cntl Bldg Emerg 0-HS-311-109A A-AUTO Press Fan B
[21]
IF self contained breathing apparatus were used, THEN NOTIFY RADCON of need for replacements.
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[22]
IF paint or solvents were used on Control Building el 732 or the Control Building roof within the 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> prior to CREVS startup, THEN NOTIFY Tech Support to evaluate affect on CREVS charcoal filters and to ensure compliance with Tech Spec 4.7.7.c.
END OF TEXT
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SQN 0-50-30-2 CONTROL ROOM ISOLATION Rev: 13 0
Page 19 of 20 9.0 RECORDS Completed copies of all sections shall be transmitted to the Operations Superintendent 's Secretary.
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SQN 0-80-30-2 CONTROL ROOM ISOLATION Rev: 13 0
Page 20 of 20 SOURCE NOTES
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REQUIREMENTS STATEMENT Procedures that do not contain appropriate verification requirements will be revised.
(This item is not annotated within the procedure, since the entire procedure must meet the verification program requiremen ts)
SOURCE DOCUMENT NC0970071001 IMPLEMENTING STATEMENT C.1
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c l
r>
r'\\
I CVCS-HEAT TRACE-UHI I
1-XA-55-6C
."'\\
1 2
I 3
4 5
6 7
TS-62-239 AlB FS.{)2-139A1B LS-62*129A1B TS.{)2-78 CONTAINMENT CONTAINMENT RCS MID LOOP BORIC ACID REACTOR VOLUME LTDN HX OUTLET ISOLATION ISOLATION LEVEL LOW A
TANKA COOLANT CONTROL TANK TO DEMIN PHASE B PHASE B A
TEMP HIGH-LOW MAKEUPBA LEVEL HI-LOW TEMP HIGH TRAINA TRAIN B FLOW DEVIATION I-TIT-62-243 FS'{)2-142AIB TS.{)2-131 FS-62-82 CONTAINMENT CONTAINMENT RCS MID LOOP BORIC ACiD REACTOR VOLUME LOW PRESS LTDN ISOLATION ISOLATiON LEVEL HIGH 8
TANKC COOLANT CONTROL TANK FLOW HIGH PHASE A PHASE A 8
TEMP HIGH-LOW MAKE UP DEMIN TEMP HIGH PRESSURE HIGH TRAIN A TRAIN B WATER FLOW DEVN LS'{)2-238A1B AUTO MAKE-UP PS-62-122A1B TS-62-75 CONTAINMENT CONTAINMENT BORIC ACID BORIC ACiD START SIGNAL VOLUME LOW PRESSURE VENTILATION VENTILATION SYSTEM C
TANKA BLOCK ED CONTRO L TANK LETDOWN RELIEF ISOLATION ISOLATION AREA C
LEVEL HI-LOW PRE SS HI-LOW TEMP HIGH TRAIN A TRAIN B TEMP ERATURE LOW r--
LS-62-242A1B SPARE FS-62-93A1B TS-62-71 AUX BUILDING AUX BUILDING SI/CNTMT SPRAY D
BORIC AC ID CHARGING LINE REGENERATIVE HX ISOLATION ISOLATION FREEZE D
TANK C FLOW LETDOWN LINE TRAINA TRAIN B PROTECTION SYS LEVEL HI-LOW ABNORMAL TEMP HIGH TEMP HIILO I-SPARE SPARE LS'{)3-104 LS'{)3-176 CONTROL ROOM CONTROL ROOM FCV-74-1/2 E
CONTAINMENT CNTMT LEVEL HI ISOLATION ISOLATION TROUBLE OR E
SUMP FULL RHR RECIRC TRAIN A TRAIN B RHR PRESS I II 1
I 2
3 I
4 I
5 6
I 7
I SON I
11-AR-M6-C I
Page 2 of 44 1
Rev. 32 c..:....:..::...:..:....::=-__
33 (E-5)
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Source SER 1255 TS 31A-5A High Temp TS 31A-6A High Temp RE-90-125 Radiation K-608 Relay Operation (U-1 or U-2)
Setpoint N/A CONTROL ROOM ISOLATION TRAIN A
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Probable Causes Corrective Actions References 1.
Manual from HS-31A-7A on 1-M-6 or 2-M-6.
2.
Hi temp (> 200'F) in air inlet duct to control building pressu rization fans A-A or B-B.
3.
Safety Injection signal from U-1 or U-2.
4.
Indicating noble gas > selpoin t in duct from control building pressurization fan A-A.
[1]
ENSURE Control Room Isoiation:
REFER TO Section 8.1 of 0-SO-30-2, Emergency Mode Con trol Room Isolation. [C.4]
[2) DETERMINE cause of alarm.
[3)
EVALUATE EPIP-1, Emergency Plan Classification Matrix.
[4]
WHEN Control Room ventilation can be returned to normal operation, THEN REFER TO Section 8.2 of 0-SO-30-2, Recovery From Control Room Isolation.
45N631-2, 45B 655-06C-O, 47W6 11-3 1-1, 47W611-31-2, 47W866-4 SQN 1-AR-M6-C Page 40 of 44 1
Rev. 32
34 (E-G)
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Source SER 1262 TS 31A-5B High Temp TS 31A-6B High Temp RE-90-126 Radiation K-608 Relay Operation (U-1 or U-2)
Setpoint N/A CONTROL ROOM ISOLATION TRAIN 8
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Probable Causes Corrective Actions References 1.
Manual from HS-31A-38A on 1-M-6 or 2-M-6.
2.
Hi temp (> 200'F) in air inlet duct to control building pressurization fans A-A or B-B.
3.
Safety Injection signal from U-1 or U-2.
4.
Indicating noble gas > setpoint in duct from control building pressurization fan B-B.
[1]
ENSURE Control Room Isolation:
REFER TO Section 8.1 of 0-SO-3 0-2, Emergency Mode Control Room Isolation. [C.4]
[2]
DETERMINE cause of alarm.
[3]
EVALUATE EPIP-1, Emergency Plan Classification Matrix.
[4]
WHEN Control Room ventilation can be returned to normal operation, THEN REFER TO Section 8.2 of 0-SO-30-2, Recovery From Control Room Isolation.
45N631-2, 45B655-06C-O, 47W611-31-1, 47W6 11-31-2, 47W866-4 SQN 1-AR-M6-C Page 41 of 44 1
Rev. 32
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PREPARED/
REVISED BY:
VALIDATED BY:
APPROVED BY:
o JPM B.1.d Page 1 of 11 Rev. 6 SEQUOYAH NUCLEAR PLANT JOB PERFORMANCE MEASURE B.1.d JPM 013AP1/SIM Transfer to Hot Leg Recirculation Original Signatures on File Date!
Date!
Date/
(Operations Training Manager)
CONCURRED:
00 (Operations Representative)
Date!
o Validation not required for minor enhancements, procedure Rev changes that do not affect the JPM, or individual step changes that do not affect the flow of the JPM.
00 Operations Concurrence required for new JPMs and changes that affect the flow of the JPM (if not driven by a procedure revision).
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JPM B.1.d Page 2 of 11 Rev. 6 NUCLEAR TRAINING REVIS ION/USAGE LOG REVISION DESCRIPTION OF V
DATE PAGES PREPARED/
NUMBER REVISION AFFECTED REVISED BY :
0 Transfer from Word Perfect N
1994 I
All HJ Birch I
1 Add cover sheep and Incorporate Rev B Y
9/12 /95 All HJ Birch minor changes. Chgd performance time to based on validation.
pen/ink Chg intiating cue to since time of event to N
1125/96 4
HJ Birch match ES-1.3. Comment from student.
pen/ink Chg due to procedure revision and chg N
03/19/02 4
W R Ramsey recirc criteria from 12 hr to 5.5 hr I
2 I Incorporated penlink changes N
8/22102 4
J P Kearne v I
3
- Ufld ated to current revision of E:oi=>.
I N 9/22103 All I
MG Croteau I
I 1
4 Corrected l C. Corrected typos. 5 vice 5.5 I N 8/2104 All MG Croteau hours. -
._*_0-I 5
Corrected IC. Revised JPM to conform to Y
9/30/2005 All JJ Tricoglou latest revision of ES-1.4.
6 Minor forma t ch<3f!ges N
2113/2007 All RH Evans I
I I
I I
v-Specify if the JPM change will require another Validation (Y or N).
See cover sheet for criteria.
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JPM B.1.d Page 3 of 11 Rev. 6 SEQUOYAH NUCLEAR PLANT ROISRO JOB PERFORMANCE MEASURE Task:
Transfer to Hot Leg Recirculation JAJTA Task # : 0000790501 (RO)
KIA Ratings:
194001 A1.02 (4.1/3.9) 000011 EA1.13 (4.1/4.2) 006020 M.02 (3.9/3.8) 194001 A1.13 (4.3/4.1) 006020 A4.01 (3.7/3.6) 000011 EA1.11 (4.214.2) 000011 EA1.05 (4.3/3.9)
Task Standard:
Successfui realignment of RHR to cold leg injection and BOTH trains of safety injection to the hot leg recirculation flow path, (RHR hot leg injection valve fails to open)
Evaluation Method :
Simulator _
-"X'-----_
In-Plant
=======================================================================
Performer:
=======================================================================
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Performance Rating:
SAT Evaluator:
NAME UNSAT SIGNATURE Performance Time DATE Start Time Finish Time
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COMMENTS
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JPM B.1.d Page 4 of 11 Rev. 6 SPECIAL INSTRUCTIONS TO EVALUATOR:
1.
Critical steps identified by 'Critical Step' 2.
Sequenced steps identified by an "s" 3.
Any UNSAT requires comments 4.
Initialize the simulator in IC-93.
5.
NOTE: This JPM has been pre-shot in IC # 93. Should IC # 93 be erased or fail to perform as expected then use the following set-up instructions:
a.
Initialize the simulator to sump recirc IC - 24(if available) then, after automatic Containme nt sump swapover is initiated, perform required alignment of ECCS to Containment Sump per ES-1.3. Include the following remote functions:
i.
IRFRH14t:1 ii.
IRF SIR06 t:O) iii.
lOR ZDtHS63172A t:O(Fails IFCV*63-172] CLOSED) b.
If sump recirc IC is not available then initialize to IC 16 and complete the following setup:
i.
Insert -IMF TH01At:10 (10%LOCA on Loop#1 Hot Le9), andTrip RCPs.
ii.
After automatic containment sump swapover is initiated, perform required alignment of ECCS to Containment Sump per ES-1.3.
iii.
Place operating power on FCV-63-1 (remote function IRF RHR14 f:1) iv.
When RWST level decreasesto 8% realign Containment Spray Pump suctionto Cntmt Sumpper ES-1.3.
v.
Place operating power on FCV-63-22(remote function IRF SIR06t:O).
vi.
Insert override lOR ZDIHS63172A t:O (Fails !FCV-63-1721 CLOSED) vii.
Acknowledge and clear ALL alarms.
viii.
Freeze simulator after realignment of Cntmt Spray suction to Cntmt Sump.
c.
To keep out nuisance alarm s: insert overrides on following alarms i.
IMFAN_OV_304 t: 3 (Containment MoistureHigh)
-ii.
IMFAN_OV_420 t: 3 (Saturation Monitor) iii.
IMF AN_OV_96 t:3 (Turbine Zero Speed) d.
Ensure operator perform s the following required actions for SELF-CHECKING; i.
Reviews the intended action and expected response.
ii.
Compares the actual response to the expected response.
Validation Time: CR. 13 mins Local -;-
Tools/Equipment/Procedures Needed:
ES-1.4 "Trans!er to Hot Leg Recirculation"
References:
ES-1.4 Tille Transfer to Hot Le Recirculation READ TO OPERATOR Rev No.
5 Directions to Tra inee:
I will explain the initial conditions, and state the task to be performed. All control room steps shall be performed for this JPM. I will provide initiating cues and reports on other actions when directed by you.
When you complete the task successfully, the objective for this job performance measure will be satisfied. Ensure you indicate to me when you understand your assigned task. To indicate that you have completed your assigned task return the handout sheet I provided you.
INITIAL CONDITIONS:
1.
All ECCS components and Containment Spray pumps are aligned and taking suction from Containment sump per ES-1.3.
2.
RCS pressure is less than 180 psig. RHR spray is not in service.
3.
Both RHR pump s are in service.
4.
5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> have elapsed since the time of the event INITIATING CUES :
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1.
2.
You are the Unit 1 DATC and are to transfer to Hot Leg Recirculation per ES-1.4.
When you have completed ES-1.4 notify the US/SRO.
STEP 1:
Obtain a copy of the appropriate procedure.
SAT UNSAT STANDARD:
Operator obtains a copy of ES-1.4 and implements the actions to align to hot leg recirculation.
Start Time__
COMMENTS:
STEP 2:
[1]
DETERMINE if RHR spray should be isolated:
SAT STANDARD:
Operator verifies [FCV-72-40] and 41 are closed and goes to step 2.
UNSAT STEP 3:
[2]
CHECK RHR Pump A-A Running.
SAT STANDARD:
Operator verifies "A-A" RHR pump running by RED lights on HS (may also UNSAT check pump amps)
COMMENTS:
STEP 4:
[3)
ALIGN RHR Train A for hot leg recirculation:
[a)
CLOSE RHR Train "A" cold leg isolation valve FCV-63-93.
UNSAT Critical Step STANDARD:
Operator closes FCV-63-93 and verifies CLOSED as indicated by green position indicating light ON. This step is critical to isolate cold leg injection prior to opening the hot leg recirculation flow path.
COMMENTS:
EVALUATOR NOTE Steps 5, 6 and 7 are part of procedure steo 3.
STEP 5:
[b)
ENSURE RHR Train "6" discharge crosstie valve FCV-74-35 SAT CLOSED.
UNSAT STANDARD:
Operator ensures RHR Train "6" discharge crosstie valve CLOSED, FCV 35, as indicated by green indicating light ON.
COMMENTS:
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Job Performance Checklist:
STEP/STANDARD JPM B.1.d Page 5 of 11 Rev. 6 SAT/UNSAT
STEP 6:
[c]
OPEN RHR Train "A" discharge cros stle valve FCV-74-33.
SAT UNSAT STANDARD :
Operator opens FCV-74-33 and verifies OPEN as indicated by red position indicating light ON.
COMMENTS:
STEP 7:
[d]
OPEN FCV-63-172, RHR HL injection valve.
SAT NOTE :
FCV-63-172 fails to open. Operator must perform RNO and realign UNSAT both RHR trains to cold legs.
STANDARD :
RHR HL injection FCV-63-172 CLOSED as indicated by green position indicating light remaining ON. Operato r performs RNO. This ste p is critical to align A train RHR to the hot leg recirculation flow path.
COM MENTS:
EVALUATO R NOTE Steps 8, 9, 10 and 11 are part of procedure step 3 RNO.
STEP 8:
1)
ENSURE RHR hot leg injection valve FCV-63-172 CLOSED.
SAT STANDARD:
Operator ensures RHR hot leg injection valve FCV-63-172 CLOSED, as UNSAT indicated by green indicating light ON.
COMMENTS:
STEP 9:
2)
ENS URE RHR Train A discharge crosstie valve FCV-74-33 SAT CLOSED.
UNSAT STANDARD:
Operator closes FCV-74-33, as indicated by green indicating light ON.
This step is critical to return fl ow path to cold leg recirculation, Critical Step COMMENTS:
STEP 10:
3)
ENSURE RHR Train A cold leg isolation valve FCV-63-93 SAT OPEN.
UNSAT STANDARD :
Operator opens FCV-63-93, as indicated by red indicating light ON.
This step is critical to return flow path to cold leg recirculation.
Critical Step COMMENTS:
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Job Performan ce Checklist:
STEP/STAN DAR D JPM B.1.d Page 6 of 11 Rev. 6 SAT/UNSAT
STEP 11:
4)
IF RHR hot leg injection valve FCV-63-172 is NOT capable SAT of opening from the MCR. THEN GO TO Step 11.
UNSAT STANDARD:
Operator transitions to step 11.
COMMENTS:
STEP 12:
[11)
CHECK SI pump A-A Running, SAT STANDARD:
Operator checks "A-A" SI pump running by RED lights on HS (may also check UNSAT pump amps).
COMMENTS :
STEP 13:
[12)
ALIGN SI pump A-A for hot leg recirculation:
SAT a.
ENSURE SI Pump "A-A" STOPPED.
UNSAT STANDARD:
Operator stops SI Pump "A-A" as indicated by green indicating light ON Critical Step (HS-63-10A). This step is critical to prevent pum p damage du ring the transfer to hot leg recirculation.
COMMENTS:
STEP 14:
b.
CLOSE SI Train "A" crosstie valve FCV-63-152.
SAT STANDARD:
Operator closes Train "A" crosstie FCV-63-152 as indicated by green position UNSAT indicating light ON. This step is critical to isolate the cold leg recirculation fl ow path.
Critical Step COMMENTS:
STEP 15:
c.
WHEN FCV-63*152 Closed. THEN PERFORM the following:
SAT 1)
OPEN SI Train "A" HL injection valve FCV-63-156.
UNSAT STANDARD:
Operator opens Train "A" HL injection FCV-63-156 as indicated by red position Critical Step indicating light ON, This step Is crit ical to align flow path to hot leg recirculation.
COMMENTS:
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Job Performance Checklist:
STEP/STANDARD JPM B.1.d Page 7 of 11 Rev. 6 SAT/UNSAT
STEP 16:
2)
START Sl pump "A-A".
SAT UNSAT STANDARD:
SI Pump "A-A" is started as indicated by red indicating light ON (HS-63-10A).
This step is critical to establish flow to hot leg recirculation.
Critical Step COMMENTS:
STEP 17:
(13)
VERIFY SI Train A discharge flow on FI-63-151.
SAT UNSAT STANDARD:
Operator verifies Train A flow established as indicated on FI-63-151.
STEP 18:
(14)
CHECK Sl pump B-B Running.
SAT UNSAT STANDARD:
Operator checks "B-B" Sl pump running by RED lights on HS (may also check pump amps).
COMMENTS:
STEP 19:
[15)
ALIGN Sl pump B-B for hot leg recirculation:
SAT a.
STOP SI Pump "B-B".
UNSAT STANDARD:
Operator stops Sl Pump "B-B" as indicated by green indicating light ON Critical Step (HS-63-15A). ). This step is critical to prevent pump damage during the transfer to hot leg recirculation.
COMMENTS:
STEP 20:
b.
CLOSE SI Train "B" crosstie valve FCV-63-153.
SAT STANDARD:
Operator closes Train "B" crosstie FCV-63-153. and verifies closed as UNSAT indicated by green position indicating light ON. This step is critical to isolate the cold leg recirculation flow path.
Critical Step COMMENTS :
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l Job Performance Checklist:
STEP/STANDARD JPM B.1.d Page 8 of 11 Rev. 6 SAT/UNSAT
STEP 21:
c.
WHEN FCV-63-153 closed, THEN PERFORM the following:
SAT 1)
OPEN SI Train "B" HL injection valve FCV-63-157.
UNSAT STANDARD:
Operator opens Train "B" HL Injection FCV-63-157, and verifies open as Critical Step indicated by red position indicating light ON.
This step is cri tical to align flow path to hot leg recirculation.
COMME NTS:
STEP 22:
2)
START SI Pump "S-B".
SAT STAND ARD:
Operator starts SI Pump "S-B" ON as indicated by red indicating light ON UNSAT (HS-63*15A). This step is critical to establish flow to hot leg recirculati on.
Critical Step COMMENTS:
STEP 23:
[16]
CHECK""SI Train B discharge flow on FI-63-20.
SAT STANDARD:
Operator verifies Train "S" HL fiow established as indicated on FI-63-20.
UNSAT COMMENTS:
STEP 24:
[17]
ISOLATE SI pump flow to cold legs:
SAT a.
CHECK BOTH SI pumps ALIGNED for hot leg recirculation.
UNSAT STANDARD:
Operator verifies that both SI pumps were properly aligned in the previous steps.
COMMENTS:
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Job Performance Checklist:
STEP/STANDARD JPM B.1.d Page g of 11 Rev. 6 SAT/UNSAT
Job Performance Checklist:
STEP/STANDARD JPM B.1.d Page 10 0f1 1 Rev. 6 SAT/UNSAT
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Evaluator Note: EA-201-1 restored power to FCY-63-22 as directed by E-1 prior to transition to this procedure.
STEP 25:
b.
CHECK power AYAILABLE to FCY-63-22.
SAT NOTE :
IRF SIR06 f:O will place power on FCV*63-22.
UNSAT Cue:
When dispatched, report that power has been restored to FCV-63-22 STANDARD:
Operator dispatches AUO to restore power to FCY-63-22. SRO if power is restored to FCV-63-22.
COMMENTS:
STEP 26:
c.
CLOSE SI pump CL injection valve FCV-63-22.
SAT STANDARD:
FCV-63-22 CLOSED as indicated by green position indicating light ON.
UNSAT COMMENTS:
STEP 27:
Inform the US/SRO when Hot Leg Recirculation has been established.
SAT STANDARD:
Operator verifies Hot leg Recirc alignment and informs the US/SRO.
UNSAT COMMENTS:
Stop Time_
END OF JPM
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CANDIDATE CUE SHEET (TO BE RETURNED TO EXAMINER UPON COMPLETION OF TASK)
DIRECTION TO TRAINEE :
I will explain the initial conditions, and state the task to be performed. All control room steps shall be performed for this JPM, including any required communications.
I will provide initiating cues and reports on other actions when directed by you.
Ensure you indicate to me when you understand your assigned task. To indicate that you have completed your assigned task return the handout sheet I provided you.
INITIAL CONDITIONS:
All ECCS components and Containment Spray pumps are aligned and taking suction from Containment sump per ES-1.3.
Res pressure is.less than 180 psig. RHR spray is not in service.
Both RHR pumps are in service.
5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> have elapsed since the time of the event.
INITIATING CUES:
You are the Unit 1 OATC and are to transfer to Hot Leg Recirculation per ES-1.4.
When you have completed ES-1.4 notify the US/SRO.
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TENNESSEE VALLEY AUTHORITY SEQUOYAH NUCLEAR PLANT EOI PROGRAM MANUAL EMERGENCYSUBPROCEDURE ES-1.4 TRANSFER TO HOT LEG RECIRCULATION Revision 5 QUALITY RELATED D. A. PORTER PREPARED/PROOFREAD BY: _-='-'--"'-'--"-'-'-.=..:..".
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RESPONSIBLE ORGANIZATION: _O"'-'--P""'ER'-'!A....cT'-'.IO"'-'-'N""S W. T. LEARY APPROVED BY:
--'-'-'--'-'-=-"-'-'--
EFFECTIVE DATE:
08/01/2005 REVISION DESCRIPTION:
Revised to improve contingency actions for valve failures (PER 75660).
This procedure contains a Handout Page (2 copies).
c..
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SQN TRANSFER TO HOT LEG RECIRCULATION HANDOUT Page 1 of 1 ES-1.4 Rev. 5 STEP ACTION 12.c.
WHEN FCV-63-152 closed, THEN PERFORM the following:
1)
OPEN 81Train A hot leg injection FCV-63-156.
- 2) START 81 pump A-A.
15.c.
WHEN FCV-63-153 closed, THEN PERFORM the following :
1)
OPEN 81Train B hot leg injection FCV-63-157.
2)
START 81 pump B-B.
17.b.
(if both -Sl pumps aligned for hot leg recirculation)
RNO WHEN power available to FCV-63-22, THEN CLOSE 81 pump cold leg injection vaive FCV-63-22.
Page 1aof16
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SQN TRANSFER TO HOT LEG RECIRCULATION ES-1.4 Rev. 5 HANDOUT Page 1 of 1 ACTION 12.c.
WHEN FCV-63-152 closed,
THEN PERFORM the following:
1)
OPEN Sl Train A hot leg injection FCV-63-156.
- 2) START 81 pump A-A.
15.c.
WHEN FCV-63-153 closed,
THEN PERFORM the following:
- 1) OPEN 81 Train 8 hot leg injection FCV-63-157.
- 2) START 51 pump B-B.
17.b.
(if both 81 pumps aligned for hot leg recirculation)
RNO WHEN power available to FCV-63-22, THEN CLOSE 81 pump cold leg injection valve FCV-63-22.
STEP I
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Page 1b of 16
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saN 1.0 PURPOSE TRANSFER TO HOT LEG RECIRCULATION ES-1.4 Rev. 5 This procedure provides the necessary instructions for transferring the Safety Injection System to hot leg recirculation.
2.0 SYMPTOMS AND ENTRY CONDITIONS 2.1 ENTRY CONDITIONS E-1 Loss of Reactor or Secondary Coolant:
5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> after event initiation.
c ES-1.2 ES-1.3 Post LOCA Cooldown and Depressurization:
when TSC determines hot leg recirculation is required Transfer to RHR Containment Sump when TSC determines hot leg recirculation is required
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3.0 OPERATOR ACTIONS Page 2 of 16
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SQN TRANSFER TO HOT LEG RECIRCULATION ES-1.4 Rev. 5
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ISTEP IIACTION/EXPECTED RESPONSE 1.
DETERMINE if RHR spray should be isolated:
- a. CHECK RHR spray IN SERVICE:
Train A RHR spray valve FCV-72-40 OPEN OR Train B RHR spray valve FCV-72-41 OPEN.
- b. CHEC!Scontainment pressure less than 4 psig.
c.
ENSURE RHR spray valves CLOSED:
Train A RHR spray valve FCV-72-40 Train B RHR spray valve FCV-72-41.
IIRESPONSE NOT OBTAINED
- a. GO TO Step 2.
- b. IF Train B RHR spray valve FCV-72-41 is open, THEN GO TO Step 2.
IF Train A RHR spray valve FCV-72-40 is open, THEN GO TO Step 7.
c.
CLOSE valves locally.
Page 3 of 16
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SQN TRANSFER TO HOT LEG RECIRCULATION ES-1.4 Rev. 5
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ISTEP IIACTION/EXPECTED RESPONSE 2.
CHECK RHR pump A-A RUNNING.
IIRESPONSE NOT OBTAINED IF Train B RHR spray valve FCV-72-41 is closed, THEN GO TO Slep 8.
IF Trai n B RHR spray valve FCV-72-41 is open,
THEN GO TO Slep 11.
Page 4 of 16
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SQN TRANSFER TO HOT LEG RECIRCULATION ES-1.4 Rev. 5
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ISTEP I IACTION/EXPECTED RESPONSE 3.
ALIGN RHR Train A for hot leg recirculation:
a.
CLOSE RHR Train A coid leg isolation valve FCV-63-93.
- b. ENSURE RHR Train B discharge crosstie valve FCV-74-35 CLOSED.
c.
OPEN RHR Train A discharge crosstie valve FCV-74-33.
- d. OPEN RHR hot leg injection valve FCV-63-172.
IIRESPONSE NOT OBTAINED PERFORM the following:
- 1) ENSURE RHR hot leg injection valve FCV-63-172 CLOSED.
- 2) ENSURE RHR Train A discharge crosstie valve FCV-74-33 CLOSED.
- 3) ENSURE RHR Train A cold ieg isoiation valve FCV-63-93 OPEN.
4)
IF FCV-63-172 is NOT capable of opening from MCR, THEN GO TO Step 11.
5)
IF Train B RHR spray valve FCV-72-41 is open, THEN GO TO Step 11.
- 6) IF Train B RHR spray valve FCV-72-41 is closed,
THEN GO TO Step 7.
Page 5 of 16
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SQN TRANSFER TO HOT LEG RECIRCULATION ES*1.4 Rev. 5
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ISTEP IIACTION/EXPECTED RESPONSE 4.
VERIFY RHR hot leg injection fiow on FI-63-173.
IIRESPONSE NOT OBTAINED IF RCS pressure is less than 300 psig AND NO RHR fiow to hot legs is indicated, THEN PERFORM the following :
- a. VERIFY valves aligned as specified in Step 3.
b.
EVALUATE MCR indications:
RHR pump A-A amps FCV-74-12 RHR Pump A-A minifiow valve position.
c.
NOTIFY TSC to investigate cause WHILE continuing in this procedure.
Page 6 of 16
c SQN TRANSFER TO HOT LEG RECIRCULATION ES-1.4 Rev. 5
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ISTEP IIACTION/EXPECTED RESPONSE 5.
ENSURE RHR Train B cold leg isolation valve FCV*63*94 CLOSED.
6.
GO TO Step 11.
IIRESPONSE NOT OBTAINED IF FCV-63-94 CANNOT be closed from MCR, THEN PERFORM the following:
a.
VERIFY RHR pump A*A RUNNING and aligned for hot leg recirculation as specified in Step 3.
- b. VERIFY the following valves OPEN:
FCV-63*8, RHR pump to CCP suction FCV*63*6 or FCV*63*7, RHR pump discharge to SI pump suction c.
IF substeps a and b are met, THEN PERFORM the following:
- 1) ENSURE only one CCP RUNNING.
(Train A preferred) 2)
ENSURE idle CCP placed in PULL TO LOCK.
- 3) ENSURE only one SI pump RUNNING. (Train A preferred )
4)
ENSURE idle SI pump placed in PULL TO LOCK.
5)
ENSURE RHR pump B-B STOPPED and PLACE in PULL TO LOCK.
Page 7 of 16
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SON TRANSFER TO HOT LEG RECIRCULATION ES-1.4 Rev. 5
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ISTEP IIACTION/EXPECTED RESPONSE 7.
CHECK RHR pump B-B RUNNING.
8.
ALIGN RHR Train B for hot leg recirculation:
- a. CLOSE FCV-63-94. RHR Train B cold leg isolation valve.
- b. ENSURE RHR Train A discharge crosstie valve FCV-74-33 CLOSED.
c.
OPEN RHR Train B discharge crosstie valve FCV-74-35.
- d. OPEN FCV-63-172, RHR hot leg injection valve.
IIRESPONSE NOT OBTAINED GO TO Step 11.
PERFORM the following:
- 1) ENSURE FCV-63-172, RHR hot leg injection valve CLOSED.
- 2) ENSURE RHR Train B discharge crosstie valve FCV-74-35 CLOSED.
- 3) ENSURE RHR Train B cold leg isolation valve FCV-63-94 OPEN.
- 4) GO TO Step 11.
Page 8 of 16
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SON TRANSFER TO HOT LEG RECIRCULATION ES-1.4 Rev. 5 l
ISTEPIIACTION/EXPECTED RESPONSE 9.
VERIFY RHR hot leg injection flow on FI-63-173.
IIRESPONSE NOT OBTAINED IF RCS pressure is less than 300 psig AND NO RHR flow to hot legs is indicated, THEN PERFORM the following:
- a. VERIFY valves aligned as specified in Step 8.
b.
EVALUATE MCR indications:
RHR pump 8-8 amps FCV-74-24 RHR Pump 8-8 miniflow valve position.
c.
NOTIFY TSC to investigate cause WHILE continuing in this procedure.
Page 9 of 16
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SQN TRANSFER TO HOT LEG RECIRCULATION ES-1.4 Rev. 5 ISTEPIIACTION/EXPECTED RESPONSE 10.
ENSURE RHR Train A cold leg isolation valve FCV-63-93 CLOSED.
IIRESPONSE NOT OBTAINED IF FCV-63-93 CANNOT be closed from MCR, THEN PERFORM the following:
- a. VERIFY RHR pump B-B RUNNING and aligned for hot leg recirculation as specified in Step 8.
- b. VERIFY the following valves OPEN:
FCV-63-11, RHR discharge to SI pump suction FCV-63-6 or FCV-63-7, RHR pump discharge to SI pump suction.
c.
IF substeps a and b are met, THEN PERFORM the following:
- 1) ENSURE only one CCP RUNNING.
(Train B preferred)
- 2) ENSURE idle CCP placed in PULL TO LOCK.
- 3) ENSURE only one SI pump RUNNING. (Train B preferred)
- 4) ENSURE idle SI pump placed in PULL TO LOCK.
- 5) ENSURE RHR pump A-A STOPPED and PLACE in PULL TO LOCK.
Page 10 of 16
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SQN TRANSFER TO HOT LEG RECIRCULATION ES-1.4 Rev. 5
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ISTEPIIACTION/EXPECTED RESPONSE 11.
CHECK SI pump A-A RUNNING.
12.
ALIGN SI pump A-A for hot leg recirculation:
a.
ENSURE SI pump A-A STOPPED.
- b. CLOSE SI Train A crosstie FCV-63-152.
c.
WHEN"FCV-63-1 52 closed, THEN PERFORM the following:
- 1) OPEN SI Train A hot leg injection FCV-63-156.
- 2) START SI pump A-A.
IIRESPONSE NOT OBTAI NED GO TO Step 14.
IF SI pump A-A CANNOT be aligned for hot leg recirc, THEN PERFORM the following:
- 1) ENSURE SI pump A-A STOPPED.
- 2) ENSURE SI Train A hot leg injection FCV-63-1 56 CLOSED.
- 3) ENSURE SI Train A crosstie FCV-63-152 OPEN.
- 4) START SI pump A-A.
- 5) IF any of the following conditions met:
SI pump B-B RUNNING OR SI pump B-B is stopped AND is available for hot leg recirc THEN GO TO Step 15.
- 6) IF SI pump B-B is NOT available, THEN GO TO Step 18.
Page 11 of 16
SON TRANSFER TO HOT LEG RECIRCULATION ES-1.4 Rev. 5
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ISTEP IIACTION/EXPECTED RESPONSE 13 VERIFY 51 Train A discharge flow on FI-63-151.
14.
CHECK Slpump B-B RUNNING.
IIRESPONSE NOT OBTAINED PERFORM the following:
- a. VERIFY valves aligned as specified in Step 12.
b.
EVALUATE SI pump A-A amps.
c.
NOTIFY TSC to investigate cause WHILE continuing in this procedure.
GO TO Step 18.
Page 12 of 16
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SQN TRANSFER TO HOT LEG RECIRCULATION ES-1.4 Rev. 5
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ISTEP IIACTION/EXPECTED RESPONSE 15.
ALIGN SI punip 8-8 for hot leg recirculation:
a.
STOP SI pump 8-8.
b.
CLOSE SI Train 8 crosstie FCV-63-153.
c.
WHEN FCV-63-153 closed, THEN PERFORM the following:
- 1) OPEN SI Train 8 hot leg injection FCV-63-157.
- 2) START SI pump 8-B.
IIRESPONSE NOT OBTAINED IF SI pump 8-B CANNOT be aligned for hot leg recirc, THEN PERFORM the following:
- 1) ENSURE SI pump 8-B STOPPED.
- 2) ENSURE SI Train B hot leg injection FCV-63-157 CLOSED.
- 3) ENSURE SI Train B crosstie FCV-63-153 OPEN.
- 5) IF SI pump A-A is stopped AND is available for hot leg recirc, THEN GO TO Step 12.
___:e--
- 6) IF NO SI pump can be aligned for hot leg recirc, THEN GO TO Step 18.
- 7) GO TO Step 17.
Page 13 of 16
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SQN TRANSFER TO HOT LEG RECIRCULATION ES-1.4 Rev. 5
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l ISTEPIIACTION/EXPECTED RESPONSE 16.
VERIFY 81 Train B discharge flow on FI-63-20.
IIRESPONSE NOT OBTAINED PERFORM the following:
a.
VERIFY valves aligned as specified in Step 15.
b.
EVALUATE SI pump B-B amps.
c.
NOTIFY TSC to investigate cause WHILE continuing in this procedure.
Page 14 of 16
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SQN TRANSFER TO HOT LEG RECIRCULATION ES-1.4 Rev. 5 ISTEP IIACTION/EXPECTED RESPONSE 17.
ISOLATE Sl pump flow to cold legs:
- a. CHECK BOTH SI pumps ALIGNED for hot leg recirculation.
- b. CHECK power AVAILABLE to SI pump cold leg injection valve FCV-63-22.
- c. CLOSE Sl pump cold leg injection valve FCV-63-22.
IIRESPONSE NOT OBTAINED
- a. PERFORM the following:
- 1) IF one SI pump is aligned for hot leg recirculation, THEN ENSURE Sl pump aligned to cold legs STOPPED.
- 2) GO TO Step 18.
- b. DISPATCH personnel to restore power to Sl pump cold leg injection valve FCV-63-22, USING EA-201-1, 480 V Board Room Breaker Alignments.
WHEN power available to FCV-63-22, THEN CLOSE SI pump cold leg injection valve FCV-63-22.
RETURN TO procedure and step in effect.---.--
Page 15 of 16
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SQN TRANSFER TO HOT LEG RECIRCULATION ES-1.4 Rev. 5 ISTEPIIACTION/EXPECTED RESPONSE 18.
RETURN TO procedure and step in effect.---.--
IIRESPONSE NOT OBTAINED END Page 16 of 16
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JPM B.1.e Page 1 of 12 Rev. 7 SEQUOYAH NUCLEAR PLANT JOB PERFORMANCE MEASURE B.1.e JPM 36 RETURN PRESSURIZER RELIEF TANK TO NORMAL Original Signatures on File PREPAREDI REVISED BY:
Datel VALIDATED BY:
Datel APPROVED BY:
Datel (Operations Training Manager)
CONCURRED:
Datel (Operations Representative)
- Validation not required for minor enhancements, procedure Rev changes that do not affect the JPM. or individual step changes that do not affect the flow of the JPM.
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JPM B.1.e Page 2 of 12 Rev. 7 NUCLEAR TRAINING REVISIONIUSAGE LOG REVISION DESCRIPTION OF V
DATE PAGES PREPARED/
NUMBER REVISION AFFECTED REVISED BY:
4 Transfer from WP. Procedure change to N
8/17/94 All HJ Birch Rev. 4. Made a perform JPM, not a simulate JPM.
penlink Added dates to cover sheep.
N 10/26/95 1
HJ Birch penlink SO-68-5 Rev chg. Minor rewording of N
9/25/96 4,8 HJ Birch step 13. Add step to monitor RCDT level.
penlin k Chgd initiating cues to direct prt drain first.
N 1/9/97 4
HJ Birch To help flow thru procedures. Deleted step to reset Pri Wtr alarm. It no longer comes in.
SO-68-5 Rev chg N
11/17/97 4
HJ Birch pen/ink SO-68-5 Rev chg. Added transition step N
5/12198 4-9 HJ Birch to sect 8.2. Several step enhancements.
5 Revised steps 17 and 18, added step 19 N
9/18/98 All JP Kearney as a result of revisions to SO-68-5.
Changes did not affect the flow of the JPM. Revised JAITA task numbers.
Revised KIA ratings. Reformatted critical steps.
penlink SO-68-5 Rev chg. Correct typo in N
8/21/00 4
SR Taylor Direction to trainee pen/ink SO-68-5 Rev chg only no effect N
12113/00 4
W. R. Ramsey 6
Incorporated pen/ink changes N
8/22/02 4
J P Kearney Pen/ink Updated references & IC#
N 11/17/03 2,4 T. E. Pitchford 7
Updated references. Minor format N
3/22107 All R. H. Evans changes. Resnapped IC to allow operator to use actual simulator values.
V - Specify if the JPM change will require another Validation (Y or N).
See cover sheet for criteria.
JPM 8.1.e Page 3 of 12 Rev. 7
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SEQUOYAH NUCLEAR PLANT RO/SRO JOB PERFORMANCE MEASURE Task:
Pzr Vapor Space Accident (Return PRT to Normal)
JAITA task #: 00700401 01 0070050101 0680990101 (RO) 0070010102 (SRO)
KIA Ratings:
008AA1.08 (3.8/3.8) 007A2.01 (3.9/4.2) 007K4.01 (2.6/2.9) 007A2.02 (2.6/3.2)
Task Standard:
Pressurizer Relief Tank (PRT) parameters have been returned to within normal ranges; temperature G:. 1550 F), pressure (1.5 - 6.5 psi), and level (- 70%).
Evaluation Method:
Simulator _..t:X~_
In-Plant
=======================================================================
Performer:
NAME Start Time
===========================================~==========================
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Performance Rating : SAT _
UNSAT _
Performance Time Finish Time DATE SIGNATURE
_ /_
Evaluator:
COMMENTS
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JPM B.1.e Page 4 of 12 Rev. 7 SPECIAL INSTRUCTIONS TO EVALUATOR:
1.
Sequenced steps identified by an "s" 2.
Any UNSAT requires comments 3.
Acknowledge any associated alarms.
4.
Initialize the simulator in IC-96.
5.
NOTE: This JPM has been pre-shot in IC # 96. Should IC # 96 be erased or fail to pertorm as expected then use the following set-up instructions:
Initialize Simulator in IC: #16. ACTIVATE MF RC05 at 5% to cause PCV-68-334 to leak through.
Allow PORV Tailpipe temperature to increase and bring in the alarm, then close FCV-68-333.
ACTIVATE RF RCR04 to remove power from valve.
Open FCV-68-303 to fill the PRT to ~ 84% then close the valve. Ensure PRT temperature
~ 135 ° F.
(These will be deleted during the performance)
Ensure FCV-81-12 is open.
6.
Due to time restraints CUEs for PRT level and temperature will be given at appropriate times.
Validation Time: CR.
17 mins Local READ TO OPERATOR
- =======~===============================================================~===
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ToolslEquipmentlProcedures Needed:
1-50-68-5 Section 8.2 & 8.4.
References:
Reference 1-S0 5 Directions to Trainee:
Title Reactor Coolant S stem Rev No.
17 I will explain the initial conditions, and state the task to be pertormed. All control room steps shall be pertormed for this JPM. I will provide initiating cues and reports on other actions when directed by you. When you complete the task successfully, the objective for this job pertormance measure will be satisfied. Ensure you indicate to me when you understand your assigned task. To indicate that you have completed your assigned task return the handout sheet I provided you.
INITIAL CONDITIONS:
Unit 1 is at 100% power, steady state. Pressurizer pressure controls in automatic, Pressurizer sprays in automatic.
PORV PCV-68-334 is partially opened but the block valve has been closed and de-energized.
1A Rx Coolant Drain Tank pump is inoperable.
You are the Operator At the Controls INITIATING CUES:
The Unit Supervisor has directed you to restore the PRT to normal per the appropriate SO.
Notify the Unit Supervisor when conditions in the PRT are normal.
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Job Performance Checklist:
STEP/STANDARD JPM 8.1.e Page 5 of 12 Rev. 7 SATIU NSAT
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STEP 1.:
Obtain correct procedure to return PRT parameter(s) to normal.
SAT UNSAT STANDARD:
Operator obtains a copy of l -S0 5 Sections 8.2 & 8.4.
Start Time__
COMMENTS:
NOTE:
The operator may choose to pump the PRT level down first, start at step 6 of the JPM in that case.
NOTE:
This portion is performed using Section 6.4 of the SO.
SAT STEP 2.:
[1]
ENSURE [FCV-61 -12] OPEN.
UNSAT STANDARD:
Operator verifies that FCV-81-1 2 is open by red light on.
COMMENTS:
STEP 3.:
[2]
OPEN [1-FCV-68-303] by placing [l -HS-66-303A] to OPEN SAT position.
UNSAT STANDARD:
Operator takes hand switch HS-68-303A on M-5 to OPEN. Handswitch Critical Step indicates valve is open by red light "ON". Th is step is critical to add primary water to the PRT for cooling.
COMMENTS:
JPM B.1.e Page 6 of 12 Rev. 7
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Job Performance Checklist:
STEP/STANDARD STEP 4.:
[3]
IF PRT level increases to z 88% or PRT temperature decreases to s 1200 F THEN CLOSE [1-FCV-68-303]
SAT/UNSAT
_SAT UNSAT Critical Step
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STANDARD:
COMMENTS:
STEP 5.:
[4]
STANDARD:
COMMENTS:
Operator monitors PRT level on L1-68-300 and temperature on TI-68-309, then places FCV-68-303 in the closed position and verifies green light ON. This step is crit ical to prevent overfilling the PRT.
IF PRT level is " 88% THEN GO TO section 8.2 or 8.3 of this instruction, AND RETURN to step [1] of this section if further temperature reduction is needed.
Operator goes to section 8.2 (1A RCDT pump is inop)
If operator has already performed section 8.2 then inform him that the JPM is complete by stating "ANOTHER OPERATOR WILL TAKE OVER THE OPERATION AT THIS POINT, THIS END THE JPM".
SAT UNSAT EVALUATOR NOTE The following steps evaluate section 8.2 of this procedure. Operator will return back to section 8.4 after draininq the PRT to further cool the PRT.
STEP 6.:
[1]
VERIFY RCDT pumps aligned for service in accordance with valve check list 1-77-1.02.
When AUO is contacted, state that 18 RCDT is aligned per checklist 1-77-1.02.
SAT UNSAT
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STANDARD:
COMMENTS:
Operator checks status log to ensure no deviations exist.
(
Job Performance Checklist:
STEP/STANDARD JPM B.1.e Page 7 of 12 Rev. 7 SAT/UNSAT
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STEP 7.:
[2]
STATION AUO at panel 0-L-2.
SAT Cue:
Role play the Rad Waste AUO. State that you are at o-L*2 UNSAT panel and will stay here and wait on your instructions.
STANDARD Operator ensures an AUG is stationed at 0-L-2 panel.
COMMENTS:
STE P 8.:
[3]
IF RCDT level >20%, THEN SAT PUMP down RCDT level in accordance with Appendix C of this UNSAT Instruction.
Cue:
Role play the Rad Waste AUO. State that you are at o-L-2 panel and the level in Unit 1 RCDT is 18%.
STANDARD:
Operator checks with an AUO at 0-L-2 panel and ensures level is
< 20%
COMMENTS:
STEP 9.:
[4]
ENSURE [1-FCV-77-9] and [1*F CV-77-10] are OPEN.
SAT UNSAT STANDARD:
Operator verifies FCV-77-9 and FCV*77-10 open on panel M-15 (red lights on handswitches ON)
COMM ENTS :
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Job Performance Checklist:
STEP/STANDARD JPM B.1.e Page 8 of 12 Rev. 7 SAT/UNSAT
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STEP 10.:
[S] ENSURE [1-HS-77-6A] for RCDT Pump B is in the PULL*P-AUTO SAT position.
UNSAT Cue:
Rad waste Operator informs UO that RCDT Pump "8" is in PULL P-AUTO.
If asked, state that the level in the Unit 1 RCDT is stil/ 18%.
STANDARD :
Operator contacts Rad Waste Operator and verifies HS-77-6A for RCDT Pump B is in P-AUTO.
COMMENTS:
STEP 11.:
[6]
OPEN [1-FCV-68-30S1 Nitrogen Supply to PRT.
SAT UNSAT STANDARD :
Operator verifies FCV-68-30Sopen on panel 1 M-S (red lights on handswitches ON). This step is critical to ali gn Nit rogen to the PRT.
Critical Step COMMENTS:
STEP 12.:
[7]
PLACE [1-HS-68-310A] in the OPEN position, AND SAT VERIFY [1-FCV-68-310] OPENS UNSAT Cue:
If operator contacts the Rad Waste operator, then state to the Critical Step operator the 8 RCDT pump has started.
STANDARD:
Operator ensures FCV-68-310 open on paneI 1-M-S, red light. This step is critical to drain the PRT to normal leve l.
COMMENTS:
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Job Performance Checklist:
STEP/STANDARD JPM B.l.e Page 9 of 12 Rev. 7 SATIUNSAT
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STEP 13.:
[8]
ENSURE RCDT Pump B STARTS.
SAT UNSAT Cue:
RCDT pump B is run ning.
STANDARD:
Operator checks with Rad Waste AUO to ensure RCDT pump B starts.
COMMENTS:
STEP 14.:
[9]
IF PRT pressure drops < 1.5 psig, THEN...
SAT UNSAT STANDARD:
Operator monitors PRT pressure with PI-68-301 on 1-M-5 and closes FCV*68-310A if pressure drops to <1.5 psig.
COMMENTS:
STEP 15.:
[10] IF at any time while pumping down the PRT the RCDT level approaches SAT 50%, THEN..
UNSAT Cue:
When AUO conta cted, State: I will monitor RCDT level, Stop RCDT pump and notify you to close FCV*68*310 If RCDT approaches 50%.
STANDARD:
Operator notifies AUO of this step.
COMMENTS:
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Job Performance Checklist:
STEP/STANDARD JPM B.1.e Page 10 of 12 Rev. 7 SATIUNSAT
(
STEP 16.:
[11] IF returning from Appendix C, THEN SAT UNSAT STANDARD:
Operator N/A's step.
COMMENTS:
STEP 17.:
[12] WHEN PRT level reaches desired level, THEN SAT STOP "B" RCDT.
UNSAT Cue:
When the operator begins to monitor level on L/-68-300, tell the Critical Step operator that "PRT level has decreased to 70%",
Cue:
When operator requests AUO to stop RCOT pump 18, Tell him "RCOT pump 18 is stopped and HS is in Pull-P-Auto".
STANDARD:
Operator verifies level, and has the Rad Waste Operator STOP RCDT Pump 1B and place HS in Pull-P-Auto. This step is critical to prevent pumping down PRT to below normal level of 70%. (maintained between 55 and 88%).
COMMENTS:
STEP 18.:
[13] CLOSE [1-FCV-68-31OJ.
SAT UNSAT STANDARD:
Operator closes with HS-68-310A and verifies closed on panel 1-M-5 (green lights on handswitches ON). This step Is critical to return Critical Step system to normal alignment.
COMMENTS:
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Job Performance Checklist:
STEP/STANDARD JPM B.1.e Page 11 of 12 Rev. 7 SAT/UNSAT
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STEP 19.:
[14] PLACE [1-HS-77-6Al RCDT pump B in PULL-P*AUTO position SAT at 0-L-2 panel.
UNSAT CUE:
When operator requests AUO to place the HS for RCDT pump 1B, Tell him "RCDT pump 1B HS is in Pull-P-Auto".
STANDARD:
Operator has the Rad Waste Operator place HS in Pull-P*Auto.
COMMENTS:
STEP 20.:
[15] CLOSE [1-FCV*68-305].
SAT UNSAT STANDARD:
Operator closes with HS-68-305A and verifies closed on panei 1-M-5 (green lights on handswitches ON).
COMMENTS:
NOTE:
I! operator performed section 8.2 first, then return to step 1 of the JPM to evaluate section 8.4 to cool the PRT.
I! operator has already performed section 8.4 then inform him that the JPM is complete by stating "ANOTHER OPERATOR WILL TAKE OVER THE OPERATION AT THIS POINT, THIS END THE JPM".
End of JPM
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CANDIDATE CUE SHEET (TO BE RETURNED TO EXAMINER UPON COMPLETION OF TASK)
DIRECTION TO TRAINEE:
I will explain the initial conditions, and state the task to be performed. All control room steps shall be performed for this JPM, including any required communications. I will provide initiating cues and reports on other actions when directed by you. Ensure you indicate to me when you understand your assigned task. To indicate that you have completed your assigned task return the handout sheet I provided you.
INITIAL CONDITIONS:
Unit 1 is at 100% power, steady state. Pressurizer pressure controls in automatic.
Pressurizer sprays in automatic.
PORV PCV-68-334 is partially opened but the block valve has been closed and de-energized.
1A Rx Coolant Drain Tank pump is inoperable.
You are the Operator At the Controls INITIATING CUES:
The Unit Supervisor has directed you to restore the PRT to normal per the appropriate SO.
Notify the Unit Supervisor when conditions in the PRT are normal.
c
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TENNESSEE VALLEY AUTHORITY SEQUOYAH NUCLEAR PLANT SYSTEM OPERATING INSTRUCTION 1-S0-68-5 PRESSURIZER RELIEF TANK Revision 17 QUALITY RELATED PREPARED/PROOFREAD BY:
JUDY VARNER RESPONSIBLE ORGANIZATION:
OPERATIONS APPROVED BY:
D. A. PORTER EFFECTIVE DATE:
05/09/2006 LEVEL OF USE:
CONTINUOUS USE REVISION DESCRIPTION:
Revised to incorporate PCF 007. Added steps in section 8.9 to allow purging PRT with either Hydrogen or Nitrogen on VCT.
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SQN 1-50-68-5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 2 of 35 Section Title TABLE OF CONTENTS Page 1 of 2 Page 1.0 1.1 1.2 2.0 2.1 2.2 3.0 4.0
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5.0 6.0 7.0 8.0 8.1 8.2 8.3 8.4 8.5 8.6 8.7 8.8 8.9 c..
INTRODUCTION 4
Purpose....................................................................................................................
4 Scope 4
REFERENCES...............................................................................................................
4 Performance References.........................................................................................
4 Developmental References 5
PRECAUTIONS AND LIMITATIONS..............................................................................
5 PREREQUISITE ACTIONS 6
STARTUP/STANDBY READINESS 7
NORMAL OPERAnON 8
SHUTDOWN 8
INFREQUENT OPERATION 9
Increasing PRT Level...............................................................................................
9 Reducing PRT Level Using B RCDT Pump 10 Reducing PRT Level Using A RCDT Pump..
13 Reducing the Temperature of the PRT...........................
16 Increasing the Pressure of the PRT 17 Reducing the Pressure of the PRT 18 Gravity Draining PRT to the Containment Floor and Equipment Drain Sump (RBF & EDS) 19 Reducing the O2 Concentration in the PRT in Mode 5 or 6 22 Purging the PRT 23
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SON 1-S0-68-5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 3 of 35 Section Ti tle TABLE OF CONTENTS Page 2 of 2 Page 9.0 RECORDS 25 APPENDIX A:
PRT O2 CONCENTRATION REDUCTION USING RCDT PUMP B 26 APPENDIX B:
PRT O2 CONCENTRATION REDUCTION USING RCDT PUMP A 30 APPENDIX C:
REDUCING LEVEL IN RCDT 34 SOURCE NOTES 35 ATTAC HMENT 1:
POWER CHECKLIST 1-68-5.01 ATTACHMENT 2:
VALVE CHECKLIST 1-68-5.02
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SQN 1-50-68-5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 4 of 35
1.0 INTRODUCTION
1.1 Purpose To provide instructions for the operation of the Pressurizer Relief Tank (PRT).
1.2 Scope A. Placing the PRT in service.
B. Increasing the PRT level.
C. Decreasi ng the PRT level.
D. Reducing the temperature of the PRT.
E. Increasing the pressure of the PRT.
F. Reducing the pressure of the PRT.
G. Gravity draining PRT to the Containment Floor and Equipment Drain Sump (RBF & EDS).
H. Reducing the 0, Concentration in the PRT in Mode 5 or 6.
I.
Purging the PRT in Modes 1 thru 4.
2.0 REFERENCES
2.1 Performance References None
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SQN 1-S0-68-5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 5 of 35 2.2 Developmental References A
SOI-68.1, Reactor Coolant System B. 0-MI-MXX-068-006.0, Venting of Pressurizer, Pressurizer Relief Tank, and Reactor Head C. SPP-10.3, Verification Program D. TVA Drawing
- 1. 47W813-1
- 2. 47W819-1
- 3. 47W830-1
- 1. Section 5.5 3.0 PRECAUTIONS AND LIMITATIONS A
During normal operation, PRT water temperature should not exceed 120'F.
B. Maintaining 3 to 6 psig N, gas blanket on the PRT will prevent the formation of explosive hydrogen-oxygen mixtures.
C. The PRT concentration of oxygen shall be limited to less than or equal to 2% by volume whenever the hydrogen concentration exceeds 4% by volume.
D. Over filling the PRT to solid water condition during oxygen reduction per Section 8.8 may result in failure of the PRT rupture disc.
E. The PRT pressure should be maintained < 7.5 psig during normal operation. (Except during the performance of section 8.9).
F. The PRT rupture discs are rated at 85 psig.
G. The level in the PRT should be maintained at 70%. If the level increases to 88%, then decreasing level to 70% is necessary. If the level decreases to 55%, then increasing level to 70% is needed when the PRT is required to be operable.
H. Completely draining the PRT may result in gas binding the RCDT pumps.
I.
Water intrusion into the waste gas vent header is possible during PRT venting operations with PRT level high. This could affect RCP sealleakoff flows and the vent capability of tanks which vent to waste gas vent header.
J.
PRT level indications or alarms are not available in the Aux Control Room, thus PRT level manipulations and feed & bleed processes are unavailable.
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SQN 1-50-68-5 PRESSURIZER RELIEF TANK Rev: 17 1
Page 6 of 35 Date 4.0 PREREQUISITE ACTIONS NOTE
[1]
[2]
[3]
[4]
[5]
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[6]
[7]
[8]
[9]
Throughout this Instruction, where an IFfTHEN statement exists, the step should be N/A if condition does not exist.
ENSURE Instruction to be used is a copy of the effective version.
ENSURE Precautions and Limitations, Section 3.0 have been reviewed.
ENSURE Attachment 1, Power Checklist 1-68-5.01 is complete.
ENSURE Attach ment 2, Valve Checklist 1-68-5.02 is comp lete.
VERIFY primary water is available to fill and cool the PRT (N/A if primary water will not be used).
VERIFY Waste Disposal System is available to receive liquid from PRT.
Print Name Initials
[10]
INDICATE below which performance section of this Instruction will be used and the reason for this performance:
o 5.0 STARTUP/STANDBY READINESS o 8.0 INFREQUENT OPERATION REASON:
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c SQN 1-S0-68-5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 7 of 35 Oate 5.0 STARTUP/STANDBY READINESS
[1]
VERIFY PRT has normal operating level of - 70%.
[2]
IF PRT level needs adjusting, THEN REFER TO Section 8.1, 8.2, or 8.3, AND ADJUST level as necessary.
[3]
IF PRT pressure needs adjusting, THEN REFER TO Section 8.5 or 8.6, AND ADJUST pressure as necessary.
END OF TEXT
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1-50*68*5 SQN PRESSURIZER RELIEF TANK Rev: 17 1
Page 8 of 35 6.0 NORMAL OPERATION None.
7.0 SHUTDOWN None.
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SQN 1-S0-68-5 PRESSURIZER RELIEF TANK Rev: 17 1
Page 9 of 35 Date 8.0 INFREQUENT OPERATION 8.1 Increasing PRT Level
[1)
ENSURE a primary water pump is running.
[2)
ENSURE [1-FCV-81-12) primary water containment isolation valve is OPEN.
[3)
OPEN [1-FCV-68-303) PRT makeup valve.
[4)
MAINTAIN PRT pressure between 3 and 6 psig by operating
[1-PCV-301) PRT vent valve.
NOTE Normal PRT level is approximately 70%.
[5)
WHEN PRT level increases to desired level (not to exceed 88%),
THEN CLOSE [1-FCV-68-303].
1st IV
[6)
ENSURE [1-PCV-68-301) PRT vent valve CLOSED.
1st IV END OF TEXT
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SON 1-50-68-5 PRESSURIZER RELIEF TANK Rev: 17 1
Page 10 of 35 Date 8.2 Reducing PRT Level Using B RCDT Pump CAUTION 1 CAUTION 2 NOTE Pump damage could occur if suction is lost while pumping water> 175°F.
RCDT pump 1B will NOT automatically stop on low level in PRT OR closure of FCV-68-310.
RCDT pump B will Auto start when 1-FCV-68-310, PRT drain to RCDT opens.
(
\\...
[1]
VERIFY RCDT pumps aligned for service in accordance with Valve Checklist 1-77-1.02.
NOTE An AUO at panel 0-L-2 in communication with a MCR UO is needed to perform this Instruction.
[2]
STATION an AUO at panel 0-L-2.
[3]
IF RCDT level> 20%, THEN PUMP down RCDT level in accordance with Appendix C of this Instruction.
[4]
ENSURE [1-FCV-77-9] and [1-FCV-77-10] RCDT pump outlet isolation vaives are OPEN.
[5]
ENSURE [1-HS-77-6A] for RCDT pump B is in the PULL-P-AUTO position.
[6]
OPEN [1-FCV-68-305] Nitrogen Supply to PRT.
[7]
PLACE [1-HS-68-310A] in the OPEN position, AND VERIFY [1-FCV-68-310] OPENS.
[8]
ENSURE RCDT pump B STARTS.
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SQN 1*S0*68*5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 12 of 35 Date 8.2 Reducing PRT Level Using B RCDT Pump (Continued)
[11]
IF returninq from Appendix C, THEN PERFORM the following:
[a]
PLACE [1*HS*77*6A] RCDT pump 8 in PULL-P-AUTO position.
[b]
OPEN [1-FCV-68*310l
[12]
WHEN PRT reaches desired level, THEN STOP '8' RCDT pump.
[13]
CLOSE [1-FCV-68-310l 1st IV
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[14]
PLAC E [1-HS-77-6A] RCDT pump '8' in PULL-P*AUTO position at O-L-2 panel.
1st IV
[15]
CLOSE [1-FCV-68-3051 Nitrogen Supply to PRT.
1st IV END OF TEXT c..
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SQN 1-50-68-5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 13 of 35 Date 8.3 Reducing PRT Level Using A RCDT Pump CAUTION 1 CAUTION 2 NOTE Pump damage could occur if suction is lost while pumping water> 175'F.
RCDT pump 1A will NOT automatically stop on low level in PRT OR closure of FCV-68-310.
RCDT pump A operates automatically with 1-LCV-77-415 from the RCDT only.
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[1]
VERIFY RCDT pumps aligned for service in accordance with Valve Checklist 1-77-1.02.
[2]
IF R.cDT level > 20%, THEN PUMP down RCDT level in accordance with Appendix C of this Instruction.
NOTE Communications will have to be established between MCR.
Radwaste (0-L-2). and switchgear for "A" RCDT pump.
[3]
STATION an AUO at panel 0-L-2.
[4]
STATION an AUO at Switchgear for "A" RCDT pump.
[5]
ENSURE [1-FCV-77-9] and [1-FCV-77-10] RCDT pump outlet isolation valves are OPEN.
[6]
OPEN [1-FCV-68-305] Nitrogen Supply to PRT.
[7]
PLACE [1-HS-77-6A] RCDT Pump B in PULL-tO-LOCK.
[8]
PLACE transfer switch XS-77-4 on 1A-A Reactor Vent Board compartment 2C to AUX position.
[9]
PLACE [1-HS-68-310A] in the OPEN position. AND VERIFY [1-FCV-68-310] OPENS.
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SQN 1-S0-68-5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 14 of 35 Date 8.3 Reducing PRT Level Using A RCDT Pump (Continued)
[10]
PLACE [1-HS-77-4D] RCDT Pump A, in the START position (at switchgear).
[11]
IF PRT pressure drops < 1.5 psig, THEN STOP RCDT pump A.
[12]
WHEN PRT pressure returns to normal, THEN PLACE [1-HS-77-4D] RCDT pump A to the START position (at switchgear).
CAUTION The RCDT level is to be maintained < 50% while 1-FCV-68-310 is open to prevent inadvertent opening of 1-LCV-77-415 which could cause overfilling of RCDT from PRT.
[13]
IF at any time while pumping down the PRT the RCDT level approaches 50%, THEN PERFORM the following before continuing the PRT level reduction:
[a)
PLACE [1-HS-77-4D] RCDT pump A in the STOP position.
[b)
CLOSE [1-FCV-68-310l
[c]
OPEN [1-LCV-77-415].
[d)
START RCDT pump "A" with 1-HS-77-4D, AND REDUCE RCDT level to approximately 20%.
[e]
WHEN RCDT level is approximately 20%,
THEN STOP RCDT pump "A" with 1-HS-77-4D.
[f]
ENSURE [1-LCV-77-415] closed.
(
SON 1-50*68*5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 15 of 35 Date 8.3 Reducing PRT Level Using A RCDT Pump (Continued)
[14]
IF resuming PRT level reduction, THEN PERFORM the following:
[a]
OPEN [1*FCV*68-310].
[b]
PLACE [1*HS*77-4D] RCDT pump A in START.
[15]
WHEN PRT reaches desired level, THEN
[a]
STOP RCDT pump A
[b] -
PLACE in PULL*P*AUTO 1st IV
[16]
CLOSE [1-FCV-68*310].
1st IV
[17]PLACE transfer switch XS*77*4 to NORMAL position, tst IV AND VERIFY wire seal reinstalled.
1st IV
[18]
IF desired, THEN PLACE [1*HS-77-6A] RCDT Pump B in PULL*P*AUTO.
1st IV
[19]
CLOSE [1*FCV*68*305] Nitrogen Supply to PRT.
1st IV END OF TEXT
(
(
SQN 1-S0-68-5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 16 of 35 Date NOTE May need an extra copy of this Instruction.
8.4 Reducing the Temperature of the PRT
[1]
ENSURE [1-FCV-81-12] OPEN.
[2]
OPEN [1-FCV-68-3031 by placing
[1-HS-68-303Al to OPEN position.
[3]
IF PRT level increases to ~ 88% or PRT temperature decreases g 120°F, THEN CLOSE [1-FCV-68-303].
1st IV
[4]
IF PRT level is ~ 88%, THEN GO TO section 8.2 or 8.3 of this Instruction, AND RETURN to step [1] of this section if further temperature reduction is needed.
END OF TEXT
(
SON 1-50-68-5 PRESSURIZER RELIEF TANK Rev: 17 1
Page 17 of 35 Date 8.5 Increasing the Pressure of the PRT
[1]
OPEN [1-FCV-68-305] Nitrogen Supply to PRT.
[2]
WHEN [1-PI-68-301] is between 3 to 6 psig, THEN
(
CLOSE [1-FCV-68-305] Nitrogen Supply to PRT.
END OF TEXT 1st IV
(
SQN 1-50-68-5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 18 of 35 Date 8.6 Reducing the Pressure of the PRT
[1)
STATION AUO at panel 0-L-2 to monitor vent header pressure and start Waste Gas Compressor (WGC) if necessary.
[2)
OPEN [1-PCV*68*301].
[3)
WHEN [1-PI-68*301) is between 3 to 6 psig.
THEN CLOSE [1-PCV-68-301].
1st IV NOTE:
Step [4) may be repeated if it is suspected that water remains in waste gas vent header and additional venting is necessary.
(
(
[4)
IF the PRT pressure will not drop while venting or water is suspected to be in waste gas vent header, THEN PERFORM the following:
[a)
NOTIFY U-1 and U-2 SRO that vent header is about to be vented and to monitor AS area radiation monitors and 0-RM-90-101, AS vent monitor.
[b)
OPEN [O-LCV*77-403), Loop Dr LCV (653' U1 pipe chase), for 15 seconds, THEN CLOSE.
[c)
OPEN [O-LCV-77-404). Loop Dr LCV (653' U1 pipe chase), for 15 seconds, THEN CLOSE.
[d)
OPEN [O*LCV-77-405], Loop Dr LCV (669' U2 pipe chase) for 15 seconds, THEN CLOSE.
END OF TEXT o
(
SQN 1-S0-68-5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 19 of 35 Date 8.7 Gravity Draining PRT to the Containment Floor and Equipment Drain Sump (RBF & EDS)
CAUTION Completely draining PRT may result in gas binding RCDT pumps.
[1]
OBTAIN permission from US to drain PRT to RBF & EDS.
[2]
ENSURE the following RCDT control switches in the PULL-TO-LOCK position:
A. [1-HS-77-4A] RCDT PUMP 1A.
B. [1-HS-77-6A] RCDT PUMP 1B.
[3]
PLACE [1-HS-77-415] RCDT pump suction in the CLOSE position AND ENSURE [1-LCV-77-415] remains CLOSED.
(switch is spring return to auto)
[4]
IF both of the following conditions exist:
Pressurizer PORVs OPEN, RCS is vented to atmosphere, THEN MARK Steps [5] and [6] as N/A.
NOTE:
If Step [4] is N/A, then either Step [5] or Step [6] must be performed to prevent drawing a vacuum in PRT while draining.
[5]
IF all of the following conditions exist:
Pressurizer PORVs are CLOSED, PRT is NOT vented to atmosphere, It is desired to use Nitrogen as cover gas, THEN OPEN [1-FCV-68-305] Nitrogen Supply to PRT.
(
SQN 1-S0-68-5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 20 of 35 Date 8.7 Gravity Draining PRT to the Containment Floor and Equipment Drain Sump (RBF & EDS) (Continued)
[6]
IF all of the following conditions exist:
PRT has been purged and vented to atmosphere, PRT manual vent to be used as a vent path, 1-68-573 flange is removed, THEN ENSURE [1-68-573] PRT Manual Vent OPEN.
(7]
OPEN [1-FCV-68-310] PRT to RCDT suction header.
[8]
OPEN [1-FCV-77-31 RCDT to RBF & EDS.
[9]
IF high level alarm Illuminates on RCDT during this operation, THEN
[a]
CLOSE [1-FCV-68-310]
AND DRAIN RCDT to -20% level.
[b]
WHEN RCDT level is in the normal range, THEN ENSURE [1.LCV-77-415] is CLOSED AND OPEN [1-FCV*68-3101 to resume PRT draining.
[10]
WHEN it is no longer desired to transfer PRT to RBF & EDS, THEN CLOSE [1-FCV-77-3].
1st IV
[11]
CLOSE [1-FCV-68-310].
1st IV
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SQN 1-S0-68-5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 21 of 35 Date 8.7 Gravity Draining PRT to the Containment Floor and Equipment Drain Sump (RBF & EDS) (Continued)
[12]
ENSURE [1-FCV-68-305] Nitrogen Supply to PRT is CLOSED.
1st IV
[13]
IF manual vent used as vent path is step [6],
THEN ENSURE [1-68-573] PRT Manual Vent CLOSED.
1st IV NOTE RCDT suction piping may be gas bound if PRT was drained completely.
(
[14]
IF PRT was drained completely, THEN EVALUATE need to prime the RCDT pumps using 1-S0-77-1, Reactor Coolant Drain Tank.
(,
[15]
ENSURE [1-HS-77-415] RCDT pump suction in AUTO.
[16]
PLACE the following control switches to the PULL-P-AUTO position.
A.
[1-HS-77-4A] RCDT pump 1A.
B.
[1-HS-77-6A] ReDT pump 1B.
END OF TEXT 1st IV 1st IV 1st IV
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SQN 1-S0-68-5 PRESSURIZER RELIEF TANK Rev: 17 1
Page 22 of 35
- Date, NOTE 3 NOTE 4 8.8 Reducing the 0, Concentration in the PRT in Mode 5 or 6 NOTE 1 Local AUO assistance will be needed to perform this Instruction.
NOTE 2 Several copies of Appendices A and B may be needed to complete this Instruction.
This Instruction can only be performed in modes 5 and 6.
Step [1] may be NA'd if flange has been previously removed and hose installed.
[1]
REQUEST Mechanical Maintenance to REMOVE blind flange from [1-68-573] and to INSTALL a temporary hose.
[2]
IF reducing PRT oxygen concentration utilizing RCDT pump "B", THEN PERFORM Appendix A to reduce the PRT 0, concentration.
(
[3]
IF reducing PRT oxygen concentration utilizing RCDT pump "A", THEN PERFORM Appendix B to reduce the PRT 0, concentration.
[4]
ENSURE [1-PCV-68-304] PRT N2 pressure regulator maintains - 6.5 psig.
[5]
CLOSE [1-FCV-68-305] nitrogen inlet isolation valve.
1st IV
[6]
ENSURE [1-FCV-68-308] gas analyzer FCV CLOSED.
1st IV
[7]
ENSURE [1-68-573] PRT vent is CLOSED.
[8]
REQUEST Mechanical Maintenance to remove hose from
[1-68-573], AND INSTALL blind flange.
[9]
ENSURE [1-68-573] PRT vent to atmosphere CLOSED AND Blind Flange INSTALLED.
1st IV C.
END OF TEXT
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SQN 1-S0-68-5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 23 of 35 8.9 Purging the PRT CAUTION NOTE 1 NOTE 2 NOTE 3 NOTE 4 NOTES Date If PRT temperature is >130°F (1-TI-68-309), this procedure can NOT be performed.
This section purges the PRT by increasing pressure to - 15 psig then decreasing pressure to - 5 psig. Number of times pressure will be increased and decreased will be determined by Chern Lab.
0, concentration for inservice Waste Gas Decay Tank should be monitored during this process.
When PRT is vented to the RCDT, pressure will increase to near PRT pressure.
Two or three gas decay tanks will be required for this purge.
VCT pressure must be maintained :2: 25 psig when purging PRT.
(
[1]
IF desired to raise PRT level to just below high level alarm, THEN PERFORM Section 8.1.
[2]
IF hydrogen aligned to VCT, THEN ADJUST [1-PCV-62-120] VCT Hydrogen Blanket, to malntaln z 25 psig. (on top ofVCT room)
[3]
IF Nitrogen aligned to VCT, THEN ADJUST [1*PCV*62-119] VCT Nitrogen Blanket, to rnaintain z 25 psig. (on top of VCT room)
[4]
ADJUST [1*PCV-68*304] setpoint to - 15 psig.
(located in 690 pipe chase northeast corner)
NOTE 1-XA-55*5A window D1 is an expected alarm when this process increases pressure > 8 psig.
[5]
OPEN [1*FCV*68*305] Nitrogen Supply to PRT.
[6]
WHEN [1*PI*68*301] is - 15 psig, THEN
(
CLOSE [1*FCV*68*305j Nitrogen Supply to PRT.
(
SQN 1-50-68-5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 24 of 35 Date 8.9 Purging the PRT (Continued)
[7]
STATION AUO at panel 0-L-2 to MONITOR Vent Header pressure D.
NOTE 1-XA-55-5B window A2, B2, C2, & 02 are expected alarm when PRT is vented to the vent header due to increased pressure on RCDT.
[8]
OPERATE Waste Gas Compressor as necessary.
D
[9]
OPEN [1-PCV-68-301], PRT Vent header PCV.
[10]
WHEN [1-PI*68-301] is - 5 psig, THEN CLOSE [1-PCV-68-301), PRT Vent header PCV.
(
[11]
REPEAT steps [5] thru [10] as directed by Chem Lab.
[12]
VERIFY [1-PCV-68-305] CLOSED, Nitrogen to PRT.
IV
[13]
VERIFY [1-PCV-68-301] CLOSED, PRT Vent header PCV.
IV
[14]
RETURN [1-PCV-68-304] setpoint to - 6.5 psig (located in 690 pipe chase northeast corner) 1st cv
[15]
IF using Hydrogen, THEN ADJUST [1-PCV-62-120] VCT Hydrogen Blanket, to maintain approximately 17-20 psig. (on top of VCT room)
[16]
IF using Nitrogen, THEN ADJUST [1-PCV-62-119] VCT Nitrogen Blanket, to maintain approximately 17-20 psig. (on top of VCT room)
[17]
NOTIFY Chem Lab that PRT purge has been completed.
C END OF TEXT
(
SQN 1-50-68-5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 25 of 35 9.0 RECORDS Completed copies of all sections, Appendices, and attachments shall be transmitted to the Operations Superintendent's Secretary.
(
SQN 1-S0-68-5 PRESSURIZER RELIEF TANK Rev: 17 1
Page 26 of 35 APPENDIX A Page 1 of4
- Date, PRT 0, CONCENTRATION REDUCTION USING RCDT PUMP B CAUTION Over filling the PRT to solid water condition may result in fai lure of the PRT rupture disc.
[1]
ENSURE [1-FCV-68-305] nitrogen inlet isolation valve is CLOSED.
[2]
ENSURE [1-PCV-68-301] PRT vent valve to vent header is CLOSED.
[3]
ENSURE [1-68-573] PRT vent to atmosphere is OPEN.
[4]
OPEN [1-FCV-6S*303] primary water supply to PRT.
[5]
VERIFY [1-L1-6S-300] PRT level indicator on 1-M-4 shows increase.
[6]
VERIFY PRT high level alarm comes in at - 88%.
[7]
WHEN water level reaches 98%, as indicated on
[1-L1-68-300], THEN CLOSE [1.FCV-68-303].
tst IV
[S]
CLOSE [1-6S-573] PRT vent to atmosphere.
[9]
OPEN [1-FCV-6S-305] nitrogen inlet isolation valve.
[10]
VERIFY RCDT pumps aligned for service in accordance with Valve Checklist 1-77-1.02.
NOTE An AUO at panel 0-L-2 in communication with a MCR UO is needed to perform this Instruction.
[11]
STATION an AUO at panel 0-L-2.
[12]
ENSURE [1-FCV-77-9] and [1-FCV 10] RCDT pump outlet isolation valves are OPEN.
\\..
(
SQN 1-50-68-5 PRESSURIZER RELIEF TANK Rev: 17 1
Page 27 of 35 APPENDIX A Page 2 of 4 Date.
[13]
IF filling and venting of RCDT suction line or pumps IS NOT required, THEN GO TO step [20] and N/A steps [14] through [19].
[14]
PLACE control switches in the PULL-TO-LOCK position:,
A.
[1-HS-77-4A] RCDT pump 1A.
B.
[1-HS-77-6A] RCDT pump 1B.
NOTE Steps [15] through [19] fill and vent the RCDT pump suction header.
Step [20] starts the O2 concentration reduction.
[15]
PLACE [1-HS-68-31 OA] in the OPEN position, AND VERIFY [1-FCV-68-310] opens.
NOTE Opening 1-FCV-77-3 allows suction header to be vented to Cntmt Floor & Equip. Drain Sump.
[16]
OPEN [1-FCV-77-3] RCDT to RBF&EDS isolation.
[17]
WHEN a drop in PRT level is observed, THEN CLOSE [1-FCV-77-31
[18]
IF RCDT or suction line from RCDT has been drained and is ready to be filled, THEN
[a] OPEN [1-LCV-77-415] while MONITORING RCDT and PRT levels.
[b] WHEN a drop in PRT level is observed and/or ReDT level increases or is at desired level, THEN CLOSE [1-LCV-77-415].
[19]
CLOSE [1-FCV-68-3101
(
SON 1-50-68-5 PRESSURIZER RELIEF TANK Rev: 17 1
Page 28 of 35 APPENDIX A Page 30f4 CAUTION 1 CAUTION 2 NOTE Date Pump damage could occur if suction is lost while pumping water> 175°F.
RCDT pump 1A will NOT automatically stop on low level in PRT OR closure of FCV-68-310.
RCDT Pump B will Auto start when 1-FCV-68-310, PRT drain to RCDT opens.
[20]
ENSURE control switches are in the P-AUTO position:
A.
[1-HS-77-4A] RCDT pump 1A.
1st IV B.
[1-HS-77-6A] RCDT pump 1B.
1st IV
[21]
PLACE [1-HS-68-310A] in the OPEN position, AND VERIFY [1-FCV-68-310] opens.
[22]
ENSURE RCDT Pump B STARTS.
[23]
IF PRT pressure drops < 1.5 psig, THEN COMPLETE the following:
[a]
STOP 'B' RCDT pump at O-L-2, AND CLOSE [1-FCV-68-310].
[b]
WHEN PRT pressure returns to normal, THEN OPEN [1-FCV-68-310j, AND VERIFY RCDT pump B STARTS.
(
SQN 1-S0-68-5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 29 of 35 APPENDIX A Page 4 of 4 Date
[24]
WHEN PRT reaches desired level, THEN STOP RCDT Pump B.
[25]
CLOSE [1-FCV-68-3101 1st IV
[26]
DIRECT Chem Lab to obtain grab sample of the PRT atmosphere for oxygen concentration.
[27]
IF PRT 0, concentration is > 2% by volume, THEN RET!JRN to step [1] of this Appendi x.
(
(
[28]
IF PRT 0, concentration is < 2% by volume, THEN RETURN to step [4] Section 8.8 of this Instruction.
END OF TEXT
(
SQN 1-S0-6S-5 PRESSURIZER RELIEF TANK Rev: 17 1
Page 30 of 35 APPENDIX B Page 1 of 4 Oate PRT 0, CONCENTRATION REDUCTION USING RCDT PUMP A CAUTION Over filling the PRT to solid water condition may result in failure of the PRT rupture disc.
[1]
ENSURE [1-FCV-6S-305] nitrogen inlet isolation valve is CLOSED.
[2]
ENSURE [1-PCV*6S-301] PRT vent valve to vent header is CLOSED.
[3]
ENSURE [1-6S-573] PRT vent to atmosphere is OPEN.
[4]
OPEN [1-FCV-6S-303] primary water supply to PRT.
(
[5]
VERIFY [1-L1-6S-300] PRT level indicator on 1-M-4 shows increase.
[6]
VERIFY PRT high level alarm comes in at - 88%.
[7]
WHEN water level reaches 98%, as indicated on
[1-L1-6S-300], THEN CLOSE [1-FCV-6S-303].
1st IV
[S]
CLOSE [1-6S-573] PRT vent to atmosphere.
[9]
OPEN [1-FCV-68-305] nitrogen inlet isolation valve.
[10]
VERIFY RCOT pumps aligned for service in accordance with Valve Checklist 1-77-1.02.
NOTE An AUO at panel 0-L-2 in communication with a MCR UO is needed to perform this Instruction.
[11]
STATION an AUO at panel O-L-2.
(
[12]
ENSURE [1-FCV-77-9] and [1-FCV-77-10] RCOT pump outlet isolation valves are OPEN.
(
SQN 1-50-68-5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 31 of 35 APPENDIX B Page 2 of 4 Date
[13]
IF filling and venting of RCDT suction line or pumps IS NOT required, THEN GO TO step [20] and N/A steps [14] through [19].
[14]
PLACE control switches in the PULL-TO-LOCK position:,
A.
[1-HS-77-4A] RCDT pump 1A.
B.
[1-HS-77-6A] RCDT pump 1B.
NOTE Steps [15] through [19] fill and vent the RCDT pump suction header.
Step [20] starts the O2 concentration reduction.
[15]
PLACE [1-HS-68-31 OA] in the OPEN position, AND VERIFY [1-FCV-68-310] opens.
NOTE Opening 1-FCV-77-3 allows suction header to be vented to Cntmt Floor & Equip. Drain Sump.
[16]
OPEN [1-FCV-77-3] RCDT to RBF&EDS isolation.
[17]
WHEN a drop in PRT level is observed, THEN CLOSE [1-FCV-77-31
[18]
IF RCDT or suction line from RCDT has been drained and is ready to be filled, THEN
[a] OPEN [1-LCV-77-415] while MONITORING RCDT and PRT levels.
[b] WHEN a drop in PRT level is observed and/or RCDT level increases or is at desired level, THEN CLOSE [1-LCV-77-415].
(
SQN 1-50-68-5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 32 of 35 APPENDIX B Page 3 of 4 Date
[19]
CLOSE [1-FCV-68-310].
CAUTION 1 Pump damage could occur if suction is lost while pumping water> 175°F.
CAUTION 2 NOTE RCDT pump 1A will NOT automatically stop on low level in PRT OR closure of FCV-68-310.
RCDT Pump A operates automatically with 1-FCV-77-415 from the RCDT only.
(
[20]
ENSURE [1-HS-77-6] RCDT Pump B in PULL-TO-LOCK.
[21]
PLACE [1-HS-68-310A] in the OPEN position, AND VERIFY [1-FCV-68-310] opens.
[22]
START RCDT PUMP 'A' by placing [1-HS-77-4A] in the START position.
[23]
IF PRT pressure drops < 1.5 psig, THEN COMPLETE the following:
[a]
STOP 'A' RCDT Pump at O-L-2.
[b]
WHEN PRT pressure returns to normal, THEN START RCDT PUMP 'A' by placing [1-HS-77-4A] in the START position.
[24]
WHEN PRT reaches desired level, THEN STOP RCDT Pump A.
[25]
CLOSE [1-FCV-68-310]
1st IV
(
SQN 1-S0-68-5 PRESSURIZER RELIEF TANK Rev : 17 1
Page 33 of 35 APPENDIX B Page 4 of4
- Date,
[26]
DIRECT Chem Lab to obtain sample of the PRT atmosphere for oxygen concentration.
[27]
ENSURE control switches are in the P-AUTO position:
(
(
A.
[1-HS-77-4A] RCDT pump 1A.
B.
[1-HS-77-6A] RCDT pump 1B.
[28]
IF PRT 0, concentration is > 2% by volume, THEN RETtlRN to step [1] of this Appendix.
[29]
IF PRT 0, concentration is < 2% by volume, THEN RETURN to step [4] Section 8.8 of this Instruction.
END OF TEXT 1st IV 1st IV
(
(
SQN 1-S0-68-5 PRESSURIZER RELIEF TANK Rev: 17 1
Page 34 of 35 APPENDIX C Page 1 of 1
- Date, REDUCING LEVEL IN RCDT
[1]
ENSURE [1-LCV-77*415] RCDT pump suction OPEN.
[2]
START RCDT pump A or B by placing
[1-HS-77-4A] or [1*HS-77*6A] in START.
[3]
WHEN RCDT level is approximately 20%, THEN STOP the running RCDT pump.
[4]
ENSURE [1-LCV-77-415] RCDT pump suction CLOSED.
END OF TEXT
(
SQN 1-50-68-5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 35 of 35 SOURCE NOTES Page 1 of 1
(
l REQUIREMENTS SOURCE STATEMENT DOCUMENT Procedures that do not contain NCO 970071001 appropriate verification requirements will be revised. (This item is not annotated within the procedure since the entire procedure must meet the verification program requirements.
IMPLEMENTING STATEMENT C.1
SQN 1-S0-68-5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 11 of 35 Date 8.2 Reducing PRT Level Using 8 RCDT Pump (Continued)
[9]
IF PRT pressure drops < 1.5 psig, THEN COMPLETE the following:
[a]
STOP '8' RCDT pump at 0-L-2, AND CLOSE [1-FCV-68-310].
[b]
WHEN PRT pressure returns to normal, THEN OPEN [1-FCV-68-310j, AND VERIFY RCDT pump B STARTS.
(
CAUTION The RCDT level is to be maintained < 50% while 1-FCV-68-310 is open to prevent inadvertent opening of 1-LCV-77-415 which cou ld cause overfilling of RCDT from the PRT.
[10]
IF at any time while pumping down the PRT the RCDT level approaches 50%, THEN PERFORM the following before continuing the PRT level reduction:
[a]
PLACE [1-HS-77-6A] RCDT pump B in the PULL-TO-LOCK position.
[b]
CLOSE [1-FCV-68-310].
[c]
GO TO Appendix C of this Instruction for RCDT level reduction and return to Step [11] of Section 8.2.
(
JPM B.1.e Page 1 of 12 Rev. 7 SEQUOYAH NUCLEAR PLANT JOB PERFORMANCE MEASURE B.1.e JPM 36 RETURN PRESSURIZER RELIEF TANK TO NORMAL Original Signatures on File PREPAREDI REVISED BY:
Datel VALIDATED BY:
Datel APPROVED BY:
Datel (Operations Training Manager)
CONCURRED:
Datel (Operations Representative)
- Validation not required for minor enhancements, procedure Rev changes that do not affect the JPM. or individual step changes that do not affect the flow of the JPM.
(
(
JPM B.1.e Page 2 of 12 Rev. 7 NUCLEAR TRAINING REVISIONIUSAGE LOG REVISION DESCRIPTION OF V
DATE PAGES PREPARED/
NUMBER REVISION AFFECTED REVISED BY:
4 Transfer from WP. Procedure change to N
8/17/94 All HJ Birch Rev. 4. Made a perform JPM, not a simulate JPM.
penlink Added dates to cover sheep.
N 10/26/95 1
HJ Birch penlink SO-68-5 Rev chg. Minor rewording of N
9/25/96 4,8 HJ Birch step 13. Add step to monitor RCDT level.
penlin k Chgd initiating cues to direct prt drain first.
N 1/9/97 4
HJ Birch To help flow thru procedures. Deleted step to reset Pri Wtr alarm. It no longer comes in.
SO-68-5 Rev chg N
11/17/97 4
HJ Birch pen/ink SO-68-5 Rev chg. Added transition step N
5/12198 4-9 HJ Birch to sect 8.2. Several step enhancements.
5 Revised steps 17 and 18, added step 19 N
9/18/98 All JP Kearney as a result of revisions to SO-68-5.
Changes did not affect the flow of the JPM. Revised JAITA task numbers.
Revised KIA ratings. Reformatted critical steps.
penlink SO-68-5 Rev chg. Correct typo in N
8/21/00 4
SR Taylor Direction to trainee pen/ink SO-68-5 Rev chg only no effect N
12113/00 4
W. R. Ramsey 6
Incorporated pen/ink changes N
8/22/02 4
J P Kearney Pen/ink Updated references & IC#
N 11/17/03 2,4 T. E. Pitchford 7
Updated references. Minor format N
3/22107 All R. H. Evans changes. Resnapped IC to allow operator to use actual simulator values.
V - Specify if the JPM change will require another Validation (Y or N).
See cover sheet for criteria.
JPM 8.1.e Page 3 of 12 Rev. 7
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SEQUOYAH NUCLEAR PLANT RO/SRO JOB PERFORMANCE MEASURE Task:
Pzr Vapor Space Accident (Return PRT to Normal)
JAITA task #: 00700401 01 0070050101 0680990101 (RO) 0070010102 (SRO)
KIA Ratings:
008AA1.08 (3.8/3.8) 007A2.01 (3.9/4.2) 007K4.01 (2.6/2.9) 007A2.02 (2.6/3.2)
Task Standard:
Pressurizer Relief Tank (PRT) parameters have been returned to within normal ranges; temperature G:. 1550 F), pressure (1.5 - 6.5 psi), and level (- 70%).
Evaluation Method:
Simulator _..t:X~_
In-Plant
=======================================================================
Performer:
NAME Start Time
===========================================~==========================
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Performance Rating : SAT _
UNSAT _
Performance Time Finish Time DATE SIGNATURE
_ /_
Evaluator:
COMMENTS
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JPM B.1.e Page 4 of 12 Rev. 7 SPECIAL INSTRUCTIONS TO EVALUATOR:
1.
Sequenced steps identified by an "s" 2.
Any UNSAT requires comments 3.
Acknowledge any associated alarms.
4.
Initialize the simulator in IC-96.
5.
NOTE: This JPM has been pre-shot in IC # 96. Should IC # 96 be erased or fail to pertorm as expected then use the following set-up instructions:
Initialize Simulator in IC: #16. ACTIVATE MF RC05 at 5% to cause PCV-68-334 to leak through.
Allow PORV Tailpipe temperature to increase and bring in the alarm, then close FCV-68-333.
ACTIVATE RF RCR04 to remove power from valve.
Open FCV-68-303 to fill the PRT to ~ 84% then close the valve. Ensure PRT temperature
~ 135 ° F.
(These will be deleted during the performance)
Ensure FCV-81-12 is open.
6.
Due to time restraints CUEs for PRT level and temperature will be given at appropriate times.
Validation Time: CR.
17 mins Local READ TO OPERATOR
- =======~===============================================================~===
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ToolslEquipmentlProcedures Needed:
1-50-68-5 Section 8.2 & 8.4.
References:
Reference 1-S0 5 Directions to Trainee:
Title Reactor Coolant S stem Rev No.
17 I will explain the initial conditions, and state the task to be pertormed. All control room steps shall be pertormed for this JPM. I will provide initiating cues and reports on other actions when directed by you. When you complete the task successfully, the objective for this job pertormance measure will be satisfied. Ensure you indicate to me when you understand your assigned task. To indicate that you have completed your assigned task return the handout sheet I provided you.
INITIAL CONDITIONS:
Unit 1 is at 100% power, steady state. Pressurizer pressure controls in automatic, Pressurizer sprays in automatic.
PORV PCV-68-334 is partially opened but the block valve has been closed and de-energized.
1A Rx Coolant Drain Tank pump is inoperable.
You are the Operator At the Controls INITIATING CUES:
The Unit Supervisor has directed you to restore the PRT to normal per the appropriate SO.
Notify the Unit Supervisor when conditions in the PRT are normal.
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Job Performance Checklist:
STEP/STANDARD JPM 8.1.e Page 5 of 12 Rev. 7 SATIU NSAT
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STEP 1.:
Obtain correct procedure to return PRT parameter(s) to normal.
SAT UNSAT STANDARD:
Operator obtains a copy of l -S0 5 Sections 8.2 & 8.4.
Start Time__
COMMENTS:
NOTE:
The operator may choose to pump the PRT level down first, start at step 6 of the JPM in that case.
NOTE:
This portion is performed using Section 6.4 of the SO.
SAT STEP 2.:
[1]
ENSURE [FCV-61 -12] OPEN.
UNSAT STANDARD:
Operator verifies that FCV-81-1 2 is open by red light on.
COMMENTS:
STEP 3.:
[2]
OPEN [1-FCV-68-303] by placing [l -HS-66-303A] to OPEN SAT position.
UNSAT STANDARD:
Operator takes hand switch HS-68-303A on M-5 to OPEN. Handswitch Critical Step indicates valve is open by red light "ON". Th is step is critical to add primary water to the PRT for cooling.
COMMENTS:
JPM B.1.e Page 6 of 12 Rev. 7
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Job Performance Checklist:
STEP/STANDARD STEP 4.:
[3]
IF PRT level increases to z 88% or PRT temperature decreases to s 1200 F THEN CLOSE [1-FCV-68-303]
SAT/UNSAT
_SAT UNSAT Critical Step
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STANDARD:
COMMENTS:
STEP 5.:
[4]
STANDARD:
COMMENTS:
Operator monitors PRT level on L1-68-300 and temperature on TI-68-309, then places FCV-68-303 in the closed position and verifies green light ON. This step is crit ical to prevent overfilling the PRT.
IF PRT level is " 88% THEN GO TO section 8.2 or 8.3 of this instruction, AND RETURN to step [1] of this section if further temperature reduction is needed.
Operator goes to section 8.2 (1A RCDT pump is inop)
If operator has already performed section 8.2 then inform him that the JPM is complete by stating "ANOTHER OPERATOR WILL TAKE OVER THE OPERATION AT THIS POINT, THIS END THE JPM".
SAT UNSAT EVALUATOR NOTE The following steps evaluate section 8.2 of this procedure. Operator will return back to section 8.4 after draininq the PRT to further cool the PRT.
STEP 6.:
[1]
VERIFY RCDT pumps aligned for service in accordance with valve check list 1-77-1.02.
When AUO is contacted, state that 18 RCDT is aligned per checklist 1-77-1.02.
SAT UNSAT
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STANDARD:
COMMENTS:
Operator checks status log to ensure no deviations exist.
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Job Performance Checklist:
STEP/STANDARD JPM B.1.e Page 7 of 12 Rev. 7 SAT/UNSAT
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STEP 7.:
[2]
STATION AUO at panel 0-L-2.
SAT Cue:
Role play the Rad Waste AUO. State that you are at o-L*2 UNSAT panel and will stay here and wait on your instructions.
STANDARD Operator ensures an AUG is stationed at 0-L-2 panel.
COMMENTS:
STE P 8.:
[3]
IF RCDT level >20%, THEN SAT PUMP down RCDT level in accordance with Appendix C of this UNSAT Instruction.
Cue:
Role play the Rad Waste AUO. State that you are at o-L-2 panel and the level in Unit 1 RCDT is 18%.
STANDARD:
Operator checks with an AUO at 0-L-2 panel and ensures level is
< 20%
COMMENTS:
STEP 9.:
[4]
ENSURE [1-FCV-77-9] and [1*F CV-77-10] are OPEN.
SAT UNSAT STANDARD:
Operator verifies FCV-77-9 and FCV*77-10 open on panel M-15 (red lights on handswitches ON)
COMM ENTS :
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Job Performance Checklist:
STEP/STANDARD JPM B.1.e Page 8 of 12 Rev. 7 SAT/UNSAT
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STEP 10.:
[S] ENSURE [1-HS-77-6A] for RCDT Pump B is in the PULL*P-AUTO SAT position.
UNSAT Cue:
Rad waste Operator informs UO that RCDT Pump "8" is in PULL P-AUTO.
If asked, state that the level in the Unit 1 RCDT is stil/ 18%.
STANDARD :
Operator contacts Rad Waste Operator and verifies HS-77-6A for RCDT Pump B is in P-AUTO.
COMMENTS:
STEP 11.:
[6]
OPEN [1-FCV-68-30S1 Nitrogen Supply to PRT.
SAT UNSAT STANDARD :
Operator verifies FCV-68-30Sopen on panel 1 M-S (red lights on handswitches ON). This step is critical to ali gn Nit rogen to the PRT.
Critical Step COMMENTS:
STEP 12.:
[7]
PLACE [1-HS-68-310A] in the OPEN position, AND SAT VERIFY [1-FCV-68-310] OPENS UNSAT Cue:
If operator contacts the Rad Waste operator, then state to the Critical Step operator the 8 RCDT pump has started.
STANDARD:
Operator ensures FCV-68-310 open on paneI 1-M-S, red light. This step is critical to drain the PRT to normal leve l.
COMMENTS:
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Job Performance Checklist:
STEP/STANDARD JPM B.l.e Page 9 of 12 Rev. 7 SATIUNSAT
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STEP 13.:
[8]
ENSURE RCDT Pump B STARTS.
SAT UNSAT Cue:
RCDT pump B is run ning.
STANDARD:
Operator checks with Rad Waste AUO to ensure RCDT pump B starts.
COMMENTS:
STEP 14.:
[9]
IF PRT pressure drops < 1.5 psig, THEN...
SAT UNSAT STANDARD:
Operator monitors PRT pressure with PI-68-301 on 1-M-5 and closes FCV*68-310A if pressure drops to <1.5 psig.
COMMENTS:
STEP 15.:
[10] IF at any time while pumping down the PRT the RCDT level approaches SAT 50%, THEN..
UNSAT Cue:
When AUO conta cted, State: I will monitor RCDT level, Stop RCDT pump and notify you to close FCV*68*310 If RCDT approaches 50%.
STANDARD:
Operator notifies AUO of this step.
COMMENTS:
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Job Performance Checklist:
STEP/STANDARD JPM B.1.e Page 10 of 12 Rev. 7 SATIUNSAT
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STEP 16.:
[11] IF returning from Appendix C, THEN SAT UNSAT STANDARD:
Operator N/A's step.
COMMENTS:
STEP 17.:
[12] WHEN PRT level reaches desired level, THEN SAT STOP "B" RCDT.
UNSAT Cue:
When the operator begins to monitor level on L/-68-300, tell the Critical Step operator that "PRT level has decreased to 70%",
Cue:
When operator requests AUO to stop RCOT pump 18, Tell him "RCOT pump 18 is stopped and HS is in Pull-P-Auto".
STANDARD:
Operator verifies level, and has the Rad Waste Operator STOP RCDT Pump 1B and place HS in Pull-P-Auto. This step is critical to prevent pumping down PRT to below normal level of 70%. (maintained between 55 and 88%).
COMMENTS:
STEP 18.:
[13] CLOSE [1-FCV-68-31OJ.
SAT UNSAT STANDARD:
Operator closes with HS-68-310A and verifies closed on panel 1-M-5 (green lights on handswitches ON). This step Is critical to return Critical Step system to normal alignment.
COMMENTS:
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Job Performance Checklist:
STEP/STANDARD JPM B.1.e Page 11 of 12 Rev. 7 SAT/UNSAT
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STEP 19.:
[14] PLACE [1-HS-77-6Al RCDT pump B in PULL-P*AUTO position SAT at 0-L-2 panel.
UNSAT CUE:
When operator requests AUO to place the HS for RCDT pump 1B, Tell him "RCDT pump 1B HS is in Pull-P-Auto".
STANDARD:
Operator has the Rad Waste Operator place HS in Pull-P*Auto.
COMMENTS:
STEP 20.:
[15] CLOSE [1-FCV*68-305].
SAT UNSAT STANDARD:
Operator closes with HS-68-305A and verifies closed on panei 1-M-5 (green lights on handswitches ON).
COMMENTS:
NOTE:
I! operator performed section 8.2 first, then return to step 1 of the JPM to evaluate section 8.4 to cool the PRT.
I! operator has already performed section 8.4 then inform him that the JPM is complete by stating "ANOTHER OPERATOR WILL TAKE OVER THE OPERATION AT THIS POINT, THIS END THE JPM".
End of JPM
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CANDIDATE CUE SHEET (TO BE RETURNED TO EXAMINER UPON COMPLETION OF TASK)
DIRECTION TO TRAINEE:
I will explain the initial conditions, and state the task to be performed. All control room steps shall be performed for this JPM, including any required communications. I will provide initiating cues and reports on other actions when directed by you. Ensure you indicate to me when you understand your assigned task. To indicate that you have completed your assigned task return the handout sheet I provided you.
INITIAL CONDITIONS:
Unit 1 is at 100% power, steady state. Pressurizer pressure controls in automatic.
Pressurizer sprays in automatic.
PORV PCV-68-334 is partially opened but the block valve has been closed and de-energized.
1A Rx Coolant Drain Tank pump is inoperable.
You are the Operator At the Controls INITIATING CUES:
The Unit Supervisor has directed you to restore the PRT to normal per the appropriate SO.
Notify the Unit Supervisor when conditions in the PRT are normal.
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TENNESSEE VALLEY AUTHORITY SEQUOYAH NUCLEAR PLANT SYSTEM OPERATING INSTRUCTION 1-S0-68-5 PRESSURIZER RELIEF TANK Revision 17 QUALITY RELATED PREPARED/PROOFREAD BY:
JUDY VARNER RESPONSIBLE ORGANIZATION:
OPERATIONS APPROVED BY:
D. A. PORTER EFFECTIVE DATE:
05/09/2006 LEVEL OF USE:
CONTINUOUS USE REVISION DESCRIPTION:
Revised to incorporate PCF 007. Added steps in section 8.9 to allow purging PRT with either Hydrogen or Nitrogen on VCT.
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SQN 1-50-68-5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 2 of 35 Section Title TABLE OF CONTENTS Page 1 of 2 Page 1.0 1.1 1.2 2.0 2.1 2.2 3.0 4.0
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5.0 6.0 7.0 8.0 8.1 8.2 8.3 8.4 8.5 8.6 8.7 8.8 8.9 c..
INTRODUCTION 4
Purpose....................................................................................................................
4 Scope 4
REFERENCES...............................................................................................................
4 Performance References.........................................................................................
4 Developmental References 5
PRECAUTIONS AND LIMITATIONS..............................................................................
5 PREREQUISITE ACTIONS 6
STARTUP/STANDBY READINESS 7
NORMAL OPERAnON 8
SHUTDOWN 8
INFREQUENT OPERATION 9
Increasing PRT Level...............................................................................................
9 Reducing PRT Level Using B RCDT Pump 10 Reducing PRT Level Using A RCDT Pump..
13 Reducing the Temperature of the PRT...........................
16 Increasing the Pressure of the PRT 17 Reducing the Pressure of the PRT 18 Gravity Draining PRT to the Containment Floor and Equipment Drain Sump (RBF & EDS) 19 Reducing the O2 Concentration in the PRT in Mode 5 or 6 22 Purging the PRT 23
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SON 1-S0-68-5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 3 of 35 Section Ti tle TABLE OF CONTENTS Page 2 of 2 Page 9.0 RECORDS 25 APPENDIX A:
PRT O2 CONCENTRATION REDUCTION USING RCDT PUMP B 26 APPENDIX B:
PRT O2 CONCENTRATION REDUCTION USING RCDT PUMP A 30 APPENDIX C:
REDUCING LEVEL IN RCDT 34 SOURCE NOTES 35 ATTAC HMENT 1:
POWER CHECKLIST 1-68-5.01 ATTACHMENT 2:
VALVE CHECKLIST 1-68-5.02
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SQN 1-50-68-5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 4 of 35
1.0 INTRODUCTION
1.1 Purpose To provide instructions for the operation of the Pressurizer Relief Tank (PRT).
1.2 Scope A. Placing the PRT in service.
B. Increasing the PRT level.
C. Decreasi ng the PRT level.
D. Reducing the temperature of the PRT.
E. Increasing the pressure of the PRT.
F. Reducing the pressure of the PRT.
G. Gravity draining PRT to the Containment Floor and Equipment Drain Sump (RBF & EDS).
H. Reducing the 0, Concentration in the PRT in Mode 5 or 6.
I.
Purging the PRT in Modes 1 thru 4.
2.0 REFERENCES
2.1 Performance References None
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SQN 1-S0-68-5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 5 of 35 2.2 Developmental References A
SOI-68.1, Reactor Coolant System B. 0-MI-MXX-068-006.0, Venting of Pressurizer, Pressurizer Relief Tank, and Reactor Head C. SPP-10.3, Verification Program D. TVA Drawing
- 1. 47W813-1
- 2. 47W819-1
- 3. 47W830-1
- 1. Section 5.5 3.0 PRECAUTIONS AND LIMITATIONS A
During normal operation, PRT water temperature should not exceed 120'F.
B. Maintaining 3 to 6 psig N, gas blanket on the PRT will prevent the formation of explosive hydrogen-oxygen mixtures.
C. The PRT concentration of oxygen shall be limited to less than or equal to 2% by volume whenever the hydrogen concentration exceeds 4% by volume.
D. Over filling the PRT to solid water condition during oxygen reduction per Section 8.8 may result in failure of the PRT rupture disc.
E. The PRT pressure should be maintained < 7.5 psig during normal operation. (Except during the performance of section 8.9).
F. The PRT rupture discs are rated at 85 psig.
G. The level in the PRT should be maintained at 70%. If the level increases to 88%, then decreasing level to 70% is necessary. If the level decreases to 55%, then increasing level to 70% is needed when the PRT is required to be operable.
H. Completely draining the PRT may result in gas binding the RCDT pumps.
I.
Water intrusion into the waste gas vent header is possible during PRT venting operations with PRT level high. This could affect RCP sealleakoff flows and the vent capability of tanks which vent to waste gas vent header.
J.
PRT level indications or alarms are not available in the Aux Control Room, thus PRT level manipulations and feed & bleed processes are unavailable.
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SQN 1-50-68-5 PRESSURIZER RELIEF TANK Rev: 17 1
Page 6 of 35 Date 4.0 PREREQUISITE ACTIONS NOTE
[1]
[2]
[3]
[4]
[5]
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[6]
[7]
[8]
[9]
Throughout this Instruction, where an IFfTHEN statement exists, the step should be N/A if condition does not exist.
ENSURE Instruction to be used is a copy of the effective version.
ENSURE Precautions and Limitations, Section 3.0 have been reviewed.
ENSURE Attachment 1, Power Checklist 1-68-5.01 is complete.
ENSURE Attach ment 2, Valve Checklist 1-68-5.02 is comp lete.
VERIFY primary water is available to fill and cool the PRT (N/A if primary water will not be used).
VERIFY Waste Disposal System is available to receive liquid from PRT.
Print Name Initials
[10]
INDICATE below which performance section of this Instruction will be used and the reason for this performance:
o 5.0 STARTUP/STANDBY READINESS o 8.0 INFREQUENT OPERATION REASON:
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c SQN 1-S0-68-5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 7 of 35 Oate 5.0 STARTUP/STANDBY READINESS
[1]
VERIFY PRT has normal operating level of - 70%.
[2]
IF PRT level needs adjusting, THEN REFER TO Section 8.1, 8.2, or 8.3, AND ADJUST level as necessary.
[3]
IF PRT pressure needs adjusting, THEN REFER TO Section 8.5 or 8.6, AND ADJUST pressure as necessary.
END OF TEXT
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1-50*68*5 SQN PRESSURIZER RELIEF TANK Rev: 17 1
Page 8 of 35 6.0 NORMAL OPERATION None.
7.0 SHUTDOWN None.
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SQN 1-S0-68-5 PRESSURIZER RELIEF TANK Rev: 17 1
Page 9 of 35 Date 8.0 INFREQUENT OPERATION 8.1 Increasing PRT Level
[1)
ENSURE a primary water pump is running.
[2)
ENSURE [1-FCV-81-12) primary water containment isolation valve is OPEN.
[3)
OPEN [1-FCV-68-303) PRT makeup valve.
[4)
MAINTAIN PRT pressure between 3 and 6 psig by operating
[1-PCV-301) PRT vent valve.
NOTE Normal PRT level is approximately 70%.
[5)
WHEN PRT level increases to desired level (not to exceed 88%),
THEN CLOSE [1-FCV-68-303].
1st IV
[6)
ENSURE [1-PCV-68-301) PRT vent valve CLOSED.
1st IV END OF TEXT
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SON 1-50-68-5 PRESSURIZER RELIEF TANK Rev: 17 1
Page 10 of 35 Date 8.2 Reducing PRT Level Using B RCDT Pump CAUTION 1 CAUTION 2 NOTE Pump damage could occur if suction is lost while pumping water> 175°F.
RCDT pump 1B will NOT automatically stop on low level in PRT OR closure of FCV-68-310.
RCDT pump B will Auto start when 1-FCV-68-310, PRT drain to RCDT opens.
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\\...
[1]
VERIFY RCDT pumps aligned for service in accordance with Valve Checklist 1-77-1.02.
NOTE An AUO at panel 0-L-2 in communication with a MCR UO is needed to perform this Instruction.
[2]
STATION an AUO at panel 0-L-2.
[3]
IF RCDT level> 20%, THEN PUMP down RCDT level in accordance with Appendix C of this Instruction.
[4]
ENSURE [1-FCV-77-9] and [1-FCV-77-10] RCDT pump outlet isolation vaives are OPEN.
[5]
ENSURE [1-HS-77-6A] for RCDT pump B is in the PULL-P-AUTO position.
[6]
OPEN [1-FCV-68-305] Nitrogen Supply to PRT.
[7]
PLACE [1-HS-68-310A] in the OPEN position, AND VERIFY [1-FCV-68-310] OPENS.
[8]
ENSURE RCDT pump B STARTS.
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SQN 1*S0*68*5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 12 of 35 Date 8.2 Reducing PRT Level Using B RCDT Pump (Continued)
[11]
IF returninq from Appendix C, THEN PERFORM the following:
[a]
PLACE [1*HS*77*6A] RCDT pump 8 in PULL-P-AUTO position.
[b]
OPEN [1-FCV-68*310].
[12]
WHEN PRT reaches desired level, THEN STOP '8' RCDT pump.
[13]
CLOSE [1-FCV-68-310].
1st IV
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[14]
PLAC E [1-HS-77-6A] RCDT pump '8' in PULL-P*AUTO position at O-L-2 panel.
1st IV
[15]
CLOSE [1-FCV-68-3051 Nitrogen Supply to PRT.
1st IV END OF TEXT c..
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SQN 1-50-68-5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 13 of 35 Date 8.3 Reducing PRT Level Using A RCDT Pump CAUTION 1 CAUTION 2 NOTE Pump damage could occur if suction is lost while pumping water> 175'F.
RCDT pump 1A will NOT automatically stop on low level in PRT OR closure of FCV-68-310.
RCDT pump A operates automatically with 1-LCV-77-415 from the RCDT only.
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[1]
VERIFY RCDT pumps aligned for service in accordance with Valve Checklist 1-77-1.02.
[2]
IF R.cDT level > 20%, THEN PUMP down RCDT level in accordance with Appendix C of this Instruction.
NOTE Communications will have to be established between MCR.
Radwaste (0-L-2). and switchgear for "A" RCDT pump.
[3]
STATION an AUO at panel 0-L-2.
[4]
STATION an AUO at Switchgear for "A" RCDT pump.
[5]
ENSURE [1-FCV-77-9] and [1-FCV-77-10] RCDT pump outlet isolation valves are OPEN.
[6]
OPEN [1-FCV-68-305] Nitrogen Supply to PRT.
[7]
PLACE [1-HS-77-6A] RCDT Pump B in PULL-tO-LOCK.
[8]
PLACE transfer switch XS-77-4 on 1A-A Reactor Vent Board compartment 2C to AUX position.
[9]
PLACE [1-HS-68-310A] in the OPEN position. AND VERIFY [1-FCV-68-310] OPENS.
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SQN 1-S0-68-5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 14 of 35 Date 8.3 Reducing PRT Level Using A RCDT Pump (Continued)
[10]
PLACE [1-HS-77-4D] RCDT Pump A, in the START position (at switchgear).
[11]
IF PRT pressure drops < 1.5 psig, THEN STOP RCDT pump A.
[12]
WHEN PRT pressure returns to normal, THEN PLACE [1-HS-77-4D] RCDT pump A to the START position (at switchgear).
CAUTION The RCDT level is to be maintained < 50% while 1-FCV-68-310 is open to prevent inadvertent opening of 1-LCV-77-415 which could cause overfilling of RCDT from PRT.
[13]
IF at any time while pumping down the PRT the RCDT level approaches 50%, THEN PERFORM the following before continuing the PRT level reduction:
[a)
PLACE [1-HS-77-4D] RCDT pump A in the STOP position.
[b)
CLOSE [1-FCV-68-310l
[c]
OPEN [1-LCV-77-415].
[d)
START RCDT pump "A" with 1-HS-77-4D, AND REDUCE RCDT level to approximately 20%.
[e]
WHEN RCDT level is approximately 20%,
THEN STOP RCDT pump "A" with 1-HS-77-4D.
[f]
ENSURE [1-LCV-77-415] closed.
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SON 1-50*68*5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 15 of 35 Date 8.3 Reducing PRT Level Using A RCDT Pump (Continued)
[14]
IF resuming PRT level reduction, THEN PERFORM the following:
[a]
OPEN [1*FCV*68-310].
[b]
PLACE [1*HS*77-4D] RCDT pump A in START.
[15]
WHEN PRT reaches desired level, THEN
[a]
STOP RCDT pump A
[b] -
PLACE in PULL*P*AUTO 1st IV
[16]
CLOSE [1-FCV-68*310].
1st IV
[17]PLACE transfer switch XS*77*4 to NORMAL position, tst IV AND VERIFY wire seal reinstalled.
1st IV
[18]
IF desired, THEN PLACE [1*HS-77-6A] RCDT Pump B in PULL*P*AUTO.
1st IV
[19]
CLOSE [1*FCV*68*305] Nitrogen Supply to PRT.
1st IV END OF TEXT
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SQN 1-S0-68-5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 16 of 35 Date NOTE May need an extra copy of this Instruction.
8.4 Reducing the Temperature of the PRT
[1]
ENSURE [1-FCV-81-12] OPEN.
[2]
OPEN [1-FCV-68-3031 by placing
[1-HS-68-303Al to OPEN position.
[3]
IF PRT level increases to ~ 88% or PRT temperature decreases g 120°F, THEN CLOSE [1-FCV-68-303].
1st IV
[4]
IF PRT level is ~ 88%, THEN GO TO section 8.2 or 8.3 of this Instruction, AND RETURN to step [1] of this section if further temperature reduction is needed.
END OF TEXT
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SON 1-50-68-5 PRESSURIZER RELIEF TANK Rev: 17 1
Page 17 of 35 Date 8.5 Increasing the Pressure of the PRT
[1]
OPEN [1-FCV-68-305] Nitrogen Supply to PRT.
[2]
WHEN [1-PI-68-301J is between 3 to 6 psig, THEN
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CLOSE [1-FCV-68-305] Nitrogen Supply to PRT.
END OF TEXT 1st IV
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SQN 1-50-68-5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 18 of 35 Date 8.6 Reducing the Pressure of the PRT
[1)
STATION AUO at panel 0-L-2 to monitor vent header pressure and start Waste Gas Compressor (WGC) if necessary.
[2)
OPEN [1-PCV*68*301].
[3)
WHEN [1-PI-68*301) is between 3 to 6 psig.
THEN CLOSE [1-PCV-68-301].
1st IV NOTE:
Step [4) may be repeated if it is suspected that water remains in waste gas vent header and additional venting is necessary.
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[4)
IF the PRT pressure will not drop while venting or water is suspected to be in waste gas vent header, THEN PERFORM the following:
[a)
NOTIFY U-1 and U-2 SRO that vent header is about to be vented and to monitor AS area radiation monitors and 0-RM-90-101, AS vent monitor.
[b)
OPEN [O-LCV*77-403), Loop Dr LCV (653' U1 pipe chase), for 15 seconds, THEN CLOSE.
[c)
OPEN [O-LCV-77-404). Loop Dr LCV (653' U1 pipe chase), for 15 seconds, THEN CLOSE.
[d)
OPEN [O*LCV-77-405], Loop Dr LCV (669' U2 pipe chase) for 15 seconds, THEN CLOSE.
END OF TEXT o
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SQN 1-S0-68-5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 19 of 35 Date 8.7 Gravity Draining PRT to the Containment Floor and Equipment Drain Sump (RBF & EDS)
CAUTION Completely draining PRT may result in gas binding RCDT pumps.
[1]
OBTAIN permission from US to drain PRT to RBF & EDS.
[2]
ENSURE the following RCDT control switches in the PULL-TO-LOCK position:
A. [1-HS-77-4A] RCDT PUMP 1A.
B. [1-HS-77-6A] RCDT PUMP 1B.
[3]
PLACE [1-HS-77-415] RCDT pump suction in the CLOSE position AND ENSURE [1-LCV-77-415] remains CLOSED.
(switch is spring return to auto)
[4]
IF both of the following conditions exist:
Pressurizer PORVs OPEN, RCS is vented to atmosphere, THEN MARK Steps [5] and [6] as N/A.
NOTE:
If Step [4] is N/A, then either Step [5] or Step [6] must be performed to prevent drawing a vacuum in PRT while draining.
[5]
IF all of the following conditions exist:
Pressurizer PORVs are CLOSED, PRT is NOT vented to atmosphere, It is desired to use Nitrogen as cover gas, THEN OPEN [1-FCV-68-305] Nitrogen Supply to PRT.
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SQN 1-S0-68-5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 20 of 35 Date 8.7 Gravity Draining PRT to the Containment Floor and Equipment Drain Sump (RBF & EDS) (Continued)
[6]
IF all of the following conditions exist:
PRT has been purged and vented to atmosphere, PRT manual vent to be used as a vent path, 1-68-573 flange is removed, THEN ENSURE [1-68-573] PRT Manual Vent OPEN.
(7]
OPEN [1-FCV-68-310] PRT to RCDT suction header.
[8]
OPEN [1-FCV-77-31 RCDT to RBF & EDS.
[9]
IF high level alarm Illuminates on RCDT during this operation, THEN
[a]
CLOSE [1-FCV-68-310]
AND DRAIN RCDT to -20% level.
[b]
WHEN RCDT level is in the normal range, THEN ENSURE [1.LCV-77-415] is CLOSED AND OPEN [1-FCV*68-3101 to resume PRT draining.
[10]
WHEN it is no longer desired to transfer PRT to RBF & EDS, THEN CLOSE [1-FCV-77-3].
1st IV
[11]
CLOSE [1-FCV-68-310].
1st IV
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SQN 1-S0-68-5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 21 of 35 Date 8.7 Gravity Draining PRT to the Containment Floor and Equipment Drain Sump (RBF & EDS) (Continued)
[12]
ENSURE [1-FCV-68-305] Nitrogen Supply to PRT is CLOSED.
1st IV
[13]
IF manual vent used as vent path is step [6],
THEN ENSURE [1-68-573] PRT Manual Vent CLOSED.
1st IV NOTE RCDT suction piping may be gas bound if PRT was drained completely.
(
[14]
IF PRT was drained completely, THEN EVALUATE need to prime the RCDT pumps using 1-S0-77-1, Reactor Coolant Drain Tank.
(,
[15]
ENSURE [1-HS-77-415] RCDT pump suction in AUTO.
[16]
PLACE the following control switches to the PULL-P-AUTO position.
A.
[1-HS-77-4A] RCDT pump 1A.
B.
[1-HS-77-6A] ReDT pump 1B.
END OF TEXT 1st IV 1st IV 1st IV
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SQN 1-S0-68-5 PRESSURIZER RELIEF TANK Rev: 17 1
Page 22 of 35
- Date, NOTE 3 NOTE 4 8.8 Reducing the 0, Concentration in the PRT in Mode 5 or 6 NOTE 1 Local AUO assistance will be needed to perform this Instruction.
NOTE 2 Several copies of Appendices A and B may be needed to complete this Instruction.
This Instruction can only be performed in modes 5 and 6.
Step [1] may be NA'd if flange has been previously removed and hose installed.
[1]
REQUEST Mechanical Maintenance to REMOVE blind flange from [1-68-573] and to INSTALL a temporary hose.
[2]
IF reducing PRT oxygen concentration utilizing RCDT pump "B", THEN PERFORM Appendix A to reduce the PRT 0, concentration.
(
[3]
IF reducing PRT oxygen concentration utilizing RCDT pump "A", THEN PERFORM Appendix B to reduce the PRT 0, concentration.
[4]
ENSURE [1-PCV-68-304] PRT N2 pressure regulator maintains - 6.5 psig.
[5]
CLOSE [1-FCV-68-305] nitrogen inlet isolation valve.
1st IV
[6]
ENSURE [1-FCV-68-308] gas analyzer FCV CLOSED.
1st IV
[7]
ENSURE [1-68-573] PRT vent is CLOSED.
[8]
REQUEST Mechanical Maintenance to remove hose from
[1-68-573], AND INSTALL blind flange.
[9]
ENSURE [1-68-573] PRT vent to atmosphere CLOSED AND Blind Flange INSTALLED.
1st IV C.
END OF TEXT
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SQN 1-S0-68-5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 23 of 35 8.9 Purging the PRT CAUTION NOTE 1 NOTE 2 NOTE 3 NOTE 4 NOTES Date If PRT temperature is >130°F (1-TI-68-309), this procedure can NOT be performed.
This section purges the PRT by increasing pressure to - 15 psig then decreasing pressure to - 5 psig. Number of times pressure will be increased and decreased will be determined by Chern Lab.
0, concentration for inservice Waste Gas Decay Tank should be monitored during this process.
When PRT is vented to the RCDT, pressure will increase to near PRT pressure.
Two or three gas decay tanks will be required for this purge.
VCT pressure must be maintained :2: 25 psig when purging PRT.
(
[1]
IF desired to raise PRT level to just below high level alarm, THEN PERFORM Section 8.1.
[2]
IF hydrogen aligned to VCT, THEN ADJUST [1-PCV-62-120] VCT Hydrogen Blanket, to malntaln z 25 psig. (on top ofVCT room)
[3]
IF Nitrogen aligned to VCT, THEN ADJUST [1*PCV*62-119] VCT Nitrogen Blanket, to rnaintain z 25 psig. (on top of VCT room)
[4]
ADJUST [1*PCV-68*304] setpoint to - 15 psig.
(located in 690 pipe chase northeast corner)
NOTE 1-XA-55*5A window D1 is an expected alarm when this process increases pressure > 8 psig.
[5]
OPEN [1*FCV*68*305] Nitrogen Supply to PRT.
[6]
WHEN [1*PI*68*301] is - 15 psig, THEN
(
CLOSE [1*FCV*68*305j Nitrogen Supply to PRT.
(
SQN 1-50-68-5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 24 of 35 Date 8.9 Purging the PRT (Continued)
[7)
STATION AUO at panel 0-L-2 to MONITOR Vent Header pressure D.
NOTE 1-XA-55-5B window A2, B2, C2, & 02 are expected alarm when PRT is vented to the vent header due to increased pressure on RCDT.
[8)
OPERATE Waste Gas Compressor as necessary.
D
[9)
OPEN [1-PCV-68-301), PRT Vent header PCV.
[10)
WHEN [1-PI*68-301) is - 5 psig, THEN CLOSE [1-PCV-68-301), PRT Vent header PCV.
(
[11)
REPEAT steps [5) thru [10) as directed by Chem Lab.
[12)
VERIFY [1-PCV-68-305) CLOSED, Nitrogen to PRT.
IV
[13)
VERIFY [1-PCV-68-301) CLOSED, PRT Vent header PCV.
IV
[14)
RETURN [1-PCV-68-304) setpoint to - 6.5 psig (located in 690 pipe chase northeast corner) 1st cv
[15)
IF using Hydrogen, THEN ADJUST [1-PCV-62-120) VCT Hydrogen Blanket, to maintain approximately 17-20 psig. (on top of VCT room)
[16)
IF using Nitrogen, THEN ADJUST [1-PCV-62-119) VCT Nitrogen Blanket, to maintain approximately 17-20 psig. (on top of VCT room)
[17)
NOTIFY Chem Lab that PRT purge has been completed.
C END OF TEXT
(
SQN 1-50-68-5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 25 of 35 9.0 RECORDS Completed copies of all sections, Appendices, and attachments shall be transmitted to the Operations Superintendent's Secretary.
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SQN 1-S0-68-5 PRESSURIZER RELIEF TANK Rev: 17 1
Page 26 of 35 APPENDIX A Page 1 of4
- Date, PRT 0, CONCENTRATION REDUCTION USING RCDT PUMP B CAUTION Over filling the PRT to solid water condition may result in fai lure of the PRT rupture disc.
[1]
ENSURE [1-FCV-68-305] nitrogen inlet isolation valve is CLOSED.
[2]
ENSURE [1-PCV-68-301] PRT vent valve to vent header is CLOSED.
[3]
ENSURE [1-68-573] PRT vent to atmosphere is OPEN.
[4]
OPEN [1-FCV-6S*303] primary water supply to PRT.
[5]
VERIFY [1-L1-6S-300] PRT level indicator on 1-M-4 shows increase.
[6]
VERIFY PRT high level alarm comes in at - 88%.
[7]
WHEN water level reaches 98%, as indicated on
[1-L1-68-300], THEN CLOSE [1.FCV-68-303].
tst IV
[S]
CLOSE [1-6S-573] PRT vent to atmosphere.
[9]
OPEN [1-FCV-6S-305] nitrogen inlet isolation valve.
[10]
VERIFY RCDT pumps aligned for service in accordance with Valve Checklist 1-77-1.02.
NOTE An AUO at panel 0-L-2 in communication with a MCR UO is needed to perform this Instruction.
[11]
STATION an AUO at panel 0-L-2.
[12]
ENSURE [1-FCV-77-9] and [1-FCV 10] RCDT pump outlet isolation valves are OPEN.
\\..
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SQN 1-50-68-5 PRESSURIZER RELIEF TANK Rev: 17 1
Page 27 of 35 APPENDIX A Page 2 of 4 Date.
[13]
IF filling and venting of RCDT suction line or pumps IS NOT required, THEN GO TO step [20] and N/A steps [14] through [19].
[14]
PLACE control switches in the PULL-TO-LOCK position:,
A.
[1-HS-77-4A] RCDT pump 1A.
B.
[1-HS-77-6A] RCDT pump 1B.
NOTE Steps [15] through [19] fill and vent the RCDT pump suction header.
Step [20] starts the O2 concentration reduction.
[15]
PLACE [1-HS-68-31 OA] in the OPEN position, AND VERIFY [1-FCV-68-310] opens.
NOTE Opening 1-FCV-77-3 allows suction header to be vented to Cntmt Floor & Equip. Drain Sump.
[16]
OPEN [1-FCV-77-3] RCDT to RBF&EDS isolation.
[17]
WHEN a drop in PRT level is observed, THEN CLOSE [1-FCV-77-31
[18]
IF RCDT or suction line from RCDT has been drained and is ready to be filled, THEN
[a] OPEN [1-LCV-77-415] while MONITORING RCDT and PRT levels.
[b] WHEN a drop in PRT level is observed and/or ReDT level increases or is at desired level, THEN CLOSE [1-LCV-77-415].
[19]
CLOSE [1-FCV-68-3101
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SON 1-50-68-5 PRESSURIZER RELIEF TANK Rev: 17 1
Page 28 of 35 APPENDIX A Page 30f4 CAUTION 1 CAUTION 2 NOTE Date Pump damage could occur if suction is lost while pumping water> 175°F.
RCDT pump 1A will NOT automatically stop on low level in PRT OR closure of FCV-68-310.
RCDT Pump B will Auto start when 1-FCV-68-310, PRT drain to RCDT opens.
[20]
ENSURE control switches are in the P-AUTO position:
A.
[1-HS-77-4A] RCDT pump 1A.
1st IV B.
[1-HS-77-6A] RCDT pump 1B.
1st IV
[21]
PLACE [1-HS-68-310A] in the OPEN position, AND VERIFY [1-FCV-68-310] opens.
[22]
ENSURE RCDT Pump B STARTS.
[23]
IF PRT pressure drops < 1.5 psig, THEN COMPLETE the following:
[a]
STOP 'B' RCDT pump at O-L-2, AND CLOSE [1-FCV-68-310].
[b]
WHEN PRT pressure returns to normal, THEN OPEN [1-FCV-68-310j, AND VERIFY RCDT pump B STARTS.
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SQN 1-S0-68-5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 29 of 35 APPENDIX A Page 4 of 4 Date
[24]
WHEN PRT reaches desired level, THEN STOP RCDT Pump B.
[25]
CLOSE [1-FCV-68-3101 1st IV
[26]
DIRECT Chem Lab to obtain grab sample of the PRT atmosphere for oxygen concentration.
[27]
IF PRT 0, concentration is > 2% by volume, THEN RET!JRN to step [1] of this Appendi x.
(
(
[28]
IF PRT 0, concentration is < 2% by volume, THEN RETURN to step [4] Section 8.8 of this Instruction.
END OF TEXT
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SQN 1-S0-6S-5 PRESSURIZER RELIEF TANK Rev: 17 1
Page 30 of 35 APPENDIX B Page 1 of 4 Oate PRT 0, CONCENTRATION REDUCTION USING RCDT PUMP A CAUTION Over filling the PRT to solid water condition may result in failure of the PRT rupture disc.
[1]
ENSURE [1-FCV-6S-305] nitrogen inlet isolation valve is CLOSED.
[2]
ENSURE [1-PCV*6S-301] PRT vent valve to vent header is CLOSED.
[3]
ENSURE [1-6S-573] PRT vent to atmosphere is OPEN.
[4]
OPEN [1-FCV-6S-303] primary water supply to PRT.
(
[5]
VERIFY [1-L1-6S-300] PRT level indicator on 1-M-4 shows increase.
[6]
VERIFY PRT high level alarm comes in at - 88%.
[7]
WHEN water level reaches 98%, as indicated on
[1-L1-6S-300], THEN CLOSE [1-FCV-6S-303].
1st IV
[S]
CLOSE [1-6S-573] PRT vent to atmosphere.
[9]
OPEN [1-FCV-68-305] nitrogen inlet isolation valve.
[10]
VERIFY RCOT pumps aligned for service in accordance with Valve Checklist 1-77-1.02.
NOTE An AUO at panel 0-L-2 in communication with a MCR UO is needed to perform this Instruction.
[11]
STATION an AUO at panel O-L-2.
(
[12]
ENSURE [1-FCV-77-9] and [1-FCV-77-10] RCOT pump outlet isolation valves are OPEN.
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SQN 1-50-68-5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 31 of 35 APPENDIX B Page 2 of 4 Date
[13]
IF filling and venting of RCDT suction line or pumps IS NOT required, THEN GO TO step [20] and N/A steps [14] through [19].
[14]
PLACE control switches in the PULL-TO-LOCK position:,
A.
[1-HS-77-4A] RCDT pump 1A.
B.
[1-HS-77-6A] RCDT pump 1B.
NOTE Steps [15] through [19] fill and vent the RCDT pump suction header.
Step [20] starts the O2 concentration reduction.
[15]
PLACE [1-HS-68-31 OA] in the OPEN position, AND VERIFY [1-FCV-68-310] opens.
NOTE Opening 1-FCV-77-3 allows suction header to be vented to Cntmt Floor & Equip. Drain Sump.
[16]
OPEN [1-FCV-77-3] RCDT to RBF&EDS isolation.
[17]
WHEN a drop in PRT level is observed, THEN CLOSE [1-FCV-77-31
[18]
IF RCDT or suction line from RCDT has been drained and is ready to be filled, THEN
[a] OPEN [1-LCV-77-415] while MONITORING RCDT and PRT levels.
[b] WHEN a drop in PRT level is observed and/or RCDT level increases or is at desired level, THEN CLOSE [1-LCV-77-415].
(
SQN 1-50-68-5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 32 of 35 APPENDIX B Page 3 of 4 Date
[19]
CLOSE [1-FCV-68-310].
CAUTION 1 Pump damage could occur if suction is lost while pumping water> 175°F.
CAUTION 2 NOTE RCDT pump 1A will NOT automatically stop on low level in PRT OR closure of FCV-68-310.
RCDT Pump A operates automatically with 1-FCV-77-415 from the RCDT only.
(
[20]
ENSURE [1-HS-77-6] RCDT Pump B in PULL-TO-LOCK.
[21]
PLACE [1-HS-68-310A] in the OPEN position, AND VERIFY [1-FCV-68-310] opens.
[22]
START RCDT PUMP 'A' by placing [1-HS-77-4A] in the START position.
[23]
IF PRT pressure drops < 1.5 psig, THEN COMPLETE the following:
[a]
STOP 'A' RCDT Pump at O-L-2.
[b]
WHEN PRT pressure returns to normal, THEN START RCDT PUMP 'A' by placing [1-HS-77-4A] in the START position.
[24]
WHEN PRT reaches desired level, THEN STOP RCDT Pump A.
[25]
CLOSE [1-FCV-68-310]
1st IV
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SQN 1-S0-68-5 PRESSURIZER RELIEF TANK Rev : 17 1
Page 33 of 35 APPENDIX B Page 4 of4
- Date,
[26]
DIRECT Chem Lab to obtain sample of the PRT atmosphere for oxygen concentration.
[27]
ENSURE control switches are in the P-AUTO position:
(
(
A.
[1-HS-77-4A] RCDT pump 1A.
B.
[1-HS-77-6A] RCDT pump 1B.
[28]
IF PRT 0, concentration is > 2% by volume, THEN RETtlRN to step [1] of this Appendix.
[29]
IF PRT 0, concentration is < 2% by volume, THEN RETURN to step [4] Section 8.8 of this Instruction.
END OF TEXT 1st IV 1st IV
(
(
SQN 1-S0-68-5 PRESSURIZER RELIEF TANK Rev: 17 1
Page 34 of 35 APPENDIX C Page 1 of 1
- Date, REDUCING LEVEL IN RCDT
[1]
ENSURE [1-LCV-77*415] RCDT pump suction OPEN.
[2]
START RCDT pump A or B by placing
[1-HS-77-4A] or [1*HS-77*6A] in START.
[3]
WHEN RCDT level is approximately 20%, THEN STOP the running RCDT pump.
[4]
ENSURE [1-LCV-77-415] RCDT pump suction CLOSED.
END OF TEXT
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SQN 1-50-68-5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 35 of 35 SOURCE NOTES Page 1 of 1
(
l REQUIREMENTS SOURCE STATEMENT DOCUMENT Procedures that do not contain NCO 970071001 appropriate verification requirements will be revised. (This item is not annotated within the procedure since the entire procedure must meet the verification program requirements.
IMPLEMENTING STATEMENT C.1
SQN 1-S0-68-5 1
PRESSURIZER RELIEF TANK Rev: 17 Page 11 of 35 Date 8.2 Reducing PRT Level Using 8 RCDT Pump (Continued)
[9]
IF PRT pressure drops < 1.5 psig, THEN COMPLETE the following:
[a]
STOP '8' RCDT pump at 0-L-2, AND CLOSE [1-FCV-68-310].
[b]
WHEN PRT pressure returns to normal, THEN OPEN [1-FCV-68-310j, AND VERIFY RCDT pump B STARTS.
(
CAUTION The RCDT level is to be maintained < 50% while 1-FCV-68-310 is open to prevent inadvertent opening of 1-LCV-77-415 which cou ld cause overfilling of RCDT from the PRT.
[10]
IF at any time while pumping down the PRT the RCDT level approaches 50%, THEN PERFORM the following before continuing the PRT level reduction:
[a]
PLACE [1-HS-77-6A] RCDT pump B in the PULL-TO-LOCK position.
[b]
CLOSE [1-FCV-68-310].
[c]
GO TO Appendix C of this Instruction for RCDT level reduction and return to Step [11] of Section 8.2.