ML13317B093
| ML13317B093 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 05/04/1981 |
| From: | Brunet R, Curran J SOUTHERN CALIFORNIA EDISON CO. |
| To: | |
| Shared Package | |
| ML13317B091 | List: |
| References | |
| TASK-02-03.B, TASK-02-03.B1, TASK-2-3.B, TASK-2-3.B1, TASK-RR SO1-1.6-2, NUDOCS 8204200214 | |
| Download: ML13317B093 (11) | |
Text
SAN ONOFRE NUCLEAR GENERATING STATION OPERATING INSTRUCTION #SO1-1.6-2 UNIT 1 MAY 4 8
EMERGENCY PAGE 1 Completely Revised REVISION 1 TSUNAMI WARNING.
SECTION PAGE A
Predicted Tsunami 2
B. Unpredicated Tsunami 6
~~tCENVED AY 71981 EDM SITE
'KP 8204200214 820412 PDR ADOCK 05000206 P
SAN ONOFRE NUCLEAR GENERATING STATION OPERATING INSTRUCTION #501-1.6-2 UNIT 1 MAY 198 EMERGENCY PAGE 2 Q
Completely Revised REVISION 1 TSUNAMI WARNING A.: PREDICATED--TSUNAMI WARNING 0i SYMPTOMS 1 I nf oration receive fom the Energy Control Center, or other sources and authenticated by the System Operations Supervisor.
2.0 AUTOMATIC ACTIONS 2.1 -Not Applicable 3.0 IMMEDIATE OPERATOR ACTIONS 3.1 Notify the Watch Engineer 4.0 SUBSEQUENT OPERATOR ACTIONS NOTE:
Refer to Emergency Procedure SQI-VIII-1.1, "Recognition and Classification of Energencies" to determine if this event is classified as an emergency under the Initiating Conditions (IC) and for the notification requirements of offsite authorties.
4.1 Prior to and during the performance of this instruction, the Watch Engineer shall periodically, reconfirm the predicated tsunami through the System Operations Supervisor V.n j.4.2 four 'hours:
tror to the predicated tsunami,' if the Unit is operatin.
~ (mod~I or 2)performthe f~1olngIY2 2
Remove th tfrom the eper SO-3-4, "Plant Shutdown from Full Powe rto Hot Standby." -In addition perform the Vol lwngsteps when below 10% of turbine speed:
Break condenser vacuum and secure the turbine gland system.
2 Close t ain steam 24" ock valve.
4.2.2:, YhenHot Standbyisestabl~shed and conditions are stable:
.....4-1 ansfer letdown.to the excess letdown heat exchanger.
Secure nomal charging and letdown flows
.3 aintain normal reactor coolant pump seal flow with the inservice charging pump.
A ONOFRE NUCLEAR GENERATING STATION
'OPERATING INSTRUCTION #501-1.6-2 UNIT 1 AY EMERGENCY PAGE 3
(
Completely Revise REVISION I TSUNAMI WARNING
_.SUBSEQUENT OPERATOR ACTIONS 43 Four hours prior to the predicated tsunami, Jf the reactor is at Cold Shutdown:
4 3.1 Maintan the RCS temperature below 200F.
4.3.2 If applicable, depressurize the RCS.
4.4 Two hours pior-to-thepreditated tsunamt 4.4. 1
- Stop the component cooling water flow to all non-essential eq uipment..
4.4.2 Start the auxiliary cooler.
4.4.3 Cool the turbine oil to the lowest possible temperature.
4.5 One hour prior to the predicated tsunami:
4.5.1 Stop all liquid radwaste releases, if in progress.
4.5.2 Remove the sodium hypochlorite injection system from service.
3 Stat the auxiliary salt water pump and open MOV-720A.
.._NOTE:
If the auxiiary salt water pump is not available, St.refer
.;S J_
whilerforming Steps 4.5.5
-thru 4.5.8.
toi the running salt
-water coo ing ip-step-4.5.4.
5.4 Stop the salt water co ng pump, and close MOV-7208.
4.5.5 Stop the screen wash pumps, and place their Start-Stop
.switches in the non-automatic position.
4 5.6 Stop.he North and u
ir culating water pumps.
4.5.7 Close the inlet and'oitle hydraulic stop-gates.
5.8 Align the component I1n g water-heat exchanger salt E
discharge to the Inlet of the turbine plant cool ng water heat exchangers.
SAN ONOFRE NUCLEAR GENERATING STATION OPERATING INSTRUCTION #501-1.6-2 UNIT I MAY 4 1981 EMERGENCY PAGE 4 Completely Revised REVISION 1 TSUNAMI WARNING
- 4. -.
SUBSEQUENT OPERATOR ACTIONS t
'NOTE:
Ts alignment 1 allow the a liary salt water cooling pumps to discharge through the component cooling and turbine plant cooling ater heat exchanger.
4.6 Monitor the ocean for tsunamsi wave action by monitoring the screenwell level, storm drains and the area in take structure for potential sea water in-leakage.
NOTE:
Inform Security to monitor ocean conditions from the South Security Tower ard to keep the Control Room advised.
4.7 Announce the emergency on the public address system, and have all Personnel within the protected area (except shift Operators and Security Officers) report to the AWS Bldg. lunchroom. The Shift Technical Advisor and other personnel, upon request, shall also report to the Control Room or Technical Support Center, as advised.
4.8 When the emergency conditions no longer exist:
4.8.1 If there is no evidence of plant damage:
Return the salt water system to normal after re-opening the inlet and outlet hydraulic stop gates.
.2 Operate the plant in accordance with the instructions from the
-- Watch Engi neer s'
-v~u, p.ln dafi-e 48.2 If there s obvious plant age
.1 Operate the plant in accordance with instructions from the Watch Engineer.
.2 The Watch Engineer will notify appropriate plant personnel
-and initiate required corrkctive maintenance action.-
9 Ifthe aui liary salt water pump is not available for operation:
4.9.1 Start or verify running the'North or South water cooling 7pump.
4.9.2 One hour-prior to the predicted time of tsunami, and after the inlet and outlet hydraulic stop gates have been closed, jog the inlet hydraulic stop gate open to maintain screenwell level.
SAN ONOFRE NUCLEAR GENERATING STATION OPERATING INSTRUCTION #501-1.6-2 UNIT 1 AY 4 198 MEMERGENCY PAGE 5 Completely Revised REVISION 1, TSUNAMI WARNING 4A SUBSEQUENT OPERATOR ACTIONS (Cont'd) 4.9.3 Upon receipt of alarm INTAKE STRUCTURE HI LEVEL, close the inlet hydraulic stop gate.
4.9.4 Open one circulating water pump discharge POV to the TPC heat exchangers and do the following:
.1 Remove circulating water pump ACB from its cubicle.
.2 81ock the MOC in the Operating position.
.3 Close the DC switch to the circulating water pump
-control circuit.
.4 Verify the POV (7 or 8) open.
4.9.5 Close the turbine plant cooling water heat exchanger salt water inlet valves.
--NOTE:
There will be no salt water flow to the TPCW heat exchangers during this operation. Refer to S01-7-14, "Turbine Plant Cooling Water System Operation" for additional instructions.
4.9.6 Align the component cooling water heat exchanger salt water outlet to the screenwell (via circulating water pump discharge
'POV) and close the discharge to the outfall tunnel.
SAN ONOFRE NUCLEAR GENERATING STATION OPERATING INSTRUCTION #S01-1.6-2 UNIT I MAY 4 1 EMERGENCY
-PAGE 6 Completely Revised REVISION 1 TSUNAMI WARNING
.B UNPREDICTED TSUNAMI WARNING S MPTOMS 1.1 Earth tremors followedby, Intake Structure High Level alarm 1.2 Offsite or On-Site Seismic Trigger alarms may actuate.
2.0 AUTOMATIC ACTION Not -Applicable 3.0 IMMEDIATE OPERATOR ACTION 3Announce the emergency on the public address system, and have all personnel within the protected area (except shift operators and Security Officers) report to the AWS Bldg. lunchroom. The Shift Technical Advisor and other personnel, upon request, shall also report to the Control Room or Technical Support Center as advised.
3.2 Trip the reactor, and verify the following:
3.2.1 Verify control rods fully inserted -nto the core.
3.2.2 erify reactor trip breakers open.
.23 Observe that the steam dump system s lowerng Tave to its w:no-load value of 535*F._-
fro
-V' nd*.~~&*-,
~ ~3
.2.4 Verify feedf low to the steam generat6rs rom e main and emergency auxiliary feedwater sytems.
3,2.5 Verify turbine stop and turbine control valves closed.
3.2.6 Verify Unit 1 CB-4012 and CB-6012 opened.
UBSEQUENT OERATOR ACTIONS NOTE:.
Refe Emergency Procedure SO-VIII 11, "Classification of Ergencies" to determine if this event is classified as an emergency under the Initiating Condtions (IC) and for the notification reqrementof fs ite authorities.
4.1 -When Tave is <5450F and the main feedwater regulators have closed to allow 5% flow, perform the following:
SAN ONOFRWU LE% GENERATING STATION OPERATING INSTRUCTION #501-1.6-2
-UNIT 1' EMERGENCY PAGE 7 Completely Revised REVISION 1 TSUNAMI WARNING 4 SUBSEQUENT OPERATOR ACTIONS (Cont'd) 4.1.1 Verify or establish 5150 gpm auxiliary feedwater flow to each steam generator through the emergency auxiliary feedwater header (normal auxiliary feedwater regulators if Auto Aux. Feedwater System not initiated).
-NOTE:
Flow shall be maintained <150 gpm whenever the feedring is uncovered (<26% on narrow range
- recorders)-and-feedwater temperature is less than 3000F.
4.1.2 Place FCV-456, 457 and 458 on manual and close the valves.
4.1.3 Close MOV-20, 21 and 22.
4.1.4 Increase steam generator level to 50% on the narrow range recorders.
NOTE:
For transferring auxiliary feedwater control from the emergency regulators to the normal
-..-regulators, refer to 501-1.1-1, "Emergency Shutdown."
4.2 Transfer the steam dump system to "PRESS CONTROL ATMOS-CONDENSER" when Tave approaches 5350F.
4.3 Transfer NIS recorder to intermediate range.
4 Stop the North and South circulating water pumps.
45 Close the inlet and outlet hydraulic stop gates.
4.6 Start the auxiliary salt water cooling pump.
4.7 Verify open or open the component cooling water MOV-720A and close
-MOV-7208, "component cooling water heat exchanger Discharge Valve."
8 Stop the inservice salt water cooling pump.
.9 Verify termination of generator coastdown at 40% of nominal terminal voltage (7200 volts).
SANONOFRE NUCLEAR GENERATING STATION OPERATING INSTRUCTION #01-1.6-2 "UNIT 1 iMdAY 4 gEMERGENCY PAGE 8 C
Completily Revised REVISION 1 "7TSUNAMI WARNING,',
4 SUBSEQU T OPERATOR ATIONS (Cont' 0 Rpo s A and B (from Auxiliary Transformer 10.1 Verify open ACB AO4 auxiiary transformer A feeder.
4 10.2 Verify open ACB 11B04 Auxiliary transformer B feeder 4.10.3 Close ACB 11lCO bus 1A-1C tie.
4.10.4 Close ACB 12C01, bus IB-2C tie.
4.11 ithin one (1) minute following the RCP'S tripping, start pump A, after two (2) minutes start the C pump or start B pump for recircula tion and pressurized sprays.
-CAUTION:
If all three pumps are tripped for more than one (1) minute, no pump may be restarted until thirty (30) minutes after reactor coolant temperature has stabilized and al l feedwater flow has been secured.
CAUTION:
Allow two (2) minutes between starts of each pump.
2 Align the component cooling water heat exchanger salt water discharge the inlet of the turbine plant cooling water heat exchanger by e co cornrect between component cooling water-heat xchange dscharge_;,,to ohf t
urbine plant cool irg water hearexchange r..
t--t~
2~~i--
ks'i neater 4'13 If auxiliary salt water cooling pump is not available:
3.1 Start the North or South salt water cooling pump.
13.2 Open one (1 circulating water pump discharge PV to pturbine lant cooling water heat exchanger.
_. Remove orne (1) circulating water pump ACB from its cubicle.
4-2.2
'Block the MOC switch in -the operating position.
.3 Close the DC control switch.
.SAN ONOFRE NUCLEAR GENERATING STATION OPERATING INSTRUCTION #501-1.6-2 UNIT I 1Ay 4 W EMERGENCY PAGE 9 Completely Revised REVISION 1 TSUNAMI WARNING 2 24.SoBSEQUENT PERATOR A o
4.13.3 Close the turbine plant cooling water heat exchanger al water -Inlet valves.
4.14 Place the ARMS Channel R-1218 (radwaste effluent) in the "Monitorn position.
4.15 Open TURBINE DRAIN VALVES, CV-85,.CV-86 and CV-88.
4.16 Close REHEATER STEAM SUPPLY MOV'S 14,15,16, and 17.
4 17 Verify start of turbine auxiliary oil pump.
4.18 Break turbine vacuum below 10% turbine speed and secure shaft sealing steam.
4.19 Close the main steam block valves.___
4.20 Remove the Sodium Hypochlorite Injection System from service.
.4.-21 Stop the Screen Wash Pumps and place the Start-Stop switches in the non-automatic position.
4.22 Monitor the screen well level, storm drains, and area around the intake structure for potential sea water in-leakage.
.23 Verify automatic turbine turning gear engagement.
24 Align backup sation powe, 22-V/18KV system).
4.24A Open generator motor operated disconnect switch.
4.24.2 Reset the lockup bus.
4.24.3 Close Unit 1, CB-4012 and CB-6012, energizing the main transformer an auxiliary transformers A and B.
4.24.4 Notify Mira Loma Switching Center as soon as practical.
425 Place the excess letdown heat exchanger in service if required to reduce heat load on component cooling water system.
425.1
-Position CV-228 (excess letdown 3-way control valve) to the RCP seal water return header.
SAN ONOFRE NUCLEAR GENERATING STATION OPERATING INSTRUCTION #501-1.6-2 NIT 1 EMERGENCY PAGE 10 Completely Revised REVISION 1
~~
~~
TSUNAMI-WARNING
-SUBSEQUENT OPERATOR ACTION -(Cont d 4.25.2 Open CV-287, the excess letdown isolation valve.
-4.25.3 -- Open CV-412, the exces 1etdown to seal water return line.
425.4
-Verify CV-413, letdown to the residual heat exchanger,;
closed.
4.25.5 Control pressurizer level with the HCV-1117, the excess
- letdown heat exchanger flow control valve.
4.25.6 Secure normal charging, close CV-304, charging supply valve and FCV-1112 charging flow control valve.
4.25.7 Secure normal letdown, close LCV-1112, letdown isolation.
CAUTION: Do not exceed 210 0F on the excess letdown flow temperature.
4.26 Establish plant status as conditions warrant using applicable procedure:
4.26.
SO1-3-4, "Plant Shutdown from Full Power to Hot Standby" 4.26.2 1SO-3-5 uPlant Shutdown from Hot Standby to Cold Shutdown" 4~27 Isotopic analysi s for Iodine in the reactor coolant must be made between-2.and 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> following a thermal power change exceeding 15%
withi aone (1)hourpertod.
4.28 When the emergency conditiohs no longer exist and there is no evidence of plant damage:
4.28.1 Return the salt water system to normal.
4.28.2 Operate the plant in accordance with instructions from the Watch Engineer.
Q.7
R E T
ATIOPERATING INSTRUCTION #S0-6-2 GA STNTIRE UNIT 1 REVISION Completely RevisedR
-. TSUNAMI'WARNI NG:
-:j: 9 fhere is obviou
,plant ge.
to no mal b utdown_
2Reun the plant,--nsoa' possil. e conditions.
4:2-2 'Th-Wtch ml
-ntify p -,opr t plant persomnel R.-R8RUNET,
-SUPERINTENDENTI UNIT1 APPROVED:
J.
M CURRAN PLANT MANAGER NUS/cb Wi
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