ML20206N538
| ML20206N538 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 08/12/1998 |
| From: | SOUTHERN CALIFORNIA EDISON CO. |
| To: | |
| Shared Package | |
| ML20206N476 | List: |
| References | |
| S023-12-7, S23-12-7, NUDOCS 9905170259 | |
| Download: ML20206N538 (7) | |
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NUCLEAR ORGANIZATION EMERGENCY OPERATING INSTRUCTION S023-12-7 UNITS 2 AND 3 REVISION 15 PAGE 10F 122 COMPLETE REVISION EFFECTIVE DATE AUG 12 R LOSS OF FORCED CIRCULATION / LOSS OF OFFSITE POWER 1
]JBLEOFCONTENTS SECTION g
]
PURPOSE 2
ENTRY CONDITIONS 2
EXIT CONDITIONS 2
OPERATOR ACTIONS 3
ATTACHMENTS 1
Safety Function Status Check 16 2
Floating Steps 27 3
Cooldown/Depressurizath 56 4
Alternate Reactor Vessel Level ferification 71 5
Diesel Generator Failure followup Actions 73 l
6 Diesel Generator Loading 78 7
Restoration of Offsite Power 84 l
8 Restoration of Secondary Systerns 100 l
9 Determine Time Until Shutdown Cooling Required 101 10 Post Accident Pressure / Temperature Limits' 107 11 Core Exit Saturation Margin Control 108 12 Void Compensation 109 13 Pressure Correction for L-110 110 l
14 Non-1E DC Load Reduction 111ltj l
15 Foldout Page 122 j
RECENEDCDM AUG 121998 57-15.W61 QA PROGRAM AFFECTING SITERLE00PY l
9905170259 990513 i:E;R ADOCK 05000361 p
l NUCLEAR ORGANIZATION EMERGENCY OPERATING INSTRUCTION 5023-12-7 UNITS 2 AND 3 REVISION 15 PAGE 3 0F 122 LOSS OF FORCED CIRCULATION / LOSS OF 0FFSITE POWER OPERATOR ACTIONS ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED 1
ENSURE $023-12-1, STANDARD POST TRIP ACTIONS steps 2 through 12
- complete.
2 VERIFY LOFC/ LOOP diagnosis:
a.
INITIATE Attachment 1, SAFETY FUNCTION STATUS CHECK.
b.
INITIATE Attachment 15, FOLD 0VT R
PAGE.
c.
VERIFY at least one train of IE c.
GO TO S023-12-8, STATION BLACK 0UT.
electrical AC and associated DC Control Power (Train A - 01, Train B - D2) - available.
d.
VERIFY at least one Class IE
- d. GO TO S023-12 9, FUNCTIONAL REC 0VERY.
120 V Instrument Bus
- available.
e.
VEP.IFY Class 1E 4 kV Buses A04 e.
INITIATE Attachment 5, DIESEL and A06 - energized.
GENERATOR FAILURE FOLLOWUP ACTIONS, 1
for NOT energized bus.
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NUCLEAR ORGANIZATION EMERGENCY OPERATING INSTRUCTION S023-12-7 UNITS 2 AND 3 REVISION 15 PAGE 18 0F 122 ATTACHMENT 1 LOSSOFFORCEDCIRCULATION/LOSSOF0FFSITEPOWER SAFETY FUNCTION STATUS CHECK SAFETY FUNCTION ACCEPTANCE CRITERIA ACCEPTANCE CRITERIA NOT MET 3
RCS Inventory Control a.
RCS Level and Saturation o =
ATTEMPT to re-diagnose event per Margin:
S023-12-1, STANDARD POST TRIP ACTIONS, Attachment 2, RECOVERY
- 1) PZR level:
DIAGNOSTIC.
a)
- between 10% and 70%
IF re-diagnosis identifies another event NOT loss of forced AND circulation / loss of offsite
- power,
- trending to between 30% and 60%.
THEN GO TO identified E01.
OR IF re-diagnosis identifies:
b)
- greater than 70% to a) Loss of forced circulation /
compensate for void loss of offsite power collapse.
OR AND b) More than one event,
- 2) Core Exit Saturation Margin
- greater than 20*F:
Ti1EN GO TO S023-12-9, FUNCTIONAL REC 0VERY QSPDS page 611 CFMS page 311 AND AND INITIATE S023-12-9, Attachment 6, RECOVERY - RCS INVENTORY CONTROL.
- 3) Reactor Vessel level (Plenum) - greater than or equal to 100%:
OR b.
Figure 2 HPSI THROTTLE /STOP CRITERIA - Satisfied.
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ATTACHMENT 1 PAGE 3 0F 11
O NUCLEAR ORGANIZATION EMERGENCY OPERATING INSTRUCTION S023-12-7 i
UNITS 2 AND 3 REVISION 15 PAGE 39 0F 122 ATTACHMENT 2 LOSS OF FORCE 0 CIRCULATION / LOSS OF 0FFSITE POWER FLOATING STEPS I
ACTIOW!ET.?ECTED RESPONSE RESPONSE NOT OBTAINED j
i FS-5 CHECK HPSI Throttle /Stop l
Criteria:
(Continued)
)
e.
VERIFY RCS borated - greater
- e. MAINTAIN Emergency Boration than Technical Specification
- at least 40 GPM.
Shutdown Margin for TAVE > 200*F j
per Operations Physics Summary l
Figure 2.3-1.
f.
THROTTLE OR STOP HPSI as required one train at a time.
g.
STOP charging pumps as required one at a time.
I h.
MAINTAIN Criteria of steps a through e - satisfied.
- i. CHECK Containment pressure
- i. 1) ENSURE SIAS - actuated.
- less than 3.4 PSIG.
- 2) GO TO FS-6, CHECK LPSI i
Termination Criteria.
f i
- j. RESET SIAS per S023-3-2.22, l
ESFAS OPERATION.
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l ATTACHMENT 2 PAGE 13 0F 29 l
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NUCLEAR ORGANIZATION EMERGENCY OPERATING INSTRUCTION S023-12-7 dNITS 2 AND 3 REVISION 15 PAGE 122 0F '22 ATTACHMENT 15 LOSSOFFORCEDCIRCULATION/LOSSOF0FFSITEPOWER FOLD 00T PAGE l
1.
NPSI Throttle /Stop Criteria If at least 1 S/G operating (SBCS/ADV, Fecdwater available), THEN INITIATE,FS-5CHECKHPSIThrottle/StopCriteria, j
2.
Monitor RCP Status IF all RCPs have stopped, THEN INITIATE Attachment 2, FS-2 NONITOR Natural Circulation Established.
3.
Monitor Offsite Power I
a)
If at least one 220 kV switchyard section is not energized to the Unit via Reserve Auxiliary or Unit Auxiliary transformers. THEN INITIATE RESTORATION OF 0FFSITE POWER.
1 b)
IF an B10 (y Non-lE Instrument Bus has become de-energized as evidenced by.
Unit 2/3) or 3809 (Unit 3) de-energized, THEN SELECT 2(3)VS612, i
2(3)Q0612 Instrument Bus #2 Transfer Switch, to EMERGENCY.
c)
IF there is a loss of offsite power, then INITIATE Attht.nent 14, NON-1E j
DC LOAD REDUCTION.
4.
Monitor CCW to RCP Seals IF CCW to the RCP seals has been lost and Containment Pressure is less than CCW Pressure, THEN INITIATE FS-9, EVALUATE Opening Containment Penetrations, and RESTORE CCW to the RCP seals.
S7-15.W61 ATTACHMENT 15 PAGE 1 0F 1
l..,
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ENCLOSURE 2 Corrected Table 15.5-4 to replace the table provided in Attachment 5 of PCN-470 (correction is double underlined)
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o San Onofre 2&3 FSAR Updated INCREASE IN REACTOR COO'LANT SYSTEM INVENTORY i
.. TABLE 15.5-4 SEOUENCE OF 5 VENTS FOR THE CVCS MALFUNCTION EVENT WITH SINGLE ~ FAILURE t
- Time, Setnoint Sec Event or Value O
Charging flow maximized, letdown +~RCP-flow 13_5 and'4 minimiz.ed, gpm 600.9 High. pressurizer pressure.LtripLgenerated and loss ofoffsite power,;. psia.
2437 601.9 CEAs beginLto drop 603.4 Pressurizer safeties open, psia 2550 603.8 Peak RCS. pressure, psi'a 2629 607.8 Maximum pressurizer liquid volume, ft3
<1465.7 608.5 Pressurizer safeties close,-psia 2200 612.7 Steam generator safeties begin to'open, 1122 psia 617.5 Steam. generator peak pressure, psia 1146 901 Operator'. takes ' control.cf plant
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