ML20035H023
| ML20035H023 | |
| Person / Time | |
|---|---|
| Site: | 05200001 |
| Issue date: | 04/23/1993 |
| From: | Fox J GENERAL ELECTRIC CO. |
| To: | Poslusny C Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 9304300367 | |
| Download: ML20035H023 (3) | |
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< s April 23,1993 Docket No. STN 52-001 i
Chet Poslusny, Senior Project Manager Standardization Project Directorate Associate Directorate for Advanced Reactors and License Renewal Office of the Nuclear Reactor Regulation
Subject:
Submittal Supporting Accelerated ABWR Review Schedule - DFSER Conllrmatory Item 18.43-1
Dear Chet:
Enclosed are replacement pages for Page 18F-14 and Table 18F-23 of my April 22,1993 transi.rittal of the same subject.
Please provide a copy of this transmittal to Clare Goodman.
Sincerely, h9 3
Jack Fox Advanced Reactor Programs cc: Norman Fletcher (DOE)
Keith Gregoire (GE)
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ABWR msimin Standard Plant l
nev_ i 18F.3.5 RPV Flooding Contingency When RPV water level cannot be determined or when water level instruments cannot be relied upon to provide indication of adequate core cooling, RPV flooding is required, as specified in the ABWR EPGs. The RPV Flooding Contingency provides strategies for flooding the RPV. RPV water level must be continuously monitored. The EOPs provide specific criteria for determination of validity of indicated water level instruments. A fixed-position alarm, Indicated RPV Water Level Abnormal, will alen the operator when conditions exist which indicates that the displayed RPV water level was not reliable. This alarm is considered part of the minimum set of fixed-position alarms.
A success path for RPV Cooding is for the operator to initiate Dooding using IIPCF(B) or liFCF(C), bypassing the Level 8 IIPCF shutoffinterlock so that IIPCF can continued to be used for flooding the RPV above level 8. The fixed-position controls and displays necessary for flooding the RPV with the reactor shutdown are given in Table 18F-21 and are included as part of the minimum inventory set.
Table 18F-21 RPV Flooding Contingency EPG Controls Alarms Displays Success Path C4-3.1 : Initiate HPCF to inject HPCF(B) System indicated RPV RPV pressure, into the RPV until at least 6 SRVs initiation Switch, Water Level Wetwell pressure, are open, RPV pressure is not HPCF(C) System Abnormal SRV position increasing and is 3.27 kg/cm2 g Initiation Switch, indication.
or more above wetwell pressure, Level 8 HPCF(B) logic bypassing Level 8 interlock.
bypass (in system cabinet),
level 8 HPCF(C) logic bypass (in system cabinet),
18F.3.6.
Primary Containment Flooding Contingency For certain postulated LOCAs, adequate core cooling can only be maintained when the primary containment is fleaded to an elevation above the top of the active fuel. The minimum controls, displays, and alarms necessary for flooding the containment, and terminating injection flow into the containment, are included in Table 18F-14 and Table 18F-17, mspectively.
viBWR 23AsiooAx Standard Plant xEv. i TABLE 18F-23 MINIMUM INVENTORY OF DISPLAYS t
i NO.
FIXED POSITION N O.
FIXED POSITION j
I f
I RPV WATER LEVEL 22 PRIM ARY CONTAINMENT WATER LEVEL 2
WETWELL PRESSURE 23 SUPPRESSION POOL LEVEL f
3 SUPPRESSION POOL BULK AVERAGE 24 AVERAGE DRYWELL TEMPER ATURE TEMPERATURE 3
4 HPCF(B) FLOW 25 WETWELL HYDROGEN 3
CONCENTRATION LEVEL 5
HPCF(C) FLOW 26 DRYWELL HYDROGEN t
CONCENTRATION LEVEL l
1 6
RPV PRESSURE 27 DRYWELL OXYGEN CONCENTRATION 7
DRYWELL PRESSURE 28 WETWELL OXYGEN CONCENTRATION
?
i 8
REACTOR POWER LEVEL.
29 Main Stack radiation leve!
l (NEUTRON FLUX, APRM) 9 REACTOR POWER LEVEL (SRNM) 30 DRYWELL RADIATION LEVEL 10 REACTOR THERMAL POWER 31 WETWELL R ADIATION LEVEL l.
Il MSIV POSITION STATUS (INBOARD 32 SRV POSITION STATUS (6) l AND OUTBOARD VALVES) i 12 MAIN STEAM LINE RADIATION 13 SCRAM SOLENOIDS 9CWER STATUS l
LIGHlS (8) 1 34 RPV ISOLATION STATUS 3
1 i
15 RCIC FLOW l
16 RHR(A) FLOW l
17 RHR(B) FLOW l
18 RHR(C) FLOW 19 EMERGENCY DESEL GENERATOR (A)
OPERATING STATUS 20 EMERGENCY DIESEL GENERATOR (B)
OPERATING STATUS 2]
EMERGENCY DIESEL GENERATOR (C)
OPERATING STATUS l
Amendment ?7 ISFS
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