ML20085N656
| ML20085N656 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 05/17/1995 |
| From: | GEORGIA POWER CO. |
| To: | |
| References | |
| GL-88-17, OLA-3-I-MOSBA-7, NUDOCS 9506300272 | |
| Download: ML20085N656 (3) | |
Text
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/btosB A - 7 AGENDA Exhibit 1,page /
of u0CKETED USNRC
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--OPENING l
........ g. 3 y.P2 :34. R. P. MCDONALD INTRODUCTION.......
0FFICE Of 3ECRETARY. C. K. MCC0Y 00CKETING & SERVICE BRANCH A.
EMERGENCY NOTIFICATION.....
.... KEN HOLMES 1.
STATEMENT OF WHAT OCCURRED (TIME LINE), EQUIPMENT 2.
ROOT CAUSE 3.
CORRECTIVE ACTION 4.
SIGNIFICANCE B.
EQUIPMENT HATCH CLOSURE PAUL RUSHTON 1.
DISCUSSION OF HATCH CLOSURE 2.
ANALYSIS OF LOSS OF RHR 3.
ACTIONS FOR UPCOMING OUTAGE AND FUTURE CONSIDERATION 4.
SIGNIFICANCE OF MARCH 20 EVENT C.
D/G FAILURE
.............. LEWIS WARD NUCLEAR REGULATORY COMMISSION 1.
STATEMENT OF FACTS 5 - ~ ' -3 Docket No. Scmi seu-3 Official Exh. No. 2^+ )
In the matter of 6 [( e4
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2.
ROOT CAUSE se incurineo Appi4 cant RECEIVED t-3.
CORRECTIVE ACTION
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REJECTED Contg Otfr Coniactar CATE O T- / 7 - 4 T O
4.
SIGNIFICANCE otner weness su,.u.4 Reporter C. N.b 92 PRO.;ECT 059611 0424 0
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Exhibit l,page A of _3 l
l ANALYSIS PERFORMED IN RESPONSE TO GL i
l TIME TO BOIL / TIME TO CORE UNC0VERY l
l ANALYSIS ASSUMPTIONS:
l l
48 HOURS AFTER SHUTDOWN I
l UPRATED CORE (3565 MWTH)
NO CREDIT TAKEN FOR S/G'S AS A HEAT NO CREDIT TAKEN FOR OTHER WATER SO
.O SUCH A.S ACCUMULATORS,
CHARGING SOURCES RESULTS RCS HEATUP RATE OF 8.60F./ MINUTES ESTIMATED TIME TO BOIL OF 8.3 MINUTES ESTIMATED TIME TO CORE UNC0VERY OF MINUTES O
92 PROJECT 059633
___._..---- -._ _ _.. _ _ _ _ _ _...~._____ _.__ _ _ _. __.-..._.. -, _-_ _ _ _ _.-_..._....._ ____.____.__.
UPCOMING OUTAGE CONSIDERATIONS IRST MIDLOOP r
f i
70 HOURS AFTER SHUTDOWN
. 'APPROXIMATELY 15 MWTH DECAY HEAT LOAD 1
2 RAT'S AND ONE DIESEL WILL BE AVAILABLE TO SUPPLY ELECTRICAL POWER i
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RWST WILL BE AVAILABLE TO GRAVITY FEED IF NEEDED IN CASE OF LOSS OF ALL AC, EXPECT APPROXIMATE i
i RCS HEATUP RATE OF APPROXIMATELY 7.50F.
d j
TIME TO SATURATION OF 10-15 MINUTES DEPENDING ON INITIAL RCS j
TEMPERATURE i
CORE UNC0VERY IN APPROXIMATELY 70 MINUTES WITH NO OPERATOR ACTION USING GRAVITY FEED-TIME TO SATURATION CAN BE EXTENDED i
WITH NO COOLERS OPERATING, CONTAINMENT TEMPERATURE COULD INCREASE FROM 1000F. TO 1400F. IN APPROXIMATELY 30 MINUTES ACTION MANUAL MEANS OF HATCH CLOSING WILL BE AVAILABLE CAPABLE OF CLOSING HATCH IN 25 MINUTES 1
PROCEDURES HAVE PROVISIONS FOR RWST GRAVITY FEED CREWS DEDICATED FOR HATCH CLOSURE ARE DESIGNATED INSTALLING NEW DESIGN FOR LOWERING HATCH W/0 AC O
92 PROJECT 059638
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