ML19317F993

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RO-76-02:on 760207,emergency Sump Valve HV-26106 Failed to Open on Control Room Signal During Surveillance of Decay Heat Sys Safety Features Actuation Sys Valves.Cause: Tight Packing or Sticking of Seat.Valve to Be Operated Monthly
ML19317F993
Person / Time
Site: Rancho Seco
Issue date: 03/04/1976
From: Colombo R, Eisenhuth F
SACRAMENTO MUNICIPAL UTILITY DISTRICT
To:
Shared Package
ML19317F850 List:
References
NUDOCS 8002210695
Download: ML19317F993 (1)


Text

LICENSEE EVENT REPORT CONinOt stOCc l

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oCENSE NUM.ER

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l 0 l 0l-l 0l0 l0 l 0 l 0 l-l 0l0 l l4 l1 l1l1l1l l0l1l 7 89 14 15 26 26 30 31 32 CATEGORY T

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DOCKET NUMBER rvENT OATE REPORT DATE O 1 CON'T l P ] 0 l

[LJ W l 0 l 5 l 0l-l 0l3 l1 l 2 l l 0l 2l 0l 7l 7l6 l l 0 l 3 l 0l 4l 7l6 l 7 8 57 58 69 60 61 68 69 74 75 80 EVENT OESCRIPTION gg lWhile performing a surveillance procedure testing the operation of the Decay Heat l

7 89 80.

EE l System SFAS Valves, Emergency Sump Valve HV-26106 would not open on Control Room signal l. fi 7

89 80 lThe redundant valve. HV-26105. was operable. This is a nimilar occurrence to that l

O 7 89 80 h l reported in A0-74-2.

(RO-76-2) l [

7 89 80 hl l

7 89 pwg 80 DE COOE COMPONENT CODE M

R VOLATON gg lS l F l Ql l Vl Al Ll V l E l Xl l Al lD l0 l2 l0 l W

7 89 10 11 12 17 43 44 47 48 CAUSE OESCRIPTION gg lThe valve would not operate either due to tight packing or sticking in the seat.

The l 7 89 BO,.-

@ l valve will be operated once a month until the end of Core 1, Cycle 1.

l LO9 80 11 I.;

7

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)9 80

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sTA us

% POWER OTHER STATUS O!SCOVERY DISCOVERY DESCRrPTON W

l0 l 0 l 0 l l NA l [

l NA l

7 8 9

10 12 13 44 45 46 80 ACTMTY CONTENT Rf LEASED OF RELEASE l AMOUNT OF ACTMTY LOCATON OF RELEASE W

W NA l

l NA' l

7 8 9

10 11 44 45 80 -

PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTON 35 l0l0l 0l lZ l l

NA l

.7 89 11 12 13 80 PERSONNEL INJURIES NUMBER DESCfhPTON l0 l 0l 0l l NA l

t 7 89 11 12 80 OFFSITE CONSEQUENCES Q l Minimal to none.

l 7 89 80 LOSS OR OAMAGE TO FACILITY TYPE DESCRIPTON Wl NA l

i 7 89 10 80 PUBLICITY Im l Sacramento " Union" and " Bee", March 5, 1976 l

7 89 80 S

(% AOOITIONAL FACTORS i

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80O2g30(p3-in l l

7 89 80 NAME:

R.W. Colombo /F.T. Eisenhuth (916) 452-3211 PHONE:

GPO 841 887