ML19309A176

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RO-77-15:on 771028,705 Lb Uncoated Aluminum Found in Reactor Bldg.Hydrogen Generation Safety Analysis Assumed 500 Lb for post-LOCA Reaction.Caused by Inadequate Controls at Initial Startup Permitting Operation W/O Concern for Inventory
ML19309A176
Person / Time
Site: Rancho Seco
Issue date: 11/28/1977
From: Walbridge W
SACRAMENTO MUNICIPAL UTILITY DISTRICT
To:
Shared Package
ML19309A174 List:
References
NUDOCS 8003260886
Download: ML19309A176 (1)


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'JCENSEE EVENT REPORT

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LEENSEE UCENSE EVENT -

NAME LCENSE NUMBER TYPE TYPE l Cl A l R l S l Sl 1l l0 l0 l-l 0l 0l 0l 0l0 l-l0 l 0 l l4l1l1l1l1l l0 l1 l 7 89 14 15 25 26 30 31 32 CATEGORY TYP CoCKET NUMBER EVENT CATE REPORT CATE a t con'T lM l I l W

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74 75 80 EVENT DESCRIPTION Eg l An inspection of the reactor building following the refueling outage on October 28 l

7 89 20 J Mlil l revealed that there were 705 pounds of uncoated aluminum in the l 3 7 89 SO EE lbu11 dine. The W reneration safety analysis assumed 500 pounds oresent for post-LOCA l 7 89 ea -

$ l vnvHan wh %cn Uvn, N 91dr 7 89 snrnv3.

A0-74-14 det:rfied a nrevious occurrence of l 5 80 HE lthis tvoe.

(RO-77-15) l 7 89 90,,

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CE COMPONENT CODE TupER VCLATON o

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7 89 10 11 12 17 43 44 47 48 g

CAUSE DESCRIPTION

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g l Inadequate controls at initial startup permitted operation without proper concern for l,

Alq l aluminum inventory. An initial attempt to establish the actual inventory omitted e0..*

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7 89 30 to l several components.

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FACE.lTY METHCo 0F STATUS

% POWER OTHER STATUS OtSCOVEPY DISCOVERY DESCRIPTON 8

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_12 13 44 45 46 80 7 8 9

ACTMTY CCNTENT RELEASED CF EELEASE AMOUNT OF ACTMTY LOCATCN OF RELEASE f

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7 8 9

10 11 44 45 80 PERSONNEL EXPCSURES NUMBER TYPE DESCRIPTON 1

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7 89 11 12 13 30 PERSONNEL INJURIES NUMBER CESCR:PTON I

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89' 11 12 80 OTFSITE CONSEGUENCES L

E l Minitaal to none l

7 89 20 LOSS OR DAMAGE TO FAC'UTY 80OS260 h((

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NA 7 89 10 80 PUBUCITY l Local newsonners and wire services notified November 12' 1977.

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1 7 89 oo AOCITIONat FACTCAS l The 500 pounds assu=ed in the analysis is not a limiting factor. Tne analysis will e9 30 99 j'be revised to determine the actual limit based on the Final ECCS Acceptance Criteria. l 7 89 80 R. U. M od o M. I. Usenhu d (916) 452-3211 NAME:

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