ML19209C019

LER 79-057/01X-0:on 791006,intake Structure Doors IS1 & IS2 Were Found Logged Open When Reactor Was Made Critical. Caused by Failure of Security Personnel to Notify Shift Supervisor of Intent to Open Water Tight Doors for Maint

ML19209C019
Person / Time
Site:	Calvert Cliffs
Issue date:	10/08/1979
From:	Davis S BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
LER-79-057-01X, LER-79-57-1X, NUDOCS 7910110405
Download: ML19209C019 (1)

Text

LICENSEE EVENT REPORT CONTROL BLOCK: l 1

l l l l l lh 6

(PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) o i MI 0l c l c N i ll@l C - [ # - 10 l 01010101 - O l 025l@l264 l 1LICENSE 1 ( 1JOl@l57 CAT $8 @

l 1 l TYPE 7 d 9 LICENSEE CODE 14 15 LICENSE NUMBER CON'T o i "E

$Og l L Gl 0 l 5 l 0 l 0 l 0 l 3 l 168l 7 63)@l EVENT 1 l DATg 0 0l617l9l@l1l010l817 74 75 REPORT DATE 980@

7 8 60 61 COCKET NUMBER EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h o 2 l Ouring a routine trio recovery the reactor was made critical at 1525. At O 3 l 1600 while the senior control roan operator was reviewing the outside operator's i O 4 l log, he noticed that intake structure doors IS1 and and 152 were locoed open 1 O s (T.S.3.0.3 and 3.7.10). The doors were immediately shut and locked. This is l O e I not a repetitive occurrence. I l

ol7 [

I 0 s i 80 7 8 9 CE CO E SUSC E COMPONENT CODE St.BC QE S' E o 9 lZlZ[@ lAl@ lX @ [ Zl Zl Zl Zl Zl Zl@ l Z l@

10 13 18 19 TJ Zl@

7 8 9 11 12 SFOU ENTI AL OCCURAENCE REPORT AEVISION REPORT NO. CCCE TYPE NO.

ggq mo

@ aeroa7 I l9 I EVINT VE AR l-l 0; 5l 7 l-l l0l1l lX l_l l0l 22 23 24 26 27 3 29 30 31 32

_ 21 TA N AC ON C PLANT VET HOURS SB I FO 1 8. SU PPLI E MANUFACTURER l03X l@l34X l@ [.Z_j@

35 lZ 36 l@ 31 01 0 0l Ol 40 41 N@ l42N l@ 43 A l@ Z 19 19 1947l@

44 CAUSE DESCRIPTION AND CORRECTIVE ACTICNS t o lThis event was caused by failure of security recennal +n nntiey the Chi 9 1 i I Suoervisor of their intent to ooen water ticht doors for maintenance access. 1 3 ]Inrediate corrective action was to shut and lock the doors. Further corrective i 3 l action will be detailed in the follow-uo recort. I I

1 i4 go 7 8 3 STA $  % POWER OTHER STATUS DISCOV RY Of SCOVERY DESCRIPTION l

t s lC @ l 0 0l 5l@lo $2 NA u

l lAl@l 45 46 Loc review _

80 A!TiviTv COTTENT LOCATiONOrRELEASE@

aEtEaSEo On aELEA$e Av0uNT C, ACriviTv @ l NA l 1 6 Z@ Zl@

NA l DEASONNE EXPOS ES

• NU"B E R TYPE O E SC RI PTIO N -

i i7 101010l@lZI@l NA So l

NNEL mJES

,E.5 N o.n E . :ESCRiPTiON@ j ]Ju 7e 078 g y 0l010l@l NA 7 3 3 11 12 LOSS Os OR DAMAGE TO FACILtTV 67O(

1 go t 9

• voE l Z l@l10 CESCRIPTION NA 7 910110 L/d f ' '

l So

' d 9 a

o

SSw E C L1J8110 OESCR:PTION NA S I 68 63 I l l i lli l l i l i li30. ~

7 8 3 NAME OF PAEPARER S. M. Davis psoyg (301) 234-7942  ?