ML20028G440

LER 83-002/01T-0:on 830120,RCIC Inboard Steam Supply Isolation Valve Found in Open Position.Caused by Operator Mistakenly Removing Feed from Valve.Operators Counseled to Take Better Precautions

ML20028G440
Person / Time
Site:	Peach Bottom
Issue date:	01/28/1983
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20028G430	List: ML20028G429 ML20028G440
References
LER-83-002-01T, LER-83-2-1T, NUDOCS 8302090349
Download: ML20028G440 (1)

Text

, ,_.

LICENSEE EVENT REPORT (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

CONTROL BLOCCI: l 1

l l l l l lh 6

l l@

1018 9i 1 lP l A l P l B l S l 2 l@150 l0 l- l0 l0 l0 10 l0LICENSE 7 LICENSEE CODE 14 LICENSE NUM8ER 26 26 l- l0 TYPE l0JO l@l 4l1 57 CAT 68 l1 11l1 CON'T l0111 7 8 3c,","c Ql015 80 61 lo l- 10 1217 I 7 l@l DOCKET NUMBER 68 0 69 l 1lEVENT 2 l DATE 018 l 3 l@l 0 l1 74 75 l 2DATE REPORT l 8 l 813 80 l@

EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h 10131 lDuring Unit operation, observation in the control' room revealed i O 3 l indicating lights for the RCIC inboard steam supply isolation valve were l 0 4 lnot lit, because the breaker for the valve had been opened. Since the i O a Ivalve was opened when the feed breaker was opened,it was not capable of I.

O 6 lClosind on an isolation siQnal. DurinG that time the redundant isolationI lTITl Ivalve was not in the closed rosition as required when an isolation valvei Applicable Tech. Spec. is 3.7.D. I 10 l81 lis operable. s0 E CO E S SCODE COMPONENT CODE SUB ode SU E O 9 lC lEJh h h !Zl ZlZlZ lZlZ l@ h [Z_,j h 20 9 10 11 12 13 18 19 7 8 REVISION SEQUENTIAL OCCURRENCE REPORT EVENT YEAR REPORT NO. CODE TYPE NO.

L a%

@ gu'ER/RO u

,,,. l218 22l 31

(- ,,,j 23

[.0 j_0M 24 26 M

27 l 0l1 l 28 29 W

30

[---J 31

[0,,,,J 32 KN AC L NT ME HOURS SS i FOR B. SU Li MANUF CTURER lx_j@lLj@ LZ_J@ LZ_j@ l0 101010i40 L.yj@ 41 LXJ@

42 L Z.,J@

43 l44Zl 9 l 91947l@ '

33 34 36 36 3/

CAUSE DESCRIPTION AND CORRECTIVE ACTIONS 27 i O l The inoperable isolation valve was caused by an operator applying a I i i l block to remove the reactor water cleanup system from service and I

, 2 l mistakenly removing the feed from the RCIC system steam supply isolationi g ivalve. The operators have been counseled to take creater care when I I

i 4 Iperforming blocking functions.

SO 7 ag

% POWER OTHER STATUS DISCO Y OISCOVERY DESCRIPTION STA i s LEj h l110 l0l@l N/A l LA,,,,jh Operator Observation l AfTivlTY CMTENT RELEASED OF RELEASE AMOUNT OF ACTIVtTY LOCATION OF RELEASE i 6 [JJ h l N/A l l N/A I PERSONNEt ExrOSvAES NvMeeR TYPE DESCRiPriON @

1 7 1010l0lh d hi"

N/A "

l

' PERSONNEL iN;uWiES NuMsER DESCRieTioN@ l t 8 l 010 l 0lhl32 N/A 80 7 8 9 11 LOSS OF OR OAMAGE TO FACILITY TYPE DESCR6PTION 1 9 hl N/A l eUsuSTY 8302090349 830128 NRC USE ONLY

• iSSuEO DESCRirTiONh PDR ADOCK 05000277 ,

2 O W$ S PDR l l l l l I l ' I I I I I30IiE 7 8 9 10 68 69

. J. COOnev PHONE: (21 8h1-GG20 {

NAME OF PREPARER f -

.