ML19207B341

LER 79-063/03L-0 on 790723:during Normal Plant Operation, Technician Working on Fire Protection Mod Discovered Line Drain Valve W/Excessive Leakage.Caused by Check Valve in Drain Line w/off-centered Disk

ML19207B341
Person / Time
Site:	Brunswick
Issue date:	08/21/1979
From:	Tollison A CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19207B337	List: ML19207B336 ML19207B341
References
LER-79-063-03L, LER-79-63-3L, NUDOCS 7908240462
Download: ML19207B341 (1)

Text

^ ^ '

!7 77)

LICENSEE EVENT REPORT CONTROL BLOCK:

i l l l e

lh (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

Io IiI nIclnIeIPl 2 l@l 0 l 0 l - l 0 l 0 l 0 l 0 l 0 l - l 0 l 0 l@l 4l 1l 1l 1l 1lh! l@

7 8 9 LICENSEE CODE 14 15 LICENSE NUMBER 25 26 LICENSE TYPE 30 Si CAT 68 CON'T 7

o 1 8

5OuRCE l60L @l610l 5 l 0OOCKET l - l 0NUMBER l 3 l 2 l 468@l 690 l 7 EVENT I 2 lDATE 3 l 7 l 9 @l75 74 l l l l REPORT DATE l

80 l@

EVENT DESCRIPTION AND PRO 8ABLE CONSEQUENCES h O 2 lDuring normal plant operation, an I&C technician working on a fire protection modifi- l 0 3 l cation discovered a line drain valve with excessive leakage. This leakage rate was o 4 sufficient enough to prevent the charging of the service water fire hose stations. I O s Technical Specification 3.7.7.4, 6.9.1.9b l 0 6 l 0 7 l

0 a i I 7 8 9 80 SYSTEM CAUSE CAUSE CO' A P. VA LV E CODE CODE SUSCCOE COMPON ENT CODE SUSC DOE SU8 CODE 7

O 9 8

l Al B10 @ l B l@

9 11 12 B l@ lV lA lL lV lE lX l@ Q@ 1]@

13 18 19 20

_ SEQUENTI AL OCCURRENCE REPORT REVISION LE R. RO EVENT YEAR REPORT NO. COOG , TYPE N O.

@yREg 17 l 9 l l-l 101613l l/l l 01 3 l lLl l- l 0l

_ 21 22 23 24 26 27 28 29 30 31 32 T KEN AC ON ONP NT M HOURS 22 S B i FOR 8. SUPPLIER MANUFAC RER

[C__jg1 Z l@

J3 34 lZl@

35 36 Zl@ 31 0 l0 l0 0l 40 lN 41 l@ lN 42 l@ l43A l@ 44 Al6l0l5l@ 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h i 0 [ A check valve in the drain line had an off centered disk. The check valve was replaced D i i from stock and the system was returned to normal. This is considered an isolated i ITTTl I event and no further action is required.

i a l l 1 4 7 8 9 80 ST  % POWER OTHER STATUS IS O RY OlSCOVERY DESCRIPTION i 5 l El@ l 0 l 8 l 8 l@l NA l W@l Technician Observation l A IVITY CO TENT RELEASED OF ret 't ASE AMOUNT OF ACTIVITY LOCATION OF RELEASE R d @ lZl@l 7 8 9 10 11 NA 44 l l NA 45 80 l

PERSONNEL EXPOSURES -

NUMBER TYPE DESCRIPTION i 7 l 0l 0 Ol@l Zl@l NA l PERSONNEL INJURtES NUMBER DESCRIPTION i a NA 7 8 9 1 01 01 0l@l '

17 l

LOSS OF Oh Ol' %2 TO F ACILITY 43 0

y W@l TYPE NA C ESCF IPT.ON

. q*

o

7) 7 0 0 g' h @l @ 8 7 8 9 10 80 l_2._J NA O J ISSUE @l DESCRIPTION 7 8 9 to l lllllll[llll lI 68 69 80 %

~

1AME OF PREPARER PHONE: