ML19224D808

LER 79-013/03L-0 on 790508:correct Drywell to Suppression Chamber Reading Not Established.Caused by Leaking Inlet Purge Valve.Valve Repaired & Leak Tested

ML19224D808
Person / Time
Site:	Cooper
Issue date:	05/30/1979
From:	Mike Williams NEBRASKA PUBLIC POWER DISTRICT
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19224D806	List: ML19224D805 ML19224D808
References
LER-79-013-03L, LER-79-13-3L, NUDOCS 7907170065
Download: ML19224D808 (1)

Text

N RC.F O'M 366 U. S. NUCLE AR REGULATORY COMMISSION (7-7 7 )

LICENSEE EVENT REPORT CONTROL BLOCK: l l l  ! l l h (PLEASE PRINT OR TYPE ALL REQUIRED INFOR'JATION) o t l N l E l C l P l R l 1 lgl 0 l0 l- l 0 l0 0 0 l- l0 0 l0 l@l4 1LICENSL 26 l1 l1 'YPE 1l@30 l

57 vA T Sg l@

7 8 9 LICENSEE CODE 14 15 UCENSE NovBER .5 COvT IO 1 7 6

((RCe 60 b @l 0 j 5 0l0l0l2l9l8l@l0 l5 61 DOCK"T NUM8gq 6d ti9 0

E% ENT CATE 8 l7 l9 l@l0 l5 REPORT 74 75 l3 l0D ATE7 900l@

EVENT DESCRIPTION AND PROB ABLE CONSEQUENCES h a 2 l During reactor startup, drywell to suppression chamber SP of >1.47 psid was not _ l g ,

established per Technical Specification 3.7.E.1.a within the 26-hour time period l g , ; after achieving operating pressure and temperature due to a leaking purge inlet j g ,g , valve. The AP was established in 26 hour:. and 52 minutes. There was no effect l to 6 l up n public health and safety.

• O 7 l 0 8 l l

80 7 9 9 SYSTEM CAUSE CAUSE COvP VALVE CODE COCE SUSCODE COMPONENT CODE SUBCCOE SUBCOCE O 9 d

l Sl Al@

3 10 11 E j@

11 Bl@ 13 V lA lL lV lE IX l@ 18 19 Bl@ l Dl@ 29 SEQUENTI AL OCCLARLNCE REPCAT AFVISiON LER AQ EVENT YE AR REPORT NO. CCDE TYPE NO.

@ REPO9T 7 l9 {__j 0 l1 l 3 l l/l l 0l 3l lL l-l l 0l

_ 21 22 23 24 26 27 23 29 30 31 32 ACTION FUTUAE EFFECT S H l i T D C V.N ' TT AC H V E N T NPR D.4 PRIME CovP. COVPONENT TAKEN ACTION ON PLANT k'.THOD HCURS $U 8 MI TT E 7 FORMduB SU PP LI E R MANUFACTURER lBl@lZl@ lZl@ l36Z l@ l 0 l010 l0 l lN @

41 l l@ lN l@ lA l1 l8 l0 l@

33 34 J5 3! 40 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACT;ONS i o l A leakins, inlet purze valve designated PC-236 AV prevented achieving the required l 1 i i drywell to suppressicn chamber aP of 11.47 psid within the required 26 hours3.009259e-4 days <br />0.00722 hours <br />4.298942e-5 weeks <br />9.893e-6 months <br />. The  !

aP was achieved in 26 hours3.009259e-4 days <br />0.00722 hours <br />4.298942e-5 weeks <br />9.893e-6 months <br /> 52 minutes. Valve PC-236 AV has been repaired and leak  !

, 3 j tested. This occurrence has been diset.ssed with the persUnnel involved and a copy l g,  ; of the NCR his been routed to all 11censt d personnel. _

l a 9 80 F ACILITV VETHOC OF STATUS  % POWER OTHER STATUS 01SCOVERY DISCOVERY DESCRIPTION NA Operator Observation l 1 5 i Cl@ l 0 l 2 l 3 l@l l l A l@l

• C TI V I TY CC TENT A5 LEASED 7 RELEASE AMOUNT OF ACTIVITY LOCATION OF RE LE ASE 1 6 l Zl NA l NA go l

7 d 9 'J t1 44 ds ,

PERSO%EL E M PCSURL $

NUY8ER TYPC O ESC AIP TI CN 39 5 j 1 7 l 0 l 0 l 0 l@lZ l@l"

• PenSCN d 4 E R$25 NuYBE R OESCRt 2TICN t ,

l 0 l 0 l 0 j@l NA l 7 8 9 1 12 99 LOSS OF 09 OAVAGE TO FAC:LITv TvPE SCamTioN 790717 o C($f f 6 4 3 'O fq m *

!. o C;JE )E SC PiPTlON

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l ll lllllllt ll lj 7 a 3 m o 62 40. ;

NWE Cr PREPARER PwCP' 02-825-3811 2,