ML19224D798

LER 79-012/03L-0 on 790503:vessel Water Temp Increased to 220 F W/Primary Containment Integrity Not Established.Caused by Omission in Operating Procedures.Setpoint of Interlock Verified & Procedures Revised

ML19224D798
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
ML19224D794	List: 05000298/LER-1979-012, Forwards LER 79-012/03L-0 05000298/LER-1979-012-03, /03L-0 on 790503:vessel Water Temp Increased to 220 F W/Primary Containment Integrity Not Established.Caused by Omission in Operating Procedures.Setpoint of Interlock Verified & Procedures Revised
References
LER-79-012-03L, LER-79-12-3L, NUDOCS 7907170057
Download: ML19224D798 (1)

Text

, NRC FORM 366 U. S. NUCLE AR REGULATORY COMMISSION M7 s71 LICENSEE EVENT REPORT cONTROLstoCx: l l l l 1 l@ (PLEASE PRINT OR TY PE ALL REQUIRED INFORMATION) oI i :I el c pl o 1l@l 0 0 l0 0 0 0I l 0 I O ! 250 I@l4 LICENSE l1 Il 11 TYPg JJ Il I@!57 LAI 5d 7 8 9 LICENSEE CCOE 14 15 LICENSE NUMBER 26 COTT Ol 3l 7l o @ 0 l 51310 l 7 l980l@

d 5O,E bd L@l0 5I 0lDOC01 61 Ol 2l 4 8 hl O! Sl A ET NUV8ER Ld b) EVENT DATE !4 'S REPORT D ATE EVENT DESCRIPTION AND PROB ABLE CONSEOUENCES to ql Following reactor vessel in-servic;. eak test (hydro) during depressuri::ation, vessel ;

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water temperature exceeded 212 F with primary containment integrity not established.;

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Operating persor.ael e.<perienced dif ficulty resetting RER interlock at 75 psig  ;

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allowing the shutcown cooling mode of RHR to be placed in service. There was no  ;

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effect upon public health and safety. l o 7 l

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o a l 30 7 8 9 SYSTEM CAUSE CAUSE COMP VALVE COCE CODE SUBCCCE COYPONENT CODE SUBCOCE SU8CCOE O 9 l Sl Alg l Dlg l Z Q 9 10 12 1J ZlZlZlZ Z l Z jg l Z g 18 19 Z lg 20 7 8 11 SEQUENTI AL OCCURRENCE REPCRT REVISION

_d'v f NT YE A R R EPOR T No. CODE TYPE No.

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_ 21 22 2J ACTION FUTUAE EFFECT SH U T OOWN ATT AC HV E N T NPRD4 PRIVE COvP. CCYPONENT TAKEN ACTiCN CN PLANT VETHOD HOURS SUB MI TT E D FORM 5UB SU Po t:ER MANUFACTURER Glg[34]g Z lg l36Zlg 0l 0l 0 l l N jg lg lNl@ lX 9 9l9l@

33 05 3/ 40 41 42 43 44 47 cAUsE DESCRIPTION ANO CC ARECTIVE ,=CTIONS i o l Procedure did not caution ooerator about 212 F limit. Procedure chanzed. I i i l Technical Specifications will be reviewed to de armine whetier the 212 F l,j7l l limit can be waivered during hydro. Occurrence discussed alth personnel l 3 3 l involved and LER routed to licensed operators. i 1 4 l 3 ') 80 F ACILITY VETHCO CF STATUS a

% POv.E R OTHE A STATUS 015 COVE A Y DISCOV:RY DESCRIPTION i 5 l H l@ Lol of 0181 I I3IGI Operator Odservation i ACTivlTY CON TE NT AELEASED CF AELE ASE AMOUNT OF ACTIVITY LOC ATICN OF RELE ASE NA i 6 d 9 lZl@ Zl@ l'J 11 NA 44 l

45 80 l

PEA 5CNNEL E M POSgu gs NuvaER TYPE D E SCRI PTI ON 39 N

1 7 l 0 l 0 l 0 l@[Z]@l 11 80 l

7 4 3 12 13 PE ASONNFL .NJLRIES 7vvBER OESCmPTION NA l

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i 4 3 9 1010101@l 11 12 30 LOSS QF OR OAVAGE TO F ACILITY

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