ML19344E086

LER 80-021/03L-0:on 800622,while Performing Routine Surveillance Test procedure,6.3.9.4,MSIV-86A Was Found to Have Closing Time Faster than Tech Spec Allowance.Caused by Setting MSIV-86A Too Close to Fast Limit During Shutdown

ML19344E086
Person / Time
Site:	Cooper
Issue date:	07/22/1980
From:	Mayer D NEBRASKA PUBLIC POWER DISTRICT
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19344E079	List: ML19344E078 ML19344E086
References
LER-80-021-03L, LER-80-21-3L, NUDOCS 8008260602
Download: ML19344E086 (1)

Text

- ._ - _ _ _ . . ._

e a T ,

+*

NRC'FoRO 366 U.S. NUCLEAR r.EGULATORY COMMISSION (7-77)

LICENSEE EVENT REPORT.

CONTROL BLOCK: l i

l l l l l Ih (PLEASC FRINT OR TYPE ALL REQUIRED INFoRMATION)

ITI l 8l 9N l ElLICENSEE 7

Cl PlCODE Rl 1l@l 14 Ol 15 Ol- l 0 l 0LICENSE l 0 lNUMSERO l , 0 l Ol 250l@l4 26 l1 Il l ll 1l@l57 CATSa LICENSE TYPE Jo l

l@

CON'T 10111 ES"C[ l Lj@l0 l 5101010 l 2 I 968l 8 69l@l 01612121 8l Ol@l REPORT 14 75 d d21?lRlnl@

OATE 80 7 8 60 61 DOCK ET NUMB ER EVENT OATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h F6T21 [Ihe reactor was operating at 48% rated thermal power. While performing routine sur- l 10 l a l Iveillance test procedure 6.3.9.4, MSIV-86A was found to have a closing time faster l lo l4 l Ithan allowed by T.S. 3.7.D. Seven of the eight MSIV's were within the Tech. Spec. I i o I ., I ilimits so this occurrence presented no adverse consequences from the standpoint of l l o is 1 !public health and safety. l 101711 I I

lo is i l 80 8 g C E CODE SUSCO E COMPONENT CODE SUSCOD'E SU E Lu2j l cl ol@ Ld@ L.zJ@IJ l vi Ad4 4 xl@ Ld@ Loj @

9 12 18 19 20 r 6 to 11 SE QU E N TI AL OCCUR R E NCE REPORT REVISION EVENT YEAR REPORT NO. CODE TYPE NO.

L(R RO

,,,.I dd22 l 012 l 11 O ,aEg'y l--J lf_] 10 13 I It i L-J 10 I 21 23 24 26 27 28 29 30 31 32 TAK N A ON O PLANT MET HOURS S8 IT FOR US. SUPPL E MANUF ACTURER Ls.J@Lc_J@

33 34 I z l@

3S Lz_l@

M loIol of of 37 40 LN_J el

@ l 42 l@ l d@ l Rl 3l 4] 4l@

43 44 47 CAUSE DESCRIPTION AND CCRRECTIVE ACTIONS l i 1 o i lhormal steam flow and pressure aid in closing the MSIV's. MSIV-86A was set too closel m lto fast limit during shutdown. Immediate corrective action was to adjust closing i g l time for MSIV-86A. Other corrective action was to add closing limit to S.P. 6.3.9.4 l l,i3i lfor shutdown condition. The valve is an air operated Rockwell Edwards 24" angle  ;

m l globe valve, model #1612-JMMNY. Ralph A. Hiller Co. supplied the air oper. #SA-A051. 4 7 8 9 80 STA S abPOWER oTHER STATUS Ots RY DISCOVERY DESCRIPTION U _ L ,] ( I j @ l 0l 4l 8l @ l NA l l Bl@l Operator Observation l A T VtTY CO TENT RELE ASED OF RELE ASE AMOUNT OF ACTIVITY LOCATION CF RELE ASE l' I6I W @ (,,,,yj @ l NA l l NA l 7 8 9 10 ti 44 45 80 PERSONNEL F11POSURES NUMBE R TYPE DESCRIPTION l

l ' l 71 l 010 l 0 l@d@l NA PERSONNE L INJURIES NovRER DESCRiPriON@

L W N.J9 I n i n i d@l12 n 80 I

/ Ii (USS OF 004 OAMAGE TO F ACILITY TYPE DE SCitiP TION 3 (_z_j@l NA go I

i n 9 to HiPf 80N l

3 a e%uj@l LN E NA l 68 69 ll llllllll ll ]f 80 L

1. 4 'J 10 Dennis Mayer 402-825-3811 o NAME F PREPARER PHONE: ,

8008260 Q Q .