05000298/LER-1980-046-03, /03L-0:on 801117,isolation Valve on Discharge Line from Drywell Equipment Sump G, RW-A0-94,would Not Open. Caused by Hard & Worn U-cup Seal in Piston Air Operator. New Piston U-cups Installed & Valve Retested

/03L-0:on 801117,isolation Valve on Discharge Line from Drywell Equipment Sump G, RW-A0-94,would Not Open. Caused by Hard & Worn U-cup Seal in Piston Air Operator. New Piston U-cups Installed & Valve Retested

ML20002B977
Person / Time
Site:	Cooper
Issue date:	12/15/1980
From:	Scheer J NEBRASKA PUBLIC POWER DISTRICT
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML20002B975	List: 05000298/LER-1980-046, Forwards LER 80-046/03L-0 05000298/LER-1980-046-03, /03L-0:on 801117,isolation Valve on Discharge Line from Drywell Equipment Sump G, RW-A0-94,would Not Open. Caused by Hard & Worn U-cup Seal in Piston Air Operator. New Piston U-cups Installed & Valve Retested
References
LER-80-046-03L, LER-80-46-3L, NUDOCS 8101070480
Download: ML20002B977 (1)

LER-1980-046, /03L-0:on 801117,isolation Valve on Discharge Line from Drywell Equipment Sump G, RW-A0-94,would Not Open. Caused by Hard & Worn U-cup Seal in Piston Air Operator. New Piston U-cups Installed & Valve Retested

Event date:
Report date:
2981980046R03 - NRC Website

text

RC FORM 366 U.S. NUCLEAR REGut.ATORY COMMISSION

7 77)

LICENSEE EVENT REPORT

}@

CcNTRot stoCx: l l

l 1

l l

(PLEASE PRINT OR TYPE ALL REQUIRED INFoRMATION) l o l i l lN lE l C l P l R l 1 l@l 0 l 0 l-l0 l0 l 0 l 0 l - l 0 l 0 l 0 l@l4 l1l1l1l1l@l l

[@

7 8 3 LICENSEE CODE to to LICENSE NuM8ER 25 26 LICENSE TYPE JO 57 4AT58 CON'T Iol1I

"'[RcE l L hp l5 l0 l0 l0 l2 l9 l8 @l 1 l 1 l 1 l 7 l 8 l 0 @l1 12 l1 l 5 l 8 l 0 l@

a 7

8 60 61 DOCK ET NUMBER 68 69 EVENT OATE 74 75 REPORT DATE ih3 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h I

1oj2l lDuring cold shutdown, while performing S.P. 6.3.1.4. RW-AO-94 would not anon nfene 1 90,3; ;being closed. RW-AO-94 is required to close in <l5 seconds per RTS 3.7.D.1, Table I

i, l.i ] [3.7.1 and reopen to verify operability. No significant occurrence took place. RW-I lo Isl lAO-95 was tagged closed per Tech. Spec. 3.7.D.2. There were no adverse affects to I

l a !s I !public health and safety.

(Reference LER 80-36)

I lo !7! l I

I 10181l 80 7

3 3 SYSTEM

CAUSE

CAUSE COMP.

VALVE CODE CODE SUSCODE COVPONENT CODE SUSCODE SLBCODE i

10191 l M Al@ (_@@ l F l@ l V l Al Ll VI 0l Pl@ J@ ] @

1 4

9 10 l1 l2 E3 in t ')

2U S EQU E N TI AL OCCUR R E NCE REPORT R E VISION LER RO EVENTYEAR REPORT No.

CODE TYPE N O.

@ aj.g I 810l l-l I of 4 61 l/l 10 13 I It I l-l 10 l

_ 21 22 23 24 26 27 29 M

30 31 J2 TAK N AC N

ON PLANT v TH HOURS SB t FOR B.

SLPPtIER MANU A TURER IAl@lAl@

l Zl@

l 2]@

l 0l 01 01 Ol I Nl@

l l@

l N@

lMI3121d@

13

4 35 36 31 40 41 42 43 44 47 CAUSE DESCRIPTION AND CCRRECTIVE ACTICNS l i i o l lA Miller-64A single piston air operator installed on the inboard isolation valve on l lilijla discharge line fron drvvell eauipment sump "G". would not coen after beine closed.1 ji6 iINew piston U-cups were installed in the operator aftor the old ones were found to bd Ii131lhard and worn. The valve was then retested oer Survet11ance Procedura 6. 3.1. 4.

I l

11 14 I l A sngci fic PM =chodulo kne koon oe*ak'4choA 90 r

a

')

ST S

. POWER CTHER ST A TuS 015 OV RY DISCOVERY DESCRIPTION NA l

lBl@l Operator Observation l

l i I 5 I (_ Gj@ l 0l Ol 0l@l AoouNT O, AcT,v,Tv @ l

<0CATiC~ O, REuASE @

ACTivlTy CO TENT

.Eu ASEO cP REu ASE NA l

NA J

li is l I zi @ Lzj@l d 1 to 11 44 45 80 PE ASONNE L E XPOSUAES NUUl!E R TYPE CESCRiPTION NA l

l > l 1 l ] 0l 0( 0 l@l Zl@l

.E.SO~NE L,N;uLS oESCR.PTioN@

Nuco R li l ll0l0l0l@l NA l

80 M

1 11 12 t M Of 13H D AM AGE TO F ACllt f V T4PE DE s,CHiPTf 0N l

l'l4Il_Z_J@l NA 80 i

4 9

10

....a,[""nNci.PvioNO

• C*"**

l I Il [ N_fi@l NA l

ll lllllll1Ill}

es s9

80. ;

l a 3 io e p L. M eer 402-825-3811

{

PHONE:

NAME OF PREPARER 81010 7o t'#D