05000321/LER-1981-027-03, /03L-0:on 810406,feedwater Valve B21-F032A Was Determined Not to Pressurize.Caused by Excessive Leakage. Investigation Underway.Valve Will Be Repaired

/03L-0:on 810406,feedwater Valve B21-F032A Was Determined Not to Pressurize.Caused by Excessive Leakage. Investigation Underway.Valve Will Be Repaired

ML20003G472
Person / Time
Site:	Hatch
Issue date:	04/23/1981
From:	GEORGIA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20003G471	List: 05000321/LER-1981-027, Forwards LER 81-027/03L-0 05000321/LER-1981-027-03, /03L-0:on 810406,feedwater Valve B21-F032A Was Determined Not to Pressurize.Caused by Excessive Leakage. Investigation Underway.Valve Will Be Repaired
References
LER-81-027-03L, LER-81-27-3L, NUDOCS 8104290575
Download: ML20003G472 (2)

LER-1981-027, /03L-0:on 810406,feedwater Valve B21-F032A Was Determined Not to Pressurize.Caused by Excessive Leakage. Investigation Underway.Valve Will Be Repaired

Event date:
Report date:
3211981027R03 - NRC Website

text

i.ct-m unx.

e__ n---

U.S. NUCLE AR REGULATORY COMMISSION ItC F ORM 366 A77)

LICENSEE EVENT REPORT con 1 RGt. block: (

l

!.I l

l l

(PLEASE PRPNT on TYPE ALL REQUIRED INFORMATION) 1 6

ES{ I c l A I E l I l H I l l@l 0 IO l 1010101010 l-lo 10 j@!411 11 Il 11 l@l I

l@

9 LICENSEE COOL I4 16 LtCt Nst NuMuEH Jb PG LICLNSE ivPE Jo blCAT68 0181 3o% QJ@l 01510101013 l 211 l@l 01410161811 j@l0 l 412131811 j@

con'T Gd b'J EVENT DATE 74 iS REPOHT DATE

• 0 60 61 DOCKET NUMBER 8

EVENT DESCRIPTloN AND PROBABLE CONSEQUENCES h o 12110n 3-30-81, with Unit I shutdown for a refuelina/ torus modification out-1 On 4-6-81, 1

o lai Lage LLRT of the feedwater valv_e B21-F032A was performed.

I Io 14J [the LLRT coordinator reviewed the data sheets, and it was determined This would t f a lsi lthat the valve would not pressurize due to excessive leakage.

O 6 Icause the.60 La limit of Tech Snecs 4.7.A.2.G to be exceeded.

This is 1 1017] la repetitive occurrence - refer to LER 50-321/1981-024.

There were no I

I' 1018] leffects on public health or safety due to this event.

80 DE CODE

$ BC E COMPONENT CODE SUBC DE SU E

l C I H l@ [.E_J@ LX_ J @ l VI Al L l VI El X l@ LC,_j@ [_D_J @

l O_LJ 7

8 9

10 11 12 13 18 19 20 SEQUENTI AL OCCURRENCE REPORT REvaslON EVENT YE AR REPORT NO.

CODE TYPE N O.

@ gtg'HO l 81 Il l-l 10 12 17 l y

I01 31 lLl

[.--J W

LER

,21

,22 23 24 26 27 28 29 30 38 32

\\

AK t A TO O PL T tE T r4 HOURS SB IT FO 1 UB.

SUPPL MAN FA TURER l_X,_j@[_X,J@

[ Z,_j@

l Zl@

& 10 10 10 l LYJ@

l Y l@

[N_j@

lRl31414l@

33 34 Jb 36 37 43 di 42 43 44 47 CAUSE DESCRIPTloN AND CORRECTIVE ACTIONS 27 lilolIThe cause of the valve leaking is unknown at the present time; an inves-1 itigation is underway.

The valve will be repaired and successfully re-I i i An update report will be j gi121 l tested prior to startup following the outage.

I li l 3 l l submitted.

1 l1 l4 l 1 7

8 9

$T US

% POWE R OTHER STATUS ISCO RY DISCOVERY DESCRIPTION I

l L'J.2I l nJ@ 10101 d@l NA l

l Bl @ l_ Performed LLRT.

'8 CO4 TENT LOCATION OF REMASE @

WOUNT OF AC1tVITY @ I ACTiviiv NA I

NA I

REM ASW Of HRE AR li Ic I L2J @ LZ_J@l Pi nsoNNEl E.,0sL s OEsCRiPiiON @

I muE n TvPE LLL'J l 01 ol ol@LZJ@l NA Pt nsOwE L,N,u',?,Es oEsCni,, ION @

I No.ur n i

10101 Ol@l NA 80 7

8 9 18 12

'51 ' 'afs"'^.SO.' ' ^c'"" @

I T

FT9 LzJ@l NA a

20 Lu NA l

llll111lllllII inUEj@l [5CHiPTION 2 o

'b.L() U U u % 'O

_ s'_

"l u o

e LER #:

50-321/1981-027 Licensce:

Georgia Power Company Facility Name:

Edwin I. Hatch Docket #:

50-321

Narrative

Report for LER 50-321/1981-027 On 3-30-81, with Unit 1 shutdown for a refueling / torus modif-ication outage local leakage rate tests of the feedwater check valve B21-F032 was performed per HNP-1-3952 (Primary Contain-ment Periodic Type B and Type C Leakage Tests).

On 4-06-81, the LLRT coordinator reviewed the data

sheet, and it was determined that the valve (B21-F032) was leaking'such that the test volume could not be pressurized.

This would cause the

.60 La overall allowable Icakage limit of Tech Specs 4.7.A.2.G to be exceeded.

This is a repetitive occurrence refer to LER 50-321/ 1981-024.

There were no effects on public health or safety.

\\c' The cause of the valves leaking is unknown at the present time; an investigation is underway.

The valve will be repaired and successfully retested prior to startup following the outage.

Im update report will be submitted.

1 l

l 1 o

\\_)

9