05000280/LER-2076-004, Re Failure of Valve in Suction Line to Close

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Re Failure of Valve in Suction Line to Close
ML19105A172
Person / Time
Site: Surry  Dominion icon.png
Issue date: 05/20/1976
From: Stallings C
Virginia Electric & Power Co (VEPCO)
To: Moseley N
NRC/RGN-II
References
Serial No. 041 LER 1976-004-00
Download: ML19105A172 (3)
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LER-2076-004, Re Failure of Valve in Suction Line to Close
Event date:
Report date:
2802076004R00 - NRC Website
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VIRGINIA. ELECTRIC.AND *.POWER COMP.ANY R10:e:M0Nn, V1:i-l.ox'N1A* 23261

  • May 20, 1,976
  • Mr*~ Not'.!llan C. i1ose.ley, _Director.

Office.of* Irisp_ection.*and. Enforcement.'

u. S~_:Nuclear *Regulatory Conmission

- Serial No~
  • 041

..

  • PO&M/ ALH:j lf.....

Docke't:- No.:,* 50-_2'81

_License *No. *DPR,:.37 Region< II ~ Suite ~ra*

230 Peachtree Street,:Northwe$t Atlanta,* Georgi.a.- ::*30303-,:..

  • Dear-.'i1i-~ M~seley:.**.

. Pur~ua~t'. to S"t.irry *P~wer St::ation. Technical Specificati~n 6.6.2; the

... Virgi11,ia Electric. ~d Power Company here}?y sul:mits. a copy, of R~portable.

,Occurrence No. JJSRE~S2-76.. Q4.*_.:*

,,_.* The.substance ~f:th:tsireport'has b~en reviewed by the'st:at:.ion Nu;lear.*-:

  • _ '> :_ : :Safety. arid Operating Comn'tttee-and *~rill-be* placed :-Qn_ the agend~ for the. ~ext
.**~* 111eet:ing: of ~e-'Syst~ Nudear.:s*af~ty-arid.Operating;G9Jmnittee~..

Enclosure c,*

'-\\._.....

. /.*.. Very truly yours,.

. Original. Signed B~ * * : *.

W~l\\ Pr6f:f1t**';**:

tor.

.. c~ M. stalling{*,..

..* *. Vice. Presiderit..,Power :supply,

'.*. :_and *Produ*~tion-.dperations.

.. cc:

  • Mr.: R~bert W_. Reid, -C4i~f* (40). ;.: *
  • * :operating _React9rs*: Branch ll :*

USRE-S2-75-04 CONTROL BLOCK:... I _.___.___,_ _ _.___.____,

LICENSEE EVENT REPOR.T tDln

  • .1* ~

, iDocket..:ill

. u~gu atoTY tt.,,

LICENSEE

~~~
.~<~~,-.S/.S
:i,~~[t!~t~. *.
  • .,~:LEASE PRINT ALL REQUIRED INFORMATION)

.':ej LICENSE EVENT 1

NAME LICENSE NUMBER TYPE TYPE

@El Iv I A I s I Pis l 2 I Io Io 1-1 o I al al o i o I~ I o I o I I 1~ I 1 I 1 I 1 I O I I O I 3 I 7

8 9 14 15 25 26 30 31 32 CATEGORY REPORT TYPE.

REPORT SOURCE DOCKET NUMBER EVENT OATE REPORT DATE

@E]coN'T IM I I I uJ ~ lol sl oj-~I ol 2ls 11 I ]ol412l2)1l6l !olsl1)1l1l6I 7

8.

57 58 59 60 61 68 69 74 75 80

EVENT DESCRIPTION

@:@l I With Unit 2 at intermediate shutdown prior to refueling shutdown, MOV-SW-202B, a valvej 7

8 9 80

~

I __,i...
  • n"'--t=h=e--=-s-=u;.;;;c...;;;t'""i'-=oc.::n;;..._:l:..:i:..:n;.:.;e:;__t.::.o.;;.......::t:;.;h..::e--=s..:e:..;:r:...:v..:i::..:c:...:e:.......ip::..:u=rn::.ip.:..:s~f::..r::..o.::..rn=--=t=h-=e~c-=i-=r~c~u::.:l:.:a:.:t:..:J.:::* n~g~w~a:..:t:..:e:..:r_:c:..:a::n:.:a:.:l::..:,~f:.:a::i:..* l=-=e..:d_:t_:o__JI 7

8 9 80 joj41 I close when a CLS Hi-Hi,. Train B signal was actuated during a routine functional testn-l 7

8 9

~( L (PT-8,5A)..

This event is in violation of Technical 80 Specification 3.4oA.5 and report-J 7

8 9 [filfil I ab le 7

8 9 per Technical Specification 6.6.2eb(2)o The immediate corrective action was 80 (CONTrD)

SYSTEM GODE

@EJ rn..l~

7 8 9 10

CAUSE

CODE uJ 11 CAUSE DESCRIPTION COMPONENT CODE LYl__Al Lj V I E I X I 12 17 PRIME COMPONENT SUPPLIER

~

43 COMPONENT MANUFACTURER IP,-314 lo r 44 47 VIOI.AllON w

48

~

jA maintenance order 7

8 9 was initiated to repair the valvec The contacts of the torque 80 I

BO

@El !switch.were corroded. causing an open circuit 7

8 9 condition in the valve closing circuit. J 80 the valve was demonstrated-~

[i@I IA new toraue switch was installed~ After this maintenance 7

8 9 (CONT I DJ BO FACILITY STATUS

  • % POWER OTHER STATUS EE]

w ltlgj_QJ z

7 B

g 10 12 13 FOAM OF ACTIVITY CONTENT [1 !21 RELEASED OF RELEASE AMOUNT OF ACTIVITY w

~J I N/A 7

8 9

10 11 PERSONtllEL EXPOSURES NUMBER TYPE

DESCRIPTION

~ l_gj_oj_gj w N/A 7

B g 11 12 13 PERSDNNEL INJURIES NUMBER

DESCRIPTION

EB l_gj_gj__gj L

'N / A 7

8 9 11 12 OFFSITE CONSEQUENCES 44 44 METHOD OF DISCOVERY w

45 DISCOVERY DESCRIPTION I~ _N/_A __________ _J 46 BO LOCATION OF RELEASE N/A 45 80 BO 80 [ili] LN:.;.L.'=A _______________________________

____J 7

B 9 BO LOSS OR DAMAGE TO FACILITY TYPE

DESCRIPTION

Q]J.W I NIA 7

8 9 10 80 PUBLICITY EI?.] l N/A 7

8 9 80 ADDITIONAL FACTORS

~ ! 'rhis valve could have been manually closed had this been requi:!'.'ed_ in an accident con-I 7

8 9 dition; hence, its failure to close did not adversely affect the health or safety of 80 rili:J ~.. the public*-"----

7 8 9 NAME.:J..., M~ Swee~~-"'---*

PHONE: (804) 357-3j_84 80 GPO 6 6 I

  • 6 6 7

EVENT DESCRl._PTION (GDNT 1D~

to manually close the valve (USRE-S2-76-04).

CAUSE DESCRIPTION(CONT 1D) be operable.

The other valve in the same valve pit, MOV-SW-202A, did not experience a similar problem since it was proven operable during functional test PT8.SA.

Because this similar*

valve was exposed to the same environmental conditions and did not fail, it is felt that this was an isolated occurrence and therefore no further.oorrective action is deemed

  • necessarye

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