ML19345C512

LER 80-083/03L-0:on 801030,low Pressure in 1C Safety Injection Accumulator SI-TK-1C Indicated.Caused by Small Nitrogen Leak & Nitrogen Regulator on Supply Header Preventing Repressurization

ML19345C512
Person / Time
Site:	Beaver Valley
Issue date:	11/26/1980
From:	Lacey W DUQUESNE LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19345C508	List: ML19345C507 ML19345C512
References
LER-80-083-03L, LER-80-83-3L, NUDOCS 8012050407
Download: ML19345C512 (2)

Text

U S. NUCLE AR REGULATORY coa.tvi!SGN C F CA M 364 U.771

> LICENSEE EVENT REPORT CONTROL BLOCK: l 1

l l l l l 6

]h (PLE ASE PRINT CR TYPE ALL RECUIREO INFCRMATIONI lo lil l P 1 A ] 3 lV l S l 1 j@l 010 l- ]uCEN54 O 1010 l0 l0 l- l010 .6 j@p

6 l1 LICENSEl11111 Tv PE JO lgl $7 p+g l Jg to tS NwYSEM 7 8 9 LICENSEE CCOg C0wT 12 16 19 lo j@

loitj *[,"7 lQl 0 l 510 l 0 l 0 l 3 ( 314 @l sa i68f 013 l Ol i'< E NT  : ATERI nh* l 111 =E* cat: ATE

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. so i a 6a o :cCxaT Nws ta EVENT DESCRIPTICN AND PRC3 ABLE CONSEOLENCES . 4.,ir,1 e , o ,. 4 :4 , , o ,1 Joj2j l At 06'.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> with the plant in hot standbv, a vin' u1,m nf ni.ctic, s c r .,_,,, , e n J l o 13 ! l (T.S.) 3.5.1 occurred when low pressure in the 1c S:ifstv cressure j lol4j l (SI-!K-1C) was indicated. To increase the cressura and clear the icw g o l ., j g alar:s, a small amount of borated writer was added to SI-TK-1C. At 0715 hours0.00828 days <br />0.199 hours <br />0.00118 weeks <br />2.720575e-4 months <br /> the J

,a<*

1o is ; I alar:s cleared. 'a'ith SI-TK-IC only slichtiv belev its low cresaure catonint I

ra-'8-a4 J. I

[ o 17 ] l with both SI-TK-1 A and SI-D'A B coe rabl e , suf fle t.mt enre eaatiae I

Iais} I this event. COM*. VALvf 50 7 8 9 CAU$E CAUSE SLaCCCE 5 YST E M COvPCNENT CODE SLSCODE COCE CODE SLECDCE is 17 J@ lx l@ Iz ]@ lA IC I C lU l M l U lh l N j h [2_j h my a 9 10 11 12 5EGLENTI AL TJ 16 OC0gaaENCE 19 ai*CRT TvPE 20

1. Evi$40N N o'.

2005 loI DENT

• E AR REPORT NO.

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_ 21 22 NP204 PAIVE COMP, COMPCNENT A T* AC-MENT M ANUF AC*,saE m ACT ' O N SUTURE EF8ECT SHUTOCwN s*CUA5

• SL 8 MI TT E D FC AM WB. SL P'U E R MET *CO TAnEN aCTICN ON PLANT L2J@ l zl@ I ol olo I ol40 IV l@ I42N l@ Izl@ 12 1919191@ 47 iJJs !@L7J@ 34 33 36 3 ,, 41 43 44 CAUSE OESCR6PTION AND CORRECTIVE ACTlCNS A n ,b i n , withl lt lojl A c, mall nitrogen (N2T lad laA en who A*na in accu ulator preecura, v4~ M *k e so the v tar I 11 11] I the N2 reculator on the cunniv header oreventad raarece w ,v n. 4 r.,e I g,;7j l 1evel vas increased. The N2 system nroble-s have kaen en-rn-taa.

,, 93gj event of this nature has occurred at this plant. No future action is roouirad. l

. I so 12 14 11 7 8 e 3rscovEnv OESCw? tog gpowEm OWE m $TAftes O $COv a 5A - l liis}8 W @ l0l0l0l@l N/A l ad M h Onerator at a6 observation 30

'O 12 11 7 9 A C-1 v t TY CONTENT LOCATION OF AELEASE AuCUNT CF acTtvsTY l

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\1 \61agtta5EO@OpaELEASEh to 11 44 45 30 7 4 9 8Ea s;NNEL EXPCSL AES Nwstm TW1 C E SCRiPTICN - }

b 17 } 10 ] O l 0 j@l Z l@l N/A 8EeSCNNEL N;LalE5 NUM8ER DEsCmiPTtCN ]

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LO",5 OF OR CAMAGE TO FaCluTY Q N*E C E SC aiP TION v l li l 3j W @l N/A -

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Attachment To LER 80-083/03L Beaver Valley Power Station Duquesne Light Company Docket No. 50-334 No further information is available or needed to satisfy the reporting 2

requirement.

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