ML19253C908

LER 79-058/03L-0:on 791107,during Reactor Shutdown,Line Supplying Backup Bearing Water to 1A Helium Circulator Determined to Be Impaired Due to Impaired Hanger.Caused by Missing Anchor Bolt & Stripped Anchor Bolt Shield

ML19253C908
Person / Time
Site:	Fort Saint Vrain
Issue date:	12/06/1979
From:	Gahm J PUBLIC SERVICE CO. OF COLORADO
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19253C900	List: ML19253C899 ML19253C908
References
LER-79-058-03L, LER-79-58-3L, NUDOCS 7912120336
Download: ML19253C908 (1)

Text

U.S. NUCLEAR REGULATORY COMMISSION NRC FOyM,366 (7 77)

LICENSEE EVENT REPORT CONTROL BLOCK: l 1

l l l l l lh 6

(PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) o l' C l LICENSEE 0 l F CODE l S l V 1l@l0l0 14 15 l 0 l0 0l0l0l-LICENSE NUMBER 0 025l@l264 l1LICENSE l 1 l 2TYPE l 0Jol@l5 7 CAl T Sdl@

7 8 9 CCN'T 0 1 "CERC L @l 0 l 5 l COCKET 0 l 0 Nuv8ER l 0 l 2 l 668l 7 69@l 1EVENT l 1 DATE l 0 l 7 l 7 l 9 l@l 74 75 1 l DATE REPORT 210 l 683 l 7 l 9 l@

7 8 60 61 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h o 2 lAt 1326 hours0.0153 days <br />0.368 hours <br />0.00219 weeks <br />5.04543e-4 months <br /> on November 7,1979, with the reactor in a shutdown condition, the line I o a tsupplying backup bearing water to lA helium circulator was determined to be i= paired I o i4 ldue to an impaired hanger 10A-H-21208. This is a degraded mode of LCO 4.3.10 and is I ois l reportable per Fort S t. Vrain Technical Specification AC 7.5.2(b) 2. No affect on l o #6 health and safety of the public. I I

ai7 l l0id 80 9 9 SYSTEM CAUSE CAUSE CCYP VALVE CCCE CCCE SUSCODE COMPONENT CODE SUSCOCE SUSCOCE oIa lC l Bl@ l 3 l@ l A l@ lS lU lP l0 lR lT lh 9 10 11 12 13 :8 19 A @ l Z]@ 20 a

SECUENTI AL OCC;. A A E'.CE REFCRT CEV SfCN gga ao EVENT YE AR REPORT NO. CCCE TYPE NO.

@ aEPORT l 7) 9l l-l l Of 5l Sl l ., - l l0 l3 l Ll l-l 0l

_ 21 22 23 24 26 27 28 24 30 31 32 AK N A ON ON PL NT v wCURS $8 i FOR B. SUPPLIE VANUFACTURER lAlg Zlg l35 Zlg l 0l 0l 0} 0l Yg l2 Nlg A lg l X 9l9l9 g 33 34 lJ6 Zl@3/ 40 41 4 43 44 47 CAUSE CESCRIPTION AND CCRRECTIVE ACTIONS h i o pause of hanger 10A-H-21208 and system impairment was a missing anchor bolt and  ;

i i peripped anchor bolt shield. Missing bolt and defective shield were replaced and l

, , l hanger verified operable. l i I 3 I i A l 80 7 8 9 SA  % power OTHER STATUS IS RY DISCOV ERY DESCRIPTION t 5 lD@ 0l0l0l@lN/A l lCl@l Engineering Analysis of Hangers l ACTivlTY CO TENT AMOUNT CF ACTIVITY LOCATION OF RELEASE 1 l6 RELEASED Zl @OF RELEASEZ lgl N/A l l N/A l 7 8 9 10 11 44 45 30 PERSONNEL EXPOSURES TYPE CESCRIPTION s NUM8ER i 7 l0l0l0l@lZl@lN/A '

• l PERScN~EL i~;u' RIES NUv8ER oESCRi,Tio~@

7 i a 9 9 l0 l0 l0l@lN/A 11 12 80 l

LOSS OF OR DAMAGE To FACILITY Q tEAj . k TYPE OESCRIPTION %e []4i ., ,J i 9 j Z l@l N/A l 7 8 9 10 80

""C " ""

• SCRiPrioNO OE N/A 7 912120 M [3 llllllllll ll l :;

2 o iSSuEf@l IN l 68 69 80 %

8 9 10 /

7 7 J. W. Gahm (303) 785-2253

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