ML19260D996

LER 80-005/03L-0:on 800110,Tech Spec Late Date Passed W/O Performance of Boric Acid Flowpath Heat Tracing Weekly Test. Caused by Known Deficiency in Design of Sys Resulting in Inability to Maintain Min Temp Necessary During Startup

ML19260D996
Person / Time
Site:	Davis Besse
Issue date:	02/06/1980
From:	Caba E TOLEDO EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML19260D992	List: ML19260D991 ML19260D996
References
LER-80-005-03L, LER-80-5-3L, NUDOCS 8002120718
Download: ML19260D996 (1)

Text

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DATE EVENT DESCRIPTION AP.3 PROB ASLE CONSEOUENCES h 1o j 2 ] l On January 10, 1980 a t 1700 hours0.0197 days <br />0.472 hours <br />0.00281 weeks <br />6.4685e-4 months <br /> the Technical Specification late date passed with- I pqTl [ out being able to successfully perform the Boric Acid Flowpath Heat Tracing Weekly I l o l a l l Surveillance Test ST 5011.01, Section 6.1. The concentrated boric acid storage systeml o s I was declared inoperable and the unit entered the action statement of Te.chnical Speci- !

loIc1 l fication 3.1.2.2.a. There was no danger to the health and safety of the public or to I o 7 i station personnel. The flowpath from the Borated Water Storage Tank (BWST) was i l'o !a J l operable. (NP-33-80-05)~ _J 60 7 8 9 SYSTEM CAUSE CAUSE COMP. VALVE CODE CCCE SUSCODE COYPONENT CODE SUSCODE SUSCODE lol9l lP lC l@ l Bl@ l Al@ l Z l Z l Z lZ lZ lZ l@ l Zl@ l.oZl@ 18 19 7 8 9 10 11 12 13

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[Q l42N l@ l43 A g 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h i o lThe cause of this occurrence is a known deficiency in t'ne design of this system which I li. ! i l makes it dif ficult to maintain the heat trace minimum temperature durinn demin water I

[TJT] l addition which is necessary durina a startup. Facility Change Request 78-508 will I

[,,3ll add a heat exchanger to preheat the water before it reaches the heat traced portion of i 4i i the pipe. 1 7 8'3 60 STA ] NPCAER oTHER STA1US D CO RY DISCOVERY OESCRIPTION l1 l5 l W@ l 1l 0 l 0 l@l NA l l B l@l operator observation l AC TIVt TY CO TENT RELE ASEO CF RELE ASE AMOUNT OF ACTIVITY LOCATION OF RELE ASE it 7

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9ERSCNNEL EXPOSUAES NUY3ER TYPE DESCRIPTION ili 711 01 01 Ol@lZl@l NA l PERSONNE INJ RtES NU'?S E R DESCR'P flON NA l i7171 1 01 01 O!@l 7 8 9 11 12 80 LOSS OF OR D AVAGE TO FACILITY TYPE DE SCRep rtON +

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DVR 80-007 Erdal Caba 419-259-5000, Ext. 236 o NAME OF PREPARER ' PHONE: S, p .