05000267/LER-1980-036-03, /03L-0:on 800706,during Rise to Power & Outpassing of Moisture from Circulator buffer-mid-buffer Upset & cross-tower Leakage of Buffer Helium Dryer Due to HV-21352. Valve Disc Replaced by Brass Model

/03L-0:on 800706,during Rise to Power & Outpassing of Moisture from Circulator buffer-mid-buffer Upset & cross-tower Leakage of Buffer Helium Dryer Due to HV-21352. Valve Disc Replaced by Brass Model

ML19344E105
Person / Time
Site:	Fort Saint Vrain
Issue date:	08/05/1980
From:	Gahm J PUBLIC SERVICE CO. OF COLORADO
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19344E103	List: 05000267/LER-1980-036, Forwards LER 80-036/03L-0 05000267/LER-1980-036-03, /03L-0:on 800706,during Rise to Power & Outpassing of Moisture from Circulator buffer-mid-buffer Upset & cross-tower Leakage of Buffer Helium Dryer Due to HV-21352. Valve Disc Replaced by Brass Model
References
LER-80-036-03L, LER-80-36-3L, NUDOCS 8008260636
Download: ML19344E105 (1)

LER-1980-036, /03L-0:on 800706,during Rise to Power & Outpassing of Moisture from Circulator buffer-mid-buffer Upset & cross-tower Leakage of Buffer Helium Dryer Due to HV-21352. Valve Disc Replaced by Brass Model

Event date:
Report date:
2671980036R03 - NRC Website

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O NRC fa'.M 366 U.S. NUCLEAR REGULATORY COMMISSION (7.'i71 LICENSEE EVENT REPORT CONTROL 8 LOCK: l l

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60 61 DOCKET NUMBER 6a 69 EVENT DATE 74 75 REPORT CATE 80 EVENT DESCRIPTION AND PROB ABLE CONSEQUENCES h to12l l On July 6, 7, and 8,1980, cperation in a degraded mode of LCO 4.2.10 and LCO 4.2.11 1

,o,3, l resulted during a rise-to-pow (r and the outgassing of moisture from a previous circu-I l o 141 l lator buffer-mid-buffer upset and cross-tower leakage of the buffer helium dryer due i loISII to HV-21352. These conditions are reportable per Fort St. Vrain Technical Specifi-l I o is i I cation AC 7.5.2(b)2.

Related events are RO's 76-06. 77-02. 77-13. 78-11. 78-39.79-31L I o I 7 l l 80-02, 80-19, and 80-33.

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40 el 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS l i 1 o j l Residual moisture from a previous circulator trio and leakane east MV-21352 resulted 1 I i I i l I in high primarv coolant moisture. Velan Model P-33876-N/78R valve disc reelaced hv

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