05000267/LER-1981-032, Forwards LER 81-032/03L-0.Detailed Event Analysis Encl

Forwards LER 81-032/03L-0.Detailed Event Analysis Encl

ML20009A524
Person / Time
Site:	Fort Saint Vrain
Issue date:	05/28/1981
From:	Warembourg D PUBLIC SERVICE CO. OF COLORADO
To:	Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML20009A525	List: 05000267/LER-1981-032, Forwards LER 81-032/03L-0.Detailed Event Analysis Encl 05000267/LER-1981-032-03, /03L-0:on 810428,hot Reheat Snubber HRS-244 Found Inoperable.Caused by Empty Hydraulic Oil Reservoir Due to Leaking Elbow Fitting.Fitting Tightened,Reservoir Refilled & Snubber Returned to Svc
References
P-81157, NUDOCS 8107130271
Download: ML20009A524 (5)

LER-1981-032, Forwards LER 81-032/03L-0.Detailed Event Analysis Encl

Event date:
Report date:
2671981032R00 - NRC Website

text

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Public servlee iconipany e cone 1medo l

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l May 28, 1981 i

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Unit No, 1 A

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Mr. Karl V. Seyf rit, Director s'

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Region IV xj /~ ; g f\\}

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Office of Inspection and Enforcement Ms 611 Ryan Plaza Drive Suite 1000 Arlington, Texas 76012

Reference:

Facility Operating License l

No. DPR-34 l

Docket No. 50-267 l

Dear Mr. Seyfrit:

I Enclosed please find a copy of Reportable Occurrence Report No. 50-207/

l 81-032, Final, submitted per the requirements of Technical Specification l

AC 7.5.2(b)2.

Also, please find enclosed one copy of the Licensee Event Report for Reportable Occurrence Report No. 50-267/81-032.

Very truly yours,

}'Et.w~$

Don Warembourg Manager, Nuclear Production DW/cls Enclosure cc: Director, MIPC f

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8107130271 810528 l

PDR ADOCK 05000267 S

PDR

5-O aCCL'3RENCE REPng; DISTRI3tTIOt Nurber of Cartes

< pa r t me n t o f E n e r gy - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

1 (P Letter)

San Francisco 0perations Of fice Atta: California Patent Group 1333 3roat.ay Oakland, California 94612 De p a r t men t o f E n e r gy - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

1 (P Letter)

Mr. Glen A. Newby, Chief

?.!R 3rcnch Divisien of Nuclear Power Development Mail Station 3-107 Washington, D.C.

20545 De p a r tme nt o f Ene r gy - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

1 (P Letter)

Atta: Project Manaaer 110 West A Street, Suite 460 San Diego, California 02101 Mr. Karl V. Seyf rit. Director -------------------------

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(Original of P Letter Region IV and Copy of LER)

Of fice of Inspection and Enforcement Nuclear Regulatory Co=nission 611 Ryan Plaza Drive Suita 1000 Arlington, Texas 76012 Director - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

1 (P Letter, LER)

Of fice of Management Information and Program Control U. S. Nuclear Regulatory Commission Washington, D.C.

20555 Mr. iicnard Phelps - - - - - - - - - - - - - - - - - - - - - _ - - - - - - - - -

Iq (Orizinal of FPLG Letter FS't, GA. Site plus Two Copies, One Rep re s e n t ative Copy of P Le tte r. One General Atomic Conpany Copy of LER)

P. O. Sox 426 PIatteville, Colorado 30651 M r. S i l l La va le e - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

1 (P Letter, LER)

';uclear Safety Analysis Center 3412 Hillview Avenue P. O. Box 10412 Palo Alto, California 94303 NRC Resident Site !nspector --------------------------

1 (P Letter, LER) r,

1 REPORT DATE:

May 28, 1981 REPORTABLE OCCURRENCE S1-032 ISSUE O CCCURRENCE DATE:

Acril 28. 1981 Page 1 of 3 FORT ST. VRAIN NUCLEAR GENERATING STATION PUBLIC SERVICE COMPANY OF COLORADO 16E05 WELD COUNTY ROAD 19 1/2 PLATTEVILLE, COLORADO 80651 REPORT NO. 50-267/81-032/03-L-0 Final I

IDENTIFICATION OF OCCURRENCE:

Hot reheat snubber HRS-244 was observed to be inoperable with the plant operating at power. This constitutes operation in a degraded made of LCO 4.3.10 and is reportable per Fort St. Vrain Technical Specification AC 7.5.2(b)2.

t tVENT

DESCRIPTION

On April 28, 1981, with the plant operating at 70% thermal power and 220 MWe, the oil reservoir for hot reheat snubber HRS-244 was observed to be empty.

Because the oil reservoir was empty, the snubber was determined to be inoperable.

CAUSE

DESCRIPTION:

The cause for the snubber being inoperable was a leak at the elbow fitting where the reservoir ties into the snubhar valve block, which drained the reservoir.

(See Figure 1)

CORRECTIVE ACTION:

The snubber was removed from service, "0" rings were cleaned and replaced, and fittings were tightened.

The snubber reservoir was filled, and the snubber was returned to service.

l Because Reportable Occurrence No. 50-267/81-026 cited four inoperable snubber:, the total number of inoperable snubbers found during this surveillance period is five, and per SR 5.3.8(a), the surveillance period has been adjusted to 62 days.

No further corrective action is anticipated or required I

j REPORTABLE OCCURRENCE 81-032 ISSUE 1 Page 2 of 3 i

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REPORTABLE CCCURRENCE 81-032 ISSUE O Page 3 of 3 Prepared By:

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d Paul Moore Technical Services Technician Reviewed By:

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W. G171?n iechnical Services Supervisor Reviewed By:

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Frank M. Matnie. /

Operations Manager l

Approved By:

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Con Waremcourg g

Manager, Nuclear Procuction l

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