ML20040B801

Forwards LER 81-074/03L-0.Detailed Event Analysis Encl

ML20040B801
Person / Time
Site:	Fort Saint Vrain
Issue date:	01/13/1982
From:	Fuller C, Tramp P, Warembourg D PUBLIC SERVICE CO. OF COLORADO
To:	Jay Collins NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML20040B802	List: ML20040B801 ML20040B808
References
P-82018, NUDOCS 8201260421
Download: ML20040B801 (3)

Text

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16805 Road 19 1/2, Platteville, Colorado 80651-9298 January 13, 1982 Fort St. Vrain Unit No. 1

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&D M, R E C 8 V E D h Mr. John T. Collins, Regional Administrator JAN 2 51982*  %

Region IV C u ncm mna rmea Nuclear Regulatory Commission 611 Ryan Plaza Drive

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Suite 1000 4 g Arlington, Texas 76011 G)

Reference:

Facility Operating License No. DPR-34 Docket No. 50-267

Dear Mr. Collins:

Enclosed please find a copy of Reportable Occurrence Report No. 50-267/81-074, Final, submitted per the requirements of Technical Specification AC 7.5.2(b)2.

Also, please find enclosed one copy of the Licensee Event Report for Reportable Occurrence Report No. 50-267/81-074.

Very truly yours, Os ,, du em b. uy h; "I'lntf "Y%B~L Don Warembourg Manager, Nuclear Production DW/c1s Enclosure cc: Director, MIPC

(-'s 61 8201260421 820113 /

PDR ADOCK 05000 S

REPORT DATE: January 13, 1982 REPORTABLE CCCURRENCE B1-074 ISSUE 0 OCCURRENCE DATE: December 14 1981 Page 1 of 2 FORT ST. VRAIN NUCLEAR GENERATING STATION PUBLIC SERVICE COMPANY OF COLORADO 16805 WELD COUNTY ROAD 19 1/2 PLATTEVILLE, COLORADO 80651-9298 REPORT NO. 50-267/SI-074/03-L-0 Final IDENTIFICATICN OF CCCURRENCE:

On Decemher 14, 1931, while the reactor was in a shutdown condition, Class I hydraulic sheck suppressor CRS-219 was found to be inoperable. Since the reactor had been operated since this snubber was last successfully tested, the snuccer must be considered to have been inocerable when the reactor was at power.

This is a cegraded mode of LCO d.3.10 and is reportable per Fort St.

Vrain Technical Specification AC 7.5.2(b)2.

EVENT DESCRIPTION:

With the plant shutdown for maintenance activities, plant personnel observed cold reheat snubber CRS-219 to be inoperable. The lower eyebolt had been displaced from the mounting bracket allowing the snubber to swing freely from the upper mounting bracket.

CAUSE DESCRIPTICN:

While the exact cause of the occurrence cannot be determined, one of the two eyebolt cotter pins was found to be missing, which, along with pipe movement, could have allowed the displacement of the eyebolt from its mounting.

CORRECTIVE ACTION:

The eyebolt cotter pins were replaced with new and slightly larger cotter pins when re-assembling the snubber. A general inspection, following re-assembly, indicated that no other external physical damage had been incurred, and CRS-219 was returned to service as operable.

No further corrective action is anticipated or reauired.

l

REPCRTABLE CCCURRENCE 81-074 ISSUE O Page 2 of 2 Prepared By: '

Paul A. Trcmp Technicai Services Technician Reviewed By: ' l/l f n Ch5rle's Fuller ifYb Technical Services Ergineering Supervisor l

Reviewed By: M Ecdi tr70.' #iTi V Station Manager Aoprovec By: On wae,sa ,c L m 2 m eg _ q Don Warecoeurg Manager, Nuclear Production