05000311/LER-1980-006, Forwards LER 80-006/03L-0

Forwards LER 80-006/03L-0

ML18082A792
Person / Time
Site:	Salem
Issue date:	07/23/1980
From:	Librizzi F Public Service Enterprise Group
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML18082A793	List: 05000311/LER-1980-006, Forwards LER 80-006/03L-0 05000311/LER-1980-006-03, /03L-0:on 800625,residual Heat Removal Pump Was Discovered to Have Been Previously Improperly Assembled. Caused by Either Personnel Error or Procedural Inadequacy. Pump Inspected,Repaired & Reassembled
References
NUDOCS 8007290684
Download: ML18082A792 (2)

LER-1980-006, Forwards LER 80-006/03L-0

Event date:
Report date:
3111980006R00 - NRC Website

text

e OPS~G Public Service Electric and Gas Company 80 Park Place Newark. N.J. 07101 Phone 201 /430-7000 Mr. Boyce H. Grier Director o~ USNRC Off ice of Inspection and Enforcement Region 1 631 Park Avenue King of Prussia, Pennsylvania 19406

Dear Mr. Grier:

LICENSE NO. DPR-75 DOCKET NO. 50-311 REPORTABLE OCCURRENCE 80-06/03L J.uly 23, 1980 Pursuant to the requirements of Salem Generating Station Unit No. 2 Technical Specifications, Section 6.9.1, we are submitting Licensee Event Report for Reportable Occurrence 80-06/03L.

This report is required within thirty (30) days of the occurrence.

Sincerely yours,

- - ~

I l

/

/

, - /L._ t *-:*-]

F. P. Librizzi General Manager -

Electric Production CC:

Director, Office of Inspection and Enforcement (30 copies)

Director, Office of Management Information and Program Control (3 copies) 95-2001 (200M) 2-78

Report Number:

80-06/03L Report Date:

7/23/80 Occurrence Date:

6/25/80 Facility:

Salen Generating Station, Unit 2 Public Service Electric & Gas Company Hancock's Bridge, New Jersey 08038 IDENTIFICATION OF OCCURRENCE:

21 Residual Heat Removal Pump (RHR) Improperly Assembled CONDITIONS PRIOR TO OCCURRENCE:

Construction DESCRIPTION OF OCCURRENCE:

While disassembling 21 RHR Pump to install a modified shaft locking device in accordance with an approved Design Change, it was determined that at some earlier time the pump was assembled improperly.

DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:

Unknown, either personnel error or pr,ocedural inadequacy~

ANALYSIS OF OCCURRENCE:

When disassembling the pump, it was determined that the shaft sleeve was installed such that it's keyway was approximately 30° offset from the shaft's keyway.

The difference in orientation prevented the key from being installed properly after the impeller was positioned on the end of the shaft.

A review of the documentation indicated the pump impeller was last worked on during initial construction in November of 1976 but no other information was available.

CORRECTIVE ACTION

The pump was disassembled and inspected.

It was necessary, prior to reassembly, to "dress" the shaft to compensate for a small amount of galling.

The pump was reassembled corre~tly.

A modification was made to 22 RHR Pump as required under the same DCR.

No abnormalities were found when this pump was disassembled.

FAILURE DATA:

Not Applicable Prepared By M. J. Murphy Manager - 'Salem Gene£ating Station SORC Meeting No.

50-80