05000311/LER-1982-026, Forwards LER 82-026/03L-0.Detailed Event Analysis Encl

Forwards LER 82-026/03L-0.Detailed Event Analysis Encl

ML20052G727
Person / Time
Site:	Salem
Issue date:	05/05/1982
From:	Midura H Public Service Enterprise Group
To:	Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20052G728	List: 05000311/LER-1982-026, Forwards LER 82-026/03L-0.Detailed Event Analysis Encl 05000311/LER-1982-026-03, /03L-0:on 820418,during Routine Operation,Control Room Operator Noted RPI 1C4 More than 12 Steps Lower than Bank Demand Position Indicator.Caused by Instrument Drift. RPI Recalibr & Tested Satisfactorily
References
NUDOCS 8205180610
Download: ML20052G727 (3)

LER-1982-026, Forwards LER 82-026/03L-0.Detailed Event Analysis Encl

Event date:
Report date:
3111982026R00 - NRC Website

text

.

O PSIEG Public Serv co Ekstric and Gas Cornpany P.O. Box E Hancocks Bridge, New Jersey 08038 Salem Generating Station May 5, 1982 Mr.

R.

C. Haynes Regional Administrator USNRC Region 1 631 Park Avenue King of Prussia, Pennsylvania 19406

Dear Mr. Haynes:

LICENSE NO. DPR-75 DOCKET NO. 50-311 REPORTABLE OCCURRENCE 82-026/03L Pursuant to the requirements of Salem Generating Station Unit No.

2, Technical Specifications, Section 6.9.1.9.b, we are submitting the Licensee Event Report for Reportable Occurrence 82-026/03L.

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

Sincerely yours,

//.

Mdu, H. J. Midura General Manager -

Salem Operations RF:ks CC:

Distribution 820 5180 4/o I

_ The Energy People 3

L 95 2 '1 (2rm) 11-81

Report Number:

82-026/03L Report Date:

05-05-82 Occurrence Date:

04-18-82 Facility:

Salem Generating Station, Unit 2 Public Service Electric & Gas Company Hancocks Bridge, New Jersey 08038 IDENTIFICATION OF OCCURRENCE:

No. 1C4 Rod Position Indicator - Inoperable.

This report was initiated by Incident Report 82-088.

CONDITIONS PRIOR TO OCCURRENCE:

Mode 1 - Rx Power 49% - Unit Load 530 MWe DESCRIPTION OF OCCURRENCE:

On April 18, 1982, during routine operation, the Control Room-Operator noticed that No. 1C4 Rod Position Indicator (RPI) was more than 12 steps lower than the bank demand position indicator.

No. IC4 RPI was declared inoperable at 0400 hours0.00463 days <br />0.111 hours <br />6.613757e-4 weeks <br />1.522e-4 months <br />, and Action Statement 3.1.3.2.1.a was entered.

This occurrence constituted operation in a degraded mode in accordance with Technical Specification 6.9.1.9.b.

DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:

No. 1C4 RPI had drif ted out of calibration.

ANALYSIS OF OCCURRENCE:

Technical Specification 3.1.3.2.1.a requires that in modes 1 or 2, with a maximum of one RPI per bank inoperable, either:

1.

Determine the position of the non-indicating rod (s) j indirectly by the moveable incore detectors, at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />, and immediately after any motion i

of the non-indicating rod which exceeds 24 steps in one direction, since the last determination of the rod's position, or 2.

Reduce thermal power to less than 50% of rated thermal power within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />.

i 1

LER 82-026/03L,

CORRECTIVE ACTION

Reactor power was already less than 50%, in compliance with Action Statement 3.1.3.2.1.a.

The RPI was properly recalibrated and satisfactorily tested.

At 1000 hours0.0116 days <br />0.278 hours <br />0.00165 weeks <br />3.805e-4 months <br />, April 18, 1982, No. 1C4 RPI was declared operable, and Action Statement 3.1.3.2.1.a was terminated.

FAILURE DATA:

Bailey Instrument Co.,

Inc.

Bailey Edgewise Indicator Model RY2 Prepared By R.

Frahm

/-

^

P V General Manager Salem Operations SORC Meeting No.

82-47