05000344/LER-1981-027, Forwards LER 81-027/03L-0.Detailed Event Analysis Encl

Forwards LER 81-027/03L-0.Detailed Event Analysis Encl

ML20033B675
Person / Time
Site:	Trojan File:Portland General Electric icon.png
Issue date:	11/25/1981
From:	Yundt C PORTLAND GENERAL ELECTRIC CO.
To:	Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML20033B676	List: 05000344/LER-1981-027, Forwards LER 81-027/03L-0.Detailed Event Analysis Encl 05000344/LER-1981-027-03, /03L-0:on 811027,inadequate Implementation of Order Resulted in Tag Out of Emergency Diesel Generator in Opposite Train Intended for Snubber Replacement.Caused by Communication Breakdown
References
CPY-923-81, NUDOCS 8112010632
Download: ML20033B675 (3)

LER-1981-027, Forwards LER 81-027/03L-0.Detailed Event Analysis Encl

Event date:
Report date:
3441981027R00 - NRC Website

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g Portland General Electric Company Trojan Nuclear Plant P.O. Box 439 g

Rainier, Oregon 97048 U

November 25, 1981 (503) S56-3713 y

CPY-923-81 Mr. R. H. Engelken, Director US Nuclear Regulatory Commission Region V - Suite 210 1450 Maria Lane Walnut Creek, CA 94596-5368

Dear Sir:

In accordance with the Trojan Plant Operating License, Appendix A, US NRC Technical Specification 6.9.1.9.c, attached is Licensee Event Report No. 81-27, concerning a situation where inadequate communication and implementation of administrative controls resulted in the tag out of the Emergency Diesel Generator in the opposite train than intended by Maintenance for exhaust line seismic snubber replacement.

This is considered to be an isolated incident and there was no danger to the plant or public health and safety.

Sincerely, Y

% C. P. Yundt General Manager CPY/MLD na Attachments c: LER Distribution List

* '753 c, Z1 MJ 17, ACd IEl

((Si C31 8112010632 s11125 03/EEU

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PDR ADOCK 05000344 S

PDR

REPORTABLE OCCURRENCE 1.

Report No.:

81-27 2.

a.

Report Date:

November 27, 1981 b.

Occurrence Date: October 27, 1981 3.

Facility: Trojan Nuclear Plant, PO Box 439, Rainier, Oregon 97048 4.

Identification of Occurrence:

Inadequate implementation of administrative controls which threaten to cause a reduction ir. the degree of redundancy in Engineered Safety Features Systems occurred when insufficient communication between work groups resulted in the tag out of the West Emergency Diesel Generator (EDG), while snubber replacement work was being performed on the East EDG.

5.

Conditions Prior to Occurrence:

Prior to the occurrence the plant was in Mode 1 et 100% power.

6.

Description of Occurrence:

A clearance request was made by contractor personnel to tag out the West EDG for exhaust line snubber replacement. Later, while on a plant tour, the Shift Supervisor noticed that the work was being performed on the East EDG.

He immediately had the tags cleared on the West EDG and verified it to be operable. Tags were then posted on the East EDG and the snubber replacement was completed satis-factorily.

At no time were both EDGs inoperabic since only one exhaust line snubber was removed at a time.

7.

Designation of Apparent Cause of Occurrence:

The cause of the occurrence was a breakdown in communication between scheduling, contract and operations personnel. Clearance for the EDG was not obtained by individuals directly involved in the mainte-nance and clarification of whether the East or West EDG was to be tagged was not made between work groups.

l 8.

Significance of Occurrence:

This is considered to be an isolated occurrence. Architect Engineer j

analysis has confirmed that the East EDG was operable for the duration l

of the occurrence, therefore, there was no ettect on plant or public safety.

I i

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9.

Corrective Action

Corrective action taken was to counsel the individuals involved

. emphasizing the need for procedural compliance and proper communication between work groups. The Administrative procedures involved in this occurrence were reviewed to ensure that proper compliance would prevent a similar occurrence. The contractor has been instructed-to have the workman's foreman personally verify a tag-out prior to commencement of work.

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