05000409/LER-1982-002, Forwards LER 82-002/03L-0.Detailed Event Analysis Submitted

Forwards LER 82-002/03L-0.Detailed Event Analysis Submitted

ML20041D455
Person / Time
Site:	La Crosse File:Dairyland Power Cooperative icon.png
Issue date:	02/19/1982
From:	Linder F DAIRYLAND POWER COOPERATIVE
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20041D456	List: 05000409/LER-1982-002, Forwards LER 82-002/03L-0.Detailed Event Analysis Submitted 05000409/LER-1982-002-03, /03L-0:on 820121,containment Bldg Fire Detection Zone 19 Placed in Bypass.Caused by Spurious Alarm Annunciation Due to Faulty Detector Head Over Msiv.Head Cleaned
References
LAC-8103, NUDOCS 8203050332
Download: ML20041D455 (2)

LER-1982-002, Forwards LER 82-002/03L-0.Detailed Event Analysis Submitted

Event date:
Report date:
4091982002R00 - NRC Website

text

e DlDA/RYLAND h

[k COOPERAT/VE

• PO BOX 817 2615 EAST AV SOUTH = LA CROSSE. WISCONSIN M601 (608) 788 4 000 February 19, 1982 in reply, please refer to LAC-8103 DOCKET NO. 50-409 Hr. James G. Keppler, Regional Director U. S. Nuclear Regulatory Commission Directorate of Regulatory Operations Region 111 799 Loosevelt Road Glen Ellyn, Illinois 60137 SUBJECT: UAIRYLAND POWER COOPERATIVE LA CROSSE BOILING WATER REACTOR (LACBWR) g 4

PROVISIONAL OPERATING LICENSE NO. UPR-45 to REPORTABLE OCCURRENCE NO. 82-02 p

REFERENCES:

(1) LACBWR Technical Specifications, CEWgg Section 6.9.1.9.b

{

MAR 05 k h (2) LACBWR Technical Specifications,

- ag%p

'8 Section 4.2.17

(

moung

Dear Mr. Keppler:

6 In accordance with Reference 1, this letter is to inform you of en o

a degraded mode permitted by a limiting condition for operation, while the plant was in the cold shutdown condition.

Reference 2 requires the fire detection instrumentation for each fire detection zone shown in Table 4.2.17 to be operable whenever equipment in that zone is required to be operable.

At 2217 on January 21, 1982, Fire Detection Zone 19, which covers the Containment Building, was placed in bypass due to several spurious alarms being received.

This action prevented the spurious alarms on Zone 19 from nasking any legitimate alarms on any other fire detection zone. A fire watch patrol was established in accordance with the action statement in Reference 2.

At 0130 on January 22, 1982, the instrumentation covering Fire Detection Zone 19 was returned to normal, but it was bypassed at 0715 due to additional srurious alarms.

The detector head over the Main Steam Isolation Valve, which was causing the alarms, was cleaned and Zone 19 was returned to normal at 1020. Maintenance had been performed in the area during the outage, which may have caused the dirt which accuuulated on the detector head.

A Licensee Event Report (Reference: Regulatory Guide 1.16, Revision 4) is enclosed.

'I kb t

A p

up_s 8203050332 820219

}

PDR ADOCK 05000409 MAR 1 122 S

PDR

Mr. James G. Keppler, Regional Director February 19, 1982 U. S. Nuclear Regulatory Connission LAC-8103 If you have any questions, please contact us.

Very truly yours, DAIRYLAND POWER COOPERATIVE f

4 U-ft.ta+

~

Frank Linder, General Manager FL:LSG:eme Enclosures cc: Director, Office of Inspection and Enforcement (30)

U. S. Nuclear Regulatory Commission Washington, D. C.

20S55 Director, Office of Management Information (3) and Program Control U. S. Nuclear Regulatory Commission Washington, D. C.

20555 NRC Resident Inspector INPO WP-6