PNO-III-86-043, on 860510,containment Smoke Alarm Received in Control Room Re Smoke in Forced Circulating Pump Room 1B. Caused by Oil Used on Bypass Valve Dripping on Heated Pipe Insulation.Insulation Replaced

PNO-III-86-043:on 860510,containment Smoke Alarm Received in Control Room Re Smoke in Forced Circulating Pump Room 1B. Caused by Oil Used on Bypass Valve Dripping on Heated Pipe Insulation.Insulation Replaced

ML20197E396
Person / Time
Site:	La Crosse File:Dairyland Power Cooperative icon.png
Issue date:	05/12/1986
From:	Guldemond W, Landsman R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
To:
References
PNO-III-86-043, PNO-III-86-43, NUDOCS 8605150246
Download: ML20197E396 (1)

Dm e PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-III-86-43 May 12, 1986 This preliminary notification constitutes EARLY notice of event of POSSIBLE safety or public interest significance. The information is as initially received without verification or evaluatior3 and is basically all that is known by the Region III staff on this date.

Facility: Dairyland Power Cooperative Licensee Emergency Classification:

LACBWR Notification of an Unusual Event La Crosse, WI 5460; Alert Site Area Emergency Docket No. 50-409 General Emergency XX Not Applicable -

SUBJECT:

SM0XING INSULATION IN CONTAINMENT On May 10, 1986, while the unit was starting up, a containment smoke alarm was received in the control room. The reactor was manually shut down. Licensee personnel investigated and found smoke in the IB forced circulating pump room. The smoke was from insulation on the discharge piping. The smoldering fire was extinguished by licensee personnel with no apparent damage to any equipment. The smoke was determined to have been caused by penetrating oil, used on a bypass valve during the recent outage, which had dripped on the pipe insulation. Heat from the pipe caused the oil to begin smoking, but there were no apparent flames.

The licensee has replaced the insulation. After conferring with Region III (Chicago), the licensee resumed plant startup activities.

The State of Wisconsin will be informed.

Region III was notified of the fire at 3:07 a.m., May 10,1986.

This information is current as of 1:00 p.m. May 12,1986.

/ '

CONTACT: La s W. u e on FTS 388-5587 FTS 388-5574 DISTRIBUTION:

H. St. ED0 NRR E/W Willste Mail: ADM:DMB Chairman Palladino PA IE NMSS D0T: Trans only Comm. Zech ELD OIA RES Comm. Bernthal AE0D Comm. Roberts Comm. Asselstine ACRS SP M Regional Offices SECY INPO 3' ') NSAC 9.U)19h*

CA RIII .esident Office PDR Licensee: t/ 'O 1,L (Corp. Office - Reactor Lic.

Only) 8605150246 860512 h -Ik 86-043 PDR 0 I ZEM