PNO-III-91-054, on 911222,36-inch Fiberglass Pipe Carrying Circulating Cooling Water from Cooling Towers to Plant Broke Outside Turbine Bldg.Leak Subsequently Stopped When Operators Closed Valve in Broken Line

PNO-III-91-054:on 911222,36-inch Fiberglass Pipe Carrying Circulating Cooling Water from Cooling Towers to Plant Broke Outside Turbine Bldg.Leak Subsequently Stopped When Operators Closed Valve in Broken Line

ML20203C228
Person / Time
Site:	Perry
Issue date:	12/23/1991
From:	Greenman E, Lanksbury R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
To:
References
PNO-III-91-054, PNO-III-91-54, NUDOCS 9712150260
Download: ML20203C228 (2)

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. w a y1 09:44 700 750 57.ni 001 PRELIMINARY NOTIFICATION OF EVEf,T OR UNUSUAL OCCURRENCE PNO-III-91-54 Dato December 23, 1991 ,

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. fj) y )) w b;<y lp a. I ttcA h l This preliminary notification constitutes EARLY notice of events of POSS!BLE safety or l ublic interest significance. The information is as initially received without O'iarification or evaluatic,n, and is basically all that is known by the Region !!!

t l V staff on this date, j Facility. Cleveland Electric Licensee Emergor.cy_ Classification 111uminating Co. General Emergency sTte Aree Emergency _

Perry Unit 1 Alert~~ X Unusual Event _ N/A Perry, Ohio Docket No.60-440 y Sub. ject: DREAX IN CIRCULATING WATER PIPE OUTSIDE PLANT l On December lass pipe carrying circulatin cooling water from the cooling 22,1991,a36-inchfiberfrokeoutsidetheturbinebulling.

towers to the plant Water frcm the pipe break caused some minor floodtag of areas inside the pleit. The leak was i subsequently stopped when operators closed a valve in the broken line. l I

Reactor operators manually scra med the reactor from 100 percent power at 2:05 a.m.

(EST). An Alert under the licensee's emergency plan was declared at 2:59 a.m. The plant was placed in cold shutdown and the Alert classification was terminated at i 11:51 a.m. on December 22, 1991. i The resident inspectors immediately responded to the plant. Initial review by the resident inspectors and by plant personnel indicated that no safety-related equipment tas affected by the flooding. Some non-safety-related equipment, including lightit.g l end radiation monitoring instruments, was affected. The resident inspectors initially  !

cported less than an inch of water cn the floor in the basement of the auxiliary l u11 ding and other plant areas with some water dripping down from overhead. No water I tas observed in rooms containing Emergency Core Cooling System equipment.

Some radioactive contamination of basement floor areas in the auxiliary cnd ,

intermediate buildings resulted t' rom floor drains backing up because of the flooding. Contamination levels were in the range of 10,000 to 20,000 i disintegrations per minute.

DISTRIBUTION:

HEADQUARTERS OFFICES REGIONS MAIL TO:

The Chairman HMSS Region I Dr.S (Orig)

Comm. Rogers GPA:SP- Region II DOT (Trans.

Comm. Curtiss GPA:PA Region IV Only)

Comm. Remick GPA:CA Region V Comm. de Planque GPA:CA ED0 *0!G Gen. Counsel *ASLAP FAX TO:

NRR Research INPO NSAC LIC

-AEOD 1RM NRC OP3TIR Enforcement ACRS PDR(8/634-3343)

• Denotes a Displaywriter/PC not an IBM 5520 Terminal.

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Q Rev. 10/23/90 f9 g

h21g60911223 PNO-III,-91-054 PDR

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' PRELIMINARY.WOTIFICATION 0F EVENT OR UNUSUAL OCCURRENCE S -PHO-I!!-91-54 Date Decemb:r 23,-19911 d, . o;

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T Segfon!!!(Chicago)'staffedits: Incident-ResponseCenter,andheadquarterspersonnel, monitored the event. An Augmented Inspection Team (AIT) was dispatched on December-L22.-' Team members . include four rejitone-based Inspectors, the resident inspector,--and

-an Office of Nuclear Reactor =pegu lation plant systems specialist.

The State of Ohio was notified of this event. As called for in the state energency

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plan. . state personnel staffed the state Emergency Operations Center. end each of-three <

counties staffed.their centers.

, .Bothithe licerses and the NRC issued news announcements. -The:information-in.this-Preliminary Notification has been reviewed by licensen management, The Headquarters Operations Center was notified of tnis incident by the-11cer.see at l

-3:09 a.m. (EST) on December 22, 1991. This information is current as of 8:00 a.m. on  !

December 23, 1991. l i

CONTACT:: R. Lanksbury f- f&kh -~

E. Greenman 388-5578 388-5518 1

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