ML20029A546

Special Rept 91-01:on 910113,inoperable Condenser Bay Sprinkler Sys 2 Not Restored within 14 Days.Caused by Steam Leak in Vicinity of Sprinkler Head.Sprinkler Will Be Replaced During Refueling Outage 13R

ML20029A546
Person / Time
Site:	Oyster Creek
Issue date:	02/12/1991
From:	J. J. Barton GENERAL PUBLIC UTILITIES CORP.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
91-01, 91-1, C321-91-2032, NUDOCS 9102250201
Download: ML20029A546 (2)

Text

_ - _ _ _ _ -

t -

- GPU Nuclear Corporation 4 Nuclear  ;;:'en:r38" f orked River, New Jetsey 087310388 009 971 4000 Writer's Direct Dial Numbef:

February 12, 1991 C321-91-2032 U.S. Nuclear Regulatory Commission Attna Document Control Desk Washington, D.C. 20555 Dear Sir Subjects Oyster Creek Nuclear Generating Station Docket No. 50-219 Special Report 91-01 Enclosed is Special Report 91-01 which is submitted in accordance with Technical Specification 3.12.C.

If any questions or comments should arise, please contact Mr. Michael lleller, Oyster Creek Licensing Engineer at 609-971-4680.

ary truly yours, f/ .

/

. c. Barton Di ctor, Oyster Creek JJB/ Mil /jc Enclosure cci Admtnistrator Region 1 Senior NRC Resident Inspector Oyster Creek NRC Project Ma sger 9102250201 910212 /N PDR s

ADOCK 05000219 PDR /.l l' g (

i GPU Nuclear Corporation is a sutniciary of the General Public Utilities Corporation 0,

c', ,,.* . 9, 3

r OYSTER CREEK NUCLEAR GENERATING OTATION Forked River, New Jersey 00731 Special Report 91-01 Report tate: 2/12/91 l

l Occurrence Date: 1/13/91 1

l Identifiggtion of occurrence )

i Inoperable condenser bay sprinkler system #2 was not rentored to operable '

status within fourteen (14) days ao required by Technical Specification 3.12.c.3.

Deecription of occurrence:

one of the fire protection automatic oprinklers on oprinkler systems #2 opened. Thero was no fire present to cause operation of the sprinkler. To stop the water discharge, the manual centrol valve was closed.

Analysis of occurrenqm The 165'F temperature rating of the sprinklers originally installed can be

' exceeded when a steam leak occuro in the condonner bay. The cause of thia

-occurrence is attributed to a steam leak in the vicinity of the oprinkler head.

gorrective Action:

The requiromonte of Technical Specification 3.12.C.2 regarding fire watches during periodo of inoperability woro estab11 shod and are being implemented. The extended period of inoperability is necompary due to the

.condonner bay being a locked high radiation area. The 165'F rating oprinklers are being replaced by 212'F rated sprinklera as failuron of this nature occur. The specific eprinkler which opened in this case will be replaced during the 13R refueling outage. This will allow rostoration of sprinkler system #2 to full automatic operation.

(C32b9b2032)

, , - - - , ,, - , < , . , . - - ,, ,