ML20069A702

Ro:On 830127,discovered Water Leak Into Southeast Corner of Diesel Generator Bldg 2-ft Elevation Via Two Fire Barrier Penetration Seals.Caused by Degradation Due to Exposure to Rainwater Originating from Underground Plant Cable Vault

ML20069A702
Person / Time
Site:	Brunswick
Issue date:	03/03/1983
From:	Dietz C CAROLINA POWER & LIGHT CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
BSEP-83-706, NUDOCS 8303160207
Download: ML20069A702 (1)

Text

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CD&L ,

J 1a Carolina Power & Light Company  %  %

mnn m g ~= - mm Q 'jQ Brunswick Steam Electric Plant c.o " :0 l P. O. Box 10429 d,

, Southport, NC 28461-0429 7> 'i

, u; ;3 March 3, 1983 *

. c.P FILE: B09-13510C SERIAL: BSEP/83-706 Mr. James P. O'Reilly, Director -

U. S. Nuclear Regulatory Commission Region II, Suite 3100 101 Marietta Street N.W.

Atlanta, CA 30303 BRUNSWICK STEAM ELECTRIC PLANT, UNIT NO. 1 l LICENSE NOS. DPR-71 DOCKET NOS. 50-325 SPECIAL REPORT PER TECHNICAL SPECIFICATION 3.7.8 j

Dear Mr. O'Reilly:

Routine plant surveillance during unit refueling operations on January 27,

, '1983, revealed water leaking into the southeast corner of the Diesel Generator Building 2' elevation via two fire barrier penetration seals, DG-1-041-18 and DG-1-041-19. In accordance with technical specifications, appropriate fire barrier LCOs were generated to allow repair of the seals.

The seals, which are composed of rock wool, had degraded due to exposure to rainwater originating from an underground plant electrical conduit ~ cable vault. Due to the complexity of the work required to repair the seals, the seven-day specified time frame of each LCO was exceeded. Repair of the subject seals was subsequently completed and they were returned to service on

-February 10, 1983.

As a result of a previous similar reportable event, as reported in l LER 1-83-10, plant Engineering will investigate the water intrusion problem at plant fire barrier penetration seals to determine an applicable fix.

f Very truly.yours, C. R. Diet z, General Manager Brunswick Steam Electric Plant RMP/shb/LETJ03 Enclosure cc: Mr. R. C. DeYoung l.

NRC Document Control Desk o?h UVytC&g,-

8303160207 830303 . g PDR ADOCK 05000325 PDR _

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