AECM-83-0541, Updated RO 83-011/1:during 830218-0303,several fire-rated Penetrations Failed to Conform to Design Specs.Caused by Degradation Since Installation.Barriers Will Be Restored by 831015

Updated RO 83-011/1:during 830218-0303,several fire-rated Penetrations Failed to Conform to Design Specs.Caused by Degradation Since Installation.Barriers Will Be Restored by 831015

ML20076L664
Person / Time
Site:	Grand Gulf
Issue date:	09/07/1983
From:	Dale L MISSISSIPPI POWER & LIGHT CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
AECM-83-0541, AECM-83-541, RO-83-011-1, RO-83-11-1, NUDOCS 8309190022
Download: ML20076L664 (2)

Text

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MISSISSIPPI POWER &'OGHT,C'OlVJPANY Helping Build Mississippi * -j[i te411AllddB P. O. B OX 164 0, J AC K S O pMIS SIS SIP PI dd2 0 5 September 7, 1983 EP /g

• NUCLEAR PRODUCTION DEPARTMENT .

U. S. Nuclear Regulatory Commission Region II 101 Marietta St., N.W., Suite 2900 Atlanta, Georgia 30303 Attention: Mr. J. P. O'Reilly, Regional Administrator

SUBJECT:

Grand Gulf Nuclear Station Unit 1 Docket No. 50-416 License No. NPF-13 File 0260/L-835.0 Special Report 83-011/1 -

Update Report - Fire Penetrations Do Not Conform to Original Design Criteria AECM-83/0541 This is an update to a previous report submitted on March 25, 1983. The events for which the report was submitted occurred from February 18 to March 3, 1983, when a special inspection of fire rated penetrations identified several penetrations in the Auxiliary, Control, Diesel Generator, and Turbine Buildings which did not conforn to their design specification. The penetrations were declared inoperable and hourly fire watches were established in accordance with Technical Specification 3.7.7.

The condition does not affect the health and safety of the public and does not constitute a threat to plant safety. Nonconformances include sealing material shrinkage and damming boards not being intact. The nonconformances are due to degradation of the penetrations since their original installation.

Material Nonconformance Reports (MNCR) 134-83 and 103-83 were issued te generate the appropriate action. The barriers are expected to be restored by October 15, 1983. This is a Special Report pursuant to Technical Specification 6.9.2.

Yours truly, YY

/t y L. F. Dale Manager of Nuclear Services EBS/SHH: sap cc: (See Next Page) 9309190022 830907 gpy1CI Ai, COPY 3{

DR ADOCK 05000 Member Middle South Utilities System I/T NA jj

. - *41

, . 's AECM-83/0541 MIMIMIPPI POWER O LI2HT COMPANY cc: Mr.~J. B. Richard

~ Mr. R. B. McGehee Mr. T. B. Conner Mr. G. B. Taylor Mr. Richard C. DeYoung, Director Office of Inspection & Enforcement U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Document Control Desk U. S. Nuclear Regulatory Commission Washington, D. C. 20555

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