05000416/LER-1983-128, Updated LER 83-128/01X-1:on 830912 During Routine Maint,Two fire-rated Penetrations Found Unsealed.Caused by Procedural Inadequacy.Penetrations Resealed

Updated LER 83-128/01X-1:on 830912 During Routine Maint,Two fire-rated Penetrations Found Unsealed.Caused by Procedural Inadequacy.Penetrations Resealed

ML20082U226
Person / Time
Site:	Grand Gulf
Issue date:	12/06/1983
From:	Abraham W, Dale L MISSISSIPPI POWER & LIGHT CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
AECM-83-0773, AECM-83-773, LER-83-128-01X, LER-83-128-1X, NUDOCS 8312160276
Download: ML20082U226 (4)

LER-2083-128, Updated LER 83-128/01X-1:on 830912 During Routine Maint,Two fire-rated Penetrations Found Unsealed.Caused by Procedural Inadequacy.Penetrations Resealed

Event date:
Report date:
4162083128R00 - NRC Website

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SUPPLEMENTARY INFORMATION TO l LER 83-128/01 X-1 Mississippi Power & Light Company Grand Gulf Nuclear Station - Unit 1 Docket No. 50-416 Technical Specification Involved: 3.7.7 Reported Under Technical Specification: 6.9.1.12.b Event Narrative:

This is an update to a previous report submitted on September 26, 1983. The event for which the report was submitted is described in the following paragraphs.

On September 12, 1983, maintenance personnel performing routine work noted that two fire rated penetrations in the Control Building at 111 feet elevation were unsealed. Fire watches were established in accordance with Technical Specification 3.7.7 upon notification to Operations. _ Material Non-Conformance Report (MNCR) Number 892-83 was issued to track correction of the deficiency.

Penetration CE428B, in the Control Building / Turbine Building wall at 111 feet elevation, was verified closed during the Control Building penetration walkdown performed from December 10, 1982,- to February 24, 1983. The penetration was apparently opened during more recent maintenance work. Penetration CE77E is a Control Room floor. penetration in panel P739.

Programmatic controls, to require notification of and authorization by the Shift Superintendent / Supervisor prior to opening a penetration, were implemented.

The penetrations were resealed and the Limiting Conditions for Operation (LCOs) were lifted on September 17, 1983. This is submitted as a final report.

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E MISSISSIPPll POWER & LIGHT COMPANY

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Helping Build Mississippi P. O. B OX 164 0. J A C K S O N. MIS SIS SIP PI 3 9 2 0 5

.3 CEC 13 A 9 pq9ber 6,1983 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 Update Report - Fire Rated Penetrations CE428B and CE77E Found Unsealed LER 83-128/01 X-1 AECM-83/0773 This letter subnits an update to a previous report submitted on September 26, 1983. The event for which the report was submitted occurred on September 12, 1983, during the perfornance of routine maintenance work, when two control Building fire rated pen'etrations were found unsealed. Fire watches were established upon discovery in accordance with Technical Specification 3.7.7.

This was reported pursuant to Technical Specification 6.9.1.12.b.

Our investigation into the cause and corrective actions for the event are complete. This is a final report. Attached is LER 83-128/01 X-1 with Supplementary Information.

Yours truly, L. F. Dale Manager of Nuclear Services EBS/SHH: sap Attachnent cc: (See Next Page) n r:F K I M C T Y Q2 5 T'

Member Middle South Utilities System

~

AECM-83/0773

- MISSISSIPPI POWER Q LIGHT COMPANY cc: Mr. J. B.' Richard (w/a)

Mr. R. B. McGehee (w/o)

Mr. T. B. Conner (w/o)

Mr. G. B. ' Taylor (w/o)

Mr. Richard C. DeYoung, Director (w/a)

Office of Inspection & Enforcement U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Document Control Desk (w/a)

U. S.- Nuclear Regulatory Connaission Washington, D. C. 20555 1

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