ML20005G808

Advises That Compensatory Actions Acceptable to Provide Assurance Secondary Containment Integrity Maintained Throughout Recaulking of Plant Refueling Floor Precast Concrete Panel Walls

ML20005G808
Person / Time
Site:	Hatch
Issue date:	01/11/1990
From:	Crocker L Office of Nuclear Reactor Regulation
To:	Hairston W GEORGIA POWER CO.
References
TAC-75582, TAC-75583, NUDOCS 9001230118
Download: ML20005G808 (3)

Text

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ro UNITED STATES Y

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g NUCLEAR REGULATORY COMMISSION i

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January 11, 1990 I

l Oockets Nos. 50-321 and 50-366 l

i Mr. W. G. Hairston, III Senior Vice President -

l Nuclear Operations Georgia Power Company P. O. Box 1295 Birmingham, Alabama 35201-l

SUBJECT:

SECONDARY CONTAINMENT PRECAST PANEL SEALING (TACS NOS. 75582 i

AND 75583)

The NRC staff has reviewed the Georgia Power Company (GPC) letter of I

December 13,1989, " Request for Information on Secondary Containment Precast Panel Sealing." In.that letter, GPC describes the administrative controls and additional testing that will be implemented during the recaulking of the Plant Hatch Units 1 and 2 refueling floor precast concrete panel walls.

Specifically, d j

you' identified the following actions to be taken-l 1.

A special purpose procedure has been developed that will allow no i

more than 12 linear. feet (approximately 0.13 square feet inleakage.

area) of joint to be stripped without imediately replacing the e

backing materials, and no more than 52 linear feet may be in an unsealed /uncaulked state at any time even with the backing material installed.

2.

Secondary containment integrity will be verified after a few sectiont are resealed and af ter approximately one-third. complete, two-thirds complete, and job completion. This integrity will be verified by the periodic testing of the standby gas treatpent system (SGTS) to demonstrate adequate drawdown capability.

3.

Under no circumstances will any len I

wi.hout backing material in place. gth of joint be left unattended For joints stripped of sealant, sufficient backing will be on hand'for workers to immediately close i

any joint when-directed to do so.

Workers will maintain radio comunications with the control room at all times.

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9001230118 900111 i

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' r. W. G. Harriston, III M 4

Based on the inplementation of the above administrative controls and additional secondary containment integrity testing, and the fact that design calculations for the SGTS drawdown capebility assume a leakage area of 0.13 square feet, the NRC staf f finds the compensatory actions to be taken by GPC acceptable to provide adequate assurance the secondary containnent integrity is maintained throughout the recaulking activity.

If there are questions, please contact me.

Sincerely, Original Signed By:

Lawrence P. Crocker, Project Manager Project Directorate 11-3 Division of Reactor Projects - 1/II Office of Nuclear Reactor Regulation cc: See next page DISTRIBUTION Dochet-File R!ngram NRC & Local PDRs LCrocker PDII.3 Rdg. File Treed SVarga OGC (info. m1y)

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,Pr. W. G. Hairston, III Edwin I. Hatch Nuclear Plant.

Georgia Power Company Units Nos. I and 2 i

ce; Shaw, Pittman, Potts and Trowbridge Mr. R. P. Mcdonald 2300 N Street, N. W.

Executive Vice President -

Washington, D.C.

20037 Nuclear Operations Georgia Power Company Mr. J. T. Beckham P.O. Box 1295 Vice President - Plant Hatch Birmingham, Alabama 35201 Georgia Power Company P.O. Box 1295 Mr. Alan R. Herdt, Chief Birmingham, Alabama 35201 Project' Branch #3 U.S. Nuclear Regulatory Comission Mr. S. J. Bethay 101 Marietta Street, NW, Suite 2900 Manager Licensing - Hatch Atlanta, Georgia 30323 Georgia Power Company P.O. Box 1295 Birmingham, Alabama 35201 i

Mr. H. C. Nix General Manager, Nuclear Plant Georgia Power Company Route 1, Box 439 Baxley, Georgia 31513 Resident Inspector t

U.S. Nuclear Regulatory Comission Route 1, Box 725 Baxley, Georgia 31513 Regional Administrator, Region II U.S. Nuclear Regulatory Comission-t 101 Marietta Street, Suite 2900 r

Atlanta, Georgia 30323

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Mr. Charles H. Badger Office of Planning and Budget Room 610 270 Washington Street, S.W.

Atlanta, Georgia-30334 Mr. J. Leonard Ledbetter Director Environmental Protection Division Department of Natural Resources 205 Butler Street, S.E.,

Suite 1252 Atlanta, Georgia 30334 Chairman Appling County Comissioners County Courthouse Baxley, Georgia 31513 1

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