ML19327B615

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Responds to Generic Ltr 89-16, Hardened Vent, by Encouraging Licensees to Voluntarily Install Hardened Vent Under 10CFR50.59
ML19327B615
Person / Time
Site: Hatch  Southern Nuclear icon.png
Issue date: 10/24/1989
From: Hairston W
GEORGIA POWER CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
GL-89-16, HL-782, NUDOCS 8911020278
Download: ML19327B615 (2)


Text

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l Geova Power Company -

f. g< 333 Paedmore Aenue' '
- , Ananta. Googa 30300 Tetophone 404 626 3195 l Mading Address  ;

40 inverness Center Parkway 1 Post Office Box 1295 l B.trningham Alabama 35201 .i 4 Telephone 205 868 5501 r Inc .% wen ewnc systern W, G. Hairston.111 Senior %ce President Nuclear Operat;ons l HL-782 ,

0334V  ;

I october 24, 1989 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Hashington, D.C. 20555-a PLANT HATCH - UNITS 1, 2 NRC DOCKETS 50-321, 50-366 '

OPERATING LICENSES.DPR-57, NPF ,

' GENERIC LETTER 89-16 .

HARDENED VENT l Gentlemen: -

On September 1, 1989, the NRC staff issued Generic LL'etter 89-16 to inform the- owners of BHR plants with Mark I containments of the NRC program for disposition of. the issues related to the Mark I Containment  :

Performance Improvement Program. This letter encouraged .' licensees to voluntarily install a hardened vent under 10 CFR 50.59. .

Our review of SECY 89-017 indicates that the ' primary . benefit of the hardened vent is the reduction of risk associated with the TN (long term -

loss of decay heat ~ removal) sequence.

It is the intention of Georgia {

Power Company to install a hardened vent to reducen the risk of the TH sequence at Plant E. I. Hatch, Units 1 and 2. Georgia Power . Company will be working with the BHR Owners' Group to develop - generic general and specific design critoria. It is anticipated that. the' design criteria will be available for NRC review by April 30, 1990. Specific design-details will be available as Georgia Power Company completes the appropriate portions of the IPE for Plant Hatch and'. studies the l possibility of systems' interaction effects- between the vent and the:

existing plant design. The hardened ' vent will be . insta11ed' on: Unit 1 l before startup from the end of. cycle.14 refueling outage and on Unit 2- i before startup from the end of cycle 10 refueling outage.

It is the belief of Georgia Power Company that; the risk.~of the'TH  !

sequence is Ealready low. The installation of 'the hardened vent: will further reduce risk of this sequence. and make a significant contribution' ..

'f to closing the NRC Mark.I Containment Performance Improvement Program.- ,  ;

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' beorgia Power b U.S. Nuclear Regulatory Comission october 24, 1989 Page Two If you hwe any questions in this regard, please contact this office.

Sincerely, td./b. $"m

' H. G. Hairston, III JKB/eb c: Georaia Power ComDany Mr. H. C. Nix, General Manager - Puclear Plant Mr. J. D. Heidt Manager Engineering and Licensing - Hatch

GO-NORMS U.S. Nuclesr Reaulatory Comission. Washinaton. 0.C.

Mr. L. P Crocker, Licensing Project Manager - Hatch U.S. Nuclear Regulatory Comission. Region 11 Mr. S. D. Ebneter, Regional Administrator Mr. J. E. Henning, Senior Resident Inspector Hatch l

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