ML081420172

Request for Additional Information Regarding Alternative Source Term Application

ML081420172
Person / Time
Site:	Hatch
Issue date:	05/30/2008
From:	Martin R NRC/NRR/ADRO/DORL/LPLII-1
To:	Madison D Southern Nuclear Operating Co
Martin RE, NRR/DLPM, 415-1493
References
TAC MD2934, TAC MD2935
Download: ML081420172 (4)

Text

May 30, 2008 Mr. Dennis R. Madison Vice President - Hatch Edwin I. Hatch Nuclear Plant 11028 Hatch Parkway North Baxley, GA 31513

SUBJECT:

EDWIN I. HATCH NUCLEAR PLANT, UNIT NOS. 1 AND 2, REQUEST FOR ADDITIONAL INFORMATION REGARDING ALTERNATE SOURCE TERM APPLICATION (TAC NOS. MD2934 AND MD2935)

Dear Mr. Madison:

By letter to the U.S. Nuclear Regulatory Commission (NRC) dated August 29, 2006, Southern Nuclear Operating Company, Inc. (SNC, the licensee), proposed to revise the Edwin I. Hatch Nuclear Plant, Units 1 and 2 licensing and design-basis with a full scope implementation of an alternative source term. The NRC staff reviewed SNCs letter dated February 27, 2008 and identified a need for additional information as set forth in the Enclosure.

The NRC staff discussed the above-referenced issue with SNCs staff on May 29, 2008. In consideration of the previous correspondence on this issue, and the schedular issues as addressed in the NRC staffs letter of January 30, 2008, we are requesting that SNC provide a response to this letter within fifteen (15) days, if possible, but no later than thirty (30) days of receipt of this letter.

Sincerely,

/RA/

Robert E. Martin, Senior Project Manager Plant Licensing Branch II-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-321 and 50-366

Enclosure:

Request for Additional Information cc w/encl: See next page

ML081420172 OFFICE NRR/LPL2-1/PM NRR/LPL2-1/LA NRR/SCVB/BC NRR/ITSB/BC NRR/LPL2-1/BC NAME RMartin:nc GLappert RDennig RElliot MWong DATE 05/ 29 /08 05/30 /08 05/28/08 05/30 /08 05/ 30 /08

Enclosure REQUEST FOR ADDITIONAL INFORMATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION EDWIN I. HATCH NUCLEAR PLANT, UNIT NOS. 1 AND 2 SOUTHERN NUCLEAR OPERATING COMPANY, INC.

DOCKET NOS. 50-321 AND 50-366 OPERATING LICENSE NOS. DPR-57 AND NPF-5 In a request for additional information dated April 26, 2007, concerning the implementation of an Alternative Source Term application; the U.S. Nuclear Regulatory Commission (NRC) staff asked whether Southern Nuclear Operating Company, Inc. (SNC) considered adding a Limiting Condition for Operation (LCO) to the Technical Specifications (TS) for the turbine building ventilation system (TBVS), including surveillance requirements (SR). SNCs reply dated February 27, 2008, stated that:

SNC intends to add the TB HVAC exhaust systems to the scope of the HNP Maintenance Rule program, in accordance with 10 CFR 50.65, and to the scope of license renewal, in accordance with 10 CFR 54.37(b). and After due consideration, SNC has concluded that the addition to HNP TS of a LCO, including surveillance requirements, to assure the lowest functional capability or performance levels, as stated in 10 CFR 50.36 titled Technical Specifications, is not warranted for the new credited function of the TB HVAC exhaust systems. Contrary to the vast majority of safety functions in the TS, the capability to perform the Alternative Source Term credited function of purging the turbine building is demonstrated continuously during Edwin I. Hatch Nuclear Plant operation.

As discussed with SNC staff on May 29, 2008, the NRC staff requests that SNC provide a detailed evaluation of whether the TBVS is equipment required for safe operation of the facility as required by 10 CFR 50.36(d)(2)(ii)( C), Criterion 3, A structure, system or component that is part of the primary success path and which functions or actuates to mitigate a design-basis accident or transient that either assumes the failure of or presents a challenge to the integrity of a fission product barrier, or 10 CFR 50.36(d)(2)(ii)(D), Criterion 4, A structure system, or component which operating experience or probabilistic risk assessment has shown to be significant to public health and safety and therefore requires a limiting condition for operation.

The NRC staff may pursue, in the future as needed, further details on the addition of the TB HVAC exhaust systems to the scope of the HNP Maintenance Rule program.

Edwin I. Hatch Nuclear Plant, Units 1 & 2 cc:

Laurence Bergen Oglethorpe Power Corporation 2100 E. Exchange Place P.O. Box 1349 Tucker, GA 30085-1349 Mr. R. D. Baker Manager - Licensing Southern Nuclear Operating Company, Inc.

P.O. Box 1295 Birmingham, AL 35201-1295 Resident Inspector Plant Hatch 11030 Hatch Parkway N.

Baxley, GA 31531 Harold Reheis, Director Department of Natural Resources 205 Butler Street, SE., Suite 1252 Atlanta, GA 30334 Steven M. Jackson Senior Engineer - Power Supply Municipal Electric Authority of Georgia 1470 Riveredge Parkway, NW Atlanta, GA 30328-4684 Mr. Reece McAlister Executive Secretary Georgia Public Service Commission 244 Washington St., SW Atlanta, GA 30334 Arthur H. Domby, Esq.

Troutman Sanders Nations Bank Plaza 600 Peachtree St, NE, Suite 5200 Atlanta, GA 30308-2216 Chairman Appling County Commissioners County Courthouse Baxley, GA 31513 Mr. Jeffrey T. Gasser Executive Vice President Southern Nuclear Operating Company, Inc.

P.O. Box 1295 Birmingham, AL 35201-1295 General Manager Edwin I. Hatch Nuclear Plant Southern Nuclear Operating Company, Inc.

U.S. Highway 1 North P.O. Box 2010 Baxley, GA 31515 Mr. K. Rosanski Resident Manager Oglethorpe Power Corporation Edwin I. Hatch Nuclear Plant P.O. Box 2010 Baxley, GA 31515