ML093561378

Electronic Transmission, Draft Request for Additional Information Regarding Response to Generic Letter 2008-01

ML093561378
Person / Time
Site:	Limerick
Issue date:	12/23/2009
From:	Peter Bamford Plant Licensing Branch 1
To:	Chernoff H Plant Licensing Branch 1
Bamford, Peter J., NRR/DORL 415-2833
References
GL-08-001, TAC MD7841, TAC MD7842
Download: ML093561378 (4)

Text

December 23, 2009 MEMORANDUM TO: Harold K. Chernoff, Chief Plant Licensing Branch I-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation FROM: Peter Bamford, Project Manager /ra/

Plant Licensing Branch I-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation

SUBJECT:

LIMERICK GENERATING STATION, UNIT NOS. 1 AND 2 -

ELECTRONIC TRANSMISSION, DRAFT REQUEST FOR ADDITIONAL INFORMATION REGARDING RESPONSE TO GENERIC LETTER 2008-01 (TAC NOS. MD7841 and MD7842)

The attached draft request for additional information (RAI) was transmitted by electronic transmission on December 22, 2009, to Mr. Ken Nicely, at Exelon Generation Company, LLC (Exelon, the licensee). This draft RAI was transmitted to facilitate the technical review being conducted by the Nuclear Regulatory Commission (NRC) staff and to support a conference call (if needed) with Exelon in order to clarify the licensees response to Generic Letter 2008-01, Managing Gas Accumulation in Emergency Core Cooling, Decay Heat Removal and Containment Spray Systems. The draft RAI is related to the licensees submittals dated April 11, 2008, and October 14, 2008. The draft questions were sent to ensure that they were understandable, the regulatory basis was clear, and to determine if the information was previously docketed. Additionally, review of the draft RAI would allow Exelon to evaluate and agree upon a schedule to respond to the RAI. This memorandum and the attachment do not represent an NRC staff position.

Docket Nos. 50-352 and 50-353

Enclosure:

As stated

December 23, 2009 MEMORANDUM TO: Harold K. Chernoff, Chief Plant Licensing Branch I-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation FROM: Peter Bamford, Project Manager /ra/

Plant Licensing Branch I-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation

SUBJECT:

LIMERICK GENERATING STATION, UNIT NOS. 1 AND 2 -

ELECTRONIC TRANSMISSION, DRAFT REQUEST FOR ADDITIONAL INFORMATION REGARDING RESPONSE TO GENERIC LETTER 2008-01 (TAC NOS. MD7841 and MD7842)

The attached draft request for additional information (RAI) was transmitted by electronic transmission on December 22, 2009, to Mr. Ken Nicely, at Exelon Generation Company, LLC (Exelon, the licensee). This draft RAI was transmitted to facilitate the technical review being conducted by the Nuclear Regulatory Commission (NRC) staff and to support a conference call (if needed) with Exelon in order to clarify the licensees response to Generic Letter 2008-01, Managing Gas Accumulation in Emergency Core Cooling, Decay Heat Removal and Containment Spray Systems. The draft RAI is related to the licensees submittals dated April 11, 2008, and October 14, 2008. The draft questions were sent to ensure that they were understandable, the regulatory basis was clear, and to determine if the information was previously docketed. Additionally, review of the draft RAI would allow Exelon to evaluate and agree upon a schedule to respond to the RAI. This memorandum and the attachment do not represent an NRC staff position.

Docket Nos. 50-352 and 50-353

Enclosure:

As stated DISTRIBUTION:

Public RidsNrrPMLimerick Resource LPL1-2 R/F Accession No.: ML093561378 *via correspondence OFFICE LPL1-2/PM SRXB/BC NAME PBamford GCranston*

DATE 12/23/09 12/15/2009 OFFICIAL RECORD COPY

REQUEST FOR ADDITIONAL INFORMATION LIMERICK GENERATING STATION, UNIT NOS. 1 AND 2 GENERIC LETTER 2008-01, MANAGING GAS ACCUMULATION IN EMERGENCY CORE COOLING, DECAY HEAT REMOVAL AND CONTAINMENT SPRAY SYSTEMS DOCKET NOS. 50-352 AND 50-353 By letters dated April 11, 2008 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML081020758), and October 14, 2008 (ADAMS Accession No. ML082880706), Exelon Generation Company, LLC provided a response to Generic Letter (GL) 2008-01, Managing Gas Accumulation in Emergency Core Cooling, Decay Heat Removal, and Containment Spray Systems (ADAMS Accession No. ML072910759) for Limerick Generating Station (LGS), Units 1 and 2. Additional information is required for the U.S. Nuclear Regulatory Commission (NRC) staff to determine that the licensee has acceptably demonstrated that the subject systems are in compliance with the current licensing and design bases and applicable regulatory requirements, and that suitable design, operational, and testing control measures are in place for maintaining this compliance as stated in GL 2008-01.

Background:

Guidance on NRC staff expectations is provided by NRC letter dated May 28, 2009, (ADAMS Accession No. ML091390637). These expectations are generally consistent with Nuclear Energy Institute (NEI) guidance provided to the nuclear industry.1 The NRC staff recommends that the licensee consult NRC letter, dated May 28, 2009, when responding to the following request for additional information:

1. The staff requests the following additional information regarding your surveillance procedure:

a) Summarize the surveillance locations along with the associated surveillance methods; b) Discuss the surveillance intervals for the monitored locations, including justifications for surveillance intervals greater than a month; 1

See Riley, James H., Generic Letter (GL) 2008-01, Managing Gas Accumulation in Emergency Core Cooling, Decay Heat Removal, and Contain Spray Systems Evaluation and 3 Month Response Template, Letter to Administrative Points of Contact from Director, Engineering, Nuclear Generation Division, Nuclear Energy Institute, Enclosure 2, Generic Letter 2008-01 Response Guidance, ML093070557, March 20, 2008.

Enclosure

c) Provide the surveillance criteria; d) Discuss actions to be taken if surveillance criteria are not met; e) State whether all voids identified will be quantified, recorded, and entered into the Corrective Action Program.

2. Training was not identified in the GL but is considered by the NRC to be a necessary part of applying procedures and other activities when addressing the issues identified in the GL. Briefly discuss the training aspects of the issues described by this GL at LGS.