ML15133A316

Request for Additional Information

ML15133A316
Person / Time
Site:	Hatch
Issue date:	05/18/2015
From:	Martin R Plant Licensing Branch II
To:	Pierce C Southern Nuclear Operating Co
Martin R
References
TAC MF5579, TAC MF5580
Download: ML15133A316 (3)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 May18,2015 Mr. C. R. Pierce Regulatory Affairs Director Southern Nuclear Operating Company, Inc.

P. 0. Box 1295/Bin - 038 Birmingham, AL 35201-1295

SUBJECT:

EDWIN I. HATCH NUCLEAR PLANT, UNITS 1 AND 2 - REQUEST FOR ADDITIONAL INFORMATION (TAC NOS. MF5579 AND MF5580)

Dear Mr. Pierce:

The U.S. Nuclear Regulatory Commission (NRC) staff reviewed the Southern Nuclear Operating Company, Inc. (SNC), license amendment request (LAR), dated January 13, 2015, (Agencywide Documents Access and Management System (ADAMS) Accession No. ML15014A411) to Revise Technical Specifications Regarding Generic Letter 2008-01, Managing Gas Accumulation in accordance with TSTF-523, Revision 2, for the Edwin I. Hatch Nuclear Plant, Units 1 and 2.

The NRC staff has reviewed the LAR and has determined that additional information is necessary as set forth in the Enclosure. Please provide a schedule for submittal of your response to these questions.

Sincerely,

//)fl ltJ.-17L1-:-"

f~Bob Martin, Senior Project Manager Plant Licensing Branch 11-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos.: 50-321, 50-366 cc: Distribution via Listserv

REQUEST FOR ADDITIONAL INFORMATION EDWIN I. HATCH NUCLEAR PLANT. UNITS 1 AND 2 SOUTHERN NUCLEAR OPERATING COMPANY. INC.

DOCKET NOS. 50-321AND50-366 The U.S. Nuclear Regulatory Commission (NRC) staff reviewed the Southern Nuclear Operating Company, Inc. (SNC), license amendment request (LAR), dated January 13, 2015, (Agencywide Documents Access and Management System (ADAMS) Accession No. ML15014A411) to Revise Technical Specifications Regarding Generic Letter 2008-01, Managing Gas Accumulation in accordance with TSTF-523, Revision 2, for the Edwin I. Hatch Nuclear Plant, Units 1 and 2. The NRC staff has reviewed the request and determined that additional information is necessary as noted below.

1. An acceptable surveillance must include allowance for gas accumulation until the next surveillance is scheduled. How is this requirement satisfied by the following:

a. Satisfactorily operating a system or subsystem such as a residual heat removal shutdown cooling subsystem?

b. Monitoring Reactor Core Isolation Cooling pump suction pressure?

c. Use of a procedure designed to initially ensure that piping is adequately filled and vented?

2. Please describe the monitoring of other system parameters that could identify a change that could introduce gas into piping between surveillance intervals.

3. What are representative surveillance frequencies that exist under the Surveillance Frequency Control Program that differ from the TSTF-523 example of 31 days and what is the basis for those changes?

Enclosure

May 18, 2015 Mr. C. R. Pierce Regulatory Affairs Director Southern Nuclear Operating Company, Inc.

P. 0. Box 1295/Bin - 038 Birmingham, AL 35201-1295

SUBJECT:

EDWIN I. HATCH NUCLEAR PLANT, UNITS 1 AND 2 - REQUEST FOR ADDITIONAL INFORMATION (TAC NOS. MF5579 AND MF5580)

Dear Mr. Pierce:

The U.S. Nuclear Regulatory Commission (NRC) staff reviewed the Southern Nuclear Operating Company, Inc. (SNC), license amendment request (LAR), dated January 13, 2015, (Agencywide Documents Access and Management System (ADAMS) Accession No. ML15014A411) to Revise Technical Specifications Regarding Generic Letter 2008-01, Managing Gas Accumulation in accordance with TSTF-523, Revision 2, for the Edwin I. Hatch Nuclear Plant, Units 1 and 2.

The NRC staff has reviewed the LAR and has determined that additional information is necessary as set forth in the Enclosure. Please provide a schedule for submittal of your response to these questions.

Sincerely, IRA!

Bob Martin, Senior Project Manager Plant Licensing Branch 11-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos.: 50-321, 50-366 cc: Distribution via Listserv DISTRIBUTION:

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