ML14111A093

Request for Additional Information - License Amendment Request to Adopt TSTF-493-A, Revision 4, Clarify Application of Setpoint Methodology for LSSS Functions, Option a

ML14111A093
Person / Time
Site:	Columbia
Issue date:	04/30/2014
From:	Lyon C Plant Licensing Branch IV
To:	Reddemann M Energy Northwest
Lyon C
References
TAC MF2863
Download: ML14111A093 (3)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 April 30, 2014 Mr. Mark E. Reddemann Chief Executive Officer Energy Northwest P.O. Box 968 (Mail Drop 1023)

Richland, WA 99352-0968

SUBJECT:

COLUMBIA GENERATING STATION- REQUEST FOR ADDITIONAL INFORMATION RELATED TO LICENSE AMENDMENT REQUEST TO ADOPT TSTF-493, REVISION 4, OPTION A (TAC NO. MF2863)

Dear Mr. Reddemann:

By application dated October 2, 2013, to the U.S. Nuclear Regulatory Commission (NRC)

(Agencywide Documents Access and Management System (ADAMS) Accession No. ML13284A063), Energy Northwest, the licensee, submitted a license amendment request for Columbia Generating Station to revise the Technical Specifications to incorporate Technical Specification Task Force (TSTF) Traveler TSTF-493-A, Revision 4, "Clarify Application of Setpoint Methodology for LSSS [Limiting Safety System Setting] Functions," Option A.

The NRC staff has reviewed the information provided in your application and determined that additional information is required in order to complete its review. The enclosed questions were provided to L. Williams of your staff on April18, 2014. Please provide a response to the questions within 30 days of the date of this letter.

If circumstances result in the need to revise the requested response date, please contact me at (301) 415-2296 or by e-mail at fred.lyon@nrc.gov.

Sincerely, Carl F. Lyon, Project Manager Plant Licensing Branch IV-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-397

Enclosure:

Request for Additional Information cc w/encl: Distribution via Listserv

REQUEST FOR ADDITIONAL INFORMATION ADOPT TSTF-493. REVISION 4, OPTION A ENERGY NORTHWEST COLUMBIA GENERATING STATION DOCKET NO. 50-397 By application dated October 2, 2013, to the U.S. Nuclear Regulatory Commission (NRC)

(Agencywide Documents Access and Management System (ADAMS) Accession No. ML13284A063), Energy Northwest, the licensee, submitted a license amendment request for Columbia Generating Station to revise the Technical Specifications to incorporate Technical Specification Task Force (TSTF) Traveler TSTF-493-A, Revision 4, "Clarify Application of Setpoint Methodology for LSSS [Limiting Safety System Setting] Functions," Option A.

Based on its review, the NRC staff requests the following additional information to complete its safety evaluation of the application.

EICB-RAI-1 Please provide the Nominal Trip Setpoint and Limiting Trip Setpoint (LTSP) for the functions that will include TSTF-493, Revision 4, Surveillance Notes 1 and 2. Also, please provide a description of the methodology for calculating the LTSPs, As-Left Tolerance, and As-Found Tolerance based on the analytical limits, where applicable.

Enclosure

• .. ML14111A093 *memo OFFICE NRRIDORULPL4-1/PM NRR/DORULPL4-1 /LA NRR/DE/EICB/BC* NRRIDORULPL4-1/BC NRR/DORULPL4-1/PM NAME FLyon JBurkhardt JThorp MMarkley Flyon DATE 4/29/14 4/29/14 4/10/14 4/30/14 4/30/14