ML15051A032

Pilgrim Nuclear Power Plant - Request for Additional Information Regarding the Safety Limit Minimum Critical Power Ratio License Amendment Request (TAC No. MF5431)

ML15051A032
Person / Time
Site:	Pilgrim
Issue date:	02/25/2015
From:	Morgan N S Plant Licensing Branch 1
To:	Dent J A Entergy Nuclear Operations
Morgan N S
References
TAC MF5431
Download: ML15051A032 (3)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 Mr. John Dent, Jr. Site Vice President Entergy Nuclear Operations, Inc. Pilgrim Nuclear Power Station 600 Rocky Hill Road Plymouth, MA 02360-5508 February 25, 2015

SUBJECT:

PILGRIM NUCLEAR POWER PLANT -REQUEST FOR ADDITIONAL INFORMATION REGARDING THE SAFETY LIMIT MINIMUM CRITICAL POWER RATIO LICENSE AMENDMENT REQUEST (TAC NO. MF5431)

Dear Mr. Dent:

By letter dated December 10, 2014, as supplemented by letter dated February 13, 2015, Entergy Nuclear Operations, Inc. submitted a license amendment request that would revise the Safety Limit Minimum Critical Power Ratio 1.08 1.10 for two recirculation loop operation and from 1.11 1.12 for single loop operation for Pilgrim Nuclear Power Station. The Nuclear Regulatory Commission (NRC) staff is reviewing the application and has determined that additional information is needed to complete its review. The specific questions are found in the enclosed request for additional information (RAI). The NRC staff is requesting a response to the RAI within 14 days of February 23, 2015 in an effort to expedite the review. If you have any questions regarding this matter, please contact me at (301) 415-1016.

Docket No. 50-293

Enclosure:

RAI cc w/encl: Distribution via Listserv Sincerely, adiyah S. Morgan, Project Manager Plant Licensing Branch 1-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation REQUEST FOR ADDITIONAL INFORMATION REGARDING THE SAFETY LIMIT MINIMUM CRITICAL POWER RATIO LICENSE AMENDMENT REQUEST ENTERGY NUCLEAR GENERATION COMPANY ENTERGY NUCLEAR OPERATIONS, INC. PILGRIM NUCLEAR POWER STATION DOCKET NO. 50-293 By letter dated December 10, 2014 (Agencywide Document Access and Management System (ADAMS) Accession No. ML 14349A495), as supplemented by letter dated February 13, 2015 (ADAMS Accession No. ML 15050A245), Entergy Nuclear Operations, Inc. submitted a license amendment request that would revise the Safety Limit Minimum Critical Power Ratio from .:::_ 1. 08 to .:::_ 1.10 for two recirculation loop operation and from .:::_ 1.11 to .:::_ 1.12 for single loop operation for Pilgrim Nuclear Power Station (Pilgrim).

In order to complete its review, the Nuclear Regulatory Commission staff requests further information on the following items: 1. Provide the differences in design and geometrical considerations between Global Nuclear Fuel -2 and General Electric -14. 2. a. Discuss the methodology and the scheme used during Pilgrim Cycles 20 and 21 for core reloads. Is there a noticeable change in the core radial and axial power shapes between cycles 20 and 21 reloads? b. For the initial core loadings of the Pilgrim Cycles 20 and 21 specify the fuel type, number of fresh, once-burned, twice-, and thrice-burned fuel. Enclosure February 25, 2015 Mr. John Dent, Jr. Site Vice President Entergy Nuclear Operations, Inc. Pilgrim Nuclear Power Station 600 Rocky Hill Road Plymouth, MA 02360-5508

SUBJECT:

PILGRIM NUCLEAR POWER PLANT -REQUEST FOR ADDITIONAL INFORMATION REGARDING THE SAFETY LIMIT MINIMUM CRITICAL POWER RATIO LICENSE AMENDMENT REQUEST (TAC NO. MF5431)

Dear Mr. Dent:

By letter dated December 10, 2014, as supplemented by letter dated February 13, 2015, Entergy Nuclear Operations, Inc. submitted a license amendment request that would revise the Safety Limit Minimum Critical Power Ratio from > 1.08 to > 1.10 for two recirculation loop operation and from > 1.11 to > 1.12 for single loop operation for Pilgrim Nuclear Power Station. The Nuclear Regulatory Commission (NRC) staff is reviewing the application and has determined that additional information is needed to complete its review. The specific questions are found in the enclosed request for additional information (RAI). The NRC staff is requesting a response to the RAI within 14 days of February 23, 2015 in an effort to expedite the review. If you have any questions regarding this matter, please contact me at (301) 415-1016.

Docket No. 50-293

Enclosure:

RAI cc w/encl: Distribution via Listserv DISTRIBUTION:

PUBLIC LPLl-1 R/F RidsNrrDorlDpr M. Chernoff RidsNrrDorlLpl 1-1 RidsNrrLAKGoldstein

RidsRgn1 MailCenter RidsNrrDssSrxb ADAMS Accession No.: ML 15051A032 Sincerely, IRA/ Nadiyah S. Morgan, Project Manager Plant Licensing Branch 1-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation RidsNrrPMPilgrim RidsAcrsAcnw

_MailCTR S. Krepel F. Forsaty OFFICE LPLl-1/PM LPLl-1/LA SRXB/BC LPLl-1/BC NAME NMorgan KGoldstein CJackson BBeaslev DATE 2/24/2015 02/24/2015 2/24/2015 2/25/2015 OFFICIAL RECORDS COPY