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MONTHYEARML0722002582007-07-31031 July 2007 License Amendment Request to Revise Technical Specification 6.6.5, Core Operating Limits Report Project stage: Other 2CAN070701, Emergency Core Cooling System Performance Analysis.2007-07-31031 July 2007 Emergency Core Cooling System Performance Analysis. Project stage: Request 2CAN030801, Response to Request for Additional Information, License Amendment Request to Revise Technical Specification 6.6.5, Core Operating Limits Report2008-03-11011 March 2008 Response to Request for Additional Information, License Amendment Request to Revise Technical Specification 6.6.5, Core Operating Limits Report Project stage: Response to RAI ML0808400152008-03-26026 March 2008 Issuance of Amendment No. 276, Revise Technical Specification 6.6.5, Core Operating Limits Report, to Add Analytical Methods to Support Implementation of Next Generation Fuel Project stage: Approval ML0808400232008-03-26026 March 2008 Tech Spec Pages for Amendment No. 276, Revise Technical Specification 6.6.5, Core Operating Limits Report, to Add Analytical Methods to Support Implementation of Next Generation Fuel Project stage: Other 2008-03-11
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Text
2CAN030801
March 11, 2008
U. S. Nuclear Regulatory Commission Attn.: Document Control Desk Washington, DC 20555-0001
SUBJECT:
Response to Request for Additional Information License Amendment Request to Revise Technical Specification 6.6.5, Core Operating Limits Report
Arkansas Nuclear One, Unit 2
Docket No. 50-368 License No. NPF-6
REFERENCE:
- 1. Entergy Letter to NRC dated July 31, 2007 License Amendment Request to Revise Technical Specification 6.6.5, Core Operating
Limits Report
Dear Sir or Madam:
By letter dated July 31, 2007 (Reference 1), Entergy Operations, Inc. (Entergy) proposed to revise the Arkansas Nuclear One, Unit 2 (ANO-2) Technical Specification 6.6.5 to add new analytical methods to support the implementation of Next Generation Fuel (NGF).
During the review of the Reference 1 submittal, a question was raised from the Reactor Systems Branch. This question (Request for Additional Information (RAI)) was informally transmitted to Entergy on February 7, 2008. Several discussions with the NRC have taken place since transmittal of the RAI. The RAI and Entergy's response to the RAI is included in Enclosure 1.
There are no technical changes proposed. The conclusions of the original no significant hazards consideration included in Reference 1 are not affected by any information contained
in this supplemental letter.
This letter contains one new commitment. This commitment is identified in Attachment 2. Entergy Operations, Inc. 1448 S.R. 333 Russellville, AR 72802 Tel 479-858-4619 Dale E. James Manager, Licensing Arkansas Nuclear One
2CAN030801 Page 2 of 2
If you have any questions or require additional information, please contact Bob Clark at (479) 858 4663.
Sincerely, DEJ/rwc
Attachments: 1. Response to Request for Additional Information Related to the COLR Listing of Methodologies
- 2. List of Regulatory Commitments
cc: Mr. Elmo E. Collins Regional Administrator U. S. Nuclear Regulatory Commission
Region IV 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011-8064
NRC Senior Resident Inspector
Arkansas Nuclear One P.O. Box 310
London, AR 72847 U.S. Nuclear Regulatory Commission Attn: Mr. Alan B. Wang MS O-7 D1 Washington, DC 20555-0001 Mr. Bernard R. Bevill
Director Division of Radiation Control and Emergency Management Arkansas Department of Health & Human Services P.O. Box 1437 Slot H-30 Little Rock, AR 72203-1437
ATTACHMENT 1 2CAN030801 RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION RELATED TO THE COLR LISTING OF METHODOLOGIES to 2CAN030801
Page 1 of 1 RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION RELATED TO THE COLR LISTING OF METHODOLOGIES NRC Question:
Under TAC MD6220, the proposed TS 6.6.5 COLR, addition of new methods to COLR, in the July 31, 2007 submittal, there are five new methodologies to be added to the COLR TS to support the coming cycle-specific operating parameters. However, many methods are proposed to support the same parameter. We would like the licensee to clarify that: (1) the proposed changes are applicable to the coming cycle; and (2) how to apply the methods proposed to support same parameter such as 3 methods for MTC, 3 methods for Azimuthal Power Tilt, 4 methods for ASI, 3 methods for Linear Heat Rate, and 3 methods for DNBR.
Response:
In the upcoming Cycle 20, Entergy intends to implement the Next Generation Fuel (NGF) design. The proposed changes to TS 6.6.5 are needed to support the implementation of NGF.
In response to a portion of the RAI regarding an explanation of the connection or relationship between the referenced approved methodologies, the relationship was addressed
satisfactorily during conference calls between the NRC staff reviewer, ANO-2 Project Manager (PM), Westinghouse and Entergy personnel.
Based upon the understanding of the relationship between the large number (10) of core operating limit report (COLR) references that presently exist in TS 6.6.5 and the additional
five (5) references being proposed, the NRC Staff requested Entergy to commit to evaluate the COLR references and propose a TS change within the next 12 months to minimize the number of references. As an example, there are four COLR references that have a relationship with the COLR parameter limit of Shutdown Margin (TS 3.1.1.1.and 3.1.1.2), in that, three of the references describe current methodology being used. However, the other reference associated with Shutdown Margin has been superseded by more recently implemented methodology and thus, can be evaluated for deletion.
Therefore, to satisfy this condition, Enterg y commits to evaluate other similar plant's Technical Specification (TS) methodology references that reflect NRC approved methods used in establishing the COLR parameter limits. Based on that evaluation, Entergy will propose a change to TS 6.6.5, to minimize the number of references consistent with the guidance provided in Generic Letter 88-16, "Removal of Cycle-Specific Parameter Limits from Technical Specifications." This proposed TS change will be submitted within 12 months following NRC issuance of the approved amendm ent for the current requested change to TS 6.6.5. This regulatory commitment is contained in Attachment 2.
ATTACHMENT 2 2CAN030801 LIST OF REGULATORY COMMITMENTS to 2CAN030801
Page 1 of 1 LIST OF REGULATORY COMMITMENTS The following table identifies those actions committed to by Entergy in this document.
Any other statements in this submittal are provided for information purposes and are not considered to be regulatory commitments.
TYPE (Check one) COMMITMENT ONE-TIME ACTION CONTINUING COMPLIANCE SCHEDULED COMPLETION DATE Entergy commits to evaluate other similar plant's Technical Specification (TS) methodology references that reflect NRC approved methods used in establishing the COLR parameter limits. Based on that evaluation, Entergy will propose a change to
TS 6.6.5, to minimize the number of references consistent with the guidance
provided in Generic Letter 88-16, "Removal of
Cycle-Specific Parameter Limits from Technical Specifications." This proposed TS change will be submitted within 12 months
following NRC issuance of the approved amendment for the current requested change
to TS 6.6.5.
X Within 12 months following NRC issuance of the approved amendment for
the current
requested change to TS 6.6.5.