0CAN061302, Commitment for Implementation of Multi-Source Dose Assessment Capability

Commitment for Implementation of Multi-Source Dose Assessment Capability

ML13183A125
Person / Time
Site:	Arkansas Nuclear
Issue date:	06/27/2013
From:	Jeremy G. Browning Entergy Operations
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
0CAN061302
Download: ML13183A125 (4)

Text

Entergy Operations, Inc.

1448 S.R. 333 Russellville, AR 72802 Tel 479-858-3110 Jeremy G. Browning Vice President, Operations Arkansas Nuclear One 0CAN061302 June 27, 2013 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk 11555 Rockville Pike Rockville, MD 20852

SUBJECT:

Commitment for Implementation of Multi-Source Dose Assessment Capability Arkansas Nuclear One - Units 1 and 2 Docket Nos. 50-313 and 50-368 License Nos. DPR-51 and NPF-6

REFERENCE:

Nuclear Energy Institute (NEI) letter (J. E. Pollock) to NRC, (J. T. Wiggins), Commitment for Implementation of Multi-Unit Dose Assessment Capability, dated March 14, 2013 (ML13073A522)

Dear Sir or Madam:

This letter provides information regarding multi-source dose assessment capability for Arkansas Nuclear One (ANO) in response to the referenced communication from NEI.

The Emergency Response Organization at ANO currently uses the Unified RASCAL (Radiological Assessment System for Consequence Analysis) Interface (URI) computer program for modeling offsite dose assessments. This computer program is used to estimate the dose consequences in the emergency response sectors using input parameters (source term, meteorological conditions, etc.). In the event of a scenario with concurrent releases from more than one release point, individual isotopic group release rates can be combined into a total for each isotopic group release rate before running dose projections or dose projections can be run for each release pathway and end results combined. Instructions for performing this type of analysis are provided in the ANO dose assessment emergency response procedure.

Consistent with the referenced letter, Entergy Operations, Inc. plans to transition to URI Version 2 (URI-2), which provides for an improved capability for multi-source dose consequence analysis. This transition to URI-2 is identified as a regulatory commitment with a completion date of not later than December 31, 2014.

0CAN061302 Page 2 of 2 This letter contains a new regulatory commitment which is identified in the attachment.

Please address any comments or questions regarding this matter to Stephenie Pyle at 479.858.4704.

Sincerely, Original signed by Jeremy G. Browning JGB/nbm

Attachment:

List of Regulatory Commitments cc: Mr. Arthur T. Howell Regional Administrator U. S. Nuclear Regulatory Commission, Region IV 1600 East Lamar Boulevard Arlington, TX 76011-4511 U. S. Nuclear Regulatory Commission Attn: Director, Office of Nuclear Reactor Regulation One White Flint North 11555 Rockville Pike Rockville, MD 20852 NRC Senior Resident Inspector Arkansas Nuclear One P.O. Box 310 London, AR 72847 U. S. Nuclear Regulatory Commission Attn: Mr. Kaly Kalyanam One White Flint North - Mailstop O-8 B1 11555 Rockville Pike Rockville, MD 20852-2378 U. S. Nuclear Regulatory Commission ATTN: J. T. Wiggins Director Nuclear Security and Incident Response Two White Flint North - Mailstop 4D22A 11555 Rockville Pike Rockville, MD 20852-2378

Attachment to 0CAN061302 List of Regulatory Commitments

Attachment to 0CAN061302 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 SCHEDULED (Check One) COMPLETION COMMITMENT DATE ONE-TIME CONTINUING (If Required)

ACTION COMPLIANCE Consistent with the referenced letter, X December 31, 2014 Entergy Operations, Inc. plans to transition to the Unified Radiological Assessment System for Consequence Analysis Interface Version 2 computer program, which provides for an improved capability for multi-source dose consequence analysis.