ML113120088

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Clarifications to Thermal Files to Support North Anna and Surry Exemption Requests
ML113120088
Person / Time
Site: Surry, North Anna, 07201030
Issue date: 11/07/2011
From: Tavassoli K
Transnuclear
To: Jennivine Rankin
NRC/NMSS/SFST
References
Download: ML113120088 (2)


Text

From:

TAVASSOLI Kamran (AREVA) [kamran.tavassoli@areva.com]

Sent:

Monday, November 07, 2011 3:26 PM To:

Rankin, Jennivine Cc:

Tom Szymanski

Subject:

RE: Clarifications to the thermal files to support North Anna and Surry exemption requests Attachments:

ANSYS Macro Explanation - NRC.DOC Hi Jennie, Please see the clarifications provided in the attached file for the macro HEAT_RECONG.mac. The clarifications refer to the relevant SAR sections in providing the explanations to assist in recognizing the parameters.

The differences between this macro and the original macro are also included in the clarifications.

Please do not hesitate to call me if you have any questions or more clarifications are required.

Thank you, Kamran Tavassoli Licensing Manager (Transportation)

Transnuclear, Inc. (An AREVA Company) 7135 Minstrel Way - Suite 300 Columbia, MD 21045 Phone: 410-910-6944 Fax: 410-910-6902 kamran.tavassoli@areva.com From: Rankin, Jennivine [1]

Sent: Friday, November 04, 2011 8:32 AM To: TAVASSOLI Kamran (TRANSNUCLEAR INC)

Cc: Tom Szymanski

Subject:

Clarifications to the thermal files to support North Anna and Surry exemption requests Hi Kamran, It was nice to see you yesterday. As I mentioned to you, the thermal reviewer would like some clarification on the HEATGEN_RECONF.MAC file to aid in his review for the North Anna and Surry exemptions.

He is looking for the meanings and units for the following variables and values listed in the HEATGEN_RECONF.MAC file. For example, he would like to know what level meansis it a distance, etc?

level(1 through 15) pfact(1 through 14) zone(1 through 5) cmname(1 through 14)

decayh dunit (briefly describe the algorithm)

Within the dunit equation:

a_fuel 0.8, 1.1, 1.2, 0.86 value 3412.3 value 0.984 value 144 value The reviewer would also like to see the difference in values between the above file (the model with the reversed loaded heat loads) and the original model. Is it possible to identify any differences in values, if there is any?

Please let me know if you have any questions or if it is easier for you to have a phone call, and I can always set up a teleconference with the reviewer.

Thank you!

Jennie Rankin Project Manager U.S. Nuclear Regulatory Commission Mailstop EBB 3D-02M Washington, DC 20555 301-492-3268 Jennivine.Rankin@nrc.gov