ML20216F189

Forwards Copies of Maine Yankee & Yankee Rowe Refs Listed, Supporting Industry Position That Branch Technical Position Asb 9-2 Methodology over-estimates Spent Fuel Decay Heat

ML20216F189
Person / Time
Site:	Yankee Rowe, Maine Yankee
Issue date:	08/26/1999
From:	Alexis Nelson NUCLEAR ENERGY INSTITUTE (FORMERLY NUCLEAR MGMT &
To:	Dudley R NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20216F193	List: ML20216F189 ML20216F196 ML20216F222 ML20216F234 ML20216F243
References
PROJECT-689 NUDOCS 9909210206
Download: ML20216F189 (2)

Text

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NUCLEAR ENERGY INSTITUTE l

SEN OR P OJECT MANAGER UC EARG ERATION OMSION August 26,1999 Mr. Richard Dudley U.S. Nuclear Regulatory Commission Document Control Desk Mail Stop 11 D14

> Washington, DC 20555-0001

SUBJECT:

Project No. JO689

Dear Mr. Dudley:

Enclosed please find copies of the Maine Yankee and Yankee Rowe references listed below. As discussed at the recent NRC-Public Workshop on Risk Related to Spent Fuel Pool Accidents for Decommissioning Plants, this information supports the industry position that the Branch Technical Position ASB 9-2 methodology over-estimates spent fuel decay heat. At Maine Yankee the BTP ASB 9-2 over-estimated decay heat by approximately 40% *aference 2, page id 01%). At Yankee Rowe using similar ANS methodology decay heat was over-estimated by approximately 80% (Reference 3, page 9).

Please contact me at (202) 739-8110 or by e-mail at apu@nei.org.

Sincerely, I

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.f._NLf Alan Nel on APN:tnb V.lf" h

References:

1. Duke Engineering & Services Calculation MYC-2004 Rev. O, " Spent Fuel Pool Thermal-Hydraulic Calculations," dated 12/1/97.

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I Mr. Richard Dudley

August 26,1999 Page 2

2. Duke Engineering & Services Calculation MYC-2005 Rev.0, " Spent Fuel Paol Passive Cooling," dated 12/1/97.

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3. Duke Engineering & Services Calculation YRC-991 Rev.0, Estimation of Spent Fuel Pit Heat-Up Rate Incorporating Actual Plant Data and Thermal Losses," l dated, G/3/92.

4. Duke Engineering & Services Calculation YRC-991 Rev.1, " Estimation of Spent Fuel Pit Heat Up Rate Incorporating Actual Plant Data and Thermal Losses,"

dated, 4/15/94.

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