ML110120052

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Transmittal of US-APWR DCD Chapter 15.6.5 SBLOCA Markups
ML110120052
Person / Time
Site: 05200021
Issue date: 12/28/2010
From: Ogata Y
Mitsubishi Heavy Industries, Ltd
To: Ciocco J
Document Control Desk, Office of New Reactors
References
UAP-HF-10349
Download: ML110120052 (3)


Text

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MITSUBISHI HEAVY INDUSTRIES, LTD.

16-5, KONAN 2-CHOME, MINATO-KU TOKYO, JAPAN December 28, 2010 Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001 Attention: Mr. Jeffrey A. Ciocco Docket No.52-021 MHI Ref: UAP-HF-10349

Subject:

Transmittal of US-APWR DCD Chapter 15.6.5 SBLOCA Markups

References:

1) Mitsubishi Heavy Industries, Ltd., 'MHI's Response to the NRC's Request for Additional Information on Topical Report MUAP-07013-P (R1) "Small Break LOCA Methodology for US-APWR" on 09/28/2010',

UAP-HF-1 0266, September 30, 2010.

2) Mitsubishi Heavy Industries, Ltd., 'Transmittal of US-APWR DCD Chapter 15.6.5 SBLOCA Markups', UAP-HF-10290, November 1, 2010.

With this letter, Mitsubishi Heavy Industries, Ltd. ("MHI") transmits to the U.S. Nuclear Regulatory Commission ("NRC") an official document entitled 'US-APWR DCD Chapter 15.6.5 SBLOCA Markups'. MHI provides this document in relation to the M-RELAP5 code modification described in Reference 1, as agreed between the NRC and MHI. It is noted that the draft markups related to this code modification were previously submitted to the NRC in Reference 2. The markups enclosed with this letter are to be involved in the next official revision of the US-APWR Design Control Document (DCD).

Please contact Dr. C. Keith Paulson, Senior Technical Manager, Mitsubishi Nuclear Energy Systemsi Inc. if the NRC has questions concerning any aspect of this submittal. His contact information is provided below.

Sincerely, Yoshiki Ogata General Manager - APWR Promoting Department Mitsubishi Heavy Industries, LTD.

8Z1

Enclosures:

1. US-APWR DCD Chapter 15.6.5 SBLOCA Markups (OSM, non-proprietary)

CC: J.A. Ciocco C. K. Paulson Contact Information C. Keith Paulson, Senior Technical Manager Mitsubishi Nuclear Energy Systems, Inc.

300 Oxford Drive, Suite 301 Monroeville, PA 15146 E-mail: ck-paulson@mnes-us.com Telephone: (412) 373 - 6466

ATTACHMENT 1 FILES Contained in OSM UAP-HF-10349 OSM: "US-APWR DCD Chapter 15.6.5 SBLOCA Markups" Contents of OSM (Optical Storage Medium)

File Name Size Sensitivity Level

- US-APWR DCD Chapter 15.6.5 SBLOCA Markups

- $15_6_5_R2_Markup.pdf 816KB Non-Proprietary