ML12068A294

Request for Additional Information Regarding Reactor Systems Mur Review (TACs ME6587, ME6588, ME6589, and ME6590)

ML12068A294
Person / Time
Site:	Byron, Braidwood
Issue date:	03/08/2012
From:	Mozafari B Plant Licensing Branch III
To:	Byam T, Gullott D, Holden L Exelon Corp
Mozafari B
References
TAC ME6587, TAC ME6588, TAC ME6589, TAC ME6590
Download: ML12068A294 (1)

Text

From: Mozafari, Brenda Sent: Thursday, March 08, 2012 10:42 AM To: 'timothy.byam@exeloncorp.com'; 'Leslie.Holden@exeloncorp.com'; 'David.Gullott@exeloncorp.com' Cc: Mahoney, Michael

Subject:

RAI regarding Reactor Systems MUR review (TAC NOS. ME6587, ME6588, ME6589, ME6590)

By letter to the U.S. Nuclear Regulatory Commission (NRC) dated June 23, 2011 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML111790030), as supplemented by letter dated August 25, 2011 (ADAMS Accession No. ML11255A332), Exelon Generation Company (the licensee) requested an amendment associated with a measurement uncertainty recapture power uprate, for the Braidwood Station, Units 1 and 2, and Byron Station, Unit Nos. 1 and 2.

The NRC staff is reviewing your submittal and has determined that additional information is required to complete the review. The specific information requested is addressed in the enclosure to this letter. During a discussion with your staff on March 5, 2012, it was agreed that you would provide a response by March 30, 2012.

In reviewing the Exelon Generation Company=s (Exelon=s) submittal dated June 23, 2011, related to measurement uncertainty recapture, for the Braidwood Station (Braidwood), Units 1 and 2 and Byron Station (Byron), Unit Nos. 1 and 2, the NRC staff has determined that the following information is needed in order to complete its review:

1. Provide downstream distances from the ultrasonic flow meter (UFM) to the next non-straight pipe component at the Alden labs test setup.

2. Provide a summary of the data comparing the LEFM Checkplus operating data to Venture data for the past six months.

For Byron: Provide a summary explanation and projected solution to the UFM drift issue.

The NRC staff is reviewing your submittal and has determined that additional information is required to complete the review. The specific information requested is addressed in the enclosure to this letter. During a discussion with your staff on March 5, 2012, it was agreed that you would provide a response by March 30, 2012.

This email will be put in ADAMS to expedite your response. You may reference this RAI in your response.

Brenda L. Mozafari Senior Project Manager, NRR/DORL U.S. Nuclear Regulatory Commission 301-415-2020 email: brenda.mozafari@nrc.gov