ML15244B038

Closure of Investigation (OI 4-2014-033)

ML15244B038
Person / Time
Site:	Comanche Peak
Issue date:	08/31/2015
From:	Hay M NRC Region 4
To:	Flores R Luminant Generation Co
References
4-2014-033
Download: ML15244B038 (1)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION REGION IV 1600 E. LAMAR BL VD ARLINGTON, TX 76011-4511 August 31, 2015 Rafael Flores, Senior Vice President and Chief Nuclear Officer Attention : Regulatory Affairs Luminant Generation Company LLC Comanche Peak Nuclear Power Plant P.O. Box 1002 Glen Rose, TX 76043

SUBJECT:

CLOSURE OF INVESTIGATION (01 4-2014-033)

Dear Mr. Flores:

This refers to an investigation conducted by the NRC's Office of Investigations regarding activities at Comanche Peak Nuclear Power Plant. The Office of Investigations initiated the investigation to determine whether personnel at Luminant Generation Company LLC's Comanche Peak Nuclear Power Plant, Glen Rose, Texas, willfully tampered with the Halon fire protection system and the electrical room sprinkler system.

Based on the evidence developed during the investigation, the allegation that Luminant Generation Company LLC personnel assigned to the Comanche Peak Nuclear Power Plant willfully tampered with the Halon fire protection system and the electrical room sprinkler system was not substantiated. The NRC plans no further action related to the willful aspect of this allegation and considers this investigation closed.

You should note that final NRC documents may be made available to the public under the Freedom of Information Act subject to redaction of information pursuant to the Freedom of Information Act. Requests under the Freedom of Information Act should be made in accordance with 10 CFR 9.23, Requests for Records . Information is accessible from the NRC's website at http://www.nrc.gov/reading-rm/foia/foia-reguest.html#how.

In accordance with 10 CFR 2.390 of the NRC's "Rules of Practice, a copy of this letter will be made available electronically for public inspection in the NRC Public Document Room or from the NRC's Agencywide Documents Access and Management System (ADAMS), accessible from the NRC website at http://www.nrc.gov/reading-rm/adams.html.

Sincerely,

• 7/t~ ( ,. /ik, /

Michael C. Hay, Te:m..., Ller Allegations Coordination and Enforcement Staff Dockets: 50-445; 50-446 Licenses: NPF-87; NPF-89