ML070920336

Request for Relief to Utilize Code Case N-659, Use of Ultrasonic Examination in Lieu of Radiography for Weld Examination Section III, Division 1.

ML070920336
Person / Time
Site:	Three Mile Island
Issue date:	03/30/2007
From:	Cowan P AmerGen Energy Co, Exelon Corp
To:	Document Control Desk, NRC/NRR/ADRO
References
5928-07-20623
Download: ML070920336 (2)

Text

An Exebn Csmpariy 10 CFR 50.55a 5928-07-20623 March 30, 2007 U S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555 Three Mile Island, Unit 1 Facility Operating License No. DPR-50 NRC Docket No. 50-289

Subject:

Request for Relief to utilize Code Case N-659, Use of Ultrasonic Examination in Lieu of Radiography for Weld Examination Section Ill, Division 1

Reference:

1) Letter from P. B. Cowan (AmerGen Energy Company, LLC) to U. S. Nuclear Regulatory Commission, dated September 28,2006

2) Letter from F. E. Saba (U. S. Nuclear Regulatory Commission) to C. M. Crane (AmerGen Energy Company, LLC), dated January 22,2007

3) Letter from P. B. Cowan (AmerGen Energy Company, LLC) to U. S. Nuclear Regulatory Commission, February 20, 2007 In the Reference 1 letter, pursuant to 10 CFR 50.55a(a)(3)(ii), AmerGen Energy Company, LLC (AmerGen) proposed an alternative to the requirements of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code, Section Ill, Rules for Construction of Nuclear Power Plant Components, on the basis that compliance with the specified requirements of this code results in hardship or unusual difficulty without a compensating increase in the level of quality and safety. Specifically, AmerGen proposed an alternate nondestructive examination method based on Code Case N-659 (Use of Ultrasonic Examination in Lieu of Radiography for Weld Examination Section Ill, Division 1,I September 17, 2002) for the replacement of seven (7) Alloy 82/182 welds and associated Alloy 600 safe ends on the Three Mile Island, Unit 1 pressurizer.

Upon further review, AmerGen no longer requires this relief and is withdrawing this request.

If you have any questions, please contact Mr. Thomas R. Loomis (610-765-5510).

Respectfully, Director - Licensing & Regulatory Affairs AmerGen Energy Company, LLC

US. Nuclear Regulatory Commission March 30,2007 Page 3 cc: S. J. Collins, Regional Administrator, Region I, USNRC D. M. Kern, USNRC Senior Resident Inspector, TMI V. Nerses, Senior Project Manager, USNRC G. E. Miller, Project Manager, USNRC File No. 05056