ML062290241

Revision to the Duration of Relief Request ISI-3-22 Third 10-Year Inspection Interval, San Onofre Unit 3

ML062290241
Person / Time
Site:	San Onofre
Issue date:	08/15/2006
From:	Scherer A Southern California Edison Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
ISI-3-22
Download: ML062290241 (2)

Text

A. Edward Scherer P;IE DISON' SOUITERN CALIFORNIA Manager of Nuclear Regulatory Affairs An FDISON INTERNATIONALO Company August 15, 2006 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C. 20555-0001

Subject:

Docket No. 50-362 Revision to the Duration of Relief Request ISI-3-22 Third 10-Year Inspection Interval San Onofre Nuclear Generating Station Unit 3

Reference:

Letter from A. E. Scherer (SCE) to the U. S. Nuclear Regulatory Commission (NRC) Document Control Desk dated May 11, 2006;

Subject:

Docket No. 50-362, Third Ten-Year Inservice Inspection (ISI) Interval Relief Request ISI-3-22 Request for Alternative to ASME Code Rules for the Inside Diameter Structural Weld Overlay Repair Process for Control Element Drive Mechanism (CEDM) # 56, San Onofre Nuclear Generating Station Unit 3

Dear Sir or Madam:

This letter revises the duration of Southern California Edison (SCE) relief request ISI 22, submitted to the NRC by the referenced letter.

ISI-3-22 requested approval of an alternative repair method with the intent that the repair would be good for the life of the plant. SCE submitted ISI-3-22 as a contingency to use in either the Cycle 14 or the Cycle 15 refueling outage as needed based on inspection results of CEDM # 56.

Inspection results that trigger a repair of CEDM # 56 in accordance with ISI-3-22 are not expected and will be evaluated under SCE's corrective action program. SCE believes it is reasonable to restrict approval of the post repair operating period to one cycle at this time. As a result, SCE is revising the Duration of Proposed Alternative for ISI-3-22 to be:

Relief is requested to perform the repair, if needed, during the Cycle 14 refueling outage, and to operate for one cycle, which will end with the Cycle 15 refueling outage.

P.O. Box 128 San Clemente, CA 92672 949-368-7501 Fax 949-368-7575 AOQ7

Document Control Desk August 15, 2006 Should you have any questions, please contact Mr. Jack Rainsberry, Manager, Plant Licensing at (949) 368-7420.

Sincerely, cc: B. S. Mallett, Regional Administrator, NRC Region IV N. Kalyanam, NRC Project Manager, San Onofre Units 2, and 3 C. C. Osterholtz, NRC Senior Resident Inspector, San Onofre Units 2 and 3