ML13214A020

Diablo Canyon Power Plant, Unit 2 - Acceptance Review Email, Relief Request NDE-PNS-U2, Requirements for Examination Coverage of ASME Class 1 Pressurizer Nozzle-to-Head Welds, Third 10-Year Inservice Inspection Interval (TAC No. MF2441)

ML13214A020
Person / Time
Site:	Diablo Canyon
Issue date:	08/01/2013
From:	Polickoski J T Plant Licensing Branch IV
To:	Soenen P R Pacific Gas & Electric Co
Polickoski J T
References
TAC MF2441
Download: ML13214A020 (1)

Text

1Burkhardt, JanetFrom:Polickoski, JamesSent:Thursday, August 01, 2013 6:15 PMTo:'Soenen, Philippe R'Cc:'Baldwin, Thomas (DCPP)'; Burkhardt, JanetSubject:Acceptance Review for Diablo Canyon U2 ASME Section XI Inservice Inspection Program Relief Request NDE-PNS-U2 to Allow Use of Alternative Examination Volume Coverage Requirements (TAC No. MF2441)Philippe Soenen Supervisor, Regulatory Services By letter dated July 10, 2013 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML13192A082), Pacific Gas and Electric Company (PG&E, the licensee) submitted a request for relief from the requirements of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code,Section XI, for Diablo Canyon Power Plant, Unit 2, pursuant to Title 10 of the Code of Federal Regulations (10 CFR), Section 50.55a(g)(5)(iii). Specifically, the licensee requests to use alternative ultrasonic examinations to the volumetric examination requirements of the ASME Boiler and Pressure Vessel Code,Section XI, Appendix I, I-2100 and Figure IWB-2500-7(b).

The purpose of this e-mail is to provide the results of the U.S. Nuclear Regulatory Commission (NRC) staff's acceptance review of this relief request. The acceptance review was performed to determine if there is sufficient technical information in scope and depth to allow the NRC staff to complete its detailed technical review. The acceptance review is also intended to identify whether the application has any readily apparent information insufficiencies in its characterization of the regulatory requirements or the licensing basis of the plant.

The NRC staff has reviewed your application and concluded that it does provide technical information in sufficient detail to enable the NRC staff to complete its detailed technical review and make an independent assessment regarding the acceptability of the proposed request in terms of regulatory requirements and the protection of public health and safety and the environment. Given the lesser scope and depth of the acceptance review as compared to the detailed technical review, there may be instances in which issues that impact the NRC staff's ability to complete the detailed technical review are identified despite completion of an adequate acceptance review. If additional information is needed, you will be advised by separate correspondence.

If you have questions, please contact me at 301-415-5430, james.polickoski@nrc.gov James Polickoski Project Manager, Diablo Canyon Power Plant US NRC/NRR/DORL/LPL4 james.polickoski@nrc.gov 301-415-5430