ML110560294

E-mail, Questions for Future Pre-Licensing Meeting 3 with Pacific Gas and Electric Company to Discuss Long-Term Seismic Program License Amendment Request

ML110560294
Person / Time
Site:	Diablo Canyon
Issue date:	02/25/2011
From:	Polickoski J Plant Licensing Branch IV
To:	Soenen P Pacific Gas & Electric Co
Polickoski J, NRR/DORL/LPL4, 415-5430
References
TAC ME5033, TAC ME5034
Download: ML110560294 (2)

Text

From:

Polickoski, James Sent:

Friday, February 25, 2011 9:59 AM To:

Soenen, Philippe R Cc:

Baldwin, Thomas (DCPP); Markley, Michael; Manoly, Kamal; Kammerer, Annie; Smith, Maxwell; Farnholtz, Thomas; Peck, Michael; Denissen, Christie; Braisted, Jonathan; Deese, Rick; Wang, Alan; Miller, Geoffrey; Uselding, Lara; Vegel, Anton; Kennedy, Kriss; Lent, Susan; Burkhardt, Janet

Subject:

Questions for pre-licensing meeting #3 for DCPP proposed LTSP license amendment Signed By:

james.polickoski@nrc.gov

Philippe, As discussed, the questions the NRC staff would like PG&E to discuss at the third pre-licensing meeting for the Diablo Canyon Power Plant (DCPP) proposed Long Term Seismic program (LTSP) license amendment are:

1. What are the entry conditions (criteria) for using the LTSP flowchart? For what will this flowchart be specifically used?

2. How will the LTSP analysis flowchart be utilized to qualify new plant equipment, perform plant modifications, perform condition evaluations, and/or evaluate non-conforming/degraded conditions with specific discussion on the LTSP analysis and licensing basis relationship to the existing design and licensing bases of the OBE, SSE, HE, GDC 2, and Part 100?

3. How do the results of an LTSP flowchart evaluation (either deterministic, probabilistic, or both) for LTSP evaluated ground motions specifically relate to the three licensed, associated, and existing seismic ground motion equipment performance criteria of the OBE, SSE, HE as well as GDC 2, and Part 100, and how will these LTSP analysis results be used together in conjunction with the OBE, SSE, HE, GDC 2, and Part 100 as licensing basis for future licensing actions?

4. When performing future operability determinations, how will the LTSP analysis flowchart be utilized to include specific discussions on the employment of each side of the chart?

5. For the Shoreline Fault and for future unevaluated seismic ground motions, how are safety-related SSC code allowables being evaluated for exceedance for the OBE, SSE, and HE where the LTSP ground motion spectra is not immediately bounding and safety-related SSCs are relevant in the applicable parameter range where LTSP is not bounding?

Also, we have selected Thursday, March 24, 2010 from 1-4 pm EST (10-1 PST) as our primary time slot for the public meeting.

Please provide feedback if a call is needed to clarify these questions and whether your staff can accommodate the March 24 date in question by COB, Tuesday, March 1, 2011.

Thanks, Jim

James T. Polickoski Project Manager - Callaway, Diablo Canyon US NRC/NRR/DORL/LPL4 james.polickoski@nrc.gov 301-415-5430