ML100341111
| ML100341111 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 02/03/2010 |
| From: | Wang A Plant Licensing Branch IV |
| To: | Baldwin T, Parker L Pacific Gas & Electric Co |
| Wang A, NRR/DORL/LPL4, 301-415-1445 | |
| References | |
| TAC ME3018, TAC ME3019 | |
| Download: ML100341111 (2) | |
Text
From:
Wang, Alan Sent:
Wednesday, February 03, 2010 2:27 PM To:
Baldwin, Thomas (DCPP); Parker, Larry M Cc:
Lent, Susan; Burkhardt, Janet
Subject:
Acceptance Review for Diablo Canyon License Amendment Request For Delayed Offsite Power Circuit Licensing Basis Change (ME3018 and ME3019)
Tom and Larry:
By letter dated December 29, 2009, Pacific Gas and Electric Company (PG&E) requested an amendment to the Facility Operating License for Diablo Canyon Power Plant, Unit Nos. 1 and 2 (DCPP). The proposed License Amendment Request (LAR)09-093 will revise the licensing basis as described in the Final Safety Analysis Report Update (FSARU) to discuss the conformance of the delayed access offsite power circuit (the 500-kV delayed access circuit) to the General Design Criterion 17 requirement that each of the offsite power circuits be designed to be available in sufficient time following a loss of all onsite alternating current power supplies and the other offsite electric power circuit, to assure that specified acceptable fuel design limits and design conditions of the reactor coolant pressure boundary are not exceeded. The proposed amendment will also add information related to reactor coolant pump seal performance during and after (1) a loss of seal injection (with continued thermal barrier cooling); (2) a loss of thermal barrier cooling (with continued seal injection); and (3) a loss of all seal cooling (both thermal barrier cooling and seal injection). The purpose of this letter is to provide the results of the U.S. Nuclear Regulatory Commission (NRC) staff's acceptance review of this amendment 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.
Consistent with Section 50.90 of Title 10 of the Code of Federal Regulations (10 CFR),
an amendment to the license must fully describe the changes requested, and following as far as applicable, the form prescribed for original applications. Section 50.34 of 10 CFR addresses the content of technical information required. This section stipulates that the submittal address the design and operating characteristics, unusual or novel design features, and principal safety considerations.
The NRC staff has reviewed your application and concluded that it does provide technical information in sufficient detail to enable the staff to proceed with its detailed technical review and make an independent assessment regarding the acceptability of the proposed amendment in terms of regulatory requirements and the protection of public health and safety and the environment. If additional information is needed for the staff to complete its technical review, you will be advised by separate correspondence.
If you have any questions, please contact me at (301) 415-1445.
Alan Wang Project Manager (Diablo Canyon)
Nuclear Regulatory Commission Division of Operating Reactor Licensing Alan.Wang@NRC.gov Tel: (301) 415-1445 Fax: (301) 415-1222 E-mail Properties Mail Envelope Properties (C0A338EE37A11447B136119705BF9A3F5A45FE69AA)
Subject:
Acceptance Review for Diablo Canyon License Amendment Request For Delayed Offsite Power Circuit Licensing Basis Change (ME3018 and ME3019)
Sent Date: 2/3/2010 2:27:29 PM Received Date: 2/3/2010 2:27:29 PM From: Wang, Alan Created By: Alan.Wang@nrc.gov Recipients:
TRB1@pge.com (Baldwin, Thomas (DCPP))
Tracking Status: None LMP1@pge.com (Parker, Larry M)
Tracking Status: None Susan.Lent@nrc.gov (Lent, Susan)
Tracking Status: None Janet.Burkhardt@nrc.gov (Burkhardt, Janet)
Tracking Status: None Post Office:
HQCLSTR02.nrc.gov Files Size Date & Time MESSAGE 8192 2/3/2010 Options Expiration Date:
Priority: olImportanceNormal ReplyRequested: False Return Notification: False Sensitivity: olNormal Recipients received: