ML20007F795
| ML20007F795 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 01/06/2020 |
| From: | Vaughn T NRC/NRR/DORL/LPL4 |
| To: | Geoffrey Miller Dominion Generation |
| References | |
| Download: ML20007F795 (3) | |
Text
From:
Thomas, Vaughn Sent:
Monday, January 6, 2020 2:02 PM To:
gary.d.miller@dominionenergy.com Cc:
Miller, Ed
Subject:
Surry RAI Regarding its Rx Coolant P-T Limits LAR Attachments:
Final RAI for Surry Regarding its Rx Coolant P-T Limits LAR.docx
- Gary, The attached file constitutes the staffs issuance of the final RAI to you. The staff expects your response to the RAI within 30 days from todays date, January 6, 2020.
Thanks Vaughn Vaughn Thomas, Project Manager Plant Licensing Branch 4 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Vaughn.Thomas@nrc.gov 301-415-5897
Hearing Identifier:
NRR_DRMA Email Number:
374 Mail Envelope Properties (CH2PR09MB4266017C95008A1011B7B00CF43C0)
Subject:
Surry RAI Regarding its Rx Coolant P-T Limits LAR Sent Date:
1/6/2020 2:02:20 PM Received Date:
1/6/2020 2:02:00 PM From:
Thomas, Vaughn Created By:
Vaughn.Thomas@nrc.gov Recipients:
"Miller, Ed" <Ed.Miller@nrc.gov>
Tracking Status: None "gary.d.miller@dominionenergy.com" <gary.d.miller@dominionenergy.com>
Tracking Status: None Post Office:
CH2PR09MB4266.namprd09.prod.outlook.com Files Size Date & Time MESSAGE 445 1/6/2020 2:02:00 PM Final RAI for Surry Regarding its Rx Coolant P-T Limits LAR.docx 29965 Options Priority:
Normal Return Notification:
No Reply Requested:
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REQUEST FOR ADDITIONAL INFORMATION UPDATE OF REACTOR COOLANT SYSTEM HEATUP AND COOLDOWN PRESSURE-TEMPERATURE LIMITATIONS FIGURES FOR SUBSEQUENT LICENSE RENEWAL PALO VERDE NUCLEAR GENERATING STATION, UNIT 1 VIRGINIA ELECTRIC AND POWER COMPANY DOCKET NOS. 50-280 AND 50-281 By letter dated September 19, 2019 (Agencywide Document Access and Management System (ADAMS) Accession Number ML19269B775) Virginia Electric and Power Company (VEPC, the licensee) submitted a license amendment request (LAR) to revise Technical Specifications (TS) 3.4.3, [Reactor Coolant System] Pressure and Temperature Limits, for Surry Power Station (SPS), Units 1 and 2. Specifically, the licensee proposed to: 1) update the cumulative core burnup applicability limit (Effective Full Power Years; EFPY) from 48 to 68 EFPY, and 2) revise and relocate the limiting material property basis from the TS figures to the TS Basis. The licensee proposed that the 48-EFPY pressure-temperature (P-T) limits were acceptable for operation out to 68 EFPY. The licensees analysis providing the technical basis for their proposal is found in WCAP-18242 (ADAMS Accession No. ML18085A161) and WCAP-18243 (ADAMS Accession No. ML18085A161).
To complete its evaluation, the NRC staff requests additional information as follows.
- 1. The licensees technical basis for demonstrating the acceptability of the 48-EFPY P-T curves for 68 EFPY is documented in WCAP-18242 and WCAP-18243. The licensee submitted as part of the SLR application WCAP-18242, Rev. 0, and WCAP-18243, Rev.
0 (see ADAMS Accession Nos. ML18085A161 and ML18085A164, respectively). The licensees TS LAR references WCAP-18242, Rev. 2, and WCAP-18243, Rev. 3. The staff requests that the licensee provide the latest versions of WCAP-18242 and WCAP-18243 to be made publicly available in ADAMS.