ND-23-0576, ITAAC Closure Notification on Completion of ITAAC 2.2.01.10c (Index Number 113)

ITAAC Closure Notification on Completion of ITAAC 2.2.01.10c (Index Number 113)

ML23187A568
Person / Time
Site:	Vogtle
Issue date:	07/06/2023
From:	Coleman J Southern Nuclear Operating Co
To:	Office of Nuclear Reactor Regulation, Document Control Desk
References
ND-23-0576
Download: ML23187A568 (1)

Text

Jamie M. Coleman Regulatory Affairs Director Vogtle 3 & 4 7825 River Road Waynesboro, GA 30830 706-848-6926 tel July 6, 2023 Docket No.:

52-026 ND-23-0576 10 CFR 52.99(c)(1)

U.S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555-0001 Southern Nuclear Operating Company Vogtle Electric Generating Plant Unit 4 ITAAC Closure Notification on Completion of ITAAC 2.2.01.10c [Index Number 113]

Ladies and Gentlemen:

In accordance with 10 CFR 52.99(c)(1), the purpose of this letter is to notify the Nuclear Regulatory Commission (NRC) of the completion of Vogtle Electric Generating Plant (VEGP) Unit 4 Inspections, Tests, Analyses, and Acceptance Criteria (ITAAC) Item 2.2.01.10c [Index Number 113]. This ITAAC confirms that the remotely operated valves, identified in Combined License (COL)

Appendix C Table 2.2.1-1 as having DAS control, perform the active function identified in Table 2.2.1-1 after receiving a signal from DAS. The closure process for this ITAAC is based on the guidance described in Nuclear Energy Institute (NEI) 08-01, Industry Guideline for the ITAAC Closure Process Under 10 CFR Part 52, which was endorsed by the NRC in Regulatory Guide 1.215.

This letter contains no new NRC regulatory commitments. Southern Nuclear Operating Company (SNC) requests NRC staff confirmation of this determination and publication of the required notice in the Federal Register per 10 CFR 52.99.

If there are any questions, please contact Kelli Roberts at 706-848-6991.

Respectfully submitted, Jamie M. Coleman Regulatory Affairs Director Vogtle 3 & 4

Enclosure:

Vogtle Electric Generating Plant (VEGP) Unit 4 Completion of ITAAC 2.2.01.10c [Index Number 113]

JMC/ALH/sfr

U.S. Nuclear Regulatory Commission ND-23-0576 Page 2 of 2 cc:

Regional Administrator, Region ll Director, Office of Nuclear Reactor Regulation (NRR)

Director, Vogtle Project Office NRR Senior Resident Inspector - Vogtle 3 & 4

U.S. Nuclear Regulatory Commission ND-23-0576 Enclosure Page 1 of 4 Southern Nuclear Operating Company ND-23-0576 Enclosure Vogtle Electric Generating Plant (VEGP) Unit 4 Completion of ITAAC 2.2.01.10c [Index Number 113]

U.S. Nuclear Regulatory Commission ND-23-0576 Enclosure Page 2 of 4 ITAAC Statement Design Commitment 10.c) The valves identified in Table 2.2.1-1 as having DAS control perform an active safety function after receiving a signal from DAS.

Inspections/Tests/Analyses Testing will be performed on remotely operated valves listed in Table 2.2.1-1 using real or simulated signals into the DAS.

Acceptance Criteria The remotely operated valves identified in Table 2.2.1-1 as having DAS control perform the active function identified in the table after receiving a signal from DAS.

ITAAC Determination Basis Testing was performed as described in ITAAC Technical Report SV4-CNS-ITR-800113 (Reference 1) to verify that the remotely operated valves identified in Combined License (COL)

Appendix C Table 2.2.1-1 (Attachment A) as having Diverse Actuation System (DAS) control perform an active safety function after receiving a signal from DAS. Testing was performed on the remotely operated valves identified in Attachment A using real signals into the DAS to verify they perform the active function identified in Attachment A after receiving a signal from DAS.

Reference 1 confirmed that the containment isolation valves with DAS control received a signal from DAS and performed the active function required. The valves were verified to be open, tested by manually actuating a Containment Isolation signal at the DAS panel in the Main Control Room (MCR), and verified to perform their active function (transfer closed) locally at each component. Reference 1 confirmed that the remotely operated valves identified in Attachment A as having DAS control perform the active function identified in Attachment A after receiving a signal from DAS.

Reference 1 is available for NRC inspection as part of the ITAAC 2.2.01.10c Completion Package (Reference 2).

ITAAC Finding Review In accordance with plant procedures for ITAAC completion, Southern Nuclear Operating Company (SNC) performed a review of all findings pertaining to the subject ITAAC and associated corrective actions. This review found there were no relevant ITAAC findings associated with this ITAAC. The ITAAC completion review is documented in the ITAAC Completion Package for ITAAC 2.2.01.10c (Reference 2) and is available for NRC review.

ITAAC Completion Statement Based on the above information, SNC hereby notifies the NRC that ITAAC 2.2.01.10c was performed for VEGP Unit 4 and that the prescribed acceptance criteria was met.

Systems, structures, and components verified as part of this ITAAC are being maintained in their as-designed, ITAAC compliant condition in accordance with approved plant programs and procedures.

U.S. Nuclear Regulatory Commission ND-23-0576 Enclosure Page 3 of 4 References (available for NRC inspection)

1. SV4-CNS-ITR-800113, Unit 4 Diverse Actuation System Control of Remotely Operated Containment System Isolation Valves: ITAAC 2.2.01.10c, Rev 0

2. 2.2.01.10c-U4-CP-Rev 0, ITAAC Completion Package

U.S. Nuclear Regulatory Commission ND-23-0576 Enclosure Page 4 of 4 Attachment A

• Excerpt from COL Appendix C Table 2.2.1-1

• Tag No.

• Equipment Name

• Active Function VFS-PL-V003 Containment Purge Inlet Containment Isolation Valve - ORC Transfer Closed VFS-PL-V004 Containment Purge Inlet Containment Isolation Valve - IRC Transfer Closed VFS-PL-V009 Containment Purge Discharge Containment Isolation Valve - IRC Transfer Closed VFS-PL-V010 Containment Purge Discharge Containment Isolation Valve - ORC Transfer Closed WLS-PL-V055 Sump Discharge Containment Isolation Valve - IRC Transfer Closed WLS-PL-V057 Sump Discharge Containment Isolation Valve - ORC Transfer Closed