ND-23-0562, ITAAC Closure Notification on Completion of ITAAC 2.1.02.13c (Index Number 65)

ITAAC Closure Notification on Completion of ITAAC 2.1.02.13c (Index Number 65)

ML23185A003
Person / Time
Site:	Vogtle
Issue date:	07/04/2023
From:	Coleman J Southern Nuclear Operating Co
To:	Office of Nuclear Reactor Regulation, Document Control Desk
References
ND-23-0562, ITAAC 2.1.02.13c
Download: ML23185A003 (1)

Text

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

52-026 ND-23-0562 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 2.1.02.13c [Index Number 65]

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 2.1.02.13c [Index Number 65].

This ITAAC confirms that the reactor coolant pumps trip after receiving a signal from the Diverse Actuation System (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 2.1.02.13c [Index Number 65]

JMC/DLW/sfr

U.S. Nuclear Regulatory Commission ND-23-0562 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-23-0562 Enclosure Page 1 of 2 Southern Nuclear Operating Company ND-23-0562 Enclosure Vogtle Electric Generating Plant (VEGP) Unit 4 Completion of ITAAC 2.1.02.13c [Index Number 65]

U.S. Nuclear Regulatory Commission ND-23-0562 Enclosure Page 2 of 2 ITAAC Statement Design Commitment 13.c) The RCPs trip after receiving a signal from the DAS.

Inspections/Tests/Analyses Testing will be performed using real or simulated signals into the DAS.

Acceptance Criteria The RCPs trip after receiving a signal from the DAS.

ITAAC Determination Basis Testing was performed as described in ITAAC Technical Report SV4-RCS-ITR-800065 (Reference 1) to verify that the Reactor Coolant Pumps (RCPs) trip after receiving a signal from the Diverse Actuation System (DAS). Real signals were provided into the DAS and the RCPs were confirmed to trip after a signal is received from the DAS.

Each RCP Variable Frequency Drive (VFD) feeder breaker was placed in the closed position and a manual Core Makeup Tank (CMT) actuation was initiated. The CMT actuation signal from the DAS caused the RCPs to trip when the RCP VFD feeder breakers opened. The RCP VFD feeder breakers were verified locally to be open. The Unit 4 test results documented in Reference 1 confirm that each RCP trips after receiving a signal from the DAS.

Reference 1 is available for NRC inspection as part of the ITAAC 2.1.02.13c 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 2.1.02.13c (Reference 2) and is available for NRC review.

ITAAC Completion Statement Based on the above information, SNC hereby notifies the NRC that ITAAC 2.1.02.13c 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.

References (available for NRC inspection)

1. SV4-RCS-ITR-800065, Unit 4 Testing Results for Reactor Coolant Pump Trip From DAS:

ITAAC 2.1.02.13c, NRC Index Number: 65, Rev 0

2. 2.1.02.13c-U4-CP-Rev0, ITAAC Completion Package