ND-23-0480, ITAAC Closure Notification on Completion of ITAAC Item 2.7.04.03 (Index Number 716)

ITAAC Closure Notification on Completion of ITAAC Item 2.7.04.03 (Index Number 716)

ML23160A285
Person / Time
Site:	Vogtle
Issue date:	06/09/2023
From:	Coleman J Southern Nuclear Operating Co
To:	Office of Nuclear Reactor Regulation, Document Control Desk
References
ITAAC 2.7.04.03, ND-23-0480
Download: ML23160A285 (1)

Text

Jamie M. Coleman 7825 River Road Regulatory Affairs Director Waynesboro, GA 30830 Vogtle 3 & 4 706-848-6926 tel June 9, 2023 Docket No.: 52-026 ND-23-0480 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 Item 2.7.04.03 [Index Number 716]

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 2.7.04.03 [Index Number 716].

This ITAAC confirms controls exist in the Main Control Room (MCR) to cause the components identified in Combined License (COL) Table 2.7.4-1 to perform the listed functions and to verify the displays of the parameters can be retrieved in the MCR. 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) request 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 A. 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 2.7.04.03 [Index Number 716]

JMC/ALH/sfr

U.S. Nuclear Regulatory Commission ND-23-0480 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-23-0480 Enclosure Page 1 of 4 Southern Nuclear Operating Company ND-23-0480 Enclosure Vogtle Electric Generating Plant (VEGP) Unit 4 Completion of ITAAC 2.7.04.03 [Index Number 716]

U.S. Nuclear Regulatory Commission ND-23-0480 Enclosure Page 2 of 4 ITAAC Statement Design Commitment

3. Controls exist in the MCR to cause the components identified in Table 2.7.4-1 to perform the listed function.

4. Displays of the parameters identified in Table 2.7.4-1 can be retrieved in the MCR.

Inspections, Tests, Analyses Testing will be performed on the components in Table 2.7.4-1 using controls in the MCR.

Inspection will be performed for retrievability of the parameters in the MCR.

Acceptance Criteria Controls in the MCR operate to cause the components listed in Table 2.7.4-1 to perform the listed functions.

The displays identified in Table 2.7.4-1 can be retrieved in the MCR.

ITAAC Determination Basis Tests and inspections are performed to ensure controls exist in the Main Control Room (MCR) to cause the components identified in Combined License (COL) Table 2.7.4-1 (Attachment A) to perform the listed functions and to verify the displays of the parameters listed in Attachment A can be retrieved in the Main Control Room (MCR).

Controls in the MCR operate to cause the components listed in Table 2.7.4-1 to perform the listed functions.

Testing was performed in accordance with Unit 4 preoperational test procedure listed in Reference 1 to verify controls in the MCR operated to cause the Diesel Generator Building Ventilation System (VZS) components (fans and heaters) listed in COL appendix C Table 2.7.4-1 (Attachment A) to perform the listed functions. At a MCR operator workstation, the fans listed in Attachment A were started using Plant Control System (PLS) controls from the MCR.

For the heaters listed in Attachment A, the applicable heater controller was locally adjusted to above ambient temperature and the heaters were enabled using PLS controls from the MCR.

Inspections verified the fans started and heaters energized on the PLS monitor in the MCR and was documented in the test.

Unit 4 preoperational test results (Reference 1) confirm that controls in the MCR operated to cause the components listed in Table 2.7.4-1 to perform the listed functions.

The displays identified in Table 2.7.4-1 can be retrieved in the MCR.

An inspection was performed in accordance with the Unit 4 preoperational test procedure listed in Reference 1 for VZS component indication verifications, and visually confirmed that when

U.S. Nuclear Regulatory Commission ND-23-0480 Enclosure Page 3 of 4 each of the displays of parameters identified in Attachment A was summoned at a MCR workstation, the summoned plant parameter appeared on a display monitor at that MCR workstation.

The Unit 4 preoperational test results (Reference 1) confirm that the VEGP Unit 4 plant parameter displays identified in Attachment A can be retrieved in the MCR.

Reference 1 is available for NRC inspection as well as the Unit 4 1TAAC 2.7.04.03 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 2.7.04.03 (Reference 2) and is available for NRC review.

ITAAC Completion Statement Based on the above information, SNC hereby notifies the NRC that ITAAC 2.7.04.03 was performed for VEGP Unit 4 and that the prescribed acceptance criteria were 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-VZS-ITR-800716, Rev 0, Unit 4 Test Results for VZS Diesel Generator Building Heating and Ventilation System Controls and Indications.

2. 2.7.04.03-U4-CP-Rev0, ITAAC Completion Package

U.S. Nuclear Regulatory Commission ND-23-0480 Enclosure Page 4 of 4 Attachment A Table 2.7.4-1 Control Equipment Name Tag No. Display Function Diesel Generator Room A Standby VZS-MY-V01A Yes Start Exhaust Fans VZS-MY-V02A (Run Status)

Diesel Generator Room B Standby VZS-MY-V01B Yes Start Exhaust Fans VZS-MY-V02B (Run Status)

Service Module A Air Handling Units VZS-MA-01A Yes Start (AHU) Supply Fan (Run Status)

Service Module B AHU Supply Fan VZS-MA-01B Yes Start (Run Status)

Diesel Oil Transfer Module Enclosure VZS-MY-V03A Yes Start A Exhaust Fan (Run Status)

Diesel Oil Transfer Module Enclosure VZS-MY-U03A Yes Energize A Electric Unit Heater (Run Status)

Diesel Oil Transfer Module Enclosure VZS-MY-V03B Yes Start B Exhaust Fan (Run Status)

Diesel Oil Transfer Module Enclosure VZS-MY-U03B Yes Energize B Electric Unit Heater (Run Status)