ND-22-0158, ITAAC Closure Notification on Completion of 2.3.09.03.ii (Index Number 424)

ITAAC Closure Notification on Completion of 2.3.09.03.ii (Index Number 424)

ML22066B287
Person / Time
Site:	Vogtle
Issue date:	03/07/2022
From:	Yox M Southern Nuclear Operating Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
ND-22-0158
Download: ML22066B287 (13)

Text

A Southern Nuclear Michael J . Yo x Regulatory Affairs Director Vogtle 3 & 4 7825 River Road Waynesboro, GA 30830 706-848-6459 tel MAR 0*7 2022 Docket No.: 52-025 ND-22-0158 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 3 ITAAC Closure Notification on Completion of 2.3.09.03.ii [Index Number 424]

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 3 Inspections, Tests, Analyses, and Acceptance Criteria (ITAAC) Item 2.3.09.03.ii [Index Number 424] to verify that 66 hydrogen igniters are provided at the locations specified, that the surface temperature meets or exceeds 1700°F, that controls in the main control room (MCR) operate to energize the igniters, and that displays identified in the Combined License (COL)

Appendix C Table 2.3.9-1 can be retrieved in the MCR. The closure process for this ITAAC is based on the guidance described in NEI 08-01, "Industry Guideline for the ITAAC Closure Process under 10 CFR Part 52", which is 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, Michael J. Yox Regulatory Affairs Director Vogtle 3 & 4

Enclosure:

Vogtle Electric Generating Plant (VEGP) Unit 3 Completion of ITAAC 2.3.09.03.ii [Index Number 424)

MJY/JTK/sfr

U.S. Nuclear Regulatory Commission ND-22-0158 Page 2 of 3 To:

Southern Nuclear Operating Company/ Georgia Power Company Mr. Peter P. Sena Ill Mr. D. L. McKinney Mr. H. Nieh Mr. G. Chick Mr. S. Stimac Mr. P. Martino Mr. J.B. Williams Mr. M. J. Yox Mr. A. S. Parton Ms. K. A. Roberts Ms. J.M. Coleman Mr. C. T. Defnall Mr. C. E. Morrow Mr. K. J. Drudy Mr. J. M. Fisher Mr. R. L. Beilke Mr. S. Leighty Ms. A. C. Chamberlain Mr. J. C. Haswell Document Services RTYPE : VND.LI.L06 File AR.01 .02.06 Nuclear Regulatory Commission Ms. M. Bailey Mr. M. King Mr. G. Bowman Ms. A. Veil Mr. C. P. Patel Mr. G. J. Khouri Mr. C. J. Even Mr. B. J. Kemker Ms. N. C. Coovert Mr. C. Welch Mr. J. Gaslevic Mr. 0. Lopez-Santiago Mr. G. Armstrong Mr. M. Webb Mr. T. Fredette Mr. C. Santos Mr. B. Davis Mr. J. Vasquez Mr. J . Eargle Mr. T. Fanelli Ms. K. Mccurry Mr. J. Parent Mr. B. Griman Mr. V. Hall

U.S. Nuclear Regulatory Commission ND-22-0158 Page 3 of 3 Oglethorpe Power Corporation Mr. R. B. Brinkman Mr. E. Rasmussen Municipal Electric Authority of Georgia Mr. J. E. Fuller Mr. S. M. Jackson Dalton Utilities Mr. T. Bundros Westinghouse Electric Company, LLC Dr. L. Oriani Mr. D. C. Durham Mr. M. M. Corletti Mr. Z. S. Harper Mr. J. L. Coward Other Mr. S. W. Kline , Bechtel Power Corporation Ms. L. Matis, Tetra Tech NUS, Inc.

Dr. W. R. Jacobs, Jr. , Ph .D., GOS Associates, Inc.

Mr. S. Roetger, Georgia Public Service Commission Mr. R. L. Trokey, Georgia Public Service Commission Mr. K. C. Greene, Troutman Sanders Mr. S. Blanton , Balch Bingham

U.S. Nuclear Regulatory Commission ND-22-0158 Enclosure Page 1 of 10 Southern Nuclear Operating Company ND-22-0158 Enclosure Vogtle Electric Generating Plant (VEGP) Unit 3 Completion of ITAAC 2.3.09.03.ii [Index Number 424]

U.S. Nuclear Regulatory Commission ND-22-0158 Enclosure Page 2 of 10 IT AAC Statement Design Commitment

3. The VLS provides the nonsafety-related function to control the containment hydrogen concentration for beyond design basis accidents.

4.a) Controls exist in the MCR to cause the components identified in Table 2.3.9-2 to perform the listed function .

5. Displays of the parameters identified in Table 2.3.9-1 can be retrieved in the MCR.

Inspections/Tests/Analyses i) Inspection for the number of igniters will be performed.

ii) Operability testing will be performed on the igniters.

Testing will be performed on the igniters using the controls in the MCR .

Inspection will be performed for retrievability of the displays identified in Table 2.3.9-1 in the MCR.

Acceptance Criteria i) At least 66 hydrogen igniters are provided inside containment at the locations specified in Table 2.3.9-2.

ii) The surface temperature of the igniter meets or exceeds 1700°F.

Controls in the MCR operate to energize the igniters.

Displays identified in Table 2.3.9-1 can be retrieved in the MCR.

ITAAC Determination Basis This ITAAC performed testing and inspections to verify that the Containment Hydrogen Control System (VLS) provides the nonsafety-related function to control the containment hydrogen concentration for beyond design basis accidents by ensuring that the required number of hydrogen igniters were installed in the appropriate locations as specified by VEGP Combined License (COL) Appendix C Table 2.3.9-2 (Attachment A) and that the surface temperature of the igniters met or exceeded 1700°F. This ITAAC also verifies that controls exist in the Main Control Room (MCR) to cause the components identified in COL Appendix C Table 2.3.9-2 (Attachment A) to perform the listed function and that displays of the parameters identified in COL Appendix C Table 2.3.9-1 (Attachment B) can be retrieved in the MCR.

U.S. Nuclear Regulatory Commission ND-22-0158 Enclosure Page 3 of 10 i) At least 66 hydrogen igniters are provided inside containment at the locations specified in Table 2.3.9-2.

An inspection was performed in accordance with the Unit 3 ITAAC Technical Report SV3-VLS-ITR-800424 (Reference 1) to verify that at least 66 hydrogen igniters are provided inside containment at the locations specified In Attachment A.

The inspection was conducted by performing a walk down of the installed hydrogen igniters to verify the correct number of hydrogen igniters were installed and that they were all in the proper location. The results of the inspection verified that for Unit 3 there are at least 66 hydrogen igniters provided inside containment at the locations specified In Table 2.3.9-2.

ii) The surface temperature of the igniter meets or exceeds 1700°F.

Testing was performed in accordance with Unit 3 preoperational test procedure and work orders listed in Reference 2 to verify that the surface temperature of the igniter meets or exceeds 1700°F.

Testing began by installing appropriate personnel protection barriers and closing the power supply breakers for the hydrogen igniters and control cabinets. Each hydrogen igniter group control was placed to ON and the temperature of each igniter was taken and verified to meet acceptance criteria.

The results of the testing on Unit 3 verifies the surface temperature of each igniter meets or exceeds 1700°F.

Controls in the MCR operate to energize the igniters.

Testing was performed in accordance with Unit 3 preoperational test procedures and work orders listed in Reference 2 to verify that controls in the MCR operate to energize the igniters.

Testing was performed at an operator workstation in Unit 3 MCR and placed the hydrogen igniter controls to ON. All of the igniters listed in Attachment A were verified to energize by measuring the temperature which was performed by item ii) above.

Displays identified in Table 2.3.9-1 can be retrieved in the MCR.

An inspection was performed in accordance with the Unit 3 component test package work order listed in Reference 2 for VLS indication verifications, and visually confirmed that when each of the displays of parameters identified in Attachment B was summoned at an MCR workstation, the summoned plant parameter appeared on a display monitor at that MCR workstation.

The completed test and inspection results (References 1 and 2) confirm that at least 66 hydrogen igniters are provided inside containment at the locations specified in Table 2.3.9-2, that the surface temperature of the igniters meets or exceeds 1700°F, that controls in the MCR operate to energize the igniters, and that the displays identified in Table 2.3.9-1 can be retrieved in the MCR.

References 1 and 2 are available for NRC inspection as part of Unit 3 ITAAC Completion Package (Reference 3).

U.S. Nuclear Regulatory Commission ND-22-0158 Enclosure Page 4 of 1O 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 are no relevant ITAAC findings associated with this ITAAC. The ITAAC completion review is documented in the ITAAC Completion Package for ITAAC 2.3.09.03.ii (Reference 3) and is available for NRC review.

ITAAC Completion Statement Based on the above information, SNC hereby notifies the NRC that ITAAC 2.3.09.03.ii was performed for VEGP Unit 3 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. SV3-VLS-ITR-800424, Rev. 0, "Unit 3 Containment Hydrogen Control (VLS) Igniter Locations Inspection: ITAAC 2.3.09.03.ii Item 3.i) NRC Index Number: 424"

2. SV3-VLS-ITR-801424, Rev. 0, "Unit 3 Containment Hydrogen Control (VLS) Igniter Functionality Test and Parameter Displays: ITAAC 2.3.09.03.ii, Items 3.ii),4.a) , and 5 NRC Index Number: 424

3. 2.3.09.03.ii-U3-CP-Rev0 "ITAAC Completion Package"

U.S. Nuclear Regulatory Commission ND-22-0158 Enclosure Page 5 of 10 Attachment A COL Appendix C Table 2.3.9-2 Equipment Tag Number Function Power Group Location Room No.

Name Number Hydrogen VLS-EH-01 Energi ze 1 Tunnel 11204 Igniter 01 connection loop compa rtments Hydrogen VLS-EH -02 Energize 2 Tunnel 11204 Igniter 02 connection loop compartments Hydrogen VLS-EH-03 Energize 1 Tunnel 11204 Ignite r 03 connection loop compartments Hydrogen VLS-EH-04 Energize 2 Tunnel 11204 Igniter 04 connection loop compartments Hydrogen VLS-EH-05 Energize 1 Loop 11402 Igniter 05 compartment 02 Hydrogen VLS-EH-06 Energize 2 Loop 11502 Ignite r 06 compartment 02 Hydrogen VLS-EH-07 Energize 2 Loop 11402 Igniter 07 compartment 02 Hydrogen VLS-EH -08 Ene rgize 1 Loop 11502 Igniter 08 compartment 02 Hydrogen VLS-EH -09 Energize 1 In-containment 11305 Igniter 09 refueling water storage tank (IRWST) sparger side Hydrogen VLS-EH-10 Energize 2 IRWST sparger 11305 Igniter 10 side Hydrogen VLS-EH -11 Energize 2 Loop 11401 Ignite r 11 compartment 01 Hydrogen VLS-EH-12 Energi ze 1 Loop 11501 Igniter 12 compartment 01

U.S. Nuclear Regulatory Commission ND-22-0158 Enclosure Page 6 of 10 Attachment A (con't)

Equipment Tag Number Function Power Group Location Room No.

Name Number Hydrogen VLS-EH-13 Energize 1 Loop 11401 Igniter 13 compartment 01 Hydrogen VLS-EH-14 Energize 2 Loop 11501 Igniter 14 compartment 01 Hydrogen VLS-EH-15 Energize 2 IRWST vacuum 11305 Igniter 15 breaker vents Hydrogen VLS-EH-16 Energize 1 IRWST vacuum 11305 Igniter 16 breaker vents Hydrogen VLS-EH-17 Energize 2 Northeast valve 11207 Igniter 17 room Hydrogen VLS-EH-18 Energize 1 Northeast 11207 Igniter 18 accumulator room Hydrogen VLS-EH-19 Energize 2 East valve room 11208 Igniter 19 Hydrogen VLS-EH-20 Energize 2 Southeast 11206 Igniter 20 accumulator room Hydrogen VLS-EH-21 Energize 1 Southeast valve 11206 Igniter 21 room Hydrogen VLS-EH-22 Energize 1 Lower 11400 Igniter 22 compartment area (core makeup tank

[CMT] and valve area)

Hydrogen VLS-EH-23 Energize 2 Lower 11400 Igniter 23 compartment area (CMT and valve area)

Hydrogen VLS-EH-24 Energize 2 Lowe r 11400 Igniter 24 compartment area (CMT and valve area)

Hydrogen VLS-EH-25 Energize 2 Lower 11400 Igniter 25 compartment area {CMT and valve area)

U.S. Nuclear Regulatory Commission ND-22-0158 Enclosure Page 7 of 10 Attachment A (con't)

Equipment Tag Number Function Power Group Location Room No.

Name Number Hydrogen VLS-EH-26 Energize 2 Lower 11400 Igniter 26 compartment area (CMT and valve area)

Hydrogen VLS-EH-27 Energize 1 Lower 11300 Igniter 27 compartment area {CMT and valve area)

Hydrogen VLS-EH-28 Energize 1 Lower 11400 Igniter 28 compartment area (CMT and valve area)

Hydrogen VLS-EH-29 Energize 1 Lower 11400 Igniter 29 compartment area (CMT and valve area)

Hydrogen VLS-EH-30 Energize 2 Lowe r 11403 Igniter 30 compartment area (CMT and valve area)

Hydrogen VLS-EH-31 Energize 1 Lower 11400 Ignite r 31 compartment area (CMT and valve area)

Hydrogen VLS-EH -32 Energize 1 Lower 11400 Igniter 32 compartment area (CMT and valve area)

Hydrogen VLS-EH-33 Energize 2 North CVS 11209 Igniter 33 equipment room Hydrogen VLS-EH-34 Energize 1 North CVS 11209 Igniter 34 equipment room Hydrogen VLS-EH-35 Energize 1 IRWST hooded 11500 Igniter 35 vents Hydrogen VLS-EH-36 Energize 2 IRWST hooded 11500 Igniter 36 vents Hydrogen VLS-EH -37 Energize 1 IRWST hooded 11500 Igniter 37 vents

U.S. Nuclear Regulatory Commission ND-22-0158 Enclosure Page 8 of 10 Attachment A (con't)

Equipment Tag Number Function Power Group Location Room No.

Name Number Hydrogen VLS-EH-38 Energize 2 IRWST hooded 11500 Igniter 38 vents Hydrogen VLS-EH-39 Energize 1 Upper 11500 Igniter 39 compartment lower region Hydrogen VLS-EH-40 Energize 2 Upper 11500 Igniter 40 compartment lower region Hydrogen VLS-EH-41 Energize 2 Upper 11500 Igniter 41 compartment lower region Hydrogen VLS-EH-42 Energize 1 Upper 11500 Igniter 42 compartment lower region Hydrogen VLS-EH -43 Energize 1 Upper 11500 Igniter 43 compartment lower region Hydrogen VLS-EH-44 Energize 1 Upper 11500 Igniter 44 compartment lower region Hydrogen VLS-EH-45 Energize 2 Upper 11500 Igniter 45 compartment lower region Hydrogen VLS-EH-46 Energize 2 Upper 11500 Igniter 46 compartment lower region Hydrogen VLS-EH-47 Energize 1 Upper 11500 Igniter 47 compartment lower region Hydrogen VLS-EH-48 Energize 2 Upper 11500 Igniter 48 compartment lower region Hydrogen VLS-EH-49 Energize 1 Pressurizer 11503 Igniter 49 compartment Hydrogen VLS-EH-50 Energize 2 Pressurizer 11503 Igniter 50 compartment Hydrogen VLS-EH-51 Energize 1 Upper 11500 Igniter 51 compartment mid-region

U.S. Nuclear Regulatory Commission ND-22-0158 Enclosure Page 9 of 10 Attachment A (con 't)

Equipment Tag Number Function Power Group Location Room No.

Name Number Hydrogen VLS-EH-52 Energize 2 Upper 11500 Igniter 52 compartment mid -region Hydrogen VLS-EH -53 Energize 2 Upper 11500 Igniter 53 compartment mid-region Hydrogen VLS-EH-54 Energize 1 Upper 11500 Igniter 54 compartment mid-region Hydrogen VLS-EH-55 Energize 1 Refueling 11504 Igniter 55 cavity Hydrogen VLS-EH-56 Energize 2 Refueling 11504 Igniter 56 cavity Hydrogen VLS-EH-57 Energize 2 Refueling 11504 Igniter 57 cavity Hydrogen VLS-EH-58 Energize 1 Refueling 11504 Igniter 58 cavity Hydrogen VLS-EH-59 Energize 2 Pressurizer 11503 Igniter 59 compartment Hydroge n VLS-EH-60 Energize 1 Pressurizer 11503 Igniter 60 compartment Hydrogen VLS-EH-61 Energize 1 Upper 11500 Igniter 61 compartment-upper region Hydrogen VLS-EH-62 Energize 2 Upper 11500 Igniter 62 compa rtment-upper region Hydrogen VLS-EH-63 Energize 1 Upper 11500 Igniter 63 compartment-upper region Hydrogen VLS-EH -64 Energize 2 Upper 11500 Igniter 64 compartment-upper region Hydrogen VLS-EH-65 Energize 1 IRWST roof 11500 Igniter 65 vents Hydrogen VLS-EH -66 Energize 2 IRWST roof 11500 Igniter 66 vents

U.S . Nuclear Regulatory Commission ND-22-0158 Enclosure Page 10 of 10 Attachment B COL Appendix C Table 2.3.9-1 Equipment Tag No. Display Containment Hydroqen Monitor VLS-001 Yes Containment Hydroqen Monitor VLS-002 Yes Containment Hydrogen Monitor VLS-003 Yes