ND-20-0880, ITAAC Closure Notification on Completion of ITAAC 2.3.11.03c (Index Number 455)

ITAAC Closure Notification on Completion of ITAAC 2.3.11.03c (Index Number 455)

ML22055B150
Person / Time
Site:	Vogtle
Issue date:	02/24/2022
From:	Yox M Southern Nuclear Operating Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
ND-20-0880
Download: ML22055B150 (6)

Text

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MichaelJ. Vox 7825 River Road

^OLitn0rn iNUCi0dr Regulatory Affairs Director Waynesboro, GA 30830 Vogtle 3 & 4 706-848-6459 tel FEB 2 4 2022 Docket No.:

52-025 ND-20-0880 10CFR 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 ITAAC 2.3.11.03c findex Number 4551 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 2.3.11.03c [Index Number 455]. This ITAAC verifies that with a simulated high oxygen signal, the Gaseous Radwaste System (WGS) nitrogen purge valve opens and the Liquid Radwaste System (WLS) degasifier vacuum pumps stop. 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 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.

Michael J. Vox Regulatory Affairs Director Vogtle 3 & 4

Enclosure:

Vogtle Electric Generating Plant (VEGP) Unit 3 Completion of ITAAC 2.3.11.03c [Index Number 455]

MJY/DLW/sfr

U.S. Nuclear Regulatory Commission ND-20-0880 Page 2 of 3 To:

Southern Nuclear Operating Company/ Georgia Power Company Mr. Peter P. Sena III Mr. D. L. McKlnney 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. Beiike Mr. S. Leighty Ms. A. C. Chamberlain Mr. J. C. Haswell Document Services RTYPE: VND.LI.L06 File AR.01.02.06 Nuclear Reouiatorv 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. O. 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-20-0880 Page 3 of 3 Qqlethorpe Power Corporation Mr. R. B. Brinkman Mr. E. Rasmussen Municipal Electric Authority of Georgia Mr. J. E. Fuller Mr. 8. M. Jackson Dalton Utilities Mr. T. Bundros Westinahouse Electric Company. LLC Dr. L. Oriani Mr. D. C. Durham Mr. M. M. Corletti Mr. Z. 8. Harper Mr. J. L. Coward Other Mr. 8. W. Kline, Bechtel Power Corporation Ms. L. Matis, Tetra Tech NUS, Inc.

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

Mr. 8. Roetger, Georgia Public Service Commission Mr. R. L. Trokey, Georgia Public Service Commission Mr. K. C. Greene, Troutman Sanders Mr. 8. Blanton, Baich Bingham

U.S. Nuclear Regulatory Commission ND-20-0880 Enclosure Page 1 of 3 Southern Nuclear Operating Company ND-20-0880 Enclosure Vogtle Electric Generating Plant (VEGP) Unit 3 Completion of ITAAC 2.3.11.03c [Index Number 455]

U.S. Nuclear Regulatory Commission ND-20-0880 Enclosure Page 2 of 3 ITAAC Statement Desion Commitment 3.c) The WGS is purged with nitrogen on indication of high oxygen levels in the system.

I nspections/T ests/Anal vses Tests will be performed to confirm that the presence of a simulated high oxygen level signal from the oxygen monitors (WGS-025A, -025B) causes the nitrogen purge valve (WGS-PL-V002) to open and the WLS degasifier vacuum pumps (WLS-MP-03A, -03B) to stop.

Acceptance Criteria A simulated high oxygen level signal causes the nitrogen purge valve (WGS-PL-V002) to open and the WLS degasifier vacuum pumps (WLS-MP-03A, -03B) to stop.

ITAAC Determination Basis Testing was performed in accordance with preoperational test procedure listed in Reference 1 to demonstrate that when a high oxygen level is simulated from the oxygen monitors (WGS-25A, -025B) the nitrogen purge valve (WGS-PL-V002) opens and the Liquid Radwaste System (WLS) degasifier vacuum pumps (WLS-I\\/IP-03A, 03B) stop.

The preoperational test procedure listed in Reference 1 ensured the WLS was aligned per the operating procedure, oxygen monitor B was removed from service, and that the WLS degasifier vacuum pump A (WLS-MP-03A) was running. A simulated high oxygen signal was generated from WGS oxygen monitor A (WGS-025A) and WGS-PL-V002 was verified to open and the running WLS degasifier vacuum pump A (WGS-025A) was verified to have stopped from main control room (MCR) indication. The test was then repeated using the opposite WLS degasifier vacuum pump B (WLS-MP-03B). This test sequence was then repeated using the WGS oxygen monitor B (WGS-025B) and WGS-PL-V002 was verified to open and degasifer vacuum pumps were verified to stop using MCR indication.

The results of this testing confirmed that a simulated high oxygen level signal caused the nitrogen purge valve (WGS-PL-V002) to open and the WLS degasifier vacuum pumps (WLS-MP-03A, -03B) to stop.

Reference 1 is available for NRC inspection as part of the Unit 3 ITAAC 2.3.11.03c 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 are no relevant ITAAC findings associated with this ITAAC. The ITAAC completion review is documented in the ITAAC 2.3.11.03c Completion Package (Reference 2) and is available for NRC review.

U.S. Nuclear Regulatory Commission ND-20-0880 Enclosure Page 3 of 3 ITAAC Completion Statement Based on the above Information, SNC hereby notifies the NRG that ITAAC 2.3.11.03c 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 NRG InsDectlonI

1. SV3-WGS-ITR-800455, Rev. 0, "Unit 3 Recorded Results of WGS Purged with Nitrogen on Indication of High Oxygen Levels: ITAAC 2.3.11.03c"

2. 2.3.11.03c-U3-CP-Rev0, ITAAC Completion Package