ND-21-0992, ITAAC Closure Notification on Completion of Item 3.3.00.10.i (Index Number 815)

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ITAAC Closure Notification on Completion of Item 3.3.00.10.i (Index Number 815)
ML21308A285
Person / Time
Site: Vogtle Southern Nuclear icon.png
Issue date: 11/04/2021
From: Yox M
Southern Nuclear Operating Co
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
ND-21-0992
Download: ML21308A285 (1)
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Text

^Southern Nuclear Michael J. Yox Regulatory Affairs Director 7825 River Road Waynesboro, GA 30830 Vogtle 3 & 4 706-848-6459 tel NOV 0 A 2021 Docket No.: 52-025 ND-21-0992 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 Item 3.3.00.10.i [Index Number 8151 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 3.3.00.10.1 [Index Number 815] to verify that the total water flow from the leak chase collection system does not exceed 10 gal/hr. 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 Difector Vogtle 3 & 4

Enclosure:

Vogtle Electric Generating Plant(VEGP) Unit 3 Completion of ITAAC 3.3.00.10.1 [Index Number 815]

MJY/DLW/sfr

U.S. Nuclear Regulatory Commission ND-21-0992 Page 2 of 3 To:

Southern Nuclear Operating Company/ Georgia Power Company Mr. Peter P. Sena III Mr. D. L. McKinney Mr. H. Nieh Mr. G. Chick Mr. S. Stimac Mr. P. Martino 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. Belike Mr. S. Leighty Ms. A. C. Chamberlain Mr. J. C. Haswell Document Services RTYPE: VND.LI.L06 File AR.01.02.06 Nuclear Reoulatorv Commission Ms. M. Bailey M . M. King M G. Bowman Ms. A. Veil M . C. P. Patel M . G. J. Khourl M . C. J. Even M . B. J. Kemker Ms. N. C. Coovert M C. Welch M J. Gaslevic M O. Lopez-Santiago M G. Armstrong M M. Webb M T. Fredette M C. Santos M B. Davis M J. Vasquez M J. Eargle M E. Davidson M T. Fanelll Ms. K. McCurry M J. Parent M B. Griman M V. Hall

U.S. Nuclear Regulatory Commission ND-21-0992 Page 3 of 3 Qqiethorpe 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 Westinqhouse Electric Company. LLC Dr. L. Orlani Mr. D. 0. 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 NU8, Inc.

Dr. W. R. Jacobs, Jr., Ph.D., GD8 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, Balch Bingham

U.S. Nuclear Regulatory Commission ND-21-0992 Enclosure Page 1 of 3 Southern Nuclear Operating Company ND-21-0992 Enclosure Vogtle Electric Generating Plant(VEGP) Unit 3 Completion of ITAAC 3.3.00.10.1 [Index Number 815]

U.S. Nuclear Regulatory Commission ND-21-0992 Enclosure Page 2 of 3 ITAAC Statement Design Commitment

10. The shield building roof and PCS storage tank support and retain the PCS water sources.

The PCS storage tank has a stainless steel liner which provides a barrier on the inside surfaces of the tank. Leak chase channels are provided on the tank boundary liner welds.

Inspections/Tests/Analvses i) A test will be performed to measure the leakage from the PCS storage tank based on measuring the water flow out of the leak chase collection system.

Acceptance Criteria i) A report exists and concludes that total water flow from the leak chase collection system does not exceed 10 gal/hr.

ITAAC Determination Basis Testing was performed in accordance with Unit 3 preoperational test procedure 3-PCS-ITPP-502(Reference 1) to verify that total water flow from the leak chase collection system did not exceed 10 gal/hr.

Initial level for the Passive Containment Cooling Water Storage Tank(PCCWST) was established at > 96.1%. Initial condition in the Leak Chase Collection Pot(PCS-MT06) established a level in the range of the level instrument. A trend graph was started to track the flow into the pot to track the level change and the time for the level change to occur. A calculation was performed to determine the flowrate into PCS-MT06 using the change in level and elapsed time.

The result of the testing showed that the leakage from the PCS storage tank into Unit 3 Leak Chase Collection Pot was 0.0 gal/hr. This testing concluded that total water flow from the leak chase collection system does not exceed 10 gal/hr and is documented in reference 2.

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

ITAAC Finding Review In accordance with plant procedures for IT/\AC 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 IT/\AC completion review is documented in the ITAAC Completion Package for ITAAC 3.3.00.10.1 (Reference 3) and is available for NRC review.

U.S. Nuclear Regulatory Commission ND-21-0992 Enclosure Page 3 of 3 ITAAC Completion Statement Based on the above information, SNC hereby notifies the NRG that ITAAC 3.3.00.10.1 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 favailable for NRG inspection)

1. 3-PCS-ITPP-502, Rev. 2.0,"Passive Containment Cooling System PCCWST Preoperational Test Procedure"
2. 3-PCS-ITR-800815, Rev. 0,"Unit 3 Test Results for PCCWST Leakage into the Leak Chase Collection System: ITAAC 3.3.00.10.1"
3. 3.3.00.10.i-U3-CP-Rev0,"ITAAC Completion Package"
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