ND-18-0696, Unit 4 - ITAAC Closure Notification on Completion of ITAAC2.2.05.07a.ii (Index Number 266)

Unit 4 - ITAAC Closure Notification on Completion of ITAAC2.2.05.07a.ii (Index Number 266)

ML18257A055
Person / Time
Site:	Vogtle
Issue date:	09/13/2018
From:	Yox M Southern Nuclear Operating Co
To:	Document Control Desk, Office of New Reactors
References
ITAAC 2.2.05.07a.ii, ND-18-0696
Download: ML18257A055 (6)

Text

KI I Michael J. Yox 7825 River Road 5OUtn0rn NUCi03r Regulatory Affairs Director Waynesboro, GA 30830 Vogtle 3 &4 706-848-6459 tei 410-474-8587 cell myox@southernco.com SEP 1 3 201B Docket No.: 52-025 52-026 ND-18-0696 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 and Unit 4 ITAAC Closure Notification on Completion of ITAAC 2.2.05.07a.ii flndex Number 2661 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 and Unit 4 Inspections, Tests, Analyses, and Acceptance Criteria (ITAAC) Item 2.2.05.07a.ii [Index Number 266] for verifying the Main Control Room Emergency Habitability System Air Storage Volume. 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 Tom Petrak at 706-848-1575.

Respectfully submitted, Jl:m£)indlQ^h 5or 3- ^C))c Michael J. Yox Regulatory Affairs Director Vogtle 3 &4

Enclosure:

Vogtle Electric Generating Plant (VEGP) Unit 3 and Unit 4 Completion of ITAAC 2.2.05.07a.ii [Index Number 266]

MJY/GCW/amw

U.S. Nuclear Regulatory Commission ND-18-0696 Page 2 of 3 To:

Southern Nuclear Operating Company/ Georgia Power Company Mr. D. A. Bost (w/o enclosures)

Mr. D. L. McKinney (w/o enclosures)

Mr. M. D. Meier (w/o enclosures)

Mr. D. H. Jones (w/o enclosures)

Mr. J. B. Klecha Mr. G. Chick Mr. M. J. Vox Mr. A. 8. Parton Ms. A. L. Pugh Mr. T. G. Petrak Mr. W. A. Sparkman Mr. C. T. Defnall Mr. C. E. Morrow Mr. J. L. Hughes Ms. K. M. Stacy Ms. A. C. Chamberlain Mr. C. T. Defnall Mr. J. C. Haswell Document Services RTYPE; VND.LI.L06 File AR.01.02.06 cc; Nuclear Reoutatorv Commission Mr. W. Jones (w/o enclosures)

Mr. F. D. Brown Ms. J. M. Heisserer Ms. A. E. Rivera-Varona Mr. M. E. Ernstes Mr. C. P. Patel Mr. G. J. Khouri Ms. S. E. Temple Mr. N. D. Karlovich Mr. A. J. Lerch Mr. C. J. Even Mr. B. J. Kemker Ms. N. C. Coovert Oolethoroe Power Corporation Mr. R. B. Brinkman Mr. E. Rasmussen Munlcipai Eiectric Authority of Georgia Mr. J. E. Fuller Mr. S. M. Jackson Daiton Utilities Mr. T. Bundros

U.S. Nuclear Regulatory Commission ND-18-0696 Page 3 of 3 Westinahouse Electric Company. LLC Dr. L. Orlani (w/o enclosures)

Mr. D. 0. Durham (w/o enclosures)

Mr. M. M. Corletti Ms. L. G. Iller Ms. J. Monahan Mr. J. L. Coward Other Mr. J. E. Hosier, 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 Ms. 8. W. Kernlzan, Georgia Public Service Commission Mr. K. C. Greene, Troutman Sanders Mr. 8. Blanton, Baich Bingham

U.S. Nuclear Regulatory Commission ND-18-0696 Enclosure Page 1 of 3 Southern Nuclear Operating Company ND-18-0696 Enclosure Vogtle Electric Generating Plant (VEGP) Unit 3 and Unit 4 Completion of ITAAC 2.2.05.07a.ii [Index Number 266]

U.S. Nuclear Regulatory Commission ND-18-0696 Enclosure Page 2 of 3 ITAAC Statement Design Commitment 7.a) The VES provides a 72-hour supply of breathable quality air for the occupants of the MCR.

Inspections/Tests/Analvses ii) Analysis of storage capacity will be performed based on manufacturers data.

Acceptance Criteria ii) The calculated storage capacity is greater than or equal to 327,574 scf.

ITAAC Determination Basis Multiple ITAAC are performed to demonstrate that the Main Control Room Emergency Habitability System (VES) provides a 72-hour supply of breathable quality air for the occupants of the Main Control Room (MCR). This ITAAC requires an analysis be performed using manufacturers data to demonstrate that the capacity of the VES emergency air storage tanks is greater than or equal to 327,574 standard cubic feet (scf).

After fabrication, the free volume of the 32 emergency air storage tanks for each Unit 3 and Unit 4 were measured by the manufacturer. To calculate the free volume of each tank, the manufacturer determined the weight of each air storage tank when empty and when filled with water using a scale. The weight of the empty air storage tank was subtracted from the weight of the water-filled air storage tank to determine the weight of the water within the contained volume of each air storage tank. The water weight was converted to volume using the density of water, compensated for temperature at the time of measurement. The total free volume in cubicfeet for each Units' 32 tanks is the summation of the individual tanks' free volume. The total storage capacity in scf of air is calculated by converting the total free volume of compressed air at the bounding temperature and pressure conditions to an expanded volume in scf at standard pressure and temperature conditions.

The results of the analysis are documented in the Vogtle Units 3 &4 Air Tanks Volume Calculations (Reference 1). The results verify the total calculated storage capacity of the VES emergency air storage tanks is 328,086 scf for Unit 3 and 327,997 scf for Unit 4 which meet the ITAAC acceptance criteria.

Reference 1 is available for NRC inspection as part of the Unit 3 and Unit 4 ITAAC 2.2.05.07a.ii Completion Packages (References 3 and 4, respectively).

U.S. Nuclear Regulatory Commission ND-18-0696 Enclosure Page 3 of 3 ITAAC Finding Review In accordance with plant procedures for ITAAC completion, Southern Nuclear Operating Company (SNC) performed a review of all ITAAC findings pertaining to the subject ITAAC and associated corrective actions. This review found that there are no relevant ITAAC findings associated with these ITAAC. The ITAAC completion review is documented in the ITAAC Completion Packages for ITAAC 2.2.05.07a.ii for Unit 3 and Unit 4 (References 2 and 3 respectively) and are available for NRC review.

ITAAC Completion Statement Based on the above information, SNC hereby notifies the NRC that ITAAC 2.2.05.07a.ii was performed for VEGP Unit 3 and 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. SV0-MS23-VDR-001, Revision 0 "Vogtle Units 3 &4 Air Tanks Volume Calculations"

2. 2.2.05.07a.ii-U3-CP-Rev 0, "Completion Package for the Unit 3 ITAAC 2.2.05.07a.ii [Index number 266]"

3. 2.2.05.07a.ii-U4-CP-Rev 0, "Completion Package for the Unit4 ITAAC 2.2.05.07a.ii [Index number 266]"