ND-22-0134, ITAAC Closure Notification on Completion of ITAAC 2.6.02.02b (Index Number 594)

ITAAC Closure Notification on Completion of ITAAC 2.6.02.02b (Index Number 594)

ML22056A523
Person / Time
Site:	Vogtle
Issue date:	02/25/2022
From:	Yox M Southern Nuclear Operating Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
ND-22-0134
Download: ML22056A523 (7)

Text

Michael J. Yox 7825 River Road A Southern Nuclear Regulatory Affairs DirectorWaynesboro, GA 30830 Vogtle 3 & 4 706-848-6459 tel FEB 2 5 2022

Docket No.: 52-025 ND-22-0134 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 ITAAC 2.6.02.02b (index Number 5941

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 2.6.02.02b

[Index Number 594]. This ITAAC confirms that EDS load group 1, 2, 3, and 4 batteries can supply the corresponding DC switchboard load for a period of 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> without recharging. The closure process for this ITAAC is based on 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,

Michael J. Yox Regulatory Affairs Director Vogtle 3 & 4

Enclosure:

Vogtle Electric Generating Plant (VEGP) Unit 3 Completion of ITAAC 2.6.02.02b [Index Number 594]

MJY/DCH/sfr U.S. Nuclear Regulatory Commission ND-22-0134 Enclosure 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. 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 Requlatorv 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-22-0134 Enclosure 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 Utiiities Mr. T. Bundros

Westinqhouse Eiectric 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 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-22-0134 Enclosure Page 1 of 4

Southern Nuclear Operating Company ND-22-0134

Enclosure

Vogtie Electric Generating Plant (VEGP) Unit 3 Completion of ITAAC 2.6.02.02b [Index Number 594]

U.S. Nuclear Regulatory Commission ND-22-0134 Enclosure Page 2 of 4

ITAAC Statement

Design Commitment:

2.b) Each EDS load group 1,2, 3, and 4 battery supplies the corresponding do switchboard bus load for a period of 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> without recharging.

Inspections. Tests. Analyses:

Testing of each as-built battery will be performed by applying a simulated or real load, or a combination of simulated or real loads. The test will be conducted on a battery that has been fully charged and has been connected to a battery charger maintained at 135 +/-1 V for a period of no less than 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> prior to the test.

Acceptance Criteria:

The battery terminal voltage is greater than or equal to 105 V after a period of no less than 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />, with an equivalent load greater than 850 amps.

ITAAC Determination Basis Testing was performed in accordance with Unit 3 component test work orders documented in Reference 1 to verify that each Non-Class 1E direct current (dc) and Uninterruptible Power Supply System (EDS) load group 1, 2, 3, and 4 battery supplies the corresponding dc switchboard bus load for a period of 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> without recharging.

A battery service test, as defined in Institute of Electrical and Electronics Engineers (IEEE)

Standard 450-1995, was performed using a load bank to apply a load on the battery that results in a discharge current greater than 850 amps. The component test is performed on each fully charged as-built EDS battery that has been connected to a charger maintained at 135 +/-1 V for a period of no less than 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> prior to the test. The EDS battery is disconnected from the battery charger and a load bank is then connected to the output of the battery, adjusted to a discharge current greater than 850 amps. Discharge current and battery terminal voltage at the start of the test and upon completion of the 2-hour test from the component test package work orders are included in Reference 1. The EDS battery discharge current and terminal voltage measurements are summarized in Attachment A and demonstrate that each EDS battery meets the acceptance criteria.

The Unit 3 component test results confirm the battery terminal voltage is greater than or equal to 105 V after a period of no less than 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> with an equivalent load greater than 850 amps.

Reference 1 is available for NRC inspection as part of the Unit 3 ITAAC 2.6.02.02b 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 ITAAC findings pertaining to the subject ITAAC and associated corrective actions. This review found there were no relevant findings associated with this ITAAC. The review is documented in the ITAAC Completion Package (Reference 2) and is available for NRC review.

U.S. Nuclear Regulatory Commission ND-22-0134 Enclosure Page 3 of 4

ITAAC Completion Statement Based on the above information, SNC hereby notifies the NRG that ITAAC 2.6.02.02b 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 inspection)

1. SV3-EDS-ITR-800594, Rev. 0, "ITAAC Technical Report, Unit 3 Test Results of Non Class 1E DC and UPS System: ITAAC 2.6.02.02b [NRC Index Number 594]"

2. 2.6.02.02b-U3-CP-Rev0, ITAAC Completion Package U.S. Nuclear Regulatory Commission ND-22-0134 Enclosure Page 4 of 4

Attachment A

System: Non-Class 1E dc and Uninterruptible Power Supply System Test Discharge Pre-test Test Discharge Current, Voltage Component Pre-test Voltage & Current, Voltage & Time at End Unit Name* Tag No.* Date Time & Time at Start (>2 Hours)

3 Load Group 1 890 Amo/ 126.4 V 890 Amo/ 111.6 V Battery EDS1-DB-1 1/7/22 135 V15:32 hrs 15:32 hrs 17:48 hrs

3 Load Group 2 870 Amo/ 127.2 V 870 Amo/ 111.5 V Battery EDS2-DB-1 1/22/22 135 V17:37 hrs 17:37 hrs 19:52 hrs

3 Load Group 3 1973 Amo/ 126.9 V V66 Amo/ 105 V Battery EDS3-DB-1 1/30/22 134.9 V10:49 hrs 10:49 hrs 16:40 hrs

3 Load Group 4 2973 Amo / 126.9 V 2766 Amo/ 105 V Battery EDS4-DB-1 2/15/22 135 V9:15 hrs 9:15 hrs 14:53 hrs

• Excerpt from CO_ Appendix C,"fable 2.6.2-2 Notes:

Modified performance tests were performed for Load Group 3 and 4 batteries in lieu of a service test, in accordance with IEEE standard 450-1995. The battery terminal voltage stayed above 105 V until the end of the load sequence for Load Group 3 and 4 batteries. See the load sequence for each test below:

1. Group 3:

Load sequence = 1 min @ 973 A, Ihr 59 min @850A, 2hr @150A, and 1 hr 50min @ 766A

2. Group 4:

Load sequence = 1 min @ 973 A, Ihr 59 min @850A, 2hr @150A, and 1 hr 37min @ 766A