ND-20-0157, ITAAC Closure Notification on Completion of ITAAC 2.2.03.08c.i.01 (Index Number 177)

ITAAC Closure Notification on Completion of ITAAC 2.2.03.08c.i.01 (Index Number 177)

ML20150A466
Person / Time
Site:	Vogtle
Issue date:	05/29/2020
From:	Yox M Southern Nuclear Operating Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
ND-20-0157
Download: ML20150A466 (6)

Text

Michael J. Yox 7825 River Road

^Southern Nuclear Regulatory Affairs Director Vogtle 3 & 4 Waynesboro, GA 30830 706-848-6459 tel Docket Nos.: 52-025 MAY 2 9 2020 ND-20-0157 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 2.2.03.08c.i.01 [Index Number 1771 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 2.2.03.08c.i.01

[Index Number 177], for verifying the Core Makeup Tank injection line flow resistance values.

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 Tom Petrak at 706-848-1575.

Respectfully submitted.

Michael J. Yox Regulatory Affairs Director Vogtle 3 & 4

Enclosure:

Vogtle Electric Generating Plant(VEGP) Unit 3 ITAAC Closure Notification on Completion of ITAAC 2.2.03.08c.1.01 [Index Number 177]

MJY/DLW/sfr

U.S. Nuclear Regulatory Commission ND-20-0157 Page 3 of 3 To:

Southern Nuclear Operating Company/ Georgia Power Company Mr. Peter P. Sena III (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. G. Chick Mr. M. Page Mr. P. Martino Mr. M. J. Vox Mr. A. S. Parton Ms. K. A. Roberts Mr. T. G. Petrak Mr. C. T. Defnall Mr. C. E. Morrow 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 cc:

Nuclear Regulatory Commission Mr. W. Jones(w/o enclosures)

Mr. C. P. Patel Mr. G. J. Khouri Ms. S. E. Temple Mr. N. D. Karlovich Mr. A. Lerch Mr. C. J. Even Mr. B. J. Kemker Ms. N. C. Coovert Mr. C. Welch Mr. J. Gaslevic Mr. V. Hall Mr. G. Armstrong Mr. M. Webb Mr. T. Fredette Mr. S. Smith Mr. C. Santos Mrs. M. Bailey Mr. S. Rose Mr. B. Davis Mr. J. Vasquez Mr. J. Eargle Ms. K. Carrington Mr. P. Heher Mr. M. King

U.S. Nuclear Regulatory Commission ND-20-0157 Page 3 of 3 Mr. E. Davidson Oqlethorpe Power Corporation Mr. R. B. Brinkman Mr. E. Rasmussen Municipal Electric Authority of Georgia Mr. J. E. Fuller Mr. S. M. Jackson Daiton Utilities Mr. T. Bundros Westinqhouse Electric Company. LLC Dr. L. Oriani (w/o enclosures)

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

Mr. M. M. CorlettI Mr. Z. 8. Harper Mr. J. L. Coward Other Mr. J. E. Hesler, Bechtel Power Corporation Ms. L. Matis, Tetra Tech NUS, Inc.

Dr. W. R. Jacobs, Jr., Ph.D., GDS Associates, inc.

Mr. 8. Roetger, Georgia Pubiic Service Commission Ms. 8. W. Kernizan, Georgia Pubiic Service Commission Mr. K. C. Greene, Troutman Sanders Mr. 8. Blanton, Baich Bingham

U.S. Nuclear Regulatory Commission ND-20-0157 Enclosure Page 1 of 3 Southern Nuclear Operating Company ND-20-0157 Enclosure Vogtle Electric Generating Plant(VEGP) Unit 3 ITAAC Closure Notification on Completion of ITAAC 2.2.03.08c.i.01 [Index Number 177]

U.S. Nuclear Regulatory Commission ND-20-0157 Enclosure Page 2 of 3 ITAAC Statement Desion Commitment 8.c) The PXS provides RCS makeup, boration, and safety injection during design basis events.

I nspections/Tests/Analvses i) A low-pressure injection test and analysis for each CMT, each accumulator, each IRWST injection line, and each containment recirculation line will be conducted. Each test is initiated by opening isolation valve(s) in the line being tested. Test fixtures may be used to simulate squib valves.

I.CMTs:

Each CMT will be initially filled with water. All valves in these lines will be open during the test.

Acceptance Criteria i) The injection line flow resistance from each source is as follows:

1. CMTs:

The calculated flow resistance between each CMT and the reactor vessel is s 1.81 x 10 ft/gpm^ and ^ 2.25 x 10 ft/gpml ITAAC Determination Basis Multiple ITAAC were performed to verify that the Passive Core Cooling System (PXS) provided Reactor Coolant System (RCS) makeup, boration, and safety injection during design basis events. This ITAAC performed a low pressure injection test and analysis for each Core Makeup Tank(CMT)(PXS-MT-02A/B) by calculating the flow resistance of each injection line.

Performance tests were conducted in accordance with the Unit 3 preoperational test procedure 3-PXS-ITPP-506-V3.0-01 (References 1 and 2)to demonstrate that the flow path from each Unit 3 CMT to the reactor vessel had a flow resistance s 1.81 x 10 ft/gpm^ and ^ 2.25 x 10 ft/gpm^.

Each CMT was initially filled with water while measuring the volume of water added and tank level to establish a volume verses level correlation. The test was accomplished by opening both associated CMT discharge isolation valves and gravity draining each tank through the Direct Vessel Injection (DVI)flow path with all valves in these lines open, while measuring the CMT level during the test period. The constant value for flow resistance was calculated based on the test duration, total head loss and total volume change from the change in measured tank level and adjusted for measurement uncertainty.

U.S. Nuclear Regulatory Commission ND-20-0157 Enclosure Page 3 of 3 The Unit 3flow resistance was calculated to be 2.03 x 10"^ ft/gpm^ for the GMT A, PXS-MT-02A, flow path and 2.08 x fO ft/gpm^ for the GMT B, PXS-MT-02B,flow path (References 4 and 5).

The Unit 3 test results were documented in Reference 3 and confirm that the calculated Injection line flow resistance between each GMT and the reactor vessel was > 1.81 x 10 ft/gpm^ and < 2.25 x 10 ft/gpm^.

References 1 through 5 are available for NRG Inspection as well as the Unit 3 ITAAG 2.2.03.08c.i.01 Completion Package (Reference 6).

List of ITAAC Findings In accordance with plant procedures for ITAAG completion, Southern Nuclear Operating Company(SNG) performed a review of all findings pertaining to the subject ITAAG and associated corrective actions. This review found there were no relevant ITAAG findings associated with this ITAAG.

iTAAC Compietion Statement Based on the above information, SNG hereby notifies the NRG that ITAAG 2.2.03.08c.i.01 was performed for VEGP Unit 3 and that the prescribed acceptance criteria were met.

Systems, structures, and components verified as part of this ITAAG are being maintained in their as-designed, ITAAG compliant condition in accordance with approved plant programs and procedures.

References(available for NRC inspection)

1. 3-PXS-ITPP-506-V3.0-01 Rev. 3.0,"TPG for PXS GMT Mapping and Line Resistance Tesf

2. Work Order 1071721,"(ITAAG) Perform Preop Test 3-PXS-ITPP-506"

3. SV3-PXS-ITR-800177 Rev. 0, ITAAG Technical Report,"Unit 3 Recorded Results of PXS Gore Makeup Tank Injection Line Flow Resistance: ITAAG 2.2.03.08c.i.01"

4. SV3-PXS-T1R-005 Rev. 0,"Vogtle Unit 3 3-PXS-ITPP-506 Section 4.2.2 and 4.4.2 Gore Makeup Tank to DVI Nozzle Flow Resistance Test Engineering Report"

5. SV3-PXS-T2G-005 Rev. 0,"Vogtle Unit 3 3-PXS-ITPP-506 Section 4.2.2 and 4.4.2 Gore Makeup Tank to DVI Nozzle Flow Resistance Test Galculation"

6. ITAAG 2.2.03.08c.i.01-U3-GP-Rev0 Gompletion Package

7. NEI 08-01,"Industry Guideline for the ITAAG Glosure Process Under 10 GFR Part 52"