ND-20-0579, ITAAC Closure Notification on Completion of ITAAC 2.3.02.O8a.iii (Index Number 303)

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ITAAC Closure Notification on Completion of ITAAC 2.3.02.O8a.iii (Index Number 303)
ML21020A130
Person / Time
Site: Vogtle Southern Nuclear icon.png
Issue date: 01/20/2021
From: Yox M
Southern Nuclear Operating Co
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
ND-20-0579
Download: ML21020A130 (6)
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Text

A Southern Nuclear Regulatory Affairs Director Vogtle 3 & 4 Waynesboro, GA 30830 706-848-6459 tel JAN 2 0 2021 Docket No.: 52-025 ND-20-0579 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 2.3.02.OSa.iii [Index Number 3031 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 2.3.02.08a.iii [Index Number 303], for verifying the total Chemical and Volume Control System (CVS) makeup flow to the Reactor Coolant System (RCS) is less than or equal to 175 gallons per minute (gpm). 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. Vox' d Regulatory Affairs Direeftor Vogtle 3 & 4

Enclosure:

Vogtle Electric Generating Plant(VEGP) Unit 3 Completion of ITAAC 2.3.02.08a.iii [Index Number 303]

MJY/SEP/sfr

U.S. Nuclear Regulatory Commission ND-20-0579 Page 2 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. G. Chick Mr. S. Stimac Mr. P. Martino Mr. M. J. Yox Mr. A. S. Parton Ms. K. A. Roberts Mr. T. G. Petrak Mr. C. T. Defnall Mr. C. E. Morrow 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 cc:

Nuclear Requlatorv Commission Ms. M. Bailey (w/o enclosures)

M . M. King M H. K. Nieh M C. P. Patel M G. J. Khouri 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. Fanelli M S. Rose Ms. K. McCurry

U.S. Nuclear Regulatory Commission ND-20-0579 Page 3 of 3 Oqlethorpe Power Corporation Mr. R. B. Brinkman Mr. E. Rasmussen Municipal Electric Authority of Georgia Mr. J. E. Fuller Mr. 8. 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. 8. W. Kline, Bechtel Power Corporation Ms. L. Matis, Tetra Tech NUS, Inc.

Dr. W. R. Jacobs, Jr., Ph.D., GDS 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-20-0579 Enclosure Page 1 of 3 Southern Nuclear Operating Company ND-20-0579 Enclosure Vogtle Electric Generating Plant(VEGP) Unit 3 Completion of ITAAC 2.3.02.08a.iii [Index Number 303]

U.S. Nuclear Regulatory Commission ND-20-0579 Enclosure Page 2 of 3 ITAAC Statement Design Commitment 8.a) The CVS provides makeup water to the RCS.

I nsoections/Tests/Analvses iii) Testing will be performed to measure the delivery rate from the DWS to the RCS. Both CVS makeup pumps will be operating and the RCS pressure will be below 6 psig.

Acceptance Criteria iii) The total CVS makeup flow to the RCS is less than or equal to 175 gpm.

ITAAC Determination Basis The subject ITAAC verifies that with both Chemical and Volume Control System (CVS) makeup pumps CVS-MP-01A and CVS-MP-01B operating and taking suction from the Demineralized Water Transfer and Storage System (DWS), the total makeup flow to the Reactor Coolant System (RCS)is less than or equal to 175 gallon per minute (gpm) with RCS pressure below 6 pounds per square inch gage (psig).

Testing was performed by Unit 3 Preoperational Test Procedure 3-CVS-ITPP-501 (Reference 1). The test was conducted by aligning DWS to the suction of the CVS makeup pumps, both CVS makeup pumps were started, the CVS makeup Flow Control Valve(FCV) was fully opened, and flow was directed through a cavitating venturi to the RCS. When flow had stabilized, CVS delivery rate and RCS pressure data (taken from installed plant instrumentation) were recorded. Ten readings were taken at approximately ten second intervals, corrected for measurement uncertainty and verified to meet the acceptance criteria.

The Unit 3 CVS makeup pumps produced a maximum flow of 172.92 gpm with a maximum RCS pressure of 6 psig. The Unit 3 preoperational test results were documented in Reference 1 using Work Order 1056864 (Reference 3) which confirmed the total CVS makeup flow to the RCS was less than or equal to 175 gpm at no greater than 6 psig RCS pressure. These results were documented in SV3-CVS-ITR-800303(Reference 2) and provided evidence that the ITAAC Acceptance Criteria was met.

References 1 through 3 are available for NRC inspection as well as Unit 3 ITAAC Completion Package (Reference 4).

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 were no relevant ITAAC findings associated with this ITAAC. The ITAAC completion review is documented in the ITAAC Completion Package for ITAAC 2.3.02.08a.iii (Reference 4) and is available for NRC review.

U.S. Nuclear Regulatory Commission ND-20-0579 Enclosure Page 3 of 3 ITAAC Completion Statement Based on the above information, SNO hereby notifies the NRG that ITAAC 2.3.02.08a.iii 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. 3-CVS-iTPP-501, Rev. 5.0,"Chemical and Volume Control System Preoperational Test Procedure"
2. SV3-CVS-ITR-800303, Rev. 0,"Unit 3 Recorded Results of Total CVS Make Up Flow to the RCS: ITAAC 2.3.02.08a.lii"
3. Work Order 1056864,"(ITAAC) PERFORM CVS SYSTEM PRE-OP TESTING PER 3-CVS-ITPP-501"
4. 2.3.02.08a.iii-U3-CP-Rev0,"ITAAC Completion Package"
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