ND-20-0758, ITAAC Closure Notification on Completion of ITAAC 2.5.01.03e (Index Number 515)

ITAAC Closure Notification on Completion of ITAAC 2.5.01.03e (Index Number 515)

ML21291A260
Person / Time
Site:	Vogtle
Issue date:	10/18/2021
From:	Yox M Southern Nuclear Operating Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
ND-20-0758
Download: ML21291A260 (7)

Text

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

OCT 1 8 2021

Docket No.: 52-025 ND-20-0758 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 2.5.01.03e [Index Number 5151

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 2.5.01.03e [Index Number 515]. This ITAAC verifies that the Diverse Actuation System (DAS) sensors identified in Combined License Appendix C Table 2.5.1-3 are used for DAS input and are separate from those being used by the Protection and Safety Monitoring System (PMS) and Plant Control System (PLS). The closure process for this ITAAC was 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 Kelli 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 2.5.01.03e [Index Number 515]

MJY/TJC/sfr U.S. Nuclear Regulatory Commission ND-20-0758 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. Beiike 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 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. E. Davidson Mr. T. Fanelli Ms. K. McCurry Mr. J. Parent Mr. B. Griman Mr. V. Hall U.S. Nuclear Regulatory Commission ND-20-0758 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 Utilities Mr. T. Bundros

Westinqhouse Electric Company. LLC Dr. L. Oriani 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-20-0758 Enclosure Page 1 of 4

Southern Nuclear Operating Company ND-20-0758 Enclosure

Vogtle Electric Generating Plant (VEGP) Unit 3 Completion of ITAAC 2.5.01.03e [Index Number 515]

U.S. Nuclear Regulatory Commission ND-20-0758 Enclosure Page 2 of 4

ITAAC Statement

Design Commitment

3.e) The sensors identified on Table 2.5.1-3 are used for DAS input and are separate from those being used by the RMS and plant control system.

Inspections. Tests. Analyses

Inspection of the as-built system will be performed except for the core exit temperature sensor installation.

Acceptance Criteria

The sensors identified on Table 2.5.1-3 are used by DAS and are separate from those being used by the RMS and plant control system.

ITAAC Determination Basis

Inspection of the as-built Diverse Actuation System (DAS) was performed to demonstrate that the sensors identified in Combined License (COL) Appendix C Table 2.5.1-3 (Attachment A),

except for the core exit temperature sensor installation, are used for Diverse Actuation System (DAS) input and are separate from those being used by the Protection and Safety Monitoring System (RMS) and Plant Control System (RLS).

The DAS System Specification Document (Reference 1) requires that the sensors identified in Attachment A be used for DAS input and are separate and independent from the sensor inputs in the RMS and plant control system. Construction drawing SV3-DAS-J0-001, (Reference 2),

illustrates the DAS sensor flow and indication architecture. An inspection of Quality Release and Certificate of Conformance documentation, construction drawings, and completed construction records was performed in accordance with SV3-DAS-ITR-800515 (Reference 3), to confirm that the sensors identified in Attachment A were installed per the DAS sensor input requirements of Reference 1 and are separate from those being used by the RMS and plant control system.

The inspection results are documented in Reference 3 and confirm that the sensors identified in Attachment A are used by DAS and are separate from those being used by the RMS and plant control system.

References 1 through 3 are available for NRC inspection as part of the Unit 3 ITAAC 2.5.01.03e Completion Package (Reference 5).

ITAAC Finding Review In accordance with plant procedures for ITAAC completion. Southern Nuclear Operating Company performed a review of all ITAAC findings pertaining to the subject ITAAC and associated corrective actions. This review found there are no relevant findings associated with the ITAAC. The ITAAC completion review is documented in the ITAAC Completion Package 2.5.01.03e (Reference 5) and is available for NRC review.

U.S. Nuclear Regulatory Commission ND-20-0758 Enclosure Page 3 of 4

ITAAC Completion Statement Based on the above information, SNC hereby notifies the NRG that ITAAC 2.5.01.03e 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. SV3-DAS-J4-001, "API 000 Diverse Actuation System System Design Specification",

Revision 3

2. SV3-DAS-J0-001, "Diverse Actuation System (DAS) Sensor Flow and Indication Architecture",

Revision 1

3. SV3-DAS-ITR-800515, "Unit 3 Inspection Results of Diverse Actuation System (DAS)

Sensor Hardware Diversity; ITAAC 2.5.01.03e NRC Index Number: 515", Revision 1

4. NEI 08-01, "Industry Guideline for the ITAAC Closure Process Under 10 CFR Part 52",

Revision 5 - Corrected

5. 2.5.01.03e-U3-CP-Rev0, "ITAAC Completion Package" U.S. Nuclear Regulatory Commission ND-20-0758 Enclosure Page 4 of 4

Attachment A

'Excerpt from COL Table 2.5.1-3

• Equipment Name *Tag Number Reactor Coolant System (RCS) Hot Leg Temperature RCS-300A RCS Hot Leg Temperature RCS-300B Steam Generator 1 Wide-range Level SGS-044 Steam Generator 1 Wide-range Level SGS-045 Steam Generator 2 Wide-range Level SGS-046 Steam Generator 2 Wide-range Level SGS-047 Pressurizer Water Level RCS-305A Pressurizer Water Level RCS-305B Containment Temperature VCS-053A Containment Temperature VCS-053B Core Exit Temperature IIS-009 Core Exit Temperature IIS-013 Core Exit Temperature IIS-030 Core Exit Temperature IIS-034 Rod Control Motor Generator Voltage PLS-001 Rod Control Motor Generator Voltage PLS-002