ND-20-1335, ITAAC Closure Notification on Completion of ITAAC 3.3.00.13 (Index Number 819)

ITAAC Closure Notification on Completion of ITAAC 3.3.00.13 (Index Number 819)

ML20328A285
Person / Time
Site:	Vogtle
Issue date:	11/20/2020
From:	Yox M Southern Nuclear Operating Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
ND-20-1335
Download: ML20328A285 (6)

Text

^Southern Nuclear Michael J. Yox Regulatory Affairs Director 7825 River Road Waynesboro, GA 30830 Vogtle 3 & 4 706-848-6459 tei NOV 2 0 2020 Docket Nos.: 52-025 ND-20-1335 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 3.3.00.13 [Index Number 8191 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 3.3.00.13[Index Number 819]. This ITAAC verifies that the minimum horizontal clearance above floor elevation lOO'-O" between the structural elements of the annex building and the nuclear island is 3 inches, except that the minimum north-south horizontal clearance between elevations 141'-0" and 154'-

0" between structural elements of the annex building and the nuclear island west of column line I is 2-1/16 inches. The minimum horizontal clearance above floor elevation lOO'-O" between the structural elements of the turbine building and the nuclear island is 3 inches. 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.

Michael J. Yox Regulatory Affairs Directoi/Vogtle 3 & 4

Enclosure:

Vogtle Electric Generating Plant(VEGP) Unit 3 Completion of ITAAC 3.3.00.13 [Index Number 819]

MJY/JFV/sfr

U.S. Nuclear Regulatory Commission ND-20-1335 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 Reoulatorv 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 s. M. Bailey 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-20-1335 Page 3 of 3 Qqlethorpe Power Corporation Mr. R. B. Brinkman Mr. E. Rasmussen Municipal Electric Authority of Georgia Mr. J. E. Fuller Mr. S. M. Jackson Dalton Utilities Mr. T. Bundros Westinohouse 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, Balch Bingham

U.S. Nuclear Regulatory Commission ND-20-1335 Enclosure Page 1 of 3 Southern Nuclear Operating Company ND-20-1335 Enclosure Vogtle Electric Generating Plant(VEGP) Unit 3 Completion of ITAAC 3.3.00.13[Index Number 819]

U.S. Nuclear Regulatory Commission ND-20-1335 Enclosure Page 2 of 3 ITAAC Statement Design Commitment

13. Separation Is provided between the structural elements of the turbine and annex buildings and the nuclear island structure. This separation permits horizontal motion of the buildings in the safe shutdown earthquake without impact between structural elements of the buildings.

I nsoections/Tests/Analvses An inspection of the separation of the nuclear island from the annex and turbine building structures will be performed. The inspection will verify the specified horizontal clearance between structural elements of the adjacent buildings, consisting of the reinforced concrete walls and slabs, structural steel columns and floor beams.

Acceptance Criteria The minimum horizontal clearance above floor elevation lOO'-O" between the structural elements of the annex building and the nuclear island is 3 inches; except that the minimum north-south horizontal clearance between elevations 14T-0" and 154'-0" between structural elements of the annex building and the nuclear island west of column line I is 2-1/16 inches. The minimum horizontal clearance above floor elevation 10O'-O" between the structural elements of the turbine building and the nuclear island is 3 inches.

ITAAC Determination Basis An inspection was performed to demonstrate separation of the nuclear island from the annex and turbine building structures. This separation permits horizontal motion of the buildings in the safe shutdown earthquake without impact between structural elements of the buildings. The inspections verified the specified horizontal clearances between structural elements of the nuclear island and adjacent annex and turbine buildings. The structural elements consist of reinforced concrete walls and slabs, structural steel columns and floor beams. The subject ITAAC requires that the minimum horizontal clearance above floor elevation 10O'-O" between the structural elements of the annex or turbine building and the nuclear island is 3 inches, except that the minimum north-south horizontal clearance between elevations 14T-0" and 154'-0" between structural elements of the annex building and the nuclear island west of column line I is 2-1/16 inches.

The inspections were performed on the as-built structures in accordance with the requirements of measurement guideline APP-GW-IT-001 (Reference 1), which identifies the location and frequency of inspection points for determining separation distance, to ensure the resulting measurements are representative of the entire section being inspected. The measurements were based on the size and construction type of each section. Measurements were taken using survey equipment in accordance with site survey procedures (Reference 2).

The inspection results are contained in the Unit 3 Principal Closure Documents

U.S. Nuclear Regulatory Commission ND-20-1335 Enclosure Page 3 of 3 (References 3 - 9)and verified that the minimum horizontal clearance above floor elevation 10O'-O" between the structural elements of the annex buildings and the nuclear island is 3 inches, except that the minimum north-south horizontal clearance between elevations 141'-0" and 154'-0" between structural elements of the annex building and the nuclear Island west of column line I is 2-1/16 inches and that the minimum horizontal clearance above floor elevation 100'- 0" between the structural elements of the turbine building and the nuclear island is 3 inches.

References 3 through 9 are available for NRG inspection as part of the Unit 3 ITAAC 3.3.00.13 Completion Package (References 10).

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 are no relevant IT/\AC findings associated with this IT/\AC. The ITAAC completion review is documented in the ITAAC Completion Package for ITAAC 3.3.00.13(Reference 10) and is available for NRC review.

ITAAC Completion Statement Based on the above information, SNC hereby notifies the NRC that ITAAC 3.3.00.13 was performed for VEGP Unit 3 and that the prescribed acceptance criteria are 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 favallable for NRC inspection)

1. APP-GW-IT-001, Revision 1, "Guidelines for Concrete Wall and Slab Thickness Measurements".

2. 26139-000-4MP-T81C-N3201, Revision 5, "Construction Survey".

3. SV3-1200-ITR-819000, Rev.1,"Unit 3 Seismic Gap Verification Wall 70 & 117 Along Column Line 11 from Just West of I to L, Elevation lOO'-O" to 135'-3".

4. SV3-1200-ITR-801819, Rev. 1,"Unit 3Seismic Gap Verification Wall 140 Along Column Line 11 From Just West of I to L, Elevation 135'-3"to 155'-6".

5. SV3-1260-ITR-801819, Rev. 0,"Unit 3 Seismic Gap Verification Auxiliary Building Roof ITAAC# 3.3.00.13(NRC# 819)".

6. SV3-2000-ITR-800819, Rev. 0,"Unit 3 Seismic Gap Verification Auxiliary & Turbine Building ITAAC# 3.3.00.13(NRC# 819)".

7. SV3-4030-ITR-800819, Rev. 0,"Unit 3 Seismic Gap Verification Auxiliary & Annex Building, EL lOO'-O" and 107'-2" ITAAC# 3.3.00.13(NRC# 819)".

8. SV3-4040-ITR-800819, Rev. 0, "Unit 3 Seismic Gap Verification Auxiliary & Annex Building, EL 117'-6" ITAAC# 3.3.00.13(NRC# 819)".

9. SV3-4050-ITR-800819, Rev. 0, "Unit 3 Seismic Gap Verification Auxiliary & Annex Building, EL 135'-3" ITAAC# 3.3.00.13(NRC# 819)".

10. 3.3.00.13-U3-CP-RevO, ITAAC Completion Package.

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