ML22089A041

Construction Reactor Oversight Process Resources Report March 30 2022

ML22089A041
Person / Time
Site:	Vogtle
Issue date:	03/30/2022
From:	James Gaslevic NRC/NRR/VPOB
To:
Gaslevic J, 301-415-2776
References
Download: ML22089A041 (5)

Text

CONSTRUCTION REACTOR OVERSIGHT PROCESS RESOURCES The U.S. Nuclear Regulatory Commission (NRC) staff originally estimated that direct inspection will require 35,000 hours0 days <br />0 hours <br />0 weeks <br />0 months <br /> per unit over the course of a 5-year nuclear power plant construction project. As of March 30, 2022, revised estimates are approximately 43,000 hours0 days <br />0 hours <br />0 weeks <br />0 months <br /> for Vogtle Unit 3 and 28,500 hours0.00579 days <br />0.139 hours <br />8.267196e-4 weeks <br />1.9025e-4 months <br /> for Vogtle Unit 4. These revised estimates include:

• 19,200 hours0.00231 days <br />0.0556 hours <br />3.306878e-4 weeks <br />7.61e-5 months <br /> for inspections related to ITAAC for Vogtle Unit 3, and 11,200 hours0.00231 days <br />0.0556 hours <br />3.306878e-4 weeks <br />7.61e-5 months <br /> for Vogtle Unit 4;

• 13,800 hours0.00926 days <br />0.222 hours <br />0.00132 weeks <br />3.044e-4 months <br /> for construction and operational program inspections for Vogtle Unit 3, and 7,300 hours0.00347 days <br />0.0833 hours <br />4.960317e-4 weeks <br />1.1415e-4 months <br /> for Vogtle Unit 4;

• 5,000 hours0 days <br />0 hours <br />0 weeks <br />0 months <br /> for reactive inspections above the baseline program in response to licensee performance issues, allegations, and nonperformance issues or events;

• and 5,000 hours0 days <br />0 hours <br />0 weeks <br />0 months <br /> for technical support of construction inspections.

Table 1 and figure 1 show the total number of direct inspection hours expended through March 30, 2022, for Vogtle Units 3 and 4.

Table 1: Actual Total Construction Inspection Program Resource Expenditures Unit ITAAC Inspection Program Reactive/Allegation- Technical Total Hours/Percentage Inspections Related Inspections Support*

of Planned Inspections Vogtle, 18,219 / 95% 11,587 669 2,232 32,707 Unit 3 Vogtle, 8,287 / 74% 6,344 456 1,429 16,516 Unit 4

• To date, NRC Headquarters technical staff inspection support has not been linked to a specific docket and has not been fee billable. Therefore, it is not possible to distinguish the technical support hours expended by the Office of Nuclear Reactor Regulation on each unit. In Table 1, the total hours expended on technical support have been split between the units.

March 30, 2022 40000 35000 30000 25000 20000 15000 10000 5000 0

2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2022 Proj Hours Vogtle, Unit 3, Cumulative Data Vogtle, Unit 4, Cumulative Data Figure 1 Total cumulative direct inspection hours for Vogtle, Unit 3 and 4 25000 20000 15000 10000 5000 0

2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2022 Vogtle, Unit 3, ITAAC direct inspections Proj Hours Vogtle, Unit 4, ITAAC direct inspections Figure 2 Cumulative ITAAC-related direct inspection hours for Vogtle, Units 3 and 4 Figure 2 summarizes the direct inspection hours expended for inspections related to ITAAC since the start of construction at Vogtle Units 3 and 4. The staff estimates that there will be approximately 19,200 hours0.00231 days <br />0.0556 hours <br />3.306878e-4 weeks <br />7.61e-5 months <br /> of direct inspection related to ITAAC for Unit 3 and 11,200 hours0.00231 days <br />0.0556 hours <br />3.306878e-4 weeks <br />7.61e-5 months <br /> of direct inspection related to ITAAC for Unit 4.

25000 20000 15000 10000 5000 0

2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2022 Proj Hours Vogtle, Unit 4, Program direct inspection Vogtle, Unit 4, QA direct inspection Vogtle, Unit 3, Program direct inspection Vogtle, Unit 3, QA direct inspection Figure 3 Cumulative quality assurance and program inspection for Vogtle, Units 3 and 4 Figure 3 summarizes the NRC staff resources in hours expended for programmatic inspection since the start of construction at Vogtle, Units 3 and 4. Based on Vogtles schedule, total cumulative program inspections are estimated at 13,800 hours0.00926 days <br />0.222 hours <br />0.00132 weeks <br />3.044e-4 months <br /> for Vogtle Unit 3, and 7,300 hours0.00347 days <br />0.0833 hours <br />4.960317e-4 weeks <br />1.1415e-4 months <br /> for Unit 4.

2500 2000 1500 1000 500 0

2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 Vogtle, Unit 3, Reactive and Allegations Vogtle, Unit 3, HQ Technical Support Vogtle, Unit 4, Reactive and Allegations Vogtle, Unit 4, HQ Technical Support Figure 4 Cumulative reactive and technical support hours for Vogtle, Units 3 and 4 Figure 4 summarizes the direct inspection hours expended for reactive and allegation inspections and hours spent providing technical support for inspections since the start of construction at Vogtle, Units 3 and 4. The staff has not identified a need to revise the estimate of 5,000 hours0 days <br />0 hours <br />0 weeks <br />0 months <br /> for reactive inspections above the baseline program in response to licensee performance issues, allegations, and nonperformance issues or events, or the 5,000 hours0 days <br />0 hours <br />0 weeks <br />0 months <br /> estimated for technical support for construction inspections.