ML22244A056
| ML22244A056 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 09/01/2022 |
| From: | James Gaslevic NRC/NRR/VPOB |
| To: | |
| Gaslevic J | |
| References | |
| Download: ML22244A056 (5) | |
Text
CONSTRUCTION REACTOR OVERSIGHT PROCESS RESOURCES
The U.S. Nuclear Regulatory Commission (NRC) staff originally e stimated 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 September 1, 2022, revised estimates are approx imately 43,300 hours0.00347 days <br />0.0833 hours <br />4.960317e-4 weeks <br />1.1415e-4 months <br /> for Vogtle Unit 3 and 28,300 hours0.00347 days <br />0.0833 hours <br />4.960317e-4 weeks <br />1.1415e-4 months <br /> for Vogtle Unit 4. These revised estim ates include:
- 19,063 hours7.291667e-4 days <br />0.0175 hours <br />1.041667e-4 weeks <br />2.39715e-5 months <br /> for inspections related to ITAAC for Vogtle Unit 3 (at 100% completion),
and 10,700 hours0.0081 days <br />0.194 hours <br />0.00116 weeks <br />2.6635e-4 months <br /> for Vogtle Unit 4;
- 14,200 hours0.00231 days <br />0.0556 hours <br />3.306878e-4 weeks <br />7.61e-5 months <br /> for construction and operational program inspecti ons for Vogtle Unit 3, and 7,600 hours0.00694 days <br />0.167 hours <br />9.920635e-4 weeks <br />2.283e-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 progra m in response to licensee performance issues, allegations, and nonperformance issues or e vents;
- and 5,000 hours0 days <br />0 hours <br />0 weeks <br />0 months <br /> for technical support of construction inspecti ons.
Table 1 and figure 1 show the total number of direct inspection hours expended through September 1, 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, 19,063 / 100% 12,222 701 2,242 34,228 Unit 3 Vogtle, 8,352 / 78% 6,583 463 1,439 16,837 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.
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0 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 Vogtle, Unit 3, Cumulative Data Vogtle, Unit 4, Cumulative Data
Figure 1 Total cumulative direct inspection hours for Vogtle, U nit 3 and 4
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0 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 Vogtle, Unit 3, ITAAC direct inspections 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 in spections related to ITAAC since the start of construction at Vogtle Units 3 and 4. The st aff estimates that there are approximately 19,063 hours7.291667e-4 days <br />0.0175 hours <br />1.041667e-4 weeks <br />2.39715e-5 months <br /> of direct inspection related to ITAA C for Unit 3 (at 100%
completion) and estimates there will be approximately 10,700 ho urs of direct inspection related to ITAAC for Unit 4.
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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 f or programmatic inspection since the start of construction at Vogtle, Units 3 and 4. Base d on Vogtles schedule, total cumulative program inspections are estimated at 14,200 hours0.00231 days <br />0.0556 hours <br />3.306878e-4 weeks <br />7.61e-5 months <br /> fo r Vogtle Unit 3, and 7,600 hours0.00694 days <br />0.167 hours <br />9.920635e-4 weeks <br />2.283e-4 months <br /> for Unit 4.
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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 Vo gtle, Units 3 and 4
Figure 4 summarizes the direct inspection hours expended for re active and allegation inspections and hours spent providing technical support for ins pections since the start of construction at Vogtle, Units 3 and 4. The staff has not identi fied 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 prog ram in response to licensee performance issues, allegations, and nonperformance issues or e vents, or the 5,000 hours0 days <br />0 hours <br />0 weeks <br />0 months <br /> estimated for technical support for construction inspections.