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Category:Letter type:HBL
MONTHYEARHBL-21-017, Clarification Regarding Final Status Survey Report for Humboldt Bay Power Plant2021-10-28028 October 2021
Clarification Regarding Final Status Survey Report for Humboldt Bay Power Plant
HBL-21-016, Request to Terminate the Humboldt Bay Power Plant 10 CFR Part 50 License2021-10-21021 October 2021
Request to Terminate the Humboldt Bay Power Plant 10 CFR Part 50 License
HBL-21-012, Errata for Humboldt Bay Power Plant 2020 Annual Radioactive Effluent Release Report2021-07-28028 July 2021
Errata for Humboldt Bay Power Plant 2020 Annual Radioactive Effluent Release Report
HBL-21-011, Final Status Survey Report for the Humboldt Bay Power Plant2021-07-13013 July 2021
Final Status Survey Report for the Humboldt Bay Power Plant
HBL-21-009, Supplemental Response to NRC Request for Additional Information on the License Amendment Request to Revise the License Termination Plan2021-05-20020 May 2021
Supplemental Response to NRC Request for Additional Information on the License Amendment Request to Revise the License Termination Plan
HBL-21-007, Response to NRC Request for Additional Information on the License Amendment Request to Revise the License Termination Plan2021-04-29029 April 2021
Response to NRC Request for Additional Information on the License Amendment Request to Revise the License Termination Plan
HBL-21-008, Annual Radiological Environmental Monitoring Report for 20202021-04-28028 April 2021
Annual Radiological Environmental Monitoring Report for 2020
HBL-21-006, Annual Report of Occupational Radiation Exposure for Year 20202021-04-15015 April 2021
Annual Report of Occupational Radiation Exposure for Year 2020
HBL-21-004, Annual Radioactive Effluent Release Report for 20202021-03-30030 March 2021
Annual Radioactive Effluent Release Report for 2020
HBL-21-003, Decommissioning Funding Report for Humboldt Bay Power Plant, Unit 32021-03-29029 March 2021
Decommissioning Funding Report for Humboldt Bay Power Plant, Unit 3
HBL-21-001, License Amendment Request 21-01 Revise Methodology in License Termination Plan2021-02-0808 February 2021
License Amendment Request 21-01 Revise Methodology in License Termination Plan
HBL-20-013, Final Status Survey Report for the Humboldt Bay Power Plant (Office Annex, Security Building, Intake Structure, Count Room Building, and Waste Management Facility)2020-09-24024 September 2020
Final Status Survey Report for the Humboldt Bay Power Plant (Office Annex, Security Building, Intake Structure, Count Room Building, and Waste Management Facility)
HBL-20-012, Responses to NRC Requests for Additional Information on the Final Status Survey Reports for the Humboldt Bay Power Plant2020-09-0303 September 2020
Responses to NRC Requests for Additional Information on the Final Status Survey Reports for the Humboldt Bay Power Plant
HBL-20-011, Response to NRC Request for Additional Information on the Final Status Survey Report for the Caisson, Survey Units NOL01-09 and NOL01-09-FSR2020-07-20020 July 2020
Response to NRC Request for Additional Information on the Final Status Survey Report for the Caisson, Survey Units NOL01-09 and NOL01-09-FSR
HBL-20-009, Annual Radiological Environmental Monitoring Report for 20192020-04-30030 April 2020
Annual Radiological Environmental Monitoring Report for 2019
HBL-20-007, Final Status Survey Report for the Humboldt Bay Power Plant Reactor Caisson Survey Units2020-04-0101 April 2020
Final Status Survey Report for the Humboldt Bay Power Plant Reactor Caisson Survey Units
HBL-20-006, Decommissioning Funding Report for Humboldt Bay Power Plant, Unit 32020-03-30030 March 2020
Decommissioning Funding Report for Humboldt Bay Power Plant, Unit 3
HBL-20-003, Annual Report of Occupational Radiation Exposure for Year 20192020-03-25025 March 2020
Annual Report of Occupational Radiation Exposure for Year 2019
HBL-20-005, Annual Radioactive Effluent Release Report for 20192020-03-25025 March 2020
Annual Radioactive Effluent Release Report for 2019
HBL-20-004, 3 to the Defueled Safety Analysis Report; Revision 3 of the License Termination Plan; and Revisions 37, 38, and 39 to the Humboldt Bay Quality Assurance Plan2020-02-24024 February 2020
3 to the Defueled Safety Analysis Report; Revision 3 of the License Termination Plan; and Revisions 37, 38, and 39 to the Humboldt Bay Quality Assurance Plan
HBL-20-002, Title 10 CFR 50.59 Report of Changes1 Tests, and Experiments for the Reporting Interval of January 1, 2018, Through December 31, 20192020-01-27027 January 2020
Title 10 CFR 50.59 Report of Changes1 Tests, and Experiments for the Reporting Interval of January 1, 2018, Through December 31, 2019
HBL-20-001, Request for Exemption from 10 CFR 50.54(w)(1), Concerning Onsite Property Damage Insurance Coverage2020-01-13013 January 2020
Request for Exemption from 10 CFR 50.54(w)(1), Concerning Onsite Property Damage Insurance Coverage
HBL-19-015, Notification of Transfer of Custody Responsibility of a Perkinelmer Liquid Scintillation System2019-11-25025 November 2019
Notification of Transfer of Custody Responsibility of a Perkinelmer Liquid Scintillation System
HBL-19-014, Transmittal of Final Status Survey Report for Six Survey Areas within Survey Unit Ool 102019-10-17017 October 2019
Transmittal of Final Status Survey Report for Six Survey Areas within Survey Unit Ool 10
HBL-19-013, Reclassification of Building 13 (Count Room Building)2019-10-17017 October 2019
Reclassification of Building 13 (Count Room Building)
HBL-19-012, Reclassification of Building 47 Waste Management Facility and the Waste Management Facility Storage Pad2019-07-11011 July 2019
Reclassification of Building 47 Waste Management Facility and the Waste Management Facility Storage Pad
HBL-19-010, Annual Radiological Environmental Monitoring Report for 20182019-04-18018 April 2019
Annual Radiological Environmental Monitoring Report for 2018
HBL-19-007, Decommissioning Funding Report2019-03-28028 March 2019
Decommissioning Funding Report
HBL-19-004, No Annual Report of Occupational Radiation Exposure for Year 20182019-03-0707 March 2019
No Annual Report of Occupational Radiation Exposure for Year 2018
HBL-19-005, Annual Radioactive Effluent Release Report for 20182019-03-0707 March 2019
Annual Radioactive Effluent Release Report for 2018
HBL-18-019, Summary of Changes to the Humboldt Bay Emergency Plan (Revision 9)2018-12-19019 December 2018
Summary of Changes to the Humboldt Bay Emergency Plan (Revision 9)
HBL-18-008, Final Status Survey Report for Mobile Emergency Power Plant Station Area (Survey Unit Ool 10-04)2018-07-19019 July 2018
Final Status Survey Report for Mobile Emergency Power Plant Station Area (Survey Unit Ool 10-04)
HBL-18-007, Annual Radiological Environmental Monitoring Report for 20172018-04-26026 April 2018
Annual Radiological Environmental Monitoring Report for 2017
HBL-18-003, Annual Radioactive Effluent Release Report for 20172018-03-27027 March 2018
Annual Radioactive Effluent Release Report for 2017
HBL-18-004, Decommissioning Funding Report for Humboldt Bay Power Plant. Unit 32018-03-27027 March 2018
Decommissioning Funding Report for Humboldt Bay Power Plant. Unit 3
HBL-18-006, No Annual Report of Occupational Radiation Exposure for Year 20172018-03-27027 March 2018
No Annual Report of Occupational Radiation Exposure for Year 2017
HBL-18-002, Title 10 CFR 50.59 Report of Changes, Tests, and Experiments for the Reporting Interval of January 1, 2016, Through December 31, 20172018-01-29029 January 2018
Title 10 CFR 50.59 Report of Changes, Tests, and Experiments for the Reporting Interval of January 1, 2016, Through December 31, 2017
HBL-17-013, Informational Copy of Humboldt Bay Power Plant, Unit 3, License Termination Plan Changes2017-09-18018 September 2017
Informational Copy of Humboldt Bay Power Plant, Unit 3, License Termination Plan Changes
HBL-17-003, License Termination Plan Technical Basis Documents2017-07-0606 July 2017
License Termination Plan Technical Basis Documents
HBL-17-008, No Annual Report of Occupational Radiation Exposure for Year 20162017-04-27027 April 2017
No Annual Report of Occupational Radiation Exposure for Year 2016
HBL-17-009, Submittal of Annual Radiological Environmental Monitoring Report for 20162017-04-27027 April 2017
Submittal of Annual Radiological Environmental Monitoring Report for 2016
HBL-17-006, Decommissioning Funding Report2017-03-31031 March 2017
Decommissioning Funding Report
HBL-17-001, Final Status Survey Report for New Generation Footprint Area2017-03-0909 March 2017
Final Status Survey Report for New Generation Footprint Area
HBL-17-002, Request for Exemption from the Record-Keeping Requirements of 10 CFR 50 Appendix B, Criterion Xvii; 10 CFR 50.59(d)(3); and 10 CFR 50.71(c)2017-03-0909 March 2017
Request for Exemption from the Record-Keeping Requirements of 10 CFR 50 Appendix B, Criterion Xvii; 10 CFR 50.59(d)(3); and 10 CFR 50.71(c)
HBL-17-004, Report of Changes to the Humboldt Bay Emergency Plan, Revision 82017-03-0202 March 2017
Report of Changes to the Humboldt Bay Emergency Plan, Revision 8
HBL-16-008, Request for Partial Release of Humboldt Bay Power Plant Unit 3 Property from the Part 50 Site2016-11-0909 November 2016
Request for Partial Release of Humboldt Bay Power Plant Unit 3 Property from the Part 50 Site
HBL-16-009, Reclassification of Intake Structure2016-09-28028 September 2016
Reclassification of Intake Structure
HBL-16-007, Annual Radiological Environmental Monitoring Report for 20152016-04-27027 April 2016
Annual Radiological Environmental Monitoring Report for 2015
HBL-16-006, Transmittal of Decommissioning Funding Report2016-03-31031 March 2016
Transmittal of Decommissioning Funding Report
HBL-16-003, Annual Radioactive Effluent Release Report for 20152016-03-24024 March 2016
Annual Radioactive Effluent Release Report for 2015
2021-07-28
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Text
Pacific Gas and Electric Company*
James M. Welsch Diablo Canyon Power Plant Senior Vice President P.O. Box 56 Generation and Avila Beach, CA 9342 4 Chief Nuclear Officer 805.545.3242 E-Mail: James.Welsch@pge.com July 11, 2019 PG&E Letter HBL-19-012 U.S. Nuclear Regulatory Commission 10 CFR 50.82 (a)(9)
ATTN: Document Control Desk Washington, DC 20555-0001 Docket No. 50-133, OL-DPR-7 Humboldt Bay Power Plant, Unit 3 Reclassification of Building 47 Waste Management Facility and the Waste Management Facility Storage Pad at Humboldt Bay Power Plant
Dear Commissioners and Staff:
In accordance with Humboldt Bay Power Plant Unit 3 (HBPP) License Condition 2.C.(5), Pacific Gas and Electric Company (PG&E) is notifying the NRC at least 14 days prior to implementation of reclassification of a survey area to a less restrictive classification. PG&E intends to reclassify Building 47 (Waste Management Facility (WMF)) and the WMF Storage Pad as depicted in Figure 2-2 of the Defueled Safety Analysis Report and described in Section 2.1.8.17 of the License Termination Plan (LTP) from a Multi-Agency Radiation Survey and Site Investigation Manual Class 1 to lower classifications as described below.
The WMF was built during decommissioning and was classified as a Class 1 area based on the expected decommissioning support activities to be conducted in the area. However, a subsequent decision to direct most of the radiological remediation waste to new soil management structures reduced the anticipated radiological impact on the WMF. The current classification as indicated by LTP Section 2.1.8.17 is a Class 1 survey area.
Visual inspections performed of the areas behind the push walls, which are too small for a person to enter, indicate minimal amounts of spoils and decommissioning debris present. A characterization survey was performed June 6, 2019, to assess the radiological impact to the facility from past operations. The survey focused on the limited access areas behind the south push wall of the structure. Direct measurements collected from the structure wall, push wall, and floor where residual material was sampled indicate less than 1 percent of the building surface Derived Concentration Guideline Level (DCGL) for Cs-137. Media samples of spoils, splatter, and debris material collected from the areas prior to direct measurement collection averaged less than 1 percent of the soil DCGL for Cs-137. It should be noted that of all 15 media samples collected, only one indicated Cs-137, an HBPP plant-derived radionuclide, with a result of 3.24E-01 pCi/g. This result is indicative of global fallout concentrations observed for the area.
Document Control Desk PG&E Letter HBL-19-012 July 11, 2019 Page 2 The WMF will be cleaned prior to final status survey (FSS) and then reconfigured as a warehouse facility for the Humboldt Bay Generating Station.
PG&E proposes to perform a survey to the rigors of a Class 2 survey area on accessible concrete surfaces of the floor and walls. The accessible and limited accessible areas within and behind the push wall respectively have the highest potential for contamination; therefore, activity levels should be similar to or greater than the inaccessible areas behind the push walls. However, static measurements of the inaccessible areas behind the push wall will be collected for statistical comparisons with data collected from the accessible areas behind the push wall as part of the Data Quality Objective process for FSS Survey Design.
PG&E also proposes a survey to the rigors of a Class 2 survey area on the remainder of the area surrounding the WMF, known as the WMF Storage Pad. The downgrading of the WMF Storage Pad from a Class 1 to a Class 2 survey unit is reasonable and appropriate given the above history and the absence of activity distinguishable from background from review of routine contamination surveys performed of this area.
PG&E proposes to perform a survey to the rigors of a Class 3 survey area on metal structures such as interior and exterior siding, side support beams, sheet metal roof, and overhead roof struts in the structure. The classification downgrade of the exterior and interior surfaces of the building structure are reasonable and appropriate given the characterization of the facility and the FSS data collected from the Class 2 and Class 3 survey areas surrounding the structure.
The above changes to classification for FSS of the WMF standing structure and WMF Storage Pad will be reflected in the biennial update to the LTP.
PG&E makes no new or revised regulatory commitments (as defined by NEI 99-04) in this letter.
If you have any questions, please contact William Barley, Site Closure Manager, at (707) 444-0856.
Sin~
James M. Welsch
"- c;()~ O= J=~s rJ4di Senior Vice President Generation, and Chief Nuclear Officer cc: John B. Hickman, NRC Project Manager Scott A. Morris, NRC Region IV Administrator HBPP Humboldt Distribution NRC Document Control Desk