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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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Loren D. Sharp Humboldt Bay Power Plant Pacific Gas and Senior Director 1000 King Salmon Avenue Electric Company'"' Humboldt Bay Nuclear Eureka, CA 95503 707 .444.0819 Internal: 375.0819 Fax: 707.444.0871 September 28, 2016 PG&E Letter HBL-16-009 U.S Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Docket No. 50-133, License No. DPR-7 Humboldt Bay Power Plant, Unit 3 Reclassification of Intake Structure
Dear Commissioners and Staff:
This letter is being submitted in accordance with Humboldt Bay Power Plant Unit 3 (HBPP) License Condition 2.C.(5) that requires Pacific Gas and Electric Company (PG&E) to notify 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 the intake structure from Class 1 to Class 3, as described below.
At the time the HBPP Historical Site Assessment was developed, there were no characterization data available for the intake structure. As a result, PG&E labeled the intake structure a Multi Agency Radiation Survey and Site Investigation Manual (MARSSIM) Clas_sification 1. Since a portion of the structure is now slated to remain, PG&E designed and performed a characterization survey to determine the appropriate classification.
The configuration of the intake structure was such that the entire structure was a confined space and could not be safely accessed. Therefore, PG&E surveyed the area of the structure where the most potential for contamination exists (i.e., the Unit 1 intake chambers with proximity to spill area).
The characterization survey performed included beta measurement scans and direct.
measurements for alpha and beta surface emissions using gas flow proportional detectors. The results indicated a highest alpha measurement of 23 dpm/100cm 2 or approximately 1 percent of the alpha Derived Concentration Guideline Level, Gross Activity (DCGL 8 A). The highest beta measurement was 957 dpm/100cm 2 or approximately 2.4 percent of the beta DCGLGA* None of the direct measurements were adjusted for background. Scans of the floor and walls indicated no audible indications above background. In total, fifteen (15) direct alpha and direct beta measurements were taken and greater than 10 percent of the accessible
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Document Control Desk PG&E Letter HBL-1a.:009 September 28, 2016 Page2 interior structure surfaces were beta scanned. Additionally, laboratory sample analysis of material removed from the intake surface to facilitate the survey indicated no plant related radioactivity. The characterization survey was performed to the rigors of a Final Status Survey (FSS).
Based on the results of the characterization survey and sampling, PG&E determined that the following methodology is appropriate for the intake structure:
- 1. The characterization supports the reclassification of the HBPP intake structure to a MARSSIM Classification 3 (i.e., results were at a small fraction of the HBPP building surface DCGL).
- 2. The survey data from the characterization is sufficiently rigorous and will be used for the FSS of the structure.
3 Due to safety concerns for survey personnel, PG&E determined the structure to be a special situation that will be evaluated by judgmental measurements.
As described in Section 5.5.3.3 of MARSSIM, the judgmental measurements will be compared directly to the HBPP building surface DCGLs. The measurements will not be used for a nonparametric statistical test described in MARSSIM, but will be compared directly to the HBPP building surface DCGLs.
4 The radiological status of the entire structure will be determined from the data collected in the characterization survey.
There are no new or revised regulatory commitments (as defined in NEI 99-04) made in this letter.
If you wish to discuss the information above, please contact Mr. Hossein Hamzehee at (805) 545-4720.
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Loren D. Sharp Senior Director Humboldt Bay Nuclear cc: Kriss M. Kennedy, NRC Region IV Administrator John 8. Hickman, NRC Project Manager HBPP Humboldt Distribution