HBL-17-013, Informational Copy of Humboldt Bay Power Plant, Unit 3, License Termination Plan Changes
| ML17261B264 | |
| Person / Time | |
|---|---|
| Site: | Humboldt Bay |
| Issue date: | 09/18/2017 |
| From: | Franke J Pacific Gas & Electric Co |
| To: | Document Control Desk, Office of Nuclear Material Safety and Safeguards |
| References | |
| HBL-17-013 | |
| Download: ML17261B264 (5) | |
Text
PacHic Gas and Electric Company" September 18, 2017 PG&E Letter HBL-17-013 U.S Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555-0001 Docket No. 50-133, License No. DPR-7 Humboldt Bay Power Plant, Unit 3 Jon A. Franke Vice President Generation Technical Services P.O. Box 56 Avila Beach, CA 93424 805.545.4888 E-Mail: J6FD@pge.com Informational Copy of Humboldt Bay Power Plant. Unit 3, License Termination Plan Changes
Dear Commissioners and Staff:
On May 3, 2013, Pacific Gas and Electric Company (PG&E) submitted a proposed License Termination Plan (L TP) for Humboldt Bay Power Plant (HBPP), Unit 3, via PG&E Letter HBL-13-007, "License Amendment Request 13-01, Addition of License Condition 2.C.5, 'License Termination Plan."' On August 13, 2014, PG&E submitted HBPP LTP Revision 1, via PG&E Letter HBL-14-015, which was approved by the NRC on May 4, 2016.
The Enclosure to this letter contains an informational copy of L TP changes. One of the changes to the L TP includes a change to Chapter 1, page 1-10, which removes the requirement to submit an LAR when releasing a portion, or portions, of the site from the license after meeting the release criteria. The other change includes Chapter 5, page 5-42, which removes the requirements for placing various classes of backfill material in certain class areas.
This submittal is for information only and does not alter the conclusions of the Determination of No Significant Hazards Consideration or the Environmental Impact Consideration as presented in Letter H BL-13-007.
PG&E makes no new or revised regulatory commitments (as defined by NEI 99-04) in this letter.
If you wish to discuss the information in the enclosure, please contact Mr. William Barley at (707) 444-0856.
Document Control Desk September 18, 2017 Page 2 Vic President, Generation Technical Services Enclosure cc:
HBPP Humboldt Distribution cc/enc: John B. Hickman, NRC Project Manager PG&E Letter HBL-17-013 Scott A. Morris, NRC Region IV Administrator (Acting)
Gonzalo L. Perez, California Department of Public Health
Enclosure PG&E Letter HBL-17-013 Informational Copy of License Termination Plan Changes
CR 12-03
~ I Humboldt Bay Power Plant License Termination Plan Chapter 1 General Information Revision 2 August 201 7 domestic water system. Raw water is taken directly from the surface of the Mad River and delivered untreated to industrial customers. HBPP does not use raw water from the Humboldt Bay Municipal Water District. The Humboldt Bay Municipal Water District produces 20 million gallons per day of water from five Ranney wells in the Mad River near Essex, located approximately 17 miles from the HBPP site, and from three wells located at the base of Humboldt Hill, approximately 4 miles from the HBPP site.
1.2 Decommissioning Approach PG&E is submitting this L TP to address residual radioactivity on the HBPP site and discuss how the site will be remediated and verified to meet the release criteria. The L TP describes how the release criteria were determined and how they will be measured.
All structures associated with Unit 3 will be removed, along with temporary decommissioning support trailers. At license termination, only the following structures will remain:
HBGS and associated structures Administration Building Administration Annex Building Security Building Count Room Building Training Building Waste Management Building ISFSI and supporting structures PG&E wishes to perform a partial site release of the site south of King Salmon Avenue to the Humboldt Bay Harbor District. For this reason, it will be necessary to request HBPP site release for unrestricted use in phases. The first phase would be complete when the portion of the site south of King Salmon Avenue has been verified to meet acceptance levels through final status surveys (FSSs). The subsequent phases would be completed when the portions of the site are verified to meet acceptance levels.
The objective of decommissioning HBPP Unit 3 is to reduce the level of residual radioactivity remaining from reactor operation to levels that permit the release of the HBPP site for unrestricted use 1-10
CR 12-03 Humboldt Bay Power Plant License Termination Plan Chapter 5 Final Status Survey Plan 5.4.3.2 Bulk Materials Revision 2 August 201 7 Soils satisfying the criteria for unrestricted release will be stockpiled for use as onsite backfill material. The radiological evaluation of soils resulting from minor trenching and digging efforts in Class 3 defined areas (no reasonable potential for subsurface contamination) will be performed by characterization survey in accordance with site procedures. Excavated soils that demonstrate residual radioactivity consistent with Class 3 status will be released for use as onsite excavation backfill.
All soil stockpiles at HBPP are under the Stormwater Pollution Prevention Plan Best Management Practices and are therefore required to have a lower and upper cover and be waddled in the middle.
5.4.3.3 Embedded Piping and Buried Piping Embedded and buried piping may remain after decommissioning HBPP. Separate FSS survey plans will be developed for embedded/buried piping, which will include survey unit DQOs. These FSS plans will include the following items:
radionuclides of interest and chosen surrogate levels and distribution of contamination internal surface condition of the piping internal residues and sediments and their radiation attenuation properties removable and fixed surface contamination instrument sensitivity and related scan and fixed minimum detectable concentrations piping geometry and presence of internally inaccessible areas/sections instrument calibration Accessible internal surfaces are surveyed the same as other structural surfaces. Scale and sediment samples will be obtained, if appropriate, as well as smears and wipes to assist in the identification of the total radionuclide deposits within the piping. The activity of the internal surfaces will be 5-42