ML110670527

Presentation Slides from March 7, 2011, Meeting with Humboldt Bay Power Plant Unit 3, on Decommissioning, License Termination, & Alternate Disposal Exemption Request

ML110670527
Person / Time
Site:	Humboldt Bay
Issue date:	03/07/2011
From:	Pacific Gas & Electric Co
To:	NRC/FSME
References
Download: ML110670527 (23)

Text

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• Initiate License Termination Plan (LTP) review process with the NRC

" Provide overview of path forward

- Schedule

- Issues/Concerns

• Methodology of Derived Concentration Guideline Levels (DCGLs)

• Final Status Survey (FSS) release criteria

Site Desc . . .. .* ..

iptiOn

" Humboldt Bay Power Plant.(HBPP) Unit 3 a 220 MWt (65 Mwe) Boiling Water Reactor

" HBPP Unit 3 operated commercially from August 1963 until July 1976

" Unit 3 is on same site as the ISFSI, fossil Units 1 and 2 and recently completed 10 unit Humboldt Bay Generating Station (HBGS) 3

i i Major Activte

....a j .o ._.....

I'7,

• HBGS completed construction and startup (2010)

• Units I and 2 demolition (2010-2011)

• 60 Kv Switchyard (2012)

• Reactor vessel removal (2012)

• Removal and demolition of Unit 3 piping, components and structures (2010-2014)

• Site FSS (2015-2016) z-I

W Li ce nse Te r m i .n.atio tFI Apply "lessons learned" from previous LTP submittals Draw upon experience of HBPP personnel Maintain open dialogue early with the NRC and Stakeholders

§-r A strong foundation provides for a strong, defensible program 5

__00 % -% '%6-A,-%0 .. %N I' i~ cense Term inatiion-Historical Site Assessment (HSA) developed Performed characterizations Developed site specific DCGLs Develop and Submit LTP, License Amendment Request (LAR), HSA

>Public Meeting

>NRC Approval/License Amendment Develop FSS Program Perform FSS Submit Final Reports NRC Terminates License 6

I 'EkIVIi

'LT F Sc.hedu Develop DCGLs Complete LTP Meeting with NRC March 7, 2011 Write LTP In Progress I Submit LTP December 2011 7

3 LL&Issess M,

" Personal interviews of former HBPP personnel employed during Unit 3 operations

" Documents reviewed

- Plant operating reports and logs

- Licensee Event Reports

- Construction and as-built drawings

- Maps and photographs

- Environmental and radiological characterization reports

" Submit with LTP 8

aracterizat.ons

" Characterization performed in 1997

- MARSSIM based sampling survey

" A comprehensive characterization effort performed in 2007-2008

- Surface scans and fixed-point measurements

- Soil sampling and gamma walkovers

" Ongoing characterization of the site

- Excavation soil sampling

- Cross-Contamination Prevention & Monitoring Plan 9

Formulate an initial list of potential nuclides yes no 10

DCGLs

• ~

ýtl Site-Specific S uite of Nuclides H-3 1-129 Pu-241 C-14 Cs-137 Am-241 Ni-59 Eu-152 Cm-243 Co-60 Eu-I 54 Cm-244 Ni-63 Np-237 Cm-245 Sr-90 Pu-238 Cm-246 Nb-94 Pu-239 Tc-99 Pu-240 11

DCGLs

" HBPP Unit 3 located on an industrial site co-located with electricity producing units (HBGS)

• Humboldt Bay site essential to electrical needs in the area

• No better site available in the region to locate generating stations

- Infrastructure in place

- Remote location

- California Coastal Commission

- Environmental impact

- Active Switchyard

- Transmission/Distribution

- Natural Gas 12

'I DCGLs Scenarios 0 Building Surfaces

- Industrial Worker

- Parameters

• Soils

- Industrial Worker

- Parameters 13

rX 11 "evel op FSS Proga.m .

• Develop HBPP Site-Specific FSS Procedures

• Develop Technical Basis Documents as necessary to support FSS effort

• Compi Ie Su rvey Unit FSS Survey Packages for each Survey Area

• Identify fin a I classifications for Survey Units

• Perform nE.cessary reviews and approvals of FSS Survey Packages 14

II Perftorm ... F

• Take isolation and controls of units

• Perform FSS

• Perform any investigations

• Perform Data Quality Assessment (DQA) on data

• Formulate decision based on Data Quality Objectives (DQOs)

• Archive data 15

Submiti t- Final a i eports m ' " * " ' -* ""

~1 e Write "Pilot Report"

• Compile records when all Survey Units in a Survey Area complete

• Write and submit Final Report for each Survey Area

• Archive the report 16

!II u:Lture Interacti ons

" Teleconference Meetings

" Correspondence

" Public Meeting(s) 17

NRC/PG&E MEETING MARCH 7,2011 HUMBOLDT BAY POWER PLANT ALTERNATE DISPOSAL EXEMPTION REQUEST Pacific Gas and Electric Company"

PURPOSE and AGENDA rDiscuss results of first exe mption

• 1 request r;-Discuss proposed seco nd exe mption request 2

FIRST EXEMPTION REQUEST go- -- -b

• . April 1, 2010 - PG&E Submits Request for 200,000 cu. ft.

July 16, 2010 - NRC Submits Questions rt July 29, 2010 - NRC/PG&E Public Meeting r;7 August 12, 2010- PG&E Submits Revised Request v-, November 2, 2010- NRC Approves r December 16, 2010 - State of Idaho Concurs 3

FIRST EXEMPTION REQUEST Concentration Limits in First Exemption Request r Actual Concentration Values (to date) 4

SECOND EXEMPTION REQUEST r' Proposed for 2,000,000 cu. ft.

• Basis for Volume

• Similar to First Request

• - Concentration Limits from First Request V Isotope Concentrations Based on Actual Shipments/Disposal

• Dose Estimates for Second Request

.Submittal Expected in Mid-2011 5

CONCLUSIONS Con mments/Questions 6