ML18052B275
| ML18052B275 | |
| Person / Time | |
|---|---|
| Issue date: | 02/22/2018 |
| From: | Maupin C Division of Decommissioning, Uranium Recovery and Waste Programs |
| To: | |
| CMaupin NMSS DUWP | |
| References | |
| Download: ML18052B275 (17) | |
Text
Greater-Than-Class C (GTCC) and Transuranic Waste Disposal February 22, 2018 Cardelia Maupin, Sr. Project Manager, NMSS/DUWP/LLW Telephone No: 301-415-4127 Email: Cardelia.Maupin@nrc.gov Tim McCartin NMSS/DSFM Telephone No: 301-415-7099 Email: : Timothy.McCartin@nrc.gov
Purpose of Meeting
- Stakeholder participation and involvement
- Identification of various technical issues
- Assist in the development of a regulatory basis for the disposal of GTCC and TRU wastes
- Supports NRCs openness strategies and cumulative effects of regulation initiatives 2
Low-Level Waste (LLW) and Transuranic Waste LLW Trans-Class uranic Class B Waste A
Class GTCC C
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Regulatory Basis for GTCC and Transuranic Wastes
- SECY-15-0094 - Texas request for clarification on Agreement State authority to regulate GTCC
- SRM-SECY-15-0094 - prepare a regulatory basis for the disposal of GTCC waste through means other than deep geologic disposal
- Address transuranic waste in 10 CFR 61.2 Definitions
- SRM-SECY-16-0106 - due 6 months after publication of Part 61 supplemental proposed rule 4
Next Steps Potential Part 61 Prepare Rule for Regulatory GTCC and Complete Basis with Part 61 Transuranic Public Waste Supplemental Workshops Proposed Disposal Rule 5
Draft Technical Analysis
- Assist in the identification of potential hazards, for example o inventories o security
- Assist public to respond to NRC staff questions 6
GTCC Waste Three categories of GTCC waste:
- activated metals, sealed sources, and other waste Reactor Sealed Glove Boxes Vessels Sources 7
Activated Metals
- Metal components from nuclear reactors are most significant source
- Surface contamination on metal surfaces
- Activated radionuclides throughout metal
- Short-lived radionuclides generate heat
- Some transuranic radionuclides present in surface contamination 8
Sealed Sources
- Irradiators typically used in medical applications (e.g., hospitals, universities, research) o short lived sources (Cs-137 - 30 year half-life) o transuranic radionuclides (e.g., Pu isotopes)
- Fissile radionuclides present (Pu-239)
- Short-lived radionuclides generate heat 9
Other Waste
- Variety of potential sources, for example:
o potential exhumation of West Valley waste o production of radioisotopes for nuclear imaging procedures (e.g., Mo-99 production)
- Fissile radionuclides present from Mo-99 production (e.g., Pu-239) 10
GTCC Technical Considerations
- Thermal Output
- Gas Generation
- Fissile Material
- Long-lived Daughter (Progeny) 11
Radionuclides of Potential Interest based on Draft Analysis (depends on analysis assumptions)
Hazard Activated Metals Sealed Sources Other Waste (Commercial Reactors) (Mo-99 Production) 500 yrs 5,000 yrs 500 yrs 5,000 yrs 500 yrs 5,000 yrs Off-site Dose Pu-239 Pu-239 Am-241, Pu-239, Pu-239 Pu-239 Pu-239 Am-241 Cs-137 Thermal Output Ni-63 None Am-241 None None None Fissile None None Pu-239 Pu-239 U-235 U-235 Material Gas Generation Ni-63 None Am-241 None None None Intruder Dose C-14, Ni-59, C-14, Ni-59, Am-241 Pu-239 Pu-238, Pu-239, Pu-239, (shallow) Nb-94, Ni-63 Nb-94, Ni-63 Pu-240, Am-241 Pu-240 Intruder Dose None None Am-241 Pu-239 None None (deep) 12
Three Questions
- 1) What are the important radionuclides that need to be considered for the disposal of the GTCC and transuranic wastes?
- 2) How might GTCC and transuranic wastes affect the safety and security of a disposal facility during operations (i.e., pre-closure period)?
- 3) How might GTCC and transuranic wastes affect disposal facility design for post-closure safety including protection of an inadvertent intruder?
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Stakeholder Outreach and Involvement
- Updated information on GTCC and transuranic wastes found on NRC Website:
https://www.nrc.gov/waste/llw-disposal/llw-pa/gtcc-transuranic-waste-disposal.html
- Federal Register Notice to Conduct GTCC and Transuranic Waste Scoping Meeting and Request for Comment (83 FR 6475): Feb. 14, 2018 14
How to Provide Comments
- Federal Register notice (83 FR 6475) provides various methods of submitting comments:
- Federal Rulemaking Website:
Go to http://www.regulations.gov and search for Docket ID NRC-2017-0081
- Email comments: Rulemaking.Comments@nrc.gov
- Fax comments: 301-415-1101
- Mail comments to: Secretary, U.S. Nuclear Regulatory Commission, Washington, DC 20555-0001, ATTN:
Rulemakings and Adjudications Staff
- Hand deliver comments: 11555 Rockville Pike, Rockville, Maryland 20852, between 7:30 a.m. and 4:15 p.m. (EST)
Federal workdays; telephone: 301-415-1677.
Comment period ends April 16, 2018 15
For Additional Information:
- Federal Rulemaking Website:
Go to http://www.regulations and search for Docket ID NRC-2017-0081
- NRCs Public Web Site for GTCC:
https://www.nrc.gov/waste/llw-disposal/llw-pa/gtcc-transuranic-waste-disposal.html
- NRC
Contact:
Cardelia Maupin - Sr. Project Manager 301-415-4127; Cardelia.Maupin@nrc.gov 16
Questions?
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