ML18025B126
| ML18025B126 | |
| Person / Time | |
|---|---|
| Site: | Northwest Medical Isotopes |
| Issue date: | 01/16/2018 |
| From: | NRC/OGC |
| To: | NRC/OCM |
| SECY RAS | |
| References | |
| 50-609-CP, Construction Permit Mndtry Hrg, RAS 54173 | |
| Download: ML18025B126 (9) | |
Text
Northwest Medical Isotopes Construction Permit Application Review
- Mandatory Hearing (Safety Panel 2)
- January 23, 2018 NRC-012 United States Nuclear Regulatory Commission Official Hearing Exhibit In the Matter of:
NORTHWEST MEDICAL ISOTOPES, LLC (Medical Radioisotope Production Facility)
Commission Mandatory Hearing Docket #: 05000609 Exhibit #:
Identified:
Admitted:
Withdrawn:
Rejected:
Stricken:
Other:
NRC-012-MA-CM01 1/23/2018 1/23/2018
Panelists
- Project Manager, NRR
- Reliability and Risk Analyst, NMSS
- Senior Project Manager, NMSS
- Senior Chemical Engineer, NMSS 2
Accident Analysis Methodology
- NWMI used an ISA methodology for its accident analyses
- IROFS and management measures to be selected to demonstrate safety
- Consistent with the ISG Augmenting NUREG-1537, radiological and chemical hazards evaluated against consequence criteria in 10 CFR 70.61 3
ISA Methodology
- Northwest submitted an ISA Summary of the accident analysis of radiological and chemical hazards
- ISA Summary contains:
- Hazard analyses results
- Qualitative assessment of likelihood, consequences, and risk category
- Identification of accident sequences 4
ISA Methodology (continued)
- ISA methodology found adequate to identify IROFS to prevent or mitigate accidents and prevent an inadvertent criticality
- Management measures to assure availability and reliability of IROFS will be reviewed in the OL application
- Staff found that ISA process adequate to support identification of hazards and mitigation or prevention of accidents 5
Radiological and Criticality Safety
- PSAR/ISA Summary presented multiple accident sequences involving liquid spills, sprays and leaks with impacts to radiological and criticality safety
- Staff evaluated engineered safety features including items relied on for safety
- Analysis provides reasonable assurance that credible accident sequences have been identified 6
Chemical Safety
- Staff reviewed the design, accident analysis, and proposed safety features
- Staff conducted independent analyses of chemical hazards
- NWMI identified additional chemical safety research and development related to ion exchange system
- Staff concludes that the chemical hazards can be adequately managed 7
Summary of Accident Analysis Findings
- Northwest adequately assessed risks to public health and safety for issuance of a construction permit 8
- IROFS - Items relied on for safety
- ISA -
Integrated safety analyses
- PSAR - Preliminary Safety Analysis Report
- NMSS - Office of Nuclear Material Safety and Safeguards
- Office of Nuclear Reactor Regulation
- NWMI - Northwest Medical Isotopes 9