ML21019A267
| ML21019A267 | |
| Person / Time | |
|---|---|
| Site: | 07007004 |
| Issue date: | 12/15/2020 |
| From: | Wiehle K Centrus Energy Corp |
| To: | Jean Trefethen NRC/NMSS/DREFS/ERMB |
| Trefethen J | |
| Shared Package | |
| ML21019A270 | List: |
| References | |
| Download: ML21019A267 (2) | |
Text
From: Wiehle, Kelly L To: Trefethen, Jean Cc: Coflin, Monika; Faraz, Yawar
Subject:
[External_Sender] FW: ACTION: NRC Clarifications Requested -- Environmental Report Date: Tuesday, December 15, 2020 1:27:27 PM Please see below for responses:
- 1. Yes, it is accurate to say that similar processes to LCF Operations will be used to monitor radionuclide releases from the HALEU Demonstration. Also, release modeling has been completed using CAP88-PC Version 4.1 and verifies public doses will be lower than the EPA standard and the NRC limit.
- 2. The nearest member of the public is approximately 2,200 feet (670 meters) from the site fence line. However, the distance from the monitored vent to the nearest member of the public will be approximately 3,907 feet (1191 meters).
- 3. There are no plans for Centrus to store hazardous wastes generated on site for more than 90 days, thus we do not have a Hazardous Waste Facility Permit, nor any intentions of applying for one. We plan to ship any hazardous wastes within 90 days of generation to a licensed hazardous waste treatment, storage, and disposal facility utilizing a properly regulated hazardous waste transporter. We will follow our procedures and the regulations for proper handling and storage, including weekly inspections, of any hazardous wastes that may be generated by Centrus during the HALEU Demonstration.
- 4. There is no general unclassified discussion of the accidents.
From: Trefethen, Jean Sent: Tuesday, November 10, 2020 3:38 PM To: Wiehle, Kelly L <wiehlekl@centrusenergy.com>
Cc: Coflin, Monika; Faraz, Yawar
Subject:
Clarifications on
[EXTERNAL EMAIL]
Hello Kelly, Below are some questions/clarifications that Monika and I need for the draft EA. We need these addressed to move forward with completion of the draft EA. If you have questions or concerns please reach out via email or phone and I will do my best to address them.
Thank you in advance for your prompt response.
Draft EA input needing clarification where appropriate or confirmation that the information stated is accurate.
- 1. During LCF operations, radionuclide releases to the air were measured by a continuous vent or estimated in accordance with guidance in 40 CFR Part 61, Appendices D and E. Atmospheric dispersion of the releases was modeled, and the
consequent public radiation dose was estimated using EPA-approved computer models in accordance with EPA guidance. The calculated public airborne radiation doses were all lower than the anticipated maximum, the EPA standard, and the NRC limit. For the HALEU Demonstration, is it accurate to say that a similar process would be used to monitor radionuclide releases, and that release modeling has provided calculated public doses lower than the EPA standard and the NRC limit?
- 2. Please confirm the proximity of the HALEU Demonstration to the nearest member of the public (i.e., permanent residence) is about 2,200 feet (ft) (670 meters m]) (ACO 2020a).
- 3. The LAR indicates that licensee does not plan to store hazardous wastes generated on site for more than 90 days. However, if waste required storage on site for more than 90 days for characterization, profiling, or scheduling for treatment or disposal, a Hazardous Waste Facility Permit would be required and requested at the appropriate time (ACO 2020a). Does Centrus you plan to store hazardous waste for more than 90 days and if so do they have this permit? What is the plan for disposal if not storing on site for longer than 90 days?
- 4. We need a publicly available reference for general discussion on accidents. The only source we have identified is one of the ISA Appendices but the doc used is OUO (ACO 2020c, found below). Is there a publicly available document that provides a general discussion?
(ACO 2020a) is ACO (American Centrifuge Operating, LLC). 2020a. License Amendment Request Application and Supporting Documents, May 2020. ADAMS Accession No. ML20139A109.
(ACO 2020c) is ACO (American Centrifuge Operating). 2020c. Enclosure 6 of ACO 20-0010, Proposed Changes for LA-3605-0003A, Addendum 1 of the Integrated Safety Analysis Summary for the American Centrifuge Plant - HALEU Demonstration in Piketon, Ohio, April 2020.
Jean Trefethen Environmental Project Manager U.S. Nuclear Regulatory Commission