ML20321A197
| ML20321A197 | |
| Person / Time | |
|---|---|
| Site: | 07109390 |
| Issue date: | 12/01/2020 |
| From: | Office of Nuclear Material Safety and Safeguards |
| To: | NAC International |
| BHWhite-NMSS/DFM/STLB-301.415.6577 | |
| Shared Package | |
| ML20321A195 | List: |
| References | |
| EPID L-2020-LLA-0202 | |
| Download: ML20321A197 (1) | |
Text
Observations Model No. OPTIMUS-L Transport Package Docket No. 71-9390 Revision No. 0 By letter dated September 9, 2020 (Agencywide Documents Access and Management System Package Accession No. ML20266G182), NAC International (NAC) submitted an application for approval of the Model No. OPTIMUS-L transport package. The application is for a new package design for shipment of transuranic waste and irradiated fuel waste.
In connection with its acceptance review of the OPTIMUS-L package application, the U.S.
Nuclear Regulatory Commission staff (the staff) had observations related to Chapters 2 and 3 of the application. These observations may be later included in a request for additional information (RAI) letter, to confirm whether the applicant has demonstrated compliance with regulatory requirements. The requested information is listed by chapter number and title in the safety analysis report (SAR).
2.0 Structural Evaluation
- 1. Clarify whether the weight of the optional 1 and 2 1/4 shield insert assemblies (SIAs) were included in the following analyses:
- a. Calculation of maximum weight and center of gravity,
- b. the structural evaluations during normal conditions of transport (NCT) and hypothetical accident conditions (HAC)
- c. the lifting and tie down analysis. Revise and update the analysis if these optional SIAs have not been considered Proposed Revision 20A of the SAR Chapter 2, Section 2.1.1, Discussion, states that an optional SIA may be used inside the cask containment vessel (CCV) to provide additional shielding for high activity contents. The SAR states that the stresses in the packaging structural components are calculated for load combinations during NCT and in HAC, and the stresses are compared to the allowable stress design criteria described in Section 2.1.2.2.
it is not clear whether the cited normal gross weight (9,200 lbs.) includes the optional SIA weight in the load combination as described in SAR Section 2.1.2.1, Load Combinations, and the bounding lifting load of 10,000 lbs. cited in the SAR Section 2.5.1 Lifting Devices. If the SIA assembly weight is not included in the calculations this would yield non conservative results in the safety analysis. If the weight of the SIA was not included the Update calculations as necessary.
This information is needed to determine compliance with the regulatory requirements in Title 10 of the Code of Federal Regulations (10 CFR) 71.33(a), 10 CFR 71.71(c)(7)(c)(8), 10 CFR 71.73(c)(1)(c)(3), and 10 CFR 71.45(a).
3.0 Thermal Evaluation All Observations contain proprietary information.
Enclosure 1