# List of Approved Spent Fuel Storage Casks: NAC International NAC-UMS Universal Storage System, Certificate of Compliance No. 1015, Amendment No. 9
> **Nuclear Regulatory Commission** · Direct final rule. · Published 2022-06-14 · Effective 2022-08-29 · 87 FR 35858
## Document
- **Document number:** 2022-12746
- **Category:** nuclear-waste
- **Sub-agency:** Nuclear Regulatory Commission
- **Federal Register citation:** 87 FR 35858
- **CFR reference:** 10 CFR 72
- **Publication date:** 2022-06-14
- **Effective date:** 2022-08-29
- **Energy docket:** NRC-2022-0049
## Abstract

The U.S. Nuclear Regulatory Commission (NRC) is amending its spent fuel storage regulations by revising the NAC International NAC- UMS Universal Storage System listing within the "List of approved spent fuel storage casks" to include Amendment No. 9 to Certificate of Compliance No. 1015. Amendment No. 9 revises the certificate of compliance to correct the effective thermal properties for pressurized- water reactor fuel assemblies used in the certification basis ANSYS thermal models and to update modeling assumptions. In addition, this direct final rule makes editorial corrections to Amendment No. 8.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2022/06/14/2022-12746/list-of-approved-spent-fuel-storage-casks-nac-international-nac-ums-universal-storage-system)
---
*AI Analytics · CC0 1.0*