# List of Approved Spent Fuel Storage Casks: NAC International NAC-UMS® Universal Storage System, Certificate of Compliance No. 1015, Amendment No. 8
> **Nuclear Regulatory Commission** · Direct final rule. · Published 2021-08-05 · Effective 2021-10-19 · 86 FR 42681
## Document
- **Document number:** 2021-16702
- **Category:** nuclear-waste
- **Sub-agency:** Nuclear Regulatory Commission
- **Federal Register citation:** 86 FR 42681
- **CFR reference:** 10 CFR 72
- **Publication date:** 2021-08-05
- **Effective date:** 2021-10-19
- **Energy docket:** NRC-2021-0052
## Abstract

The U.S. Nuclear Regulatory Commission (NRC) is amending its spent fuel storage regulations by revising the NAC International NAC- UMS[supreg] Universal Storage System listing within the "List of approved spent fuel storage casks" to include Amendment No. 8 to Certificate of Compliance No. 1015. Amendment No. 8 revises the certificate of compliance to: Add the storage of damaged boiling-water reactor spent fuel, including higher enrichment and higher burnup spent fuel; change the allowable fuel burnup range; expand the boiling-water reactor class 5 fuel inventory that could be stored in the cask; and revise definitions in the technical specifications.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2021/08/05/2021-16702/list-of-approved-spent-fuel-storage-casks-nac-international-nac-ums-universal-storage-system)
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