# List of Approved Spent Fuel Storage Casks: NAC-MPC Revision
> **Nuclear Regulatory Commission** · Direct final rule. · Published 2001-08-30 · Effective 2001-11-13 · 66 FR 45749
## Document
- **Document number:** 01-21934
- **Category:** nuclear-waste
- **Sub-agency:** Nuclear Regulatory Commission
- **Federal Register citation:** 66 FR 45749
- **CFR reference:** 10 CFR 72
- **Publication date:** 2001-08-30
- **Effective date:** 2001-11-13
## Abstract

The Nuclear Regulatory Commission (NRC) is amending its regulations revising the NAC-MPC cask system listing within the "List of Approved Spent Fuel Storage Casks" to include Amendment No. 1 to Certificate of Compliance Number 1025. Amendment No. 1 will modify the present cask system design to permit a licensee to use an alternate fuel basket design with enlarged fuel tubes in corner locations; increase the operational time limits provided in the Technical Specifications (TS) for canister loading, closure, and transfer when canister heat loads are lower than design basis heat loads; revise the canister surface contamination limits in TS to maintain worker dose as low as is reasonably achievable (ALARA); and revise some drawings to reflect changes identified during cask and component fabrication under a general license.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2001/08/30/01-21934/list-of-approved-spent-fuel-storage-casks-nac-mpc-revision)
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