# List of Approved Spent Fuel Storage Casks: HI-STORM 100 Cask System; Amendment No. 9
> **Nuclear Regulatory Commission** · Direct final rule. · Published 2013-12-06 · Effective 2014-02-19 · 78 FR 73379
## Document
- **Document number:** 2013-29162
- **Category:** nuclear-waste
- **Sub-agency:** Nuclear Regulatory Commission
- **Federal Register citation:** 78 FR 73379
- **CFR reference:** 10 CFR 72
- **Publication date:** 2013-12-06
- **Effective date:** 2014-02-19
- **Energy docket:** NRC-2012-0052
## Abstract

The U.S. Nuclear Regulatory Commission (NRC) is amending its spent fuel storage regulations by revising the Holtec International HI- STORM 100 Cask System listing within the "List of Approved Spent Fuel Storage Casks" to include Amendment No. 9 to Certificate of Compliance (CoC) No. 1014. Amendment No. 9 broadens the subgrade requirements for the HI-STORM 100U part of the HI-STORM 100 Cask System and updates the thermal model and methodology for the HI-TRAC transfer cask from a two dimensional thermal-hydraulic model to a more accurate three dimensional model. The amendment also makes editorial corrections.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2013/12/06/2013-29162/list-of-approved-spent-fuel-storage-casks-hi-storm-100-cask-system-amendment-no-9)
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