# List of Approved Spent Fuel Storage Casks: Holtec International HI-STORM Flood/Wind System, Certificate of Compliance No. 1032, Amendment No. 10

**Action Urgency Score:** 30/100

| Field | Value |
|---|---|
| Agency | Nuclear Regulatory Commission |
| Type | Final rule |
| Action | Direct final rule. |
| Published | 2026-07-23 |
| Effective | 2026-10-06 |
| Comments close | 2026-08-24 |
| Significant | No |
| CFR parts | 10 CFR 72 |
| Summary | The U.S. Nuclear Regulatory Commission (NRC) is amending its spent fuel storage regulations by revising the Holtec International HI- STORM Flood/Wind (FW) System listing within the "List of approved spent fuel storage casks" to include Amendment No. 10 to Certificate of Compliance (CoC) No. 1032. Amendment No. 10 revises the CoC for the HI-STORM FW dry storage system to incorporate several enhancements. These changes include the introduction of the HI-STORM FW Extended Configuration, adoption of a methodology for developing site-specific loading patterns with higher allowable per-canister and  |
| Document number | 2026-14876 |

## Why this score
- Final rule.

Source: Federal Register API (Office of the Federal Register) (https://www.federalregister.gov/documents/2026/07/23/2026-14876/list-of-approved-spent-fuel-storage-casks-holtec-international-hi-storm-floodwind-system-certificate). Last refreshed: 2026-11-04T09:17:43.641Z.
Data from the Federal Register API; the published Federal Register document is authoritative. Informational only, not legal advice.