{
  "platform": "civiq",
  "version": 1,
  "type": "comment-period",
  "data": {
    "documentNumber": "2026-13261",
    "title": "List of Approved Spent Fuel Storage Casks: NAC International, Inc., MAGNASTOR[supreg] Storage System, Certificate of Compliance No. 1031, Amendment Nos. 16 and 17 and Revisions to Amendment Nos. 0 Through 16",
    "summary": "The U.S. Nuclear Regulatory Commission (NRC) is proposing to amend its spent fuel storage regulations by revising the NAC International, Inc. (NAC) MAGNASTOR[supreg] System listing within the \"List of approved spent fuel storage casks\" to include Amendment Nos. 16 and 17 and revisions to Amendment Nos. 0 through 16 to Certificate of Compliance (CoC) No. 1031. Amendment No. 16 revises the CoC to permit alternate methods for determining the free volume inside a loaded canister and for measuring helium to ensure that Technical Specification limits are met. It also clarifies that mixed loadings of different assembly types or subtypes within a single Transportable Storage Cask are acceptable. Amendment No. 17 and revisions to Amendment Nos. 0 through 16 revise the CoC to incorporate changes to the design basis for the MAGNASTOR[supreg] storage system to correct an error with M5 fuel cladding material yield strength that was introduced in CoC No. 1031, Amendment No. 14 and the associated revisions to Amendment Nos. 0 through 13.",
    "agency": "Nuclear Regulatory Commission",
    "commentsCloseOn": "2026-07-31",
    "daysUntilClose": 30,
    "url": "https://www.federalregister.gov/documents/2026/07/01/2026-13261/list-of-approved-spent-fuel-storage-casks-nac-international-inc-magnastorsupreg-storage-system"
  },
  "source": {
    "url": "https://www.federalregister.gov/documents/2026/07/01/2026-13261/list-of-approved-spent-fuel-storage-casks-nac-international-inc-magnastorsupreg-storage-system",
    "api": "federalregister.gov"
  }
}