ASME BPVC.III.3-2025

Current Revision
2025 ASME Boiler and Pressure Vessel Code, Section III, Division 3, Containment Systems for Transportation and Storage of Spent Nuclear Fuel and High-Level Radioactive Material

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2025 ASME Boiler and Pressure Vessel Code, Section III, Division 3, Containment Systems for Transportation and Storage of Spent Nuclear Fuel and High-Level Radioactive Material

PUBLISH DATE 2025
The purpose of ASME BPVC.III.3-2025 is to define the complete set of mandatory requirements for the design and construction of containment systems for the transportation and storage of spent nuclear fuel and high-level radioactive material.
What It Is Used For This document, also known as ASME Section III, Division 3 (NUPACK), is a specialized part of the Code that governs the safety and integrity of the massive, heavy-walled canisters and casks used to move and store highly radioactive material after it has been removed from a reactor core. This ensures public and environmental safety during the critical phases of waste handling. Its primary uses are:
  • Packaging and Cask Construction: It applies to the design and fabrication of the pressure-retaining components within the spent fuel and high-level waste transport packaging systems. These packages are often called "casks" or "canisters."
  • Extreme Load Certification: The rules in Division 3 are structured to meet the demanding requirements set by regulatory bodies (like the U.S. NRC) for packaging certification. These requirements often involve analysis to demonstrate survival after severe hypothetical accidents, such as:
    • A 30-foot drop onto an unyielding surface.
    • A puncture test (drop onto a steel rod).
    • A thermal test (exposure to fire).
    • A water immersion test.
  • Material and Fabrication Quality: It mandates the use of Code-approved materials, stringent welding controls, and high-level quality assurance to ensure the containment boundary remains intact and leak-tight, preventing the release of hazardous material during transit and storage.
In summary, BPVC.III.3 is the technical rulebook for manufacturing the safeguard containers that ensure nuclear waste can be moved and secured without posing a threat to the public or the environment.
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