16 Containments for Transportation and Storage of Spent Nuclear Fuel and High-Level Radioactive Material and Waste
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In 1997, the American Society of Mechanical Engineers (ASME) issued the initial version of Division 3 of Section III of the ASME Boiler and Pressure Vessel (BPV) Code. Prior to the publication of Division 3, Section III had only two divisions: Division 1 for metal construction and Division 2 for concrete construction. Division 3 was added to address the containments of nuclear transportation packagings. Hence, the ASME Subgroup responsible for Division 3 has been commonly referred to as “Subgroup NUPACK” even though its official name is the Subgroup on Containment Systems for Spent Fuel and High-Level Waste Transport Packagings. Consistent with current ASME BPV Code practice, the concern of this Division is primarily the integrity of the containment under design, operating, and test conditions. In particular, the structural and leak integrity of the containment is the focus of the Division 3 rules. Subgroup NUPACK is also concerned with aspects of containment closure functionality because the potential for leakage is a key consideration in the containment function of a transport cask or storage containment. Division 3 covers all “construction” aspects of the containment, which is ASME BPV Code terminology that includes administrative requirements, material selection, material qualification, design, fabrication, examination, inspection, testing, quality assurance, and documentation.