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Standard Specification for Sintered Gadolinium Oxide-Uranium Dioxide Pellets for Light Water Reactors
NORMA vydaná dňa 1.1.2021
Označenie normy: ASTM C922-21
Dátum vydania normy: 1.1.2021
Kód tovaru: NS-1017630
Počet strán: 4
Približná hmotnosť: 12 g (0.03 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
This specification covers finished pellets composed of sintered gadolinium oxide-uranium dioxide of any concentration for use in light-water reactors. Materials shall adhere to specified chemical (impurity content, stoichiometry, moisture content, and gadolinium oxide concentration), nuclear (isotopic content), and physical (dimensions, density, homogeneity, integrity, axial and circumferential surface cracks, cylindrical surface chips, pellets ends, cleanliness and workmanship, identification, and irradiation stability) requirements.
Keywords:
burnable poison, gadolinia, light water reactors, nuclear fuel, nuclear fuel pellets, urania, uranium dioxide,, ICS Number Code 27.120.30 (Fissile materials and nuclear fuel technology)
1. Scope | ||||||||||||||||||||||
1.1?This specification is for finished sintered (U,Gd)O2 pellets. It applies to (U,Gd)O1.2?This specification recognizes the presence of reprocessed U in the fuel cycle and consequently defines isotopic limits for (U,Gd)O1.3?This specification does not include (a) provisions for preventing criticality accidents, (1.4?UnitsThe values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.5?The following precautionary caveat pertains only to the technical requirements portion, Section 4, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6?This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
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2. Referenced Documents | ||||||||||||||||||||||
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