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ASTM C776-17(2022)
Standard Specification for Sintered Uranium Dioxide Pellets for Light Water Reactors
NORMA vydaná dňa 1.7.2022
Informácie o norme:
Označenie normy: ASTM C776-17(2022)
Dátum vydania normy: 1.7.2022
Kód tovaru: NS-1068715
Počet strán: 4
Približná hmotnosť: 12 g (0.03 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Kategórie - podobné normy:
Anotácia textu normy ASTM C776-17(2022) :
This specification covers sintered uranium dioxide pellets containing 235U for use in nuclear reactors. Chemical requirements include uranium content, impurity content, stoichiometry, and moisture content. Maximum concentration limits are specified for impurity elements such as: aluminum, carbon, calcium+magnesium, chlorine, chromium, cobalt, fluorine, hydrogen, iron, nickel, nitrogen, silicon, and thorium. Chemical analyses shall be performed. Nuclear requirements include isotopic content and equivalent boron content. The following are physical characteristics of the material: dimensions, pellet density, grain size and pore morphology, pellet integrity –
Keywords:
light water reactors, nuclear fuel, nuclear fuel pellets, urania, uranium dioxide ,, ICS Number Code 27.120.30 (Fissile materials and nuclear fuel technology)
Doplňujúce informácie
| 1. Scope | ||||||||||||||
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1.1?This specification is for finished sintered UO2 pellets. It applies to UO1.2?This specification recognizes the presence of reprocessed U in the fuel cycle and consequently defines isotopic limits for UO1.3?This specification does not include (a) provisions for preventing criticality accidents, (1.4?The 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 or 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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