ASTM C776-17(2022)

Standard Specification for Sintered Uranium Dioxide Pellets for Light Water Reactors

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STANDARD published on 1.7.2022

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The information about the standard:

Designation standards: ASTM C776-17(2022)
Publication date standards: 1.7.2022
SKU: NS-1068715
The number of pages: 4
Approximate weight : 12 g (0.03 lbs)
Country: American technical standard
Category: Technical standards ASTM

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Fissile materials

Annotation of standard text 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)

Additional information

1. Scope

1.1?This specification is for finished sintered UO₂ pellets. It applies to UO_{1.2?This
specification recognizes the presence of reprocessed U in the fuel
cycle and consequently defines isotopic limits for
UO_{1.3?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.

2. Referenced Documents

C1233-15(2021)	Standard Practice for Determining Equivalent Boron Contents of Nuclear Materials
E105-21	Standard Guide for Probability Sampling of Materials
ANSI/ASME NQA-1	Quality Assurance Requirements for Nuclear Facility Applications
C696-19	Standard Test Methods for Chemical, Mass Spectrometric, and Spectrochemical Analysis of Nuclear-Grade Uranium Dioxide Powders and Pellets
C996-20	Standard Specification for Uranium Hexafluoride Enriched to Less Than 5 % 235U
C753-16a(2021)	Standard Specification for Nuclear-Grade, Sinterable Uranium Dioxide Powder (Includes all amendments and changes 10/22/2021).
C859-24	Standard Terminology Relating to Nuclear Materials

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