ASTM-C833 2008(Redline)

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C833-01(2008) Standard Specification for Sintered (Uranium-Plutonium) Dioxide Pellets (Redline)

Published By	Publication Date	Number of Pages
ASTM	2008	7

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Category: ASTM

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Description

Abstract

This specification covers finished sintered and ground (uranium-plutonium) dioxide pellets for use in thermal reactors. It applies to uranium-plutonium dioxide pellets containing plutonium additions up to 15 % weight. The diversity of manufacturing methods shall be recognized by which uranium-plutonium dioxide pellets are produced and the many special requirements for chemical and physical characterization that may be imposed by the operating conditions to which the pellets will be subjected in specific reactor systems. The following are different chemical requirements that shall be determined: uranium content, plutonium content, impurity content, stoichiometry, moisture content, gas content, and americium-241 content. Nuclear requirements such as isotopic content, plutonium equivalent at a given date, equivalent boron content, and reactivity shall also be determined. Physical properties of the pellets like dimensions, density, grain size, pore morphology, plutonium-oxide homogeneity, plutonium-oxide particle size, plutonium-oxide particle distribution, integrity, and surface cracks shall be determined as well. The surfaces of finished pellets shall be visually free of loose chips, oil, macroscopic inclusions, and foreign materials. An estimate of the fuel pellet irradiation stability shall be obtained unless adequate allowance for such effects are factored into the fuel rod design. The estimate of the stability shall consist of either conformance to the thermal stability test as specified in the or by adequate correlation of manufacturing process or microstructure to in-reactor behavior, or both.

This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

1. Scope

1.1 This specification covers finished sintered and ground (uranium-plutonium) dioxide pellets for use in thermal reactors. It applies to uranium-plutonium dioxide pellets containing plutonium additions up to 15 % weight. This specification may not completely cover the requirements for pellets fabricated from weapons-derived plutonium.

1.2 This specification does not include ( 1 ) provisions for preventing criticality accidents or ( 2 ) requirements for health and safety. Observance of this specification does not relieve the user of the obligation to be aware of and conform to all applicable international, federal, state, and local regulations pertaining to possessing, processing, shipping, or using source or special nuclear material. Examples of U.S. government documents are Code of Federal Regulations Title 10, Part 50Domestic Licensing of Production and Utilization Facilities; Code of Federal Regulations Title 10, Part 71Packaging and Transportation of Radioactive Material; and Code of Federal Regulations Title 49, Part 173General Requirements for Shipments and Packaging.

1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.4 The following safety hazards 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 and health practices and determine the applicability of regulatory limitations prior to use.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

C698 Test Methods for Chemical, Mass Spectrometric, and Spectrochemical Analysis of Nuclear-Grade Mixed Oxides ((U, Pu)O2) C753 Specification for Nuclear-Grade, Sinterable Uranium Dioxide Powder C757 Specification for Nuclear-Grade Plutonium Dioxide Powder, Sinterable C859 Terminology Relating to Nuclear Materials C1165 Test Method for Determining Plutonium by Controlled-Potential Coulometry in H2SO4 at a Platinum Working Electrode C1204 Test Method for Uranium in Presence of Plutonium by Iron(II) Reduction in Phosphoric Acid Followed by Chromium(VI) Titration C1206 Test Method for Plutonium by Iron (II)/Chromium (VI) Amperometric Titration C1233 Practice for Determining Equivalent Boron Contents of Nuclear Materials E105 Practice for Probability Sampling of Materials

ANSI Standard

ANSI/ASMENQA-1 Quality Assurance Requirements for Nuclear Facility Applications

U.S. Government Documents

CodeofFederalRegulat General Requirements for Shipments and Packaging

Keywords

light water reactors; mixed oxide fuel; nuclear fuel; plutonium; plutonium disposition; thermal reactors; uranium-plutonium oxide; Nuclear materials/applicat

Additional information

Standard Title	C833-01(2008) Standard Specification for Sintered (Uranium-Plutonium) Dioxide Pellets (Redline)
Published Code	ASTM
Publication Date	2008
Pages Count	7

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ASTM-C833 2008(Redline)

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