ASTM_C_1066_-_09_2015.pdf

Designation:C106609(Reapproved 2015)Standard Specification forNuclear Grade Zirconium Oxide Pellets1This standard is issued under the fixed designation C1066;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification applies to pellets of stabilized zirco-nium oxide used in nuclear reactors.1.2 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.2.Referenced Documents2.1 ASTM Standards:2C559 Test Method for Bulk Density by Physical Measure-ments of Manufactured Carbon and Graphite ArticlesC859 Terminology Relating to Nuclear MaterialsC1065 Specification for Nuclear-Grade Zirconium OxidePowderE105 Practice for Probability Sampling of Materials2.2 ANSI Standard:3ANSI/ASME NQA-1 Quality Assurance Program Require-ments for Nuclear Facility Applications2.3 U.S.Government Document:4Code of Federal Regulations,Title 10,Part 50Energy(10CFR 50)Domestic Licensing of Production and Utiliza-tion Facilities3.Terminology3.1 Terms shall be defined in accordance with TerminologyC859,except for the following:3.2 buyerthe organization issuing the purchase order.3.3 pelleta fabricated geometric shape of zirconiumoxidehaving a chemical composition as described in Section 4.3.4 pellet lotthe pellets produced from one zirconiumoxide powder lot using one set of process parameters.Pellet lotsize shall be agreed upon between the seller and the buyer.3.5 phase transformationthe rearrangement of the atomicordering of a crystalline lattice as a material is cycled througha critical transformation or inversion temperature.The changefrom one crystalline phase to another may be accompanied bya volume change that could lead to cracks or defects in articlesfabricated from such materials.3.6 powder lota specified quantity of zirconium-oxidepowder with stabilizing additive,blended together such thatsamples taken in accordance with Section 7 can be consideredas representative of the entire quantity.3.7 sellerthe zirconium oxide pellet supplier.3.8 stabilizing additiveA material which,when present insufficient concentration in the subject material exhibiting thephase transformation,produces a stabilized crystalline phasethat does not undergo a transformation or inversion at anytemperature within the expected fabrication or usage regime ofthe manufactured pellet.The potentially deleterious volumechange is therefore avoided.4.Chemical Composition4.1 The starting zirconium oxide powder shall be in accor-dance with Specification C1065.4.2 A stabilizing additive shall be used with the zirconiumoxide.The recommended stabilizing additive is either calciumoxide(CaO)or yttrium oxide(Y2O3).The recommendedadditive concentration in the case of CaO stabilization is 4 to8 weight%.In the case of Y2O3stabilization,the recom-mended additive concentration is 14 to 20 weight%.4.3 Use analytical chemistry methods as agreed upon be-tween the buyer and seller.4.4 The impurity concentration excluding the stabilizingadditives,shall not exceed 0.5 weight%.Individual elementlimits are specified in Table 1.The buyer may specifyadditional limits for any other elements not listed in Table 1.4.5 The moisture concentration is included in the totalhydrogen limit(see Table 1).5.Physical Requirements5.1 Physical Dimensions:1This specification is under the jurisdiction of ASTM Committee C26 onNuclear Fuel Cycle and is the direct responsibility of Subcommittee C26.03 onNeutron Absorber Materials Specifications.Current edition approved Jan.1,2015.Published January 2015.Originallyapproved in 1986.Last previous edition approved in 2009 as C1066 09.DOI:10.1520/C1066-09R15.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.4Available from U.S.Government Printing Office Superintendent of Documents,732 N.Capitol St.,NW,Mail Stop:SDE,Washington,DC 20401,http:/www.access.gpo.gov.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.1.1 Dimensional requirements shall be in accordance withapplicable drawings and purchase order documents.5.1.2 Pellet dimensions shall be measured to ensure com-pliance with the buyers requirements.Sampling plans to meetthe acceptance criteria shall be agreed upon between the buyerand the seller to ensure that the pellets represented by thesample are within the required tolerance.5.2 Density:5.2.1 Pellet density limits shall be specified by the buyer.The incorporation of a stabili