ASTM_C_1062_-_00_2014.pdf

Designation:C106200(Reapproved 2014)Standard Guide forDesign,Fabrication,and Installation of Nuclear FuelDissolution Facilities1This standard is issued under the fixed designation C1062;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 It is the intent of this guide to set forth criteria andprocedures for the design,fabrication and installation ofnuclear fuel dissolution facilities.This guide applies to andencompasses all processing steps or operations beyond the fuelshearing operation(not covered),up to and including thedissolving accountability vessel.1.2 Applicability and Exclusions:1.2.1 OperationsThis guide does not cover the operationof nuclear fuel dissolution facilities.Some operating consider-ations are noted to the extent that these impact upon orinfluence design.1.2.1.1 Dissolution ProceduresFuel compositions,fuel el-ement geometry,and fuel manufacturing methods are subjectto continuous change in response to the demands of newreactor designs and requirements.These changes preclude theinclusion of design considerations for dissolvers suitable forthe processing of all possible fuel types.This guide will onlyaddress equipment associated with dissolution cycles for thosefuels that have been used most extensively in reactors as of thetime of issue(or revision)of this guide.(See Appendix X1.)1.2.2 ProcessesThis guide covers the design,fabricationand installation of nuclear fuel dissolution facilities for fuels ofthe type currently used in Pressurized Water Reactors(PWR).Boiling Water Reactors(BWR),Pressurized Heavy WaterReactors(PHWR)and Heavy Water Reactors(HWR)and thefuel dissolution processing technologies discussed herein.However,much of the information and criteria presented maybe applicable to the equipment for other dissolution processessuch as for enriched uranium-aluminum fuels from typicalresearch reactors,as well as for dissolution processes for somethorium and plutonium-containing fuels and others.The guidedoes not address equipment design for the dissolution of highburn-up or mixed oxide fuels.1.2.2.1 This guide does not address special dissolutionprocesses that may require substantially different equipment orpose different hazards than those associated with the fuel typesnoted above.Examples of precluded cases are electrolyticdissolution and sodium-bonded fuels processing.The guidedoes not address the design and fabrication of continuousdissolvers.1.2.3 Ancillary or auxiliary facilities(for example,steam,cooling water,electrical services)are not covered.Cold chemi-cal feed considerations are addressed briefly.1.2.4 Dissolution PretreatmentFuel pretreatment steps in-cidental to the preparation of spent fuel assemblies for disso-lution reprocessing are not covered by this guide.This exclu-sion applies to thermal treatment steps such as“Voloxidation”to drive off gases prior to dissolution,to mechanical decladdingoperations or process steps associated with fuel elementsdisassembly and removal of end fittings,to chopping andshearing operations,and to any other pretreatment operationsjudged essential to an efficient nuclear fuels dissolution step.1.2.5 FundamentalsThis guide does not address specificchemical,physical or mechanical technology,fluid mechanics,stress analysis or other engineering fundamentals that are alsoapplied in the creation of a safe design for nuclear fueldissolution facilities.1.3 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 Industry and National Consensus StandardsIndustryand national consensus standards applicable in whole or in partto the design,fabrication,and installation of nuclear fueldissolution facilities are referenced throughout this guide andinclude the following:1This guide is under the jurisdiction of ASTM Committee C26 on Nuclear FuelCycle and is the direct responsibility of Subcommittee C26.09 on NuclearProcessing.Current edition approved June 1,2014.Published June 2014.Originallyapproved in 1986.Last previous edition approved in 2008 as C1062 00(2008).DOI:10.1520/C1062-00R14.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 2.2 ASTM Standards:2C1010 GuideforAcceptance,Checkout,andPre-Operational Testing of a Nuclear Fuels ReprocessingFacility(Withdrawn 2001)3C1217 Guide for Design of E