放射性物质容器长期储存的设计与技术考虑因素.pdf

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1、DESIGN AND TECHNOLOGY CONSIDERATIONS FOR LONG-TERM STORAGE OF RADIOACTIVE MATERIALS CONTAINERSGARY R.CANNELL FLUOR CORPORATIONMARIE GILLESPIE CPCCo/FLUOR MSRadWaste SummitSavannah,GAJune 10 13,2025INTRODUCTIONSELECT INSERT HEADER&FOOTER TO EDIT2Impact of a failed,national disposal plan for radioacti

2、ve waste materials Materials being stored in containers with a typical 40-year design life Storage is local typically at the facility where the materials were produced Containers not designed for extended storage which could be for hundreds of years We are then left to“manage”these containers to pro

3、tect against age-related degradationWhat is being done to address the situation the lack of a viable repository Developing data and information to manage environmental degradation DOE,National Labs,NRC,EPRI,Utilities,etc.Working to develop an interim storage plan consolidated interim storage facilit

4、y(CISF)We are“figuring things out”as we goThe DOE Hanford Site has developed innovative designs/practices for canister aging managementHANFORD LONG-TERM STORAGE CONTAINERSSELECT INSERT HEADER&FOOTER TO EDIT3Unique design and fabrication of radioactive materials storage containers Hanford Cs/Sr capsu

5、les will be transferred from wet pool to dry storage Capsules will be packaged into dry-storage canisters Storage term:300 years this is the driver for what Hanford has doneHANFORD LONG-TERM STORAGE CONTAINERSSELECT INSERT HEADER&FOOTER TO EDIT4Design features Corrosion resistant materials Stainless

6、 Steel,316L vs.304L Expanded annulus(canister/liner)for in-service inspection Alignment of air vents with canister longitudinal weld seamsFabrication features Minimization of weld heat input Limits on number and type of weld repairs Limits on grinding,stress-inducing practicesAll fabrication weldmen