Title: Pacific Northwest Laboratory monthly report to Space Nuclear Systems Division for January 1975

At Hanford, strontium will be separated from the high-level waste, then converted to the fluoride, and doubly encapsulated in small, high-integrity containers for subsequent long-term storage. The fluoride conversion, encapsulation and storage will take place in the Waste Encapsulation and Storage Facilities (WESF). This encapsulated strontium fluoride represents an economical source of $sup 90$Sr if the WESF capsule can be licensed for heat source applications under anticipated use conditions. The objectives of this program are to obtain the data needed to license $sup 90$SrF$sub 2$ heat sources and specifically the WESF $sup 90$SrF$sub 2$ capsules. The information needed for licensingmore » can be divided into three general areas: long-term SrF$sub 2$ compatibility data; chemical and physical property data on $sup 90$SrF$sub 2$; and capsule property data such as external corrosion resistance, crush strength, etc. The current program is designed to provide the required information. (auth)« less

At Hanford, strontium will be separated from the high-level waste, then converted to the fluoride, and doubly encapsulated in small, high-integrity containers for subsequent long-term storage. The fluoride conversion, encapsulation and storage will take place in the Waste Encapsulation and Storage Facilities (WESF). This encapsulated strontium fluoride represents an economical source of $sup 90$Sr if the WESF capsule can be licensed for heat source applications under anticipated use conditions. The objectives of this program are to obtain the data needed to license $sup 90$SrF$sub 2$ heat sources and specifically the WESF $sup 90$SrF$sub 2$ capsules. The information needed for licensingmore » can be divided into three general areas: long-term SrF$sub 2$ compatibility data; chemical and physical property data on $sup 90$SrF$sub 2$; and capsule property data such as external corrosion resistance, crush strength, etc. The current program is designed to provide the required information. (auth)« less

At Hanford, strontium will be separated from the high-level waste, then converted to the fluoride, and doubly encapsulated in small, high-integrity containers for subsequent long-term storage. The fluoride conversion, encapsulation and storage will take place in the Waste Encapsulation and Storage Facilities (WESF). This encapsulated strontium fluoride represents an economical source of $sup 90$Sr if the WESF capsule can be licensed for heat source applications under anticipated use conditions. The objectives of this program are to obtain the data needed to license $sup 90$SrF$sub 2$ heat sources and specifically the WESF $sup 90$SrF$sub 2$ capsules. The information needed for licensingmore » can be divided into three general areas: long-term SrF$sub 2$ compatibility data; chemical and physical property data on $sup 90$SrF$sub 2$; and capsule property data such as external corrosion resistance, crush strength, etc. The current program is designed to provide the required information. (auth)« less