Hanford waste encapsulation: strontium and cesium
The strontium and cesium fractions separated from high-radiation-level wastes at Hanford are converted to the solid strontium fluoride and cesium chloride salts, doubly encapsulated, and stored underwater in the Waste Encapsulation and Storage Facility. A capsule contains approximately 70,000 Ci (2.59 PBq) of /sup 137/Cs or 70,000 to 140,000 Ci (2.59 to 5.18 PBq) of /sup 90/Sr. Materials for fabrication of process equipment and capsules must withstand a combination of corrosive chemicals, high radiation dosages, and, frequently, elevated temperatures. The two metals selected for capsules, Hastelloy C-276 for strontium fluoride and Type 316L stainless steel for cesium chloride, are adequate for prolonged containment. Additional materials studies are being done both for licensing strontium fluoride as source material and for second-generation process equipment.
- Research Organization:
- Atlantic Richfield Hanford Co., Richland, WA
- OSTI ID:
- 7129668
- Journal Information:
- Nucl. Technol.; (United States), Journal Name: Nucl. Technol.; (United States) Vol. 32:1; ISSN NUTYB
- Country of Publication:
- United States
- Language:
- English
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ALKALI METAL ISOTOPES
ALKALINE EARTH ISOTOPES
ALLOYS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CAPSULES
CESIUM 137
CESIUM ISOTOPES
CHROMIUM ALLOYS
COMPATIBILITY
CONTAINERS
CORROSION RESISTANT ALLOYS
EVEN-EVEN NUCLEI
HAPO
HASTELLOY C
HASTELLOYS
HEAT RESISTING ALLOYS
INTERMEDIATE MASS NUCLEI
IRON ALLOYS
IRON BASE ALLOYS
ISOTOPES
MANAGEMENT
MOLYBDENUM ALLOYS
NATIONAL ORGANIZATIONS
NICKEL ALLOYS
NICKEL BASE ALLOYS
NUCLEI
ODD-EVEN NUCLEI
PROCESSING
PRODUCTION
RADIOACTIVE WASTE PROCESSING
RADIOACTIVE WASTE STORAGE
RADIOISOTOPES
SEPARATION PROCESSES
STAINLESS STEEL-316L
STAINLESS STEELS
STEELS
STORAGE
STRONTIUM 90
STRONTIUM ISOTOPES
TUNGSTEN ALLOYS
US AEC
US ERDA
US ORGANIZATIONS
WASTE MANAGEMENT
WASTE PROCESSING
WASTE STORAGE
YEARS LIVING RADIOISOTOPES