Waste calciner corrosion
Corrosion data derived during the development and operation of the waste calcination process for solidification of aqueous nuclear wastes from reprocessing of nuclear fuels between 1957 and 1977 has been reviewed. Early test results in laboratory and pilot-plant studies led to the selection of Type 347 stainless steel for the first Waste Calcining Facility (WCF) primary calciner vessel and Type 304L and 347 stainless steels for the aqueous feed and scrub systems. Operation history of this unit indicates that these were good choices for construction materials even after changing from aluminum nitrate to zirconium fluoride containing wastes and modification to replace the NaK heating system with ''in-bed'' combustion. Problems encountered during operation have been with fittings such as valves, valve bellows, and feed and fuel nozzles. These problems continue under development with both new designs and materials being investigated and tested. Laboratory corrosion tests and metallurgical data which have led to the selection of Nitronic-50 alloy (an austenitic stainless steel) for use in the aqueous liquid sections of the New Waste Calcining Facility (NWCF) are presented. 10 figures, 47 tables.
- Research Organization:
- Allied Chemical Corp., Idaho Falls, ID (USA). Idaho Chemical Programs - Operations Office
- DOE Contract Number:
- EY-76-C-07-1540
- OSTI ID:
- 6570058
- Report Number(s):
- ICP-1171
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
36 MATERIALS SCIENCE
360105 -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
CALCINATION
CARBON STEELS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CORROSION
CORROSION RESISTANT ALLOYS
DATA
DECOMPOSITION
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
MANAGEMENT
MATERIALS
NICKEL ALLOYS
NUCLEAR FACILITIES
OFF-GAS SYSTEMS
PHASE TRANSFORMATIONS
PROCESSING
PYROLYSIS
RADIOACTIVE WASTE FACILITIES
RADIOACTIVE WASTE PROCESSING
SOLIDIFICATION
STAINLESS STEELS
STEELS
THERMOCHEMICAL PROCESSES
WASTE MANAGEMENT
WASTE PROCESSING