Materials evaluation in the WERF (Waste Experimental Reduction Facility) low-level radioactive waste incinerator off-gas system

Technical Report · Mon Aug 01 04:00:00 EDT 1988

OSTI ID:6647775

Smolik, G R; Dalton, J D

Performances of alloys in a low-level radioactive, combustible waste incinerator were evaluated. Test coupons and an extracted heat exchanger tube were examined to provide information on alloy behavior in the off-gas system of this facility. Type 316 stainless steel, the alloy of which the heat exchanger is constructed, was most extensively examined. Coupons exposed upstream of the heat exchanger exhibited high temperature corrosion rates of /approximately/100 mpy (incinerator operation time). The rate observed from the heat exchanger tube was lower, /approximately/25 mpy. A 10 year lifetime would be expected based upon this mode of attack and continued similar operating parameters and waste composition. Other alloys were tested to identify potential replacement candidates. Alloys displaying lower metal loss rates at the location upstream of the heat exchanger included HDA 8727 (7 mpy), Alloy 800H (37 mpy), Haynes 230 (50 mpy), and Type 310 stainless steel (63 mpy). The relatively long term exposures (spanning over 4250 hrs of operation) and controlled waste composition makes this information pertinent to the waste incineration community as well as the WERF program. 15 refs., 18 figs., 11 tabs.

• Research Organization: EG and G Idaho, Inc., Idaho Falls (USA)
• DOE Contract Number: AC07-76ID01570
• OSTI ID: 6647775
• Report Number(s): EGG-WM-8181; ON: DE89004869
• Country of Publication: United States
• Language: English

Related Subjects

052001* -- Nuclear Fuels-- Waste Processing
053000 -- Nuclear Fuels-- Environmental Aspects
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
36 MATERIALS SCIENCE
360105 -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
AUSTENITIC STEELS
CHROMIUM ALLOYS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
CORROSIVE EFFECTS
EVALUATION
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HIGH ALLOY STEELS
INCINERATORS
IRON ALLOYS
IRON BASE ALLOYS
LOW-LEVEL RADIOACTIVE WASTES
MANAGEMENT
MATERIAL SUBSTITUTION
MATERIALS
MATERIALS TESTING
MOLYBDENUM ALLOYS
NICKEL ALLOYS
RADIOACTIVE MATERIALS
RADIOACTIVE WASTE DISPOSAL
RADIOACTIVE WASTES
STAINLESS STEEL-310
STAINLESS STEEL-316
STAINLESS STEELS
STEEL-CR25NI20
STEELS
TEMPERATURE DEPENDENCE
TESTING
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES