High-temperature corrosion in the off-gas system of a radioactive waste incinerator

Conference · Thu Jan 01 04:00:00 EST 1987

OSTI ID:7032691

Jenkins, C F; Peters, J J

Corrosion in a low-level radioactive waste incinerator off-gas system at the Department of Energy's Savannah River Plant is discussed. Severe corrosive attack and failure of an Alloy 600 part exposed to high-temperature (>1000/sup 0/C) gases was observed. Rapid attack of carbon steel components, and cracking of austenitic stainless steel parts also occurred at locations where lower gas temperatures and periodic condensate exposure occurred. Investigation showed HCl, SO/sub 2/, SO/sub 3/ and phosphorus oxides were present and contributed to the failures. Mechanisms of high-temperature failure include alloy separation and reactions with phosphorus. Coupons placed in the incinerator discharge stream have provided information for selection of future materials of construction for the high-temperature system components. Several nickel- and iron-base alloys and a stainless steel with an aluminum diffusion coating were investigated.

• OSTI ID: 7032691
• Report Number(s): CONF-870314-
• Country of Publication: United States
• Language: English

Related Subjects

052002 -- Nuclear Fuels-- Waste Disposal & Storage
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
ALUMINIUM
AUSTENITIC STEELS
CARBON STEELS
CHALCOGENIDES
CHEMICAL REACTIONS
CHROMIUM ALLOYS
COATINGS
COMBUSTION
CORROSION
CORROSION PROTECTION
CORROSION RESISTANCE
CORROSION RESISTANT ALLOYS
CORROSIVE EFFECTS
ELEMENTS
FRACTURE MECHANICS
GASEOUS WASTES
INCINERATORS
IRON ALLOYS
IRON BASE ALLOYS
LOW-LEVEL RADIOACTIVE WASTES
MANAGEMENT
MATERIALS
MECHANICS
METALS
NATIONAL ORGANIZATIONS
NICKEL ALLOYS
NICKEL BASE ALLOYS
NUCLEAR FACILITIES
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PHOSPHORUS COMPOUNDS
PHOSPHORUS OXIDES
PROTECTIVE COATINGS
RADIOACTIVE MATERIALS
RADIOACTIVE WASTE DISPOSAL
RADIOACTIVE WASTE FACILITIES
RADIOACTIVE WASTES
SAVANNAH RIVER PLANT
STAINLESS STEELS
STEELS
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
SULFUR TRIOXIDE
THERMOCHEMICAL PROCESSES
US AEC
US DOE
US ERDA
US ORGANIZATIONS
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES