Simulation of intergranular attack on Alloy 600 tubing in tubesheet crevices. Final report
Technical Report
·
OSTI ID:5033361
Each model boiler was preconditioned in All-Volatile Chemistry (AVT). One model boiler was then faulted with chemicals typical of a fresh-water condenser leak and simulated plant sludge. The other model boiler was first faulted with caustic, sodium carbonate, and sludge, then sodium carbonate and magnetite. Each model boiler contained seven tubes; tubing included Alloy 600 mill-annealed, cold-drawn, thermally-treated, and sensitized materials. Two different widths of tubesheet crevices were used. The fresh-water-faulted boiler experienced minor pitting and no significant IGA or IGSCC. The caustic-carbonate-faulted boilers experienced throughwall IGSCC and shallow IGA of mill-annealed and mill-annealed plus cold-drawn A600. Plastically deformed A800 (mill-annealed, cold-drawn glass bead peened) were susceptible to transgranular cracking in crevice regions. C-ring specimens in both boilers experienced no significant corrosion. Caustic denting of A508 tubesheets were observed.
- Research Organization:
- Combustion Engineering, Inc., Windsor, CT (USA). Nuclear Power Systems
- OSTI ID:
- 5033361
- Report Number(s):
- EPRI-NP-4272; ON: TI86920020
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210200 -- Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled
36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ALKALI METAL COMPOUNDS
ALLOYS
BOILERS
CARBON COMPOUNDS
CARBONATES
CHALCOGENIDES
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CORROSION
CREVICE CORROSION
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HYDROGEN COMPOUNDS
HYDROXIDES
INCOLOY 800
INCOLOY ALLOYS
INCONEL 600
INCONEL ALLOYS
INTERGRANULAR CORROSION
IRON ALLOYS
IRON BASE ALLOYS
IRON COMPOUNDS
IRON ORES
IRON OXIDES
MAGNETITE
MATERIALS
MINERALS
NICKEL ALLOYS
NICKEL BASE ALLOYS
NIOBIUM ALLOYS
ORES
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
SLUDGES
SODIUM CARBONATES
SODIUM COMPOUNDS
SODIUM HYDROXIDES
STEAM GENERATORS
STRESS CORROSION
TRANSITION ELEMENT COMPOUNDS
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VAPOR GENERATORS
210200 -- Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled
36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ALKALI METAL COMPOUNDS
ALLOYS
BOILERS
CARBON COMPOUNDS
CARBONATES
CHALCOGENIDES
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CORROSION
CREVICE CORROSION
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HYDROGEN COMPOUNDS
HYDROXIDES
INCOLOY 800
INCOLOY ALLOYS
INCONEL 600
INCONEL ALLOYS
INTERGRANULAR CORROSION
IRON ALLOYS
IRON BASE ALLOYS
IRON COMPOUNDS
IRON ORES
IRON OXIDES
MAGNETITE
MATERIALS
MINERALS
NICKEL ALLOYS
NICKEL BASE ALLOYS
NIOBIUM ALLOYS
ORES
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
SLUDGES
SODIUM CARBONATES
SODIUM COMPOUNDS
SODIUM HYDROXIDES
STEAM GENERATORS
STRESS CORROSION
TRANSITION ELEMENT COMPOUNDS
TUBES
VAPOR GENERATORS