Coal water mixture development. Quarterly technical progress report

Technical Report · Fri Oct 11 04:00:00 EDT 1985

OSTI ID:5110685

Five runs with the Spi-Wear radio-assay system to measure material losses of irradiated pipe components were completed in August 30, 1985. The Spi-Wear system is an in-situ real-time monitoring technique that would provide important information concerning the nature and dynamics of coal-water mixtures (CWM) corrosion/erosion. CWM from the fourth delivery of the long term test slurry was utilized in all five runs. This slurry remained extremely stable when recirculated in the test loop with the progressive cavity pump during all five runs. Assessment of the corrosion/erosion data collected in the CWM test loop using wear plugs and corrosometer probes indicates very little corrosion/erosion during the long term tests. Typical corrosion/erosion rates for carbon steel were less than 10 mils per year, or comparable to rates caused by water corrosion. Metallographic examination of selected test coupons and wear plugs also revealed lack of corrosion for a carbon steel test coupon placed in a static CWM environment, and only limited pitting corrosion on carbon steel test coupons and wear plugs placed in the CWM test loop. The calculated corrosion rate for these test coupons and wear plugs is approximately 5 mils per year. The plans for next quarter are to disassemble selected plant components for detailed inspection, and to continue evaluation of the data collected during the long term equipment performance tests. 17 figs.

• Research Organization: TRW Space and Technology Group, Redondo Beach, CA (USA)
• DOE Contract Number: AC22-82PC50270
• OSTI ID: 5110685
• Report Number(s): DOE/PC/50270-T12; ON: DE86002495
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
013000 -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
42 ENGINEERING
420205 -- Engineering-- Transport & Storage Facilities-- (1980-)
ALLOYS
CARBON STEELS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
CORROSION
CORROSIVE EFFECTS
DISPERSIONS
ENERGY SOURCES
FOSSIL FUELS
FREIGHT PIPELINES
FUEL SLURRIES
FUELS
HYDROGEN COMPOUNDS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MIXTURES
OXYGEN COMPOUNDS
PIPELINES
PIPES
PUMPS
RADIOASSAY
SLURRIES
SLURRY PIPELINES
STEELS
SUSPENSIONS
TESTING
WATER