EFFECT OF TEMPERATURE ON RADIATION-INDUCED CONTRACTION OF REACTOR GRAPHITE

Technical Report · Wed Sep 13 04:00:00 EDT 1961

DOI:https://doi.org/10.2172/4126137· OSTI ID:4126137

Davidson, J M; Helm, J W

Radiation-induced contraction as a function of temperature was studied in needle-like and conventional coke graphites from 450 to 1200 deg C. Fast neutron exposures ranged up to 3.2 x 10/sup 21/ nvt, E) 0.18 Mev, corresponding to approximately 20,000 Mwd/at. in a Hanford graphitemoderated reactor. The results significantly extend information on the effect of high temperature irradiation on needle-like coke graphites manufactured with particle size, impregnation, and graphitization temperature as variables. In general, the transverse contraction rate goes through a broad minimum between the temperatures of 850 and 950 deg C with the least contraction occurring at approximately 800 deg C. Needle coke and CSF graphites show the same effect but the contraction of needle coke graphites is approximately 0.8 that of CSF at all temperatures. In the parallel direction, the rates of contraction are the same for both CSF and needle-coke graphites. (auth)

• Research Organization: General Electric Co. Hanford Atomic Products Operation, Richland, Wash.
• Sponsoring Organization: USDOE
• DOE Contract Number: AT(45-1)-1350
• NSA Number: NSA-18-004302
• OSTI ID: 4126137
• Report Number(s): HW-SA-2274(Rev.)
• Country of Publication: United States
• Language: English

Related Subjects

CARBIDES
EXPANSION
FABRICATION
FAST NEUTRONS
GRAIN SIZE
GRAPHITE
GRAPHITE MODERATOR
HIGH TEMPERATURE
IMPREGNATION
METALS, CERAMICS, AND OTHER MATERIALS
RADIATION DOSES
RADIATION EFFECTS
REACTORS
TEMPERATURE
VARIATIONS