DRAGON: GRAPHITE

Journal Article · Fri Jul 01 00:00:00 EDT 1960 · Nuclear Eng.

OSTI ID:4142939

Huddle, R A.U.; Arragon, P A.P.; Price, M S.T.

Nearly the entire core and reflectors of the Dragon 20-Mwh helium-cooled reactor are to be constructed from graphite, which means that several different types of new graphites are needed. The requirements for these graphites are given: (1) high densities on the onder of 2.0 g/cm/sup 3/, (2) low permeabilities on the onder of 10/sup -6/ cm/sup 2//sec, and (3) satisfactory performance at high temperatures up to 1700 tained C. (1) is necessary for reactor economy, and the reason for (2) is the need to delay fission prcduct diffusion thrcugh the fuel box for at least 1 hour. Graphite, a notorious absorber of water vaper, must be completely degassed. The graphite requirements are also discussed on the basis of three separate groups, the outer reflector, the inner removable reflector, and the fuel elements. A graphite has been manufactured for fuel rnd cans, based on Morgaa Crucible' s EY9 and impregnated with furfuryl alcohol; its designation is CYll9. (D.L.C.)

• Research Organization: OEEC High Temperature Reactor Project, AEE, Winfrith, Eng.
• NSA Number: NSA-14-018664
• OSTI ID: 4142939
• Journal Information: Nuclear Eng., Journal Name: Nuclear Eng. Vol. Vol: 5
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

DEGASSING
DENSITY
DIFFUSION
DRAGON
FABRICATION
FISSION PRODUCTS
FUEL CANS
FURFUROL
GAS COOLANT
GASES
GRAPHITE MODERATOR
HELIUM
HIGH TEMPERATURE
IMPREGNATION
ORGANIC COMPOUNDS
PERFORMANCE
POROSITY
REACTOR CORE
REACTOR TECHNOLOGY
REACTORS
REFLECTORS
STANDARDS