The Leak-Tightness of Demountable Flange Assemblies using Soft Iron Gaskets. Dragon Project Report
Description
The vacuum leak-tightness of demountable flange assemblies, 5 inches in diameter, has been investigated experimentally over a range of temperatures to a maximum of 600°C. The seal was formed by using a 2 inch diameter soft iron gasket 0.018 inch thick half-trapped between two stainless steel flanges having sealing lips 0.005 inch high machined on their faces. No difficulty was experienced in achieving a leakage rate as low as 0.1 clusec at temperatures below 450°C. Between 450°C and 600°C it was found necessary to use ''Nimonic 80'' bolts because of the problem of creep. Under these conditions the leakage rate at 600°C was approximately 3 clusec. Attempts have been made to estimate the effect of gas pressure on the leakage rate of gases from pressurised systems.
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Additional details
Publishing Information
- Imprint Pagination
- 46 p.
- Report number
- DP-R--28
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 54027920
- Subject category
- S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
- Descriptors DEI
- APPROXIMATIONS; CREEP; FEDERAL REPUBLIC OF GERMANY; FLANGES; FORSCHUNGSZENTRUM JUELICH; GASES; HTGR TYPE REACTORS; IRON; NIMONIC; STAINLESS STEELS
- Descriptors DEC
- ALLOYS; CALCULATION METHODS; CARBON ADDITIONS; DEVELOPED COUNTRIES; ELEMENTS; EUROPE; FLUIDS; GAS COOLED REACTORS; GERMAN FR ORGANIZATIONS; GRAPHITE MODERATED REACTORS; HIGH ALLOY STEELS; IRON ALLOYS; IRON BASE ALLOYS; MECHANICAL PROPERTIES; METALS; NATIONAL ORGANIZATIONS; NICKEL ALLOYS; NICKEL BASE ALLOYS; REACTORS; STEELS; TRANSITION ELEMENT ALLOYS; TRANSITION ELEMENTS; WESTERN EUROPE
Optional Information
- Notes
- Document from Juelich Preservation Project; 6 refs., 10 figs.