Effect of gas flow in the insulating annulus on fuel channel temperatures in a severe accident in a CANDU reactor
Description
The effect of gas flow in the insulating annulus on fuel channel temperatures in a severe accident in a CANDU reactor is analyzed. Results show that pressure tube and fuel temperatures following a severe accident could be reduced considerably using this approach. It is not necessary to provide cooling of the recirculated gas after passage through the fuel channel annulus, since the calculated temperature reductions of fuel bundles and pressure tubes result almost entirely from the improved conductance of the heat flow path to the moderator rather than from heat transport by the helium gas. The technical feasibility and economic justifications for the modification have not been assessed in this study. Such an assessment obviously would be needed before any further conclusions can be reached about this modification
Additional details
Publishing Information
- Imprint Title
- Proceedings of the Canadian Nuclear Society 7. annual conference
- Imprint Pagination
- 321 p.
- Journal Page Range
- p. 163-167.
- Report number
- INIS-mf--12911
Conference
- Title
- Canadian Nuclear Society 7. annual conference.
- Dates
- 9-10 Jun 1986.
- Place
- Toronto, ON (Canada).
INIS
- Country of Publication
- Canada
- Country of Input or Organization
- Canada
- INIS RN
- 22069670
- Subject category
- S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- A CODES; CANDU TYPE REACTORS; CARBON DIOXIDE; FUEL CHANNELS; GAS COOLING; GAS FLOW; HEAT FLUX; HELIUM; HIGH TEMPERATURE; I CODES; LOSS OF COOLANT; NITROGEN
- Descriptors DEC
- ACCIDENTS; CARBON COMPOUNDS; CARBON OXIDES; CHALCOGENIDES; COMPUTER CODES; COOLING; ELEMENTS; FLUID FLOW; HEAVY WATER MODERATED REACTORS; NONMETALS; OXIDES; OXYGEN COMPOUNDS; POWER REACTORS; PRESSURE TUBE REACTORS; RARE GASES; REACTOR ACCIDENTS; REACTOR CHANNELS; REACTOR COMPONENTS; REACTORS; THERMAL REACTORS