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U.S. Department of Energy
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INTERIM REFERENCE DESIGN GAS-COOLED, HEAVY-WATER-MODERATED PRESSURE-TUBE REACTOR PROTOTYPE (GCPTR)

Technical Report ·
OSTI ID:4807222
The design concepts of the gas-cooled, heavy-watermoderated, pressure- tube reactor are presented and discussed. The reactor power is 175 Mw thermal and 58 Mw electric, giving a net thermal efficiency of 33.2%. The prototype is designed so that it may be adaptable to a 200 Mw electric output plant that will use natural uranium as a fuel. The first fuel load of the prototype will use slightly-enriched uranium dioxide with stainless steel cladding. High thermal performance (heat rate of 10,300 Btu/kwh) is achieved by operating at a gas outlet temperature of at least 1000 deg F. Good neutron economy results from the use of heavy water as the moderator and the use of core and fuel materials of low neutron cross section. A single-pressure cycle uses a feedwater temperature of 256 deg F and produces steam at 1800 psi/1000 deg F with reheat to 1000 deg F. (N.W.R.)
Research Organization:
General Nuclear Engineering Corp., Dunedin, Fla.
NSA Number:
NSA-16-026594
OSTI ID:
4807222
Report Number(s):
GNEC-74
Country of Publication:
United States
Language:
English