Babylon NG
The world's best online dictionary

Download it's free

Definition of Heavy water moderated reactor

Heavy water moderated reactor Definition from Science & Technology Dictionaries & Glossaries
NRC Nuclear Energy Glossary
A reactor that uses heavy water as its moderator. Heavy water is an excellent moderator and thus permits the use of unenriched uranium as a fuel.
A service to the public by The U.S. Nuclear Regulatory Commission (NRC).
EIA Energy Glossary
A reactor that uses heavy water as its moderator. Heavy water is an excellent moderator and thus permits the use of inexpensive natural (unenriched) uranium as fuel.
Source: Energy Information Administration, 2006
Heavy water moderated reactor Definition from Encyclopedia Dictionaries & Glossaries
English Wikipedia - The Free Encyclopedia
A pressurized heavy-water reactor (PHWR) is a nuclear reactor, commonly using unenriched natural uranium as its fuel, that uses heavy water (deuterium oxide D2O) as its coolant and neutron moderator. The heavy water coolant is kept under pressure, allowing it to be heated to higher temperatures without boiling, much as in a pressurized water reactor. While heavy water is significantly more expensive than ordinary light water, it creates greatly enhanced neutron economy, allowing the reactor to operate without fuel-enrichment facilities (offsetting the additional expense of the heavy water) and enhancing the ability of the reactor to make use of alternate fuel cycles.

See more at Wikipedia.org...
© This article uses material from Wikipedia® and is licensed under the GNU Free Documentation License and under the Creative Commons Attribution-ShareAlike License
Heavy water moderated reactor Definition from Society & Culture Dictionaries & Glossaries
Environmental Engineering (English ver.)
A nuclear reactor that uses heavy water as its moderator. Heavy water is an excellent moderator and thus permits the use of inexpensive (unenriched) uranium as a fuel.