steam-generating heavy-water reactor: meaning, definition, pronunciation and examples
Very LowTechnical/Specialized
Quick answer
What does “steam-generating heavy-water reactor” mean?
A nuclear reactor that uses heavy water (deuterium oxide) as its moderator and coolant, and is specifically designed to produce steam for electricity generation or industrial use.
Audio
Pronunciation
Definition
Meaning and Definition
A nuclear reactor that uses heavy water (deuterium oxide) as its moderator and coolant, and is specifically designed to produce steam for electricity generation or industrial use.
A specialized type of pressurized heavy water reactor (PHWR) where the primary function is the efficient production of steam, often via heat exchangers or steam generators, distinguishing it from reactors optimized for other purposes like plutonium production. The design emphasizes thermal efficiency for power grids.
Dialectal Variation
British vs American Usage
Differences
No significant regional variation in the term itself, as it is a precise technical designation. However, the reactor technology (CANDU) is primarily associated with Canadian design, with international variants.
Connotations
Technologically sophisticated, associated with mid-20th century nuclear development, and carries implications of high capital cost and specialized fuel cycles.
Frequency
Extremely rare in general discourse. Frequency would be marginally higher in countries with operating heavy-water reactor fleets (e.g., Canada, India, Romania, South Korea).
Grammar
How to Use “steam-generating heavy-water reactor” in a Sentence
The [country/company] operates a steam-generating heavy-water reactor.[Noun/Process] is facilitated by a steam-generating heavy-water reactor.A steam-generating heavy-water reactor uses [material].Vocabulary
Collocations
Examples
Examples of “steam-generating heavy-water reactor” in a Sentence
verb
British English
- The plant is designed to steam-generate using a heavy-water moderator.
- The reactor will steam-generate for the district heating system.
American English
- The facility steam-generates power for the regional grid.
- It was built to steam-generate efficiently with natural uranium.
adverb
British English
- [Not typically used as an adverb]
American English
- [Not typically used as an adverb]
adjective
British English
- The steam-generating heavy-water technology is mature.
- We reviewed the steam-generating heavy-water design documents.
American English
- The steam-generating heavy-water model underwent testing.
- There are specific regulations for steam-generating heavy-water facilities.
Usage
Meaning in Context
Business
Used in energy sector reports, investment analyses for nuclear power projects, and utility company documentation.
Academic
Found in nuclear engineering textbooks, journal articles on reactor design, and comparative studies of energy systems.
Everyday
Virtually never used. Might appear in detailed news reports about a specific nuclear facility.
Technical
Core term in nuclear engineering specifications, safety protocols, regulatory filings, and technical manuals for reactor operation.
Vocabulary
Synonyms of “steam-generating heavy-water reactor”
Strong
Neutral
Weak
Vocabulary
Antonyms of “steam-generating heavy-water reactor”
Watch out
Common Mistakes When Using “steam-generating heavy-water reactor”
- Incorrect hyphenation: 'steam generating heavy water reactor' (missing hyphens).
- Word order: 'heavy-water steam-generating reactor' (changes technical emphasis).
- Misunderstanding: Assuming it's a boiler attached to any reactor, rather than an integral design feature.
FAQ
Frequently Asked Questions
Most CANDU reactors are steam-generating heavy-water reactors, but not all heavy-water reactors are designed with steam generation as the primary focus (some are for research or production). 'CANDU' is a specific Canadian design lineage.
Heavy water (D₂O) is a much more efficient neutron moderator. This allows the reactor to sustain a fission chain reaction using natural uranium, which is not possible in standard light-water reactors, thus avoiding expensive fuel enrichment.
Primary advantages are fuel flexibility (can use natural uranium, thorium), high neutron economy, and the ability to be refueled online without shutting down, leading to high operational availability.
Key disadvantages include the high cost of producing heavy water, potential for tritium leakage (a radioactive isotope of hydrogen), generally larger physical size for equivalent power output, and complexities in handling the heavy water moderator/coolant.
A nuclear reactor that uses heavy water (deuterium oxide) as its moderator and coolant, and is specifically designed to produce steam for electricity generation or industrial use.
Steam-generating heavy-water reactor is usually technical/specialized in register.
Steam-generating heavy-water reactor: in British English it is pronounced /stiːm ˌdʒenəreɪtɪŋ ˌhevi ˈwɔːtə riˈæktə/, and in American English it is pronounced /stim ˌdʒenəreɪtɪŋ ˌhevi ˈwɔːt̬ɚ riˈæktɚ/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “[No common idioms exist for this highly technical term]”
Learning
Memory Aids
Mnemonic
Think: **S**team **G**oes **H**ome **W**ith **R**eactor. (SGHWR was an actual, related British reactor type.)
Conceptual Metaphor
A KETTLE FOR ATOMS: A highly controlled, industrial-scale kettle where nuclear fission boils heavy water to spin turbines.
Practice
Quiz
What is the primary function that distinguishes a 'steam-generating' heavy-water reactor from other heavy-water reactors?