Noun
HWR (plural HWRs)
(nuclear power) Initialism of heavy water reactor.
Coordinate terms: LWR, MSR
Harm within the risk The harm within the risk (HWR) test determines whether the victim was among the class of persons who could foreseeably be harmed, and whether the harm was foreseeable within the class of risks. Source: Internet
The HWR test is no longer much used, outside of New York law. Source: Internet