The US Army Nuclear Power Program (ANPP) was a program to develop small PWR and BWR nuclear power reactors for use in remote sites. A pressurized water reactor (PWR) is a type of nuclear power reactor that uses ordinary (light) water for both coolant and for neutron moderator. ... A boiling water reactor (BWR) is a light water reactor design used in some nuclear power stations. ... A nuclear reactor is a device in which nuclear chain reactions are initiated, controlled, and sustained at a steady rate (as opposed to a nuclear explosion, where the chain reaction occurs in a split second). ...

Eight reactors were built in all.

• SM-1, 2 MWe. Fort Belvoir, VA, first criticality 1957 (several months before the Shippingport Reactor) and the first US nuclear power plant to be connected to an electrical grid.
• SM-1A, 2 MWe, plus heating. Fort Greely, Alaska. First criticality 1962.
• PM-2A, 2 MWe, plus heating. Camp Century, Greenland. First criticality 1961.
• PM-1, 1.25 MWe, plus heating. Sundance, Wyoming. Owned by the Air Force, used to power a radar station. First criticality 1962.
• PM-3A, 1.75 MWe, plus heating. McMurdo Sound, Antarctica. Owned by the Navy. First criticality 1962, decommissioned 1972.
• MH-1A, 10 MWe, plus fresh water supply to the adjacent base. Mounted on the Sturgis, a barge converted from a Liberty ship, and moored in the Panama Canal Zone. Installed 1968, removed on cessation of US zone ownership in 1975 (the last of the eight to permanently cease operation).
• SL-1, BWR, 200kWe, plus heating. Idaho Reactor Testing Station. First criticality 1958. Site of the only fatal accident at a US nuclear power reactor, on January 3 1961, which destroyed the reactor.
• ML-1, first closed cycle gas turbine. Designed for 300 kW, but only achieved 140 kW. Operated for only a few hundred hours of testing before being shut down in 1963.

Key to the codes: The Mil Mi-1 (originally known to US intelligence as the Type-32 and later by the NATO reporting name Hare) was a Soviet three-seat light utility helicopter. ... Fort Belvoir is a census-designated place located in Fairfax County, Virginia. ... The Shippingport power plant, located on the Ohio River in Beaver County, Pennsylvania about 25 miles from Pittsburgh was the first commercial nuclear power plant built in the United States. ... Wikiquote has a collection of quotations by or about: United States Wikinews has news related to this article: United States United States government CIA World Factbook Entry for United States House. ... Fort Greely is a census-designated place located in Southeast Fairbanks Census Area, Alaska. ... Sundance is a town located in Crook County, Wyoming. ... Categories: Antarctica geography stubs | Geography of Antarctica | Ross Dependency ... Sturgis can refer to: Sturgis, Saskatchewan Sturgis, Kentucky Sturgis, Michigan Sturgis, Mississippi Sturgis, South Dakota This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ... The Liberty ships were cargo ships built in the United States during World War II. They were cheap and quick to build, and came to symbolize U.S. wartime industrial output. ... Map of the Panama Canal Zone The Panama Canal Zone was a 553 mile² (1,432 km²) territory inside of Panama, consisting of the Panama Canal and an area extending 5 mi (8. ... The SL-1, the Stationary Low-Power Reactor Number One, was a U.S. experimental military nuclear power reactor. ... ML-1 was an experimental reactor built as part of the US Army Nuclear Power Program. ...

• First letter: S - stationary, M - mobile, P - portable.
• Second letter: H - high power, M - medium power, L - low power.
• Digit: Sequence number.
• Third letter: A indicates field installation.

Of the eight built in all, six produced operationally useful power for an extended period.

See Also

nuclear power plant
list of nuclear reactors A nuclear power plant in Cattenom, France. ... List of nuclear reactors is a comprehensive annotated list of all the nuclear reactors of the world, sorted by country. ...