- ZPPR
ZPPR stands for Zero Power Plutonium Reactor, a nuclear reactor located at the
Idaho National Laboratory , Idaho, USA.On April 18, 1969, the Zero Power Plutonium Reactor (later renamed the Zero Power Physics Reactor) went critical for the first time and was put into operation at Argonne-West.
References
*http://www.ne.anl.gov/ne_web_photos/index.php?cid=15&pid=97
Wikimedia Foundation. 2010.