Scram as the original and mostly likely accurate basis for the use of scram in the technical context. A persistent alternative explanation posits that scram is an acronym for 'safety control rod axe man', which was supposedly coined by Enrico Fermi when the world's first nuclear reactor was built under the spectator seating at the University of Chicago's Stagg Field. It could also stand for "Safety Control Rods Activation Mechanism" or "Control Rods Actuator Mechanism". Both of these are probably backronyms from the original, non-technical usage. In any reactor, a SCRAM is achieved by inserting large amounts of negative reactivity mass
Enrico Fermi Nuclear Generating Station "We Almost Lost Detroit", was written by local Detroit newsman John Grant Fuller (subtitled "This Is Not A Novel" to point out that it was not a work of fiction). The song "We Almost Lost Detroit", by Gil Scott-Heron is also about the Fermi 1 meltdown. Fermi 2 is a 1,198 MWe General Electric boiling water reactor owned and operated by DTE Energy. Plans to build were announced in July 1968. Initial criticality was achieved in July 1985, and full commercial operation commenced on January 23, 1988. The reactor vessel holds 764 fuel assemblies and 185 control rods which modulate