Nuclear Safety
Definitions of Criticality Safety
Protection against the consequences of an inadvertent nuclear chain reaction, preferably by prevention of the reaction. — ANSI/ANS-8.1-1998
The art of avoiding a nuclear excursion. — Hugh Paxton
The art and science of not building a nuclear reactor without shielding, coolant, and control — Francis Alcorn
Definitions of a Criticality Safety Engineer
One who, typically by trial and error, realizes that one can not intuitively predict the change in reactivity by any change in any nuclear parameter. — Chris Miller