The current Federal annual occupational radiation exposure limit of 5 rem was established in 1994, which is 27 years after the Naval Nuclear Propulsion Program’s annual exposure limit of 5 rem per year was adopted in 1967. (Until 1994, the Federal radiation exposure lifetime limit allowed an accumulation of exposure of 5 rem for each year of age beyond 18). From 1968 to 1994, no civilian or military personnel in the Program exceeded its self-imposed 5 rem annual limit, and no one has exceeded that Federal limit since then. In fact, no Program personnel have exceeded 40 percent of the Program’s annual limit from 1980 to 2012 (i.e., no personnel have exceeded 2 rem in any year in the last 33 years). And no civilian or military Program personnel have ever, in almost 60 years of operation, exceeded the Federal lifetime limit.
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