U.S. Nuclear Regulatory Commission
Question 224: 10 CFR 20.1903 (a) gives exemptions to
posting "caution signs" under certain conditions. Since 10
CFR 20.1902 specifies "danger" signs, instead of caution
signs, (e.g., "grave danger, very high radiation area"), do
the exemptions in 10 CFR 20.1903 apply to these "danger"
areas as well?
Answer: No. The authorization to use only the term
"danger" (vice "caution") for a very high radiation area
provides emphasis to the potential hazards. There are no
exemptions in the code for posting a very high radiation
area. Since a high radiation area does not require using
the term "danger," the exemption would apply to this area
if the conditions of 10 CFR 20.1903 (a) are met.
(Reference: 10 CFR 20.1903, 10 CFR 20.1902)