Posting

Areas in which industrial radiography is being performed shall be posted conspicuously in accordance with 105 CMR 120.200 including: (A) Radiation Areas. Each radiation area shall be posted conspicuously with a sign or signs displaying the radiation symbol and the words: CAUTION (OR DANGER) RADIATION AREA Radiation Area means any area, accessible to individuals, in which radiation levels could result in an individual receiving a dose equivalent in excess of 0.05 mSv (0.005 rem) in one hour at 30 centimeters from the source of radiation or from any surface that the radiation penetrates. (B) High Radiation Area. Each high radiation area shall be posted conspicuously with a sign or signs displaying the radiation symbol and the words: CAUTION (OR DANGER) HIGH RADIATION AREA High Radiation Area means an area, accessible to individuals, in which radiation levels could result in an individual receiving a dose equivalent in excess of one mSv (0.1 rem) in one hour at 30 centimeters from any source of radiation or from any surface that the radiation penetrates. (C) Ropes and/or barriers shall be used as necessary to prevent unauthorized entry to radiation areas. (D) Notwithstanding the requirements of 105 CMR 120.242(A), each radiation area may be posted in accordance with 105 CMR 120.242(B), i.e., High Radiation Area warnings may be placed at the periphery of the controlled area.