105 CMR 120.261
General Provisions
(A) Each licensee or registrant shall use the SI units becquerel, gray, sievert and coulomb per
kilogram, or the special units curie, rad, rem and roentgen, including multiples and subdivisions,
and shall clearly indicate the units of all quantities on records required by 105 CMR 120.261.
(B) Not withstanding the requirements of 105 CMR 120.261(A), when recording information
on shipment manifests, as required in 105 CMR 120.256, information must be recorded in SI
units or in SI units and special units as specified in 105 CMR 120.261(A).
(C) The licensee or registrant shall make a clear distinction among the quantities entered on the
records required by 105 CMR 120.200, such as, total effective dose equivalent, total organ dose
equivalent, shallow dose equivalent, lens dose equivalent, deep dose equivalent, or committed
effective dose equivalent.