105 CMR 120.364
Records of Quarterly Inventory
(A) Each licensee or registrant shall maintain records of the quarterly inventory of sources of
radiation, including devices containing depleted uranium as required by 105 CMR 120.316 and
retain each record for five years.
(B) The record must include the date of the inventory, name of the individual conducting the
inventory, radionuclide, number of becquerels (curies) or mass (for DU) in each device, location
of sources of radiation and/or devices, and manufacturer, model, and serial number of each
source of radiation and/or device, as appropriate.
120.365 Utilization Logs
Each licensee and registrant shall maintain current logs of the use of each source of radiation.
The logs shall include:
(A) A unique identification (e.g., serial number) of each radiation machine, each radiographic
exposure device in which a sealed source is located, and each sealed source;
(B) The name of the radiographer using the source of radiation;
(C) The location(s) where each source of radiation is used and dates of use; and,
(D) The date(s) each source of radiation is removed from storage and returned to storage. For
fixed installations, the date(s) each source of radiation is energized or used and the number of
exposures made. Utilization logs may be kept on form MRCP 120.300-2, Utilization Log, or on
clear, legible records containing all the information required by 105 CMR 120.365(A) through
(D). Copies of utilization logs shall be maintained for Agency inspection for five years. The
records shall be kept at the location specified by the license or certificate of registration.