105 CMR 120.236
and Control of Licensed or Registered Sources of Radiation
(A) The licensee shall secure licensed radioactive material from unauthorized removal or
access.
(B) The licensee shall maintain constant surveillance, and use devices or administrative
procedures to prevent unauthorized use of licensed radioactive material that is in an unrestricted
area and that is not in storage.
(C) The registrant shall secure registered radiation machines from unauthorized removal.
(D) The registrant shall use devices or administrative procedures to prevent unauthorized use
of registered radiation machines.