Section 144-220-E-C-8 - Radiation survey instrumentsA. Each licensee and registrant shall keep sufficient calibrated and operable radiation survey instruments at each location where radioactive material and radiation machines are present to make the radiation surveys required by this Part and by Part D. Instrumentation required by this section must be capable of measuring a range from 0.02 millisieverts (2 millirems) per hour through 0.01 sievert (1 rem) per hour.B. The licensee or registrant shall have each radiation survey instrument required under paragraph A of this section calibrated:(1) At intervals not to exceed six months and after instrument servicing, except for battery changes;(2) For linear scale instruments, at two points located approximately one-third and two-thirds of full scale; for logarithmic scale instruments, at mid-range of each decade, and at two points of at least one decade; and for digital instruments, at 3 points between 0.02 and 10 millisieverts (2 and 1000 millirems) per hour; and (3) So that an accuracy within plus or minus 20 percent of the calibration source can be demonstrated at each point checked.(4) By a person licensed or registered by the Agency, another Agreement State, or the NRC to perform such service;(5) At energies appropriate for the licensee's or registrant's use;C. Each radiation survey instrument shall be checked with a radiation source at the beginning of each day of use and at the beginning of each work shift to ensure it is operating properly.D. Each licensee and registrant shall maintain records of the results of the instrument calibrations in accordance with E.26.C.10-144 C.M.R. ch. 220, § E-C-8