Section 144-220-G-C-70 - Surveys for ambient radiation dose rateA. In addition to the surveys required by Part D, a licensee shall survey with a radiation detection survey instrument at the end of each day of use. A licensee shall survey all areas where unsealed radioactive material was prepared for use or administered.B. A licensee does not need to perform the surveys required by G.70.A in an area(s) where patients or human research subjects are confined when they cannot be released under G.75.C. A licensee shall conduct the surveys required by G.70.A and B so as to able to measure dose rates as low as 1 microsievert (0.1 mrem) per hour.D. A licensee shall establish dose rate action levels for the surveys required by G.70.A and G.70.B and shall require that the individual performing the survey immediately notify the radiation safety officer if a dose rate exceeds an action level.E. A licensee shall survey for removable contamination each week of use all areas where radioactive materials are prepared for use, used, administered or stored.F. A licensee shall conduct the surveys required by G.70.E so as to be able to detect contamination on each wipe sample of 33.3 becquerels (2000 dpm) for restricted areas and 3.33 becquerels (200 pdm) for unrestricted areas.G. A licensee shall establish removable contamination action levels for the surveys required by G.70.E and shall require that the individual performing the survey immediately notify the radiation safety officer if contamination exceeds action levels.H. A licensee shall retain a record of each survey in accordance with G.2070.10-144 C.M.R. ch. 220, § G-C-70