333-122-0190 General Requirements for All RGD: Dosimetry Individual Monitoring When required by the Authority: (1) The registrant may not permit any individual to act as a X-ray operator unless, at all times during radiographic operations, each X-ray operator wears, on the trunk of the body, a combination of direct reading dosimeter, and either a film badge, optically stimulated luminescence (OSL) or a thermoluminescent dosimeter (TLD) or other National Voluntary Laboratory Accreditation Program (NVLAP) approved technologies. X-ray operators who only operate cabinet X-ray machines are exempt from the requirement to wear a direct reading dosimeter. (a) Pocket dosimeters must have a range from zero to 2 milliseiverts (200 mrem) and must be recharged at the start of each shift. Electronic personal dosimeters may only be used in place of ion-chamber pocket dosimeters. (b) Each radiation dose measuring device must be assigned to and worn by only one individual. (c) Radiation dose measuring devices must be exchanged at periods not to exceed quarterly. (d) After replacement, each dose measuring device must be returned to the supplier for processing within 14 calendar days of the end of the monitoring period, or as soon as practicable. In circumstances that make it impossible to return each dose measuring device in 14 calendar days, such circumstances must be documented and available for review by the Authority. (2) Direct reading dosimeters such as pocket dosimeters or electronic personal dosimeters, must be read and the exposures recorded at the beginning and end of each shift, and records must be maintained in accordance with OAR 333-122-0201 . (3) Pocket dosimeters, or electronic personal dosimeters, must be checked at periods not to exceed 12 months for correct response to radiation, and records must be maintained in accordance with OAR 333-122-0201. Acceptable dosimeters must read within plus or minus 20 percent of the true radiation exposure. (4) If an individual's pocket dosimeter is found to be beyond the visible scale demarcation, or the electronic personal dosimeter reads greater than 2 milliseiverts (200 mrem), the individual's dose measuring device must be sent for processing within 24 hours. (a) The individual may not resume work associated with the use of sources of radiation until a determination of the individual's radiation exposure has been made. This determination must be made by the radiation safety officer or the radiation safety officer's designee. (b) The results of this determination must be included in the records maintained in accordance with OAR 333-122-0201. (5) If a radiation dose measuring device is lost or damaged, the worker must cease work immediately until a replacement radiation dose measuring device is provided and the exposure is calculated for the period from issuance to loss or damage of the dose measuring device. The results of the calculated exposure and the period for which the radiation dose measuring device was lost or damaged must be included in the records maintained in accordance with OAR 333-122-0201 . (6) Reports received from the radiation dose measuring device processor must be retained in accordance with OAR 333-122-0201 . (7) Finger or wrist dosimetry devices shall be provided to and shall be used by all personnel working with open beam gauging equipment. Statutory/Other Authority: ORS 453.605 – 453.807 Statutes/Other Implemented: ORS 453.605 – 453.807 History: PH 16-2021, adopt filed 04/21/2021, effective 04/21/2021