Radiation supervision for employees

Medical examinations

The population of workers under radiation safety supervision is divided into two groups:

  1. Radiation employees involve with ionizing radiation
    1. Working with devices where there is a tube or other technology that allows work with ionizing radiation. This ionizing radiation is trapped inside the device and is not emitted outside the device and the safety mechanisms in the device do not allow any exposure to the ionizing radiation.
    2. Working with open or sealed radioactive materials at an activity level with an exemption level.
    3. Those responsible for the above devices will be defined as radiation employees and will be required to complete annual radiation safety training.
    4. Those responsible for the devices will provide safety and operation training for other users.
  2. Radiation workers
    1. A worker with radioactive materials and/or a device that emits ionizing radiation is a worker who may be exposed to one-tenth of the annual limit dose (5 mSv/year). Such employee is required to undergo occupational medical examinations and radiation safety training. Some employees will be required for personal monitoring.
    2. Examination by an occupationalphysician: The radiation workers will undergo a medical examination once a year by an occupational physician on behalf of the health fund (Kuppat Holim) in which they are insured. This test is mandatory and includes a general test, bloodand urine test. According to the physician's discretion, the employee will be sent for examination by an ophthalmologist (once every three years or five years). Only the physician is authorized to indicate in the employee's health record whether he is fit to work with ionizing radiation.
  3. Monitoring means for exposure to ionizing radiation
    1. There are two types of personal monitoring
      1. Monitoring exposure to external radiation is performed by personal dosimetry tags. Workers who use high-energy radioactive materials, such as certain isotopes that emit beta radiation (P-32) or devices that emit ionizing radiation, such as X-ray machine operators, will wear dosimetry tags, the tags will be attached to the chest, on the lab coat or apron. 
      2. Radiation monitoring for internal exposure: 
        A test to examine internal contamination as a result of working with open radioactive materials is done by a radio-toxicological urine test or by testing an all-body counter at the Sorek Nuclear Research Center.
        Radio-toxicological urine test kit: the employee receives a kit for taking a sample which includes a plastic container with a sticker on it with his personal details and a plastic bag. The employee must fill the container with urine (at least 400 ml), fill in the details on the sticker, put the container in the plastic bag, and give it to the Radiation Safety Officer. The safety unit sends the container for testing at the national radio-toxicological laboratory at the Sorek Nuclear Research Center.
    2. Dosimetry for environmental monitoring
      1. Dosimetry tags for environmental monitoring should be placed in the vicinity of radiation-emitting devices according to the instructions of the chief radiation inspector at the Ministry of Labor, as well as according to the discretion of the Radiation Safety Officer at the institute.