Ultimately, it is the equipment owner’s responsibility to ensure that x-ray equipment is operating safely. Manufacturers that install x-ray systems usually have a designated Radiation Safety Officer who is responsible for the safe use of the system and for regulatory compliance.
Radiation usage is highly regulated. Those who use x-ray systems follow a host of government regulations, including the UK Ionizing Radiation Regulations 2017 and the American Standard 1020.40 CFR among others, including various international regulations and standards. Several government entities oversee x-ray use: in the United States, the U.S. Food and Drug Administration, for example, has oversight over the production of x-ray systems. Other groups involved in oversight and regulation of x-ray technology include the U.S Nuclear Regulatory Commission, U.S. Department of Agriculture, the U.S. Environmental Protection Agency, the U.S Occupational Health and Safety Administration (for radiation use in the workplace) and state regulatory agencies that work with companies that have installed x-ray machines.