<P> The regulations are aimed at employers and are enforced by the Health and Safety Executive (HSE). They form the legal basis for ionising radiation protection in the United Kingdom (UK), although work with ionising radiation is also controlled in the UK through other statutory instruments such as the Nuclear Installations Act 1965 and the Radioactive Substances Act 1993 . </P> <P> The IRR99 make legal requirements including prior authorisation of the use of particle accelerators and x-ray machines, the appointment of radiation protection supervisors (RPS) and advisers (RPA), control and restriction of exposure to ionising radiation (including dose limits), and a requirement for local rules . Local rules including the designation of controlled areas, defined as places where "special procedures are needed to restrict significant exposure". </P> <P> In 2013 the European Union adopted directive 2013 / 59 / Euratom which requires updated Ionising Radiations Regulations to implement the directive in UK law by 2018 . Changes include reduced eye dose limits as a result of updated ICRP recommendations . </P> <P> The regulations impose duties on employers to protect employees and anyone else from radiation arising from work with radioactive substances and other forms of ionising radiation . In the United Kingdom the Health and Safety Executive is one of a number of public bodies which regulates workplaces which could expose workers to radiation . </P>

Explain ionising radiation regulations 1999 for taking dental images in line with best practice