Healthand and Safety Executive Dose limitation Estimated Impacts

Healthand and. Safety Executive Dose limitation – Estimated Impacts James Taylor OEWG Meeting 11 November 2014

DL 1 Establish dose constraints for occupational exposure • Current requirement – dose constraints to be used at the planning stage. • BSS requirement – dutyholders may decide when dose constraints should be used.

HSE estimated impact • Minor – dose constraints usually set at planning stage • Costs – familiarisation only

DL 2 Dose limitation – under 18’s • Current arrangement – doesn’t address dose limits for under 18 s who are not trainees. – Young persons cannot be designated classified persons. • BSS requirement – young persons under 18 cannot carry out work where exposure to ionising radiation is likely. – 6 m. Sv limit applies to apprentices and students working with radiation sources as part of their studies

HSE estimated impact • Minor – unlikely that under 18 s who are not trainees will be in employment. • Costs – familiarisation only

DL 3 Dose limitation – 5 year averaging • Current arrangement – to notify HSE of use of 5 year averaging for whole body dose. • BSS requirement – competent authority to authorise the use of 5 year averaging

HSE estimated impact • Whole body dose – minor, HSE no evidence that five year averaging has ever been used • Eye dose - effects previously considered by OEWG • Costs – whole body dose, familiarisation only.

DL 4 Annual dose limits for occupational exposure • Current arrangements – set dose limits for certain groups such as women of reproductive capacity, medical exposure, and public dose limit for hands, forearms, feet and ankles. • BSS requirement – dose limits for the above groups do not appear within the Directive.

HSE proposal and estimated impact • Proposal – to keep dose limit for medical exposure only (non-comforter and carer). • Impact – none as it is not evident that the dose limits for women of reproductive capacity or for hands, feet etc, are being or have been used. • Costs – none.

DL 5 Dose limits – international issues • New recommendations – IAEA recommend that under 16’s prohibited from incurring occupational exposure.

HSE proposal and estimated impact • Proposal – new regulations to reflect the IAEA recommendation. • Impact – none, unlikely that under 16’s would be working in such an environment. • Costs – none.

DL 6 Occupational dose limit for the lens of the eye • Current arrangements – dose limit is 150 m. Sv in a calendar year. • BSS requirement – dose limit 20 m. Sv in a single year or may be averaged over 5 year period, subject to a maximum dose of 50 m. Sv in a single year.

HSE proposal and estimated impact • To carry out further research to examine the possible effects of the change. • To refine impact assessment developed with OEWG during the negotiation phase.