5. High Activity Sealed Sources (HASS)

Source: Ionactive Resources

HASS - High Activity Sealed Source

HASS means High Activity Sealed Source. HASS in the UK came into force as the: ‘High-activity Sealed Radioactive Sources and Orphan Sources Regulations 2005’. These regulations only applied to very high activity sources (e.g. for Cs-137 the activity needs to exceed 20GBq) – typically those found in irradiators and radiography equipment. Users of such sources need to apply much more stringent security procedures and prove that they have the funds to dispose of such sources at the end of their useful life.

HASS
is now superseded by The Environmental Permitting (England and Wales) Regulations 2016 in England and Wales (which covers the same conditions from within Schedule 23). In Scotland, the Environmental Authorisations (Scotland) Regulations 2018 deal with HASS, and in Northern Ireland the Radioactive Substances Act (1993) deals with radioactive substances but the High-activity Sealed Radioactive Sources and Orphan Sources Regulations 2005 are still in force.

Drop and RUN !

HASS source DROP and RUN

HASS - Drop and RUN !

The ultimate paradox, of course, is that even though we're all going to die, we've all got to live in the meantime…

– Brian Cox -