Hazards associated with electromagnetic fields are:

  • exposure to magnetic fields, which can cause biological effects, although the nature of such effects is subject to debate, as research is at a comparatively early stage

  • interference with cardiac pacemakers, which can lead to their malfunction

  • use of cryogenic liquids to cool large magnets — often there is an outer jacket of liquid nitrogen and an inner coolant of liquid helium.

Persons at Risk

The following are at risk from electromagnetic equipment in the laboratory.

  • All laboratory staff.

  • Cleaners.

  • Visitors.

Risk Rating

The risks are as follows, as given under guidance in BS 8800.



Magnetic fields

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