Download Use of Fume Cupboards

Use of Fume Cupboards
Fume cupboards should be used to handle substances that are harmful/irritant/toxic by inhalation
where COSHH assessment calls for mechanical ventilation. For example, chemicals such as glacial
acetic acid, xylene, concentrated HCl and methanol.
Fume cupboards are not suitable for handling Hazardous Biological Agents and should not be used.
The control panel for the Fume Cupboard Airflow is situated either on the wall next to the fume
cupboard or on the fume cupboard itself. Familiarise yourself with its location prior to use. Fume
cupboards must be switched on at all times.
Check that the fans are switched on and operating properly before starting work.
The airflow gauge should be in the green section or equivalent. Work should not be carried out in a
hood with restricted air flow. Work should be carried out with the sash in the lowest position
practical. If the sash is too high for safe operation the ‘sash high’ alarm sounds and it should be
lowered to a level where the alarm stops.
The ‘sash mute’ button must only be used to allow access for large items.
If any alarm sounds while work is in progress, stop and check the control panel to see what the
problem is.
If the sash is too high, rectify and continue working. If the fans are not working or the airflow is in
the red section the ‘air fail’ indicator will illuminate and it is not safe to proceed.
Report any defects immediately to the Technical Services Manager.
Should it be necessary to leave items unattended ensure that they are adequately labelled.
Do not use fume hoods as storage areas. Keep them clean and tidy & wipe up after use.