HAZARD ASSESSMENT

Isolation from the ingress of substances such as gases, fumes, liquids and other flowing materials must be considered and actioned withinthe permit to work. An effective method is to simply disconnect or remove pipework or ducting or inserting blanks. When using blanks, there must be no possibiltiy of there removal without authorisation therefore suitable locking procedures are required.

Provisions for ventilation – Some con- fined spaces are enclosed by virtue of their design and therefore require mechanical ventilation to provide sufficient breathable air being used up by the occupants or to dilute or remove gases, fumes, vaours etc. from the process. This can be done using blower fans, trunking or an exhaust fan or ejector and trunking.