The Fire Safety Regulations (Northern Ireland) 2010

1.  In applying measures to control risks the person with duties under Article 25 or 26 shall, in order of priority—

(a) reduce the quantity of dangerous substances to a minimum;

(b) avoid or minimise the release of a dangerous substance;

(c) control the release of a dangerous substance at source;

(d) prevent the formation of an explosive atmosphere, including the application of appropriate ventilation;

(e) ensure that any release of a dangerous substance which may give rise to risk is suitably collected, safely contained, removed to a safe place, or otherwise rendered safe, as appropriate;

(f) avoid—

(i) ignition sources including electrostatic discharges; and

(ii) such other adverse conditions as could result in harmful physical effects from a dangerous substance; and

(g) segregate incompatible dangerous substances.