Division 5.5 FIRE
United Kingdom
The second indent of section 3.5.2 is mandatory in respect of machinery which comprises highly flammable parts.
The braking system of machinery intended for use in underground workings must be designed and constructed in such a way that it does not produce sparks or cause fires.
Machinery with internal combustion engines for use in underground workings must be fitted only with engines using fuel with a low vaporising pressure and which exclude any spark of electrical origin.