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Buliding Energy
Common Questions

Should I obtain permission before installing a replacement boiler system?
What is dark smoke?
Would dark smoke emitted at night be a problem?
Would dark smoke from a bonfire be a problem?
 
Should I obtain permission before installing a replacement boiler system?
Before installing any new or replacement boiler systems, you should check with the local Council to ensure that the design of the system is approved under the Clean Air Act 1993 and that the height of the chimney is appropriate in order to ensure adequate dispersal of fumes and smoke.
 
What is dark smoke?
Dark smoke is defined in the Clean Air Act as smoke whose density exceeds a standard shading on a chart referred to as the Ringelmann Chart. The chart is used to visually compare the intensity of colour against the printed shadings. Any smoke that is more than light grey in colour could potentially exceed this level and render the person causing the smoke to prosecution.
 
Would dark smoke emitted at night be a problem?
Although it would be difficult for a local Council to prove that dark smoke had been emitted, if the smoke caused complaints, the Council could require measurement devices to be fitted or could take action under Statutory Nuisance.
 
Would dark smoke from a bonfire be a problem?
Burning wastes on commercial and industrial premises is an offence, not only under the Clean Air Act but also under waste management law.  The only circumstances where wastes can be burnt are where a waste management licence or permit is obtained, or where grounds maintenance waste (wood and plant matter) or demolition waste is burned where it was produced at a rate of no more than 10 tonnes in any 24 hours.