6 Arrestment plant for new non-domestic furnaces.E+W+S
(1)A furnace other than a domestic furnace shall not be used in a building—
(a)to burn pulverised fuel; or
(b)to burn, at a rate of 45.4 kilograms or more an hour, any other solid matter; or
(c)to burn, at a rate equivalent to 366.4 kilowatts or more, any liquid or gaseous matter,
unless the furnace is provided with plant for arresting grit and dust which has been approved by the local authority or which has been installed in accordance with plans and specifications submitted to and approved by the local authority, and that plant is properly maintained and used.
(2)Subsection (1) has effect subject to any exemptions prescribed or granted under section 7.
(3)The Secretary of State may by regulations substitute for any rate mentioned in subsection (1)(b) or (c) such other rate as he thinks fit: but no regulations shall be made so as to reduce any rate unless a draft of the regulations has been laid before and approved by each House of Parliament.
(4)Regulations under subsection (3) reducing any rate shall not apply to a furnace which has been installed, the installation of which has been begun, or an agreement for the purchase or installation of which has been entered into, before the date on which the regulations come into force.
(5)If on any day a furnace is used in contravention of subsection (1), the occupier of the building shall be guilty of an offence and liable on summary conviction to a fine not exceeding level 5 on the standard scale.