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Section 2. (Temporary exemptions from Section 1.) Over
a period of not more than 7 years from the passing of the Act it will
be a defence to prove :—
(a) that the contravention was due to the nature of
the building or equipment and not to failure in
use or maintenance ; and
(b) that it had not been practicable to make the
necessary alterations to prevent the emission of
dark smoke.
On application, the Local Authority may at any time during
the 7 years issue a certificate, renewable annually, stating that they
are satisfied that it had not been practicable to make the necessary
alterations. This certificate can be limited to particular chimneys
of the building.
Departmental duties.
(a) The inspection by a suitably qualified officer of all
premises from which the emission of dark smoke is
observed ;
(b) dealing with applications for certificates of exemption.
Section 3. (Requirement that new furnaces shall be, so far
as is practicable, smokeless). This section requires all new furnaces
(including domestic installations) with a heating capacity of 55,000
or more B.T.Us. per hour to be capable of being operated continuously
without emitting smoke when burning fuel of a type for which
they were designed.
The installation of a new furnace must be notified to the Local
Authority. Plans and specifications for a new furnace may be
submitted to the Local Authority for their approval.
Departmental duties. Advice and assistance when plans for
installation of new furnaces are submitted for approval.
Section 5. (Requirement that grit and dust from furnaces
shall be minimised). Failure to use any practicable means there
may be for minimising emission of grit or dust from any furnace
used to burn solid fuel or solid waste constitutes an offence.
Departmental duties. Advice regarding minimising grit and
dust emission.
Section 6. (Requirement that new furnaces shall be fitted
with plant to arrest grit and dust). This provides that all new