View report page

period. These periods are extended in the case of
chimneys serving more than one furnace.
(2) No continuous emission of dark smoke (other than that
caused by soot-blowlng) shall exceed 4 minutes; and
(3) No emission of black smoke (i.e. as dark or darker than
shade 4 on the Rlngelmann Chart) shall exceed 2 minutes
in the aggregate in any period of 30 minutes.
In the case of proceedings for discharging dark smoke it
would be a defence to prove that the emission was solely due
(a) to the lighting of a furnace from cold, (b) to some failure
of a furnace or of apparatus, and (c) to the use of unsuitable
fuel when suitable fuel was unobtainable.
Section 2 of the Act also provides a further defence
available until 4th July 1963, if it can be proved that the
emission of dark smoke was due to the nature of the building and
equipment, and not due to failure of proper maintenance and it
had not been practicable to alter or equip the building so as to
enable it to be used for the purpose for which it was intended
without the likelihood of contraventions of Section 1.
Sections 5 to 9 relating to grit and dust from furnaces;
Section 16 - abatement of smoke nuisances; and Section 19 relating
to Railway Engines, also came into operation on the 1st June, 1958.
Smoke Abatement and Atmospheric Pollution
There are but few industrial chimneys in the Borough.
Nine complaints of smoke emission were received and dealt
with during the year, five of these were in respect of bonfires,
three from boiler stacks attached to industrial premises, and
one in respect of an incinerator.
Grit Deposit Measuring Gauges
In conjunction and with the co-operation of the Department
of Scientific and Industrial Research, the grit deposit measuring
gauges have been maintained and samples collected monthly for
analytical examination.
The following is a summary of the results obtained during
the year:-
19