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CHAPTER IV.
ENVIRONMENTAL HYGIENE, FOOD AND WATER,
HOUSING, FACTORIES, ETC.
1. CLEAN AIR ACT, 1956: Section 3.
A dual obligation is imposed upon any person who installs a
new furnace in industrial premises or a new furnace of an output
greater than 55,000 British Thermal Units per hour in domestic
premises,
(a) to install only such a furnace which is, so far as practicable,
capable of being operated continuously without emitting
smoke when burning fuel of the type for which it was
designed, and
(b) to notify the local authority of his intention to install the
furnace.
During the year the Health Department became aware, by notification
or otherwise, of the installation of furnaces, which appear to
meet the requirements of the section, in existing buildings as
follows:—
Factories 8
Houses 39
Commercial premises 3
Section 10.
When the deposited plans for the erection or extension of a
building other than a dwelling, shop or office, include the provision
of a chimney, the local authority must be satisfied that the height of
the chimney will be sufficient to disperse adequately any smoke, grit,
dust or gases emitted from it.
In general, the most significant emissions are likely to be grit
and dust from solid fuel furnaces (including incinerators), and sulphur
dioxide from the combustion of fuel oil. For a new chimney serving
an oil-fired furnace the Health Department recommends that its
weight should be such as to disperse the flue gases sufficiently to
result in an increase of the ground level concentration of SO2 by no
more than 25 p.p.h.m.
During the year the number of new chimneys at industrial
buildings erected in accordance with this recommendation numbered
eight.
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