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3 of the Clean Air Act, 1956 in respect of new furnace/boiler
installations and in each case the determination of chimney
heights under Section 10 of the Act was also dealt with. In the
latter case four chimney heights were agreed but alterations
were required in two instances.
THE CLEAN AIR (MEASUREMENT OF GRIT AND DUST)
REGULATIONS, 1968
These Regulations, which came into operation on 1st May
1968, prescribed the requirements — including the provision
of sampling points in a chimney — which must be observed
by occupiers of buildings in which certain furnaces are situated
who, under the Clean Air Acts, 1956 and 1968 are directed
by the local authority to make and record measurement of the
grit and dust emitted from the furnace.
These Regulations will, therefore, be applied during the
“submission of plans” stage to new plant of a capacity equivalent
to 100— 50,000 lbs/hr. Our existing liaison with the Building
Control Section of the Director of Technical Services will enable
this additional commitment to be carried out as a routine measure.
CLEAN AIR
Another important administrative feature during the year in
connection with smoke control areas was the fact that direct
electric space heaters became eligible for grant in smoke control
areas.
Grants for electric fires were withdrawn some years ago
because it was feared that their use would encourage the demand
for electricity at peak times when there was a shortage of
capacity. Now there is ample capacity to meet all loads, and
the Ministry of Housing and Local Government say that they are
satisfied that this class of appliance no longer imposes strain
on the country's electricity supply system.
Electric storage radiators using 'off peak' electricity have
always been included in the list of appliances eligible for grant
under the Clean Air Act and they will, of course, continue to
do so.
Grants for direct electric space heaters up to £18 may now
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