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At the present rate of progress the whole of Greater London
should be subject to Smoke Control Orders by 1978
Measurement of the Reducing Effects of the Atmosphere
The Department have co-operated with the Central Electricity
Generating Board by fixing some equipment adjacent to the
inlet pipe of the volumetric sulphur dioxide apparatus sited in
the Environmental Health Section. This equipment which deals
with the measurement of the reducing effects of the atmosphere
consists of a wall mounting unit with a zinc reference can placed
on the unit and exposed to the atmosphere.
Conversion to Natural Gas
Whilst on the subject of Clean Air one of the main topics of
conversation in the community — not only because it is an
approved smokeless fuel but because of the large scale
conversions which are now taking place in the Borough and its
general implications on our environmental conditions — is the
conversion of various domestic appliances from town to natural
gas. In this connection I feel that the following notes kindly
supplied by North Thames Gas will go a long way to reassure
the general public about change over to natural gas and what
this entails from the consumers point of view:—
"There are many thousands of customers in the Borough
and for ease of working conversion areas are sub-divided
into small manageable sectors that can be isolated from the
existing town gas distribution supply and fed with natural gas.
Each sector will vary in geographical size and the
number of. customers which may include schools, factories,
hospitals, etc. as well as domestic dwellings, has so far
been limited to a maximum of about 1,000 customers. Each
sector is numbered and first survey and then actual conversion
is carried out progressively sector by sector until
the whole of the area is changed over from town gas' to
natural gas.
Survey
Some 20 weeks or so prior to conversion of a given area
on a progressive basis sector by sector, a personal letter
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