The installations must comply with the following general conditions:
1. No part of the generator when working at its utmost capacity should
attain a temperature of more than 100 deg. C.
2. The carbide must be completely decomposed in the apparatus so that no
acetylene can be evolved from the residue. The residues must be diluted
with water before being discharged into drains or cesspools, and sludge
storage-pits must be in the open.
3. The apparatus must preclude the escape of lime into the gas and water
connexions.
4. Glass parts must be adequately protected.
5. Rubber connexions between the generator, gasholder, and main are
absolutely prohibited with installations supplying more than 30 burners.
6. Cocks must be provided for cutting off the main and connexions from
the generator and gasholder.
7. Each burner must have an independent tap.
8. Generators of groups (_b_), (_c_), and (_d_) must be
constructed so that no after-generation of acetylene can take place
automatically and that any surplus gas would in any case be carried out
of the generator house by a vent-pipe.
The third section deals with generator houses, which must be well
ventilated and light; must not be used for any other purpose except to
store one day's consumption of carbide, not exceeding 300 kilos.
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