8. Automatic generators of which the decomposing chambers are built
inside the gasholder must not exceed 300 litres per hour productive
capacity.
9. Generators must be arranged so that after-generation cannot produce
objectionable results.
10. The holder of carbide-to-water generators must be large enough to
take all the gas which may be produced by the introduction of one charge
of carbide without undue pressure ensuing.
11. The maximum pressure permissible in any part of the apparatus is 1.1
atmosphere absolute.
12. The temperature in the gas space of a generator must never exceed
80 deg. C.
13. Generating apparatus, &c., must be constructed in a workmanlike
manner of metal capable of resisting rust and distortion, and, where the
metal comes in contact with carbide or acetylene, it must not be one
(copper in particular) which forms an explosive compound with the gas.
Cocks and screw connexions, &c., of brass, bronze, &c., must always be
kept clean. Joints exposed to acetylene under pressure must be made by
riveting or welding except that in apparatus not exceeding 100 litres per
hour productive capacity double bending may be used.
14.
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