Singapore legislation
Section 39
Section 39
Air receivers
(1)
Every air receiver and its fittings shall be of sound construction and properly maintained.
(2)
Every air receiver shall —
have marked upon it, so as to be plainly visible, the safe working pressure;
in the case of a receiver connected with an air compressing plant, either be so constructed as to withstand with safety the maximum pressure which can be obtained in the compressor, or be fitted with a suitable reducing valve or other suitable appliance to prevent the safe working pressure of the receiver being exceeded;
be fitted with a suitable safety valve so adjusted as to permit the air to escape as soon as the safe working pressure is exceeded;
be fitted with an accurate pressure gauge indicating the pressure in the receiver;
be fitted with a suitable appliance for draining the receiver (except a receiver in which substance in the form of solid or liquid is stored and from which it is forced by compressed air);
be provided with a suitable manhole, handhole or other means which will allow the interior to be thoroughly cleaned; and
where there is more than one receiver in use in the factory, bear a distinguishing mark which shall be easily visible.
(3)
For the purpose of subsection (2), relating to safety valves and pressure gauges, any set of air receivers supplied with air through a single pipe may be treated as one receiver but in the case where a suitable reducing valve or other suitable appliance to prevent the safe working pressure being exceeded is required to be fitted, this subsection shall not apply unless the valve or appliance is fitted on the single pipe.
(4)
Every air receiver shall be thoroughly cleaned and examined at least once in every 24 months except that in the case of a receiver of solid drawn construction, if it is so constructed that the internal surface cannot be thoroughly examined, a suitable hydraulic test of the receiver shall be carried out in lieu of internal examination.
(5)
The Chief Inspector may, if he thinks fit, by certificate in writing authorise subject to any conditions specified in the certificate, a period exceeding 24 months within which the examination under subsection (4) is to be made.
(6)
Every examination and test referred to in subsection (4) shall be carried out by an authorised boiler inspector, and a report of the result of every such examination and test, in the prescribed form and containing the prescribed particulars (including particulars of the safe working pressure), shall be prepared in duplicate and signed by the person making the examination. One copy of the report shall be handed to the occupier of the factory and the other copy shall be sent to the Chief Inspector.
(7)
No air receiver which has previously been used shall be taken into use in any factory for the first time in that factory until it has been examined and reported on in accordance with subsection (6); and no new air receiver shall be taken into use unless there has been obtained from the Chief Inspector a certificate specifying the safe working pressure of the receiver and stating the nature of the tests to which the receiver and fittings have been submitted, and the certificate is kept available for inspection and the receiver is so marked as to enable it to be identified as the receiver to which the certificate refers.
(8)
Any occupier of a factory who for the purposes of this section desires that an examination or test of an air receiver should be carried out by an authorised boiler inspector who is an inspector shall notify the Chief Inspector accordingly and, on payment by such occupier of the prescribed fee, the Chief Inspector shall instruct such an authorised boiler inspector to carry out the examination.
(9)
No air receiver shall be charged from the cylinder of an internal combustion engine.