Section 33: Air receivers

(1) Every air receiver shall-
(a) have marked upon it, so as to be plainly visible, the safe working pressure;
(b) 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;
(c) 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.
(d) be fitted with a correct pressure gauge indicating the pressure in the receiver in kilograms per square centimetre;
(e) be fitted with a suitable appliance for draining the receiver;
(f) be provided with a suitable manhole, hand hole or other means which will allow the interior to be thoroughly cleaned; and
(g) in a case where more than one receiver is in use in the factory, bear a distinguishing mark which shall be easily visible.
(2) For the purpose of subsection (1) of this section relating to safety valves and pressure gauges, any set of air receivers supplied with air though a single pipe may be treated as one receiver; but 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 said single pipe.
(3) Every air receiver and its fittings shall be of sound construction and properly maintained.
(4) Every air receiver shall be thoroughly cleaned and examined at least once in every period of 26 months:
Provided that in the case of a receiver of solid drawn construction-
(a) the person making such examination may specify in writing a period exceeding 26 months but not exceeding four years within which the next examination is to be made; and
(b) 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) Every examination and test shall be carried out by an approved person and a report signed by the person making the examination or test, of the result of every examination and test, in the prescribed form and containing the prescribed particulars (including particulars of the safe working pressure), shall be entered in or attached to the general register and certified true copies of the report and certificate shall be filed with the Director of Factories.
(6) In this section-
"air receiver" means-
(a) any vessel (other than a pipe or coil or an accessory, fitting or part of a compressor) for containing compressed air and connected with an air compressing plant; or
(b) any fixed vessel for containing compressed air or compressed exhaust gases and used for the purpose of starting an internal combustion engine;
"approved person" means any person (whether or not an officer in the civil service of the Federation or of any State) who is approved by the Director of Factories, by certificate in writing, for the purpose of carrying out examinations and tests of air receivers in accordance with, and for the purpose of this section;
"safe working pressure" means the pressure specified in the report of the last examination carried out in accordance with the provisions of this section.
(7) This section shall not apply to any receiver forming part of the plant, machinery or equipment of any ship or to any air receiver on any locomotive, carriage, wagon or other rolling stock used on any railway for the haulage of goods or passengers.