Singapore legislation
Regulation 31
of Workplace Safety and Health (General Provisions) Regulations
Regulation 31
Air receivers
Subregulation 1
Every air receiver shall be of sound construction and properly maintained.
Subregulation 2
Every air receiver shall —
be conspicuously marked with its safe working pressure;
in the case of a receiver connected with an air compressing plant —
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 from 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;
except in the case of a receiver in which substance in the form of solid or liquid is stored and from which it is forced by compressed air, be fitted with a suitable appliance for draining the receiver;
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 workplace, bear a distinguishing mark which shall be easily visible.
Subregulation 3
For the purpose of paragraph (2)(c) or (d), but subject to paragraph (4), any set of air receivers supplied with air through a single pipe may be treated as one receiver.
Subregulation 4
Where a suitable reducing valve or other suitable appliance to prevent the safe working pressure from being exceeded is required to be fitted on the air receiver, the valve or appliance must be fitted on the single pipe.
Subregulation 5
Subject to paragraph (6) and regulation 31A, every air receiver shall be —
thoroughly cleaned; and
examined by an authorised examiner at least once every 2 years.
Subregulation 6
An authorised examiner may, in his discretion, arrange to make the examination referred to in paragraph (5) within 3 months after the 2 years have expired.
Subregulation 7
[Deleted by S 517/2011 wef 10/09/2011]
Subregulation 8
For the purpose of paragraph (5), where the receiver is of solid drawn construction and is constructed so that the internal surface cannot be thoroughly examined, a suitable hydraulic test of the receiver shall be carried out in lieu of internal examination.
Subregulation 9
It shall be the duty of the owner of an air receiver used in a workplace to comply with paragraphs (1), (2), (4), (5) and (8).
Subregulation 10
It shall be the duty of an authorised examiner to —
issue and sign a report, in a form determined by the Commissioner, of the result of the examination referred to in paragraph (5);
provide a copy of the report referred to in sub-paragraph (a) to the owner of the air receiver; and
inform the Commissioner —
as soon as is reasonably practicable, if the examination shows that the air receiver cannot continue to be used safely unless repairs are carried out; or
in any other case, within 28 days of the completion of the examination, of the results of the examination in a manner acceptable to the Commissioner; and
exercise all due diligence in making any report or in conducting any examination of any air receiver under this regulation.
Subregulation 11
A person must not charge an air receiver used in a workplace from the cylinder of an internal combustion engine.
Subregulation 12
Paragraphs (5) to (8) and (10) shall not apply to any air receiver where the safe working pressure does not exceed 0.5 bar or the product of its safe working pressure and volume does not exceed 100 bar-litre.