1962-HKRS29-8-29_Part02 — Page 45

Procedure where, on certain

of boiler,

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42. (1) Without prejudice to section 30, where, upon an examina- tion of a boiler or steam receiver for the purposes of section 23, 25, 26, examinations 27 or 32. the appointed examiner who is carrying out the examination or any part thereof is not satisfied as to the condition of any pipe that conveys or may convey steam or water under pressure to or from the boiler or steam receiver or a steam container, be shall notify the Principal Surveyor accordingly.

clo., appointed

examiner

is not

satisfied as to

condition of

setim or

(2) Upon receipt of a notification under subsection (1), the Principal

water pipes. Surveyor may-

Pressure

accumula- tion tests.

(a) require the whole of the lagging surrounding the pipe to be removed in order to enable a thorough examination of the pipe to be made; and

(6) by notice in writing served on the owner of the boiler, steam receiver or steam container for which or in connexion with which the pipe is provided, require him to cause the pipe to be subjected by a boiler inspector to an hydraulic test.

(3) An bydraulic test carried out pursuant to a requirement of the Principal Surveyor made under paragraph (b) of subsection (2) shall be to-

(a) twice the pressure that will be specified in the certificate of fitness as the maximum permissible working pressure of the boiler or steam receiver for which or in connexion with which the pipe is provided; or

(6) the appropriate bydraulic test pressure specified in the current

British Standard Specification.

43. (1) Every pressure accumulation test to which a steam reociver is subjected for the purposes of this Ordinance shall be carried out at the maximum pressure of steam supply to which, with the stop valve or valves fully opened and any other plant or equipment that normally receives a supply of steam from the pipe or pipes supplying the steam receiver shut down, the steam receiver may be subjected when the boiler to which it is connected is being operated at the pressure that is or will be specified in the certificate of fitness issued in respect thereof as its maximum permissible working pressure.

(2) Every pressure accumulation test to which an air receiver is subjected for the purposes of this Ordinance shall be carried out-

(a) at the maximum pressure that can be obtained in the com-

pressor to which the air receiver is connected;

(b) with the reducing valve or valves, or such other appliance as may be used to regulate the supply of compressed air to the air receiver, fully opened; and

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(c) with any other plant or equipment that normally receives a supply of air from the pipe or pipes supplying the air receiver shut down.

44. (1) No bydraulic test of an existing boiler or pressure receiver Hydraulic that is being examined for the purposes of section 23 or of a new boiler tests. or pressure receiver that is being examined for the purposes of section 24 shall be carried out until the maximum permissible working pressure of the boiler or pressure receiver, as the case may be, has been determined in accordance with this Ordinance.

(2) On the completion of an hydraulic test, the boiler, steam receiver or air receiver, as the case may be, shall be further examined by the appointed examiner who carried out the test in order to ascertain the condition of any parts thereof that may have been affected by the hydraulic pressure.

(3) (4) As hydraulic test of a boiler or steam receiver, other than a new boiler or a new steam receiver that is being examined for the purposes of section 24, shall be to one and one-half times the pressure that will be specified in the certificate of fitness as the maximum permissible working pressure of the boiler or steam receiver.

(b) An hydraulic test of a new boiler or steam receiver that is being examined for the purposes of section 24 shall be to one and one-half times the pressure that will be specified in the certificate of fitness as the maximum permissible working pressure of the boiler or steam receiver plus fifty pounds per

square inch.

(4) An hydraulic test of an air receiver shall in every case be twies the pressure that will be specified in the certificate of fitness as the maximum permissible working pressure of the air receiver.

(5) An bydraulic test for the purposes of section 30 or 41 of a pipe that conveys or will or may convey steam or water under pressure shall

(a) in the case of copper pipes, be to twice the pressure that is or will be specified in the certificate of fitness as the maximum permissible working pressure of the boiler or steam receiver, as the case may be, and, in the case of steel pipes, be to three times that pressure; or

(b) in the case of copper pipes or steel pipes, be to the appropriate bydraulic test pressure specified in the current British Standard Specification.