128
Workshop
Service
where on- gines are not made.
Workshop service
other than
fitting or ereering.
THE HONGKONG GOVERNMENT GAZETTE, MARCH 11, 1910.
of a watch on the main engines or boilers of a foreign-going steamship of not less than 99 nominal horse-power; or (2.) have served at sea for 18 months, with a Second Class Certi- tificate of Competency or service, as First Engineer of a home trade steamer of not less than 99 nominal horse-power; or 2 years as Second Engineer of a home trade steamer of not less than 99 nominal horse-power, with a Second Class Certificate of Competency; or
(3.) have served 2 years, with a Second Class Certificate of Competency or service, as Third Engineer of a home trade. steamer of not less than 99 nominal horse-power, if, during the whole of that period he has been the Senior Engineer in charge of a watch on the main engines and boilers; or (4.) possess, or be entitled to, a First Class Certificate of Service. (b.) He will be required to make an intelligible hand sketch, or a work- ing drawing of some one or more of the principal parts of a steam-engine, and to mark in, without a copy, all the necessary dimensions in figures, so that the sketch or drawing could be worked from.
(e.) He must also be able to take off and culculate indicator diagrams. (d.) He must be able to calculate safety-valve pressures, and the strength.
of the boiler shell, stays, and riveting.
(e) He must be able to state the general proportions borne by the prin- cipal parts of the machinery to each other, and to calculate the direct stress, the torsional stress, and the bending stress in round bars, and the direct stress and the bending stress in rectangular bars with given loads.
(f) He must be able to explain the method of testing and altering the setting of the slide valves, and to sketch about what difference any alteration in the slide valve will make in the indicator dia- gram, and also the method of testing the fairness of shafts, and of adjusting them.
(7.) He must be conversant with surface condensation, superheating,
and the working of steam expansively.
(1.) His knowledge of arithmetic must include the mensuration of superficies and solids and the extraction of the square and cube root, and the application of these rules to questions relating to the power, duty, and economy of engines and boilers, and to the stresses in rods, shafts, and levers of the engine.
(4) He must understand the construction of, and be able to maintain in working condition the auxiliary machinery which is placed under his charge, viz.: refrigerating machinery, electric light engines, and dynamos, electric motors fitted to ships' boats, hydraulic machinery, and the various descriptions of steering engines, &c.
21. When the workshop service has been performed in a place where steam engines are not made or required, and the class of work done is similar to that required in engine making, the service may be accepted with an additional year of qualifying service; that is, four years' workshop service and two years in the engine room (of which one year must have been at sea), or one year at engine fitting in a suitable marine engine workshop and one year at sea in the engine roon. The approval of the Harbour Master must be obtained in every such case
before the candidate is examined.
22. When the workshop service has been performed in a place where engines are made, and the department in which the applicant has been principally engaged is not "fitting or erecting", the case must be specially considered. If the service be such as is useful training for an Engineer, the service may be accepted, but in every such case the applicant must prove additional engine room or marine engine workshop service as required above.
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