L4
CAP. 59]
Factories and Industrial Undertakings (Abrasive Wheels) Regulations
[1975 Ed.
[Subsidiary]
Speeds of spindles.
Provided that when grinding with such an abrasive wheel is not ordinarily carried out in any one room the notice shall be kept posted at a place and in a position where it may easily be read by employees employed in grinding with that abrasive wheel.
(3) No abrasive wheel shall be operated at a speed in excess of the maximum permissible speed in revolutions per minute specified under this regulation for that wheel:
Provided that where the diameter of an abrasive wheel has been reduced its said maximum permissible speed may be increased to that speed which bears the same proportion to the said maximum permissible speed as the original diameter of the abrasive wheel bears to its reduced diameter.
6. (1) There shall be securely affixed to every power driven machine having any spindle on which an abrasive wheel is, or is intended to be, mounted a notice, in English and Chinese, specifying—
(a) in the case of each such spindle (other than a spindle to which sub-paragraph (b) or (c) applies), its maximum working speed;
(b) in the case of any such spindle for which there are provided arrangements for operating the spindle at more than one specific working speed, each specific speed; and
(c) in the case of any such spindle for which there are provided arrangements for operating the spindle at an infinite number of working speeds within a specified range, the maximum and minimum working speeds of the spindle.
(2) No spindle shall, while an abrasive wheel is mounted on it, be operated at a speed in excess of the maximum working speed specified under this regulation for that spindle.
(3) The proprietor of an industrial undertaking shall, when so required by an inspector, provide the inspector with all such facilities and information as are necessary to enable him to determine the working speed of any spindle, shaft, pulley or other appliance which is used to operate an abrasive wheel.
(4) The speed of every air driven spindle on which an abrasive wheel is mounted shall be controlled by a governor or other device so that the speed of the spindle does not at any time exceed the maximum working speed specified for that spindle in accordance with paragraph (1).
(5) Every governor and other device used for controlling the speed of an air driven spindle on which an abrasive wheel is mounted shall be properly maintained.