Hong Kong Regulations

FACTORIES AND INDUSTRIAL UNDERTAKINGS (ABRASIVE WHEELS) REGULATIONS - REGULATION 5

Speeds of abrasive wheels

PART II

DUTIES OF PROPRIETORS

(1) No abrasive wheel having a diameter of more than 55 millimetres shall be
taken into use in any industrial undertaking for the first time in that
industrial undertaking after the coming into operation of these regulations
unless the abrasive wheel or its washer is clearly marked, in English or
Chinese, with the maximum permissible speed in revolutions per minute
specified by the manufacturer of that wheel.

(2) No abrasive wheel having a diameter of 55 millimetres or less shall be
taken into use in any industrial undertaking for the first time in that
industrial undertaking after the coming into operation of these regulations
unless there is kept permanently fixed in the room in which grinding is
ordinarily carried out with that wheel a notice, in English and Chinese,
stating the maximum permissible speed in revolutions per minute specified by
the manufacturer for that abrasive wheel or for abrasive wheels of the class
to which that abrasive wheel belongs and, in the case of mounted wheels and
points, the overhang permissible at that speed: 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.