Metalliferous Mines Regulations, 1961 - Directorate General of ...

winding, the end of the rope shall be securely fixed in such a manner that the rope is not unduly strained.
There shall be at least two turns of the rope on the drum when the cage or other means of conveyance is at
its lowest working point in the shaft or winze.
(2)(a) There shall be provided one or more brakes on the drum which :
(i)
(ii)
if there are two cages or other means of conveyance, will hold such cages or other means of
conveyance when the maximum torque is applied in either direction; or
if there is only one cage or other means of conveyance, will hold the loaded cage or other means
of conveyance in midshaft when the maximum torque is applied downwards.
(b) At least one of the brakes shall be so designed that the brake remains at the ‘on’ position except when
operated.
(c) Where the brake or brakes are power-operated, at least one of them shall be arranged to be applied
automatically at all times if the power supply fails. In no case shall a brake be operated by an auxiliary
electric current.
(d) The brake on the drum shall be used only for the purpose of keeping such drum stationary and not for
lowering the cage or other means of conveyance, except in cases where the engine is to be worked at a
very low speed as when examining the winding rope or the shaft or winze.
(3) Where the winding engine is worked by steam or compressed air, a screw stop-valve shall not be used
as controlling valve of the engine.
(4) Every engine shall be equipped with a reliable depth-indicator (in addition to any mark on the rope)
showing to the winding engineman the position of the cage or other means of conveyance in the shaft, and
an automatic device that will ring a bell in the engine room when the ascending cage or other means of
conveyance is at a distance of not less than two revolutions of the drum from the top of the shaft or winze.
The depth-indicator shall be tested after every adjustment or replacement of the winding rope.
83. Shaft fittings – At every winding shaft, other than a shaft in the course of being sunk – to which the
provisions of regulation 87 shall apply – the following provisions shall have effect, namely:
(1)(a) Efficient means shall be provided and maintained for interchanging separate, distinct and definite
signals between the top of the shaft or winze and –
(i)
(ii)
the bottom or other permanent landing of the shaft; and
every inset for the time being in use.
There shall also be provided and maintained efficient means for transmitting such signals from the top of
the shaft to the winding engineman. All signals shall be transmitted by mechanical or electrical means.
(b) In signalling, the following code of signals shall be used and strictly observed :
ONE RAP : STOP
TWO RAPS : LOWER
THREE RAPS : RAISE
FOUR RAPS : MEN ready to ascend or descend
FOUR RAPS : IN REPLY – men may enter the cage or other means of conveyance.
Anyother signals shall be addition to, and shall not interfere with, the foregoing.
Provided that the Chief Inspector may, by an order in writing and subject to such conditions as he
may specify therein, permit the use of any code of signalling other than that specified above.