What are the requirements before an elevator may be used?
(17.1.1) No elevator shall be used unless a prescribed permit for its use has been issued by the principle inspector of mines.
What are the requirements before an elevator may be used for the conveyance of persons?
(17.1.2) No elevator shall be used for the conveyance of persons unless it is permitted by a prescribed permit for such elevator.
Describe the requirements for the application for a permit?
(17.2.1) The manager of a mine or works who intends to install, use or modify an elevator shall apply in writing to the principle inspector of mines on the form obtainable from him.
Give the information that shall accompany the application for an installation of an elevator?
(17.2.2) The application for the installation and use of an elevator shall be accompanied by:
- Dimensioned drawings of the machine room in plan and elevation to the scale of at least 1 in 50.
- Dimensioned drawings of the installation in plan and elevation.
- A diagram of all the electrical circuits of the installation.
The following particulars of the ropes and their connections-
Name of manufacturer:
- Date of manufacture.
- Coil number.
- Mass/m.
Construction of rope:
- Type of lay.
- Number of strands.
- Class of heart.
Construction of strands:
- Number of wires.
- Diameter of wires.
- Class of core.
- Class of steel in wires.
- Tensile strength of steel.
- Breaking force.
- Rope test certificate number and place of test.
- Purpose of use.
- Date put in.
- Dates of recapping, shortening or turning end for end.
- Date taken off.
- Factor of safety (static).
What procedure shall be followed if any permit is lost, defaced or destroyed?
(17.2.5) If any permit is lost, defaced or destroyed the manager shall apply in writing to the principle inspector of mines for the issue of a duplicate permit. Un-cancelled revenue stamps of R50 must be attached to the application.
Where shall the permit for the use of the elevator be kept?
(17.2.6) The permit shall be displayed in a glazed and locked or sealed frame in a conspicuous place inside the car or any other place approved by the principle inspector of mines.
Who shall supply the manager of an elevator inspection register book and who shall record the results of such inspections?
(17.3.1) The principle inspector of mines shall supply an inspection register book.
The principle inspector of mines shall record the results of each of his examinations. The manager shall keep the register in a safe place at the mine.
What procedure shall be followed if the inspection register is lost, defaced or destroyed?
(17.3.3) If the register is lost, defaced or destroyed the manager shall apply in writing to the principle inspector of mines for the issue of a duplicate register. Un-cancelled revenue stamps of R100 must be attached to the application.
Who shall supply an elevator record book?
(17.3.4) The manager.
What shall be entered into the elevator record book?
(17.3.4)
a) The names of the competent persons carrying out the examinations.
b) The following particulars of every winding rope and balancing rope:
- Name of manufacturer.
- Date of manufacture.
- Coil number.
- Mass/m.
Construction of rope:
- Type of lay.
- Number of strands.
- Class of heart.
Construction of strands:
- Number of wires.
- Diameter of wires.
- Class of core.
- Class of steel in wires.
- Tensile strength of steel.
- Breaking force.
- Rope test certificate number and place of test.
- Purpose of use.
- Date put in.
- Dates of recapping, shortening or turning end for end.
- Date taken off.
- Factor of safety (static).
c) A true report of every examination and any repairs or alterations made. The report shall be signed by the person who carried out the inspection, repairs or alterations.
What particulars shall be marked inside the car?
(17.4.1) The following particulars shall be marked in a conspicuous place inside the car or in a place the principle inspector of mines may direct:
- The name of the maker.
- The maximum mass of the material or mineral permitted.
- The maximum number of persons permitted.
- The official number allocated to the car.
Describe the requirements where machinery of more than one elevator is installed in the same room?
(17.4.2) Where machinery of more than one elevator is installed in the same room the machinery and switchgear of each elevator shall be distinctly and separately marked.
How shall the driving motor of every elevator be marked?
(17.4.3) The driving motor of every elevator shall be marked to indicate the direction of rotation for upward and downward movement of the car.
Where shall a diagram of the electrical circuit be kept?
(17.4.4) A diagram of all electrical circuits shall be displayed in a suitable frame in the motor room.
Describe the requirements for the inspections/examinations of elevators?
(17.5.1) The manager, engineer or person appointed in terms of regulation 2.13.2, shall appoint competent persons to examine:
Once a week:
- The hatchway, guides, ropes and rope attachments.
- The engine or motor.
- The drums and sheaves, and
- All safety appliances.
(17.5.2) The engineer or competent person appointed in terms of regulation 2.13.2 shall examine carefully:
Once a month:
- The elevator and all its fittings and appliances. At this examination the ropes supporting the elevator car and counterpoise, and the balance ropes or chains shall be thoroughly cleaned at selected places to determine the amount of deterioration thereof.
What are the requirements if any weakness or defect is found?
( 17.5.3) If any weakness or defect is found whereby the safety of any person is or may be endangered the defect shall be reported in writing without delay to the manager or engineer or person appointed in terms of regulation 2.13.2 and no person shall be conveyed until such defect has been rectified.
When shall adequate precautions be taken to prevent any person from using an elevator?
(17.5.4) Adequate precautions shall be taken to prevent any person from using an elevator:
- While it is being operated from the motor room or
- While examination, servicing or any work is being done in the hatchway.
State the requirements to comply with when a landing door or gate is required to be open while an elevator is being examined?
(17.5.5) When a landing door or gate is required to be open while an elevator is being examined, serviced or repaired or while any work is being done in the hatchway, an effective barrier shall be provided and used to prevent inadvertent access to the hatchway.
Explain the duty of the principle inspector of mines before he intends inspecting an elevator?
(17.6.1) When the principle inspector of mines intends inspecting an elevator he shall notify the manager of the date and time of such inspection.
What is the duty of the manager after notification from the principle inspector of mines of an inspection?
(17.6.2) The manager shall cause all ropes and machinery to be thoroughly cleaned and prepared for the inspection.
(17.6.3) The manager shall supply free of charge any workmen, tools and other equipment required.
What shall the manager do if he fails to have an elevator properly prepared for an inspection by the principle inspector of mines and what is the fine?
(17.6.4) The manager shall apply within 7 days of the date on which the inspection should have taken place for a new date and time and shall attach revenue stamps to the value of R250 to his application.
Who shall determine the maximum authorized load of an elevator?
(17.7.1) The principle inspector of mines shall determine the maximum number of persons and the maximum mass of material or mineral that may be conveyed.
May persons travel in an elevator car while material is being conveyed in such car?
(17.7.2) No person other than the operator or attendant shall travel in an elevator car while material is being conveyed in such car except with the written permission of the principle inspector of mines.
May persons travel in an elevator car while mineral is being conveyed in such car?
(17.7.3) No person shall travel in a car while mineral is being conveyed in such car.
May persons travel in an elevator car while material or mineral is being conveyed in a conveyance attached to such car?
(17.7.4) No person shall travel in any car while material or mineral is being conveyed in a conveyance attached to such car.
What are the minimum requirements to qualify as an elevator operator?
(17.8.1) Every elevator shall be under the charge of and operated by a competent person not less than 17 years of age who received training for not less than 6 shifts and who shall be properly instructed in the dangers to the operation of the elevator.
(17.8.5) The above regulation shall not apply to an automatic elevator controlled by a push button.
What are the responsibilities of the operator while operating the elevator?
(17.8.2) No person other than the operator shall operate an elevator.
(17.8.3) The operator shall not absent himself from the elevator during the period he is in charge unless he ensured that it cannot be operated by any unauthorized person.
(17.8.4) The operator shall be responsible for the locking of every door or gate at a landing before the car is moved from the landing. He shall stop to use the elevator should any defect be found whereby the safety of persons is endangered.
(17.8.5) The above regulations shall not apply to an automatic elevator controlled by a push button.
Describe the requirements for a hatchway not enclosed by walls?
(17.9) Access to the hatchway shall be prevented by means of an adequate brattice or grill to a height of at least 2 m. The space above the hatchway landing door or gate shall be closed by bratticing or grill work. A space of not more than 40 mm shall be permitted between any two members of the bratticing or grill work, which shall be maintained in good order.
With what shall every landing entrance to a hatchway be provided with?
(17.10.1) Every landing entrance to a hatchway shall be provided with a substantial door or a shutter-type gate at least 1.8 m in height, the inner surface of which, when closed, shall be flush, as nearly as practicable, with the inside of the hatchway.
May vertical sliding doors be installed at a landing site?
(17.10.2) Vertical sliding doors shall not be fitted at any landing except with the written permission of the principle inspector of mines.
May a door be provided to a hatchway?
(17.10.3) Except at a landing, no door shall be provided to a hatchway unless permitted by the principle inspector of mines and only if such door operates a circuit breaker which prevent the elevator from working while the door is open.
Describe the requirements where a landing door is coupled mechanically to a car door?
(17.10.4) Where a landing door is coupled mechanically to a car door for opening or closing a device shall be provided which automatically retracts the door if it is obstructed in any way. The device shall prevent the force with which the door closes from injuring any person.
What devices shall be provided at every landing entrance to the hatchway of an automatic elevator?
(17.11.1) Every landing entrance to the hatchway of a automatic elevator shall be provided with the following devices, constructed and situated so as to prevent unauthorized access:
- A mechanical lock which operates with a circuit breaker which prevents the car from moving until every landing door is closed and locked and no landing door can be opened unless the car is at that landing.
- An additional circuit breaker that prevents the car from moving until every door is closed.
(17.11.2) These two circuit breakers shall be in two separate control circuits.
(17.11.3) Where a car door is coupled mechanically to a landing door the second circuit breaker is not necessary.
What devices shall be provided at every landing entrance to the hatchway of an elevator controlled by an operator?
(17.11.4)
- A mechanical lock which cannot be opened from the outside unless the car is at rest at the landing.
- A circuit breaker arranged so as to prevent the car from moving until every door is closed and constructed so as to prevent unauthorized access.
When may the door of an elevator car or the landing door be caused to open before the car comes to rest at a landing?
(17.11.5) The door of a elevator car or the landing door may be caused to open before the car comes to rest at a landing if the car is fitted with an automatic levelling device which operates together with devices causing the doors to open when the car enters the levelling zone. The levelling zone may not extent more than 400 mm above or below the landing, the speed of the car in the levelling zone may not exceed 0.2 m/s, an apron of not less than 450 mm must be fitted to the car and where there is levelling it must not be less than 450 mm long.
Describe the requirements for any door or gate opening into the hatchway when not in use?
(17.11.6) Every door or gate opening into the hatchway shall be kept locked when not in use.
Describe the requirements for projections in the hatchway
(17.12)
- Where a car is fitted with a lattice type gate every projection in the hatchway shall be made safe by a levelled approach on the hatchway side facing the opening of the car.
- No bevel shall be less than 70º and the levelled surface shall be covered with a smooth metal.
Describe the requirements of guides for elevators?
(17.13)
- Every car and every counterpoise shall be guided throughout its travel by guides of substantial construction, securely fastened in the hatchway.
- The hatchway construction, the guides and the means of securing the guides, shall be able to withstand the application of the safety catches as well as any other force resulting from the operation of the elevator.
- The bottom of every guide rail shall rest on a secure foundation and shall be fixed securely in that position.
- The top end of the rail shall not be fixed in the ceiling.
- No wooden guide shall be installed if the speed of the car exceeds 0.5 m/s.
- No cast iron or hollow metal guide shall be installed.
- The counterpoise guides shall be enclosed by bratticing from 300 mm above the floor of the hatchway to 2 m above the floor of the hatchway except where a compensating rope is attached to the counterpoise.
Describe the requirements for grating under every sheave?
(17.14) A substantial grating shall be provided with a minimum space of 40 mm between any two pieces directly under each sheave at the top of the hatchway, unless the sheave is separated from the hatchway by a floor of adequate strength.
Describe the requirements for buffers in the hatchway of the elevator installation?
(17.15.1) Every hatchway in which the car operates at a speed of up to 1.8 m/s shall be provided with spring, air or hydraulic buffers.
Every hatchway in which the car operates at a speed exceeding 1.8 m/s shall be provided with hydraulic buffers. The buffers shall be placed either at the bottom of the hatchway directly beneath the car and counterpoise or shall be attached to the bottom of the car and counterpoise.
(17.15.2) Every buffer shall be of substantial construction and the buffers shall be capable of absorbing the energy of a fully loaded car traveling at a speed at which the governor is set.
Describe the requirements for access to the bottom of the hatchway?
(17.16.1) Where a door is fitted to give access to the bottom of the hatchway such door shall operate a circuit breaker preventing the elevator from working while the door is open.
(17.16.2) Where a door is not provided to give access to the bottom of the hatchway and the floor is more than 1.5 m from the landing, a permanently metal ladder shall be provided to give such access.
(17.16.3) One or more manually operated switches, which shall immobilize the elevator, shall be fitted in the hatchway within easy reach from the bottom landing and the floor of the hatchway.
Describe the requirements of the hatchway where two elevators are used in one hatchway?
(17.17) Where two or more cars are used in one hatchway, the bottom of the hatchway for each elevator shall be separated by a wall to a height of at least 2 m above the floor of the hatchway.
What are the minimum clearances permitted at the bottom of the hatchway?
(17.18.2) When the car rests on its fully compressed buffer, the car or any equipment attached thereto shall not come in contact with the floor of the hatchway.
What ancillaries need not be taken into account when determining the lowest point or projection of the car?
(17.18.1)
- Guide shoes.
- Safety jaw assemblies.
What is the minimum clearance allowed at the top of the hatchway?
(17.18.4) The car shall be able to travel a distance of 1 m above the top landing without it or any attachments coming in contact with the hatchway.
If the car operates at a speed exceeding 3 m/s the clearance shall be at least 3 m.
When the car is resting on the fully compressed buffer the counterpoise shall not come into contact with the hatchway.
Describe the requirements for over-travel devices for elevator installations?
(17.19.1) In every hatchway there shall be provided devices to cut the power to the elevator when the car reaches 300 mm above the top landing or 300 mm below the bottom landing.
(17.19.2) Every hoist operating a car shall be provided with an automatic stopping device to stop the elevator when an over-wind occur.
Describe the requirements for the construction of every counterpoise used in an elevator installation?
(17.20.1) The sections shall be secured together to prevent it from becoming detached. The counterpoise shall be situated so that it cannot fall on any part of the elevator or machinery and it shall operate in guides.
(17.20.2) Where the hatchway doesn’t extent to the lowest floor of the building, and where the space underneath is accessible, the counterpoise shall be provided with safety catches and a circuit breaker to cut the power to the elevator when the safety catches comes into operation.
How shall every car of an elevator installation be constructed?
(17.21.1) Every car shall be of substantial construction, enclosed at all sides which are not entrances and the top covered with a substantial roof.
(17.21.2) Every car shall be provided with adequate ventilation.
What are the requirements of the doors of an elevator?
(17.22.1) Every car shall be provided with a door which shall operate a circuit breaker so that the car can not be moved when any door is open.
(17.22.2) No car shall be fitted with a lattice type door without the written permission from the principle inspector of mines.
(17.22.3) Every door of the car of an automatic elevator shall open and close automatically, unless it is mechanically coupled to the landing door, and the door shall not start to close until the landing door is closed. A lattice type door do not need to open or close automatically.
Describe the requirements for a retiring cam for the car of an automatic elevator?
(17.23) The car of an automatic elevator which serves more than two landings shall be fitted with a retiring cam so that no manually operated landing door can be opened unless the car is at rest at the landing.
What shall every elevator car be provided with?
(17.24.1) Every elevator car shall be provided with:
- A button, marked “alarm” inside the car, whereby a siren may be sounded.
- A switch, attached to the suspension beam on top of the car, to enable the car to be stopped during servicing or inspection.
- An electric light inside the car which shall be kept on when the elevator is available for use and when it is being serviced.
(17.24.2) Every alarm and light in a elevator car shall be connected to a circuit other than that of the power supply to the driving machinery.
Describe the requirements for the safety catches for elevator cars?
(17.25.1) Every car suspended by ropes shall be provided with safety catches which shall be capable of holding in any position the car together with twice the maximum authorized load.
(17.25.2) The principle inspector of mines may conduct a test of the safety catches under dynamic conditions but shall only do so when there is no load in the car.
(17.25.3) Where safety catches are operated through shafting every lever and safety catch shall be keyed or welded to the shafting.
(17.25.4) A switch arranged to automatically stop the power supply to the driving machinery when the safety catch comes in operation shall be fitted on top of the car in an accessible position.
(17.25.5) No cam type safety catch shall be fitted where the speed of the car is greater than 1 m/s.
What shall be provided for every hand starting rope grip?
(17.26) A suitable locking grip shall be provided for every hand starting rope, rod or chain in any car through which it passes.
Give the requirements for a winding or balance rope used in elevators?
(17.27.1) Every rope from which a car or counterpoise is suspended shall be of steel wire, of good quality and sound manufacture, free from any visible defect and of adequate strength.
(17.27.2) The gauge of the wires in the rope shall be suited to the diameter of the sheave or drum over which the rope passes and the diameter of the sheave or drum shall not be less than 40 times the diameter of the rope.
(17.27.3) Every car or counterpoise operated by ropes shall be suspended by at least 2 ropes which shall be of equal diameter and strength.
(17.27.4.1) The ropes supporting a car or counterpoise shall not be used when the breaking force of the ropes has reduced to less than 10 times the effective load, whichever is the greater of:
- The combined mass of the car, its attachments, the maximum authorized load and any cable, balance rope or chain or
- The combined mass of the counterpoise, its attachments and any balance rope or chain.
(17.27.5) Before any winding rope or balance rope is used on an elevator, full particulars of it shall be supplied to the principle inspector of mines.
What value for “g” shall be used in calculations of breaking force for an elevator rope?
(17.27.4.2) 9.8 m/s²
How shall the breaking force of any new winding rope or balance rope or any such rope on a new elevator be ascertained?
(17.27.6) The breaking force of any new winding rope or balance rope or any such rope shall be ascertained by actual test.
What is the minimum number of turns that there shall be where the end of a winding rope on an elevator is secured to the drum?
(17.28) Where the end of any winding rope is secured to the drum, there shall be at least 3 full turns of rope on the drum when the car or counterpoise has reached its limit.
Describe the requirements for the connections of the winding ropes of elevators?
(17.29.1) Every connection between the winding rope and the car, counterpoise, drum or the hatchway structure shall be designed to prevent accidental disconnection and shall have a strength of not less than the breaking strength of the rope.
How shall the end of each rope be attached?
(17.29.1) The end of each rope shall be attached by means of an independent connection and an appliance shall distribute the load equally between the ropes.
Describe the requirements for every rope which is required to be secured to the hatchway structure?
(17.29.2) Every winding rope required to be secured to the hatchway structure shall be anchored to the beams supporting the driving machinery or to suitable rolled steel sections.
When shall every connection be renewed?
(17.29.3) Every connection of any rope shall be renewed at intervals not exceeding 10 years or whenever the ropes are changed, whichever is the shorter period.
What precautions against rope slip shall be provided?
(17.30) Where a rope is not secured to the drum or sheave, the construction shall be such that no dangerous slipping of the rope on the drum or sheave shall occur under any condition.
How shall the overhead driving machinery of an elevator be supported?
(17.31.1) The overhead driving machinery of every elevator shall be supported on beams constructed of rolled steel or reinforced concrete having sufficient strength to carry the maximum load and every end shall rest on a pillar of adequate strength.
What shall the driving power of an elevator be capable of?
(17.31.2) The driving machinery shall be secured in position and shall be able to develop sufficient power to raise at least 115% of the maximum authorized load.
Describe the requirements of the brakes of an elevator car?
(17.32.1) Where the driving machinery is operated by a motor or engine the brake shall be capable to hold the car at rest in any position when the car is loaded with at least 1.5 times its maximum authorized load.
(17.32.2) The brake shall be automatically applied when the driving machinery is not in operation or when any stopping or safety device comes into operation.
(17.32.3) The brake of every electrical operated driving machine shall be so arranged that it cannot be released before power has been applied to the driving machine.
What is the purpose of speed governors?
(17.33.1) Every car suspended by a rope shall be equipped with a speed governor to operate the safety catches.
(17.33.2) Where any counterpoise is fitted with safety catches a separate speed governor to operate the safety catches shall be provided.
What are the allowable tripping limits for speed governors?
(17.33.3) Every speed governor for a car shall be set to trip at a speed of not less than 115% and not more than 140% of the permitted speed of the car. Where a speed governor for a counterpoise is fitted, it shall be set to trip at a speed not greater than 10% of the speed at which the governor for the car is set to trip.
(17.33.4) Where driving machinery is not governed effectively there shall be provided an effective speed safety device to control the speed of the machinery.
How shall the electrical installation of every elevator be done?
(17.34.1) Except for trailing cables, the electrical wiring of every elevator car shall be in conduit or ducting unless suitable sheathed cables are used.
(17.34.2) Except for the lighting circuit, the electrical installation of every elevator shall be provided with a main switch in the motor room. This switch shall be placed in an easily accessible position as close to the entrance as practicable.
(17.34.3) The motor of every elevator car shall be provided with a reverse phase relay or other equivalent protection to prevent the reversal of the driving motor through an inadvertent reversal of the phases.
State the requirements for an elevator motor room?
(17.35) The motor room of every elevator shall:
- Be of ample size with a clear space of not less than 600 mm on at least three sides of each machine.
- Be at least 2 m high measured from the floor to the underside of the lowest portion of the roof structure.
- Contain only equipment which forms part of the elevator installation.
- Not be used as a storeroom for grease, oil and tools or other material.
- Be kept locked unless an inspection is being done or when work in connection with the elevator is done.
- A key to the lock shall be kept readily available.