What legal requirements are necessary before a person may be allowed to ride in or on a conveyance in a mine?
(16.1) No person shall ride or cause or permit any other person to ride in or on a conveyance operated by a winding plant unless it is permitted by a prescribed permit.
(16.2.1) The manager of a mine shall not use or permit to be used a winding plant unless he is in possession of a prescribed permit issued by the principle inspector of mines.
When is a permit for a winding plant not required?
(16.94) The prescribed permit shall not be required for a winding plant that is driven by a motor developing not more than 250 KW, provided that such winding plant is not used for the lowering or raising of persons or other than persons engaged in repairing or examining a shaft and does not operate in any portion of a shaft likely to interfere with the conveyance operated in that shaft served by a winding plant for which a prescribed permit has been granted.
What are the requirements for the application of use of a winding plant?
(16.2.2) Every application for the use of a winding plant shall be made to the principle inspector of mines on the form obtainable from him.
(16.2.3) The principle inspector of mines may grant a permit to use such winding plant subject to conditions as he may specify.
Explain the two places where the permit to operate a winding plant shall be kept?
(16.2.5) The permit shall be kept at the mine office and a legible copy shall be displayed in a suitable glazed frame in the engine room.
May the principle inspector of mines direct a regulation applicable to elevators to apply to winding plants?
(16.2.7) The principle inspector of mines may direct any regulation applicable to elevators to apply to an automatic or semi-automatic plant by giving written notice to the manager.
Who may carry out periodic tests or inspections on a winding plant?
(16.3) The principle inspector of mines may carry out specific or periodic tests or inspections of any winding plant.
When calculating the mass of persons for the purpose of the regulations, what mass shall be allowed as the maximum mass of each person?
Winder: 75 kg
Chairlift: 70 kg
Elevator: 70 kg
Describe the requirements for the starting, stopping and lifting power of a winder?
(16.5) The winding engine shall be such that:
(16.5.1) When running at various speeds with light or heavy loads it can be readily slowed and stopped and after being stopped it can be restarted immediately in either direction, and
(16.5.2) It can lift from the bottom to the top of the shaft the maximum unbalanced load on one drum. This provision shall not apply where other means exist for persons to reach surface.
Describe the requirements for the brakes and holding power of a winding engine where the rope is securely attached to the drum?
(16.6.1) Each winding drum or winding sheave shall be provided with an adequate brake which shall be kept in proper working order.
(16.6.2) For the drum type of winding engine where the rope is securely attached to the winding drum the brake, without assistance from any counter balancing, shall be capable of holding without slipping a load on the rope an equivalent combined mass of:
- The conveyance and its attachments.
- The maximum permitted mass of mineral, or double the maximum permitted mass of persons, or the maximum permitted mass of material together with double the maximum permitted mass of persons when both material and persons are conveyed simultaneously, whichever is the greatest and
- The mass of rope between the sheave and conveyance when the conveyance is at a point in the shaft which produce the maximum static torque on the brakes.
Describe the requirements for the brakes and holding power of a winding engine for a friction drive or sheave type winding engine where the ropes are not securely attached to the drum?
(16.6.3) For a friction drive winding engine where the rope are not securely attached to the drum the brake shall be able to hold, without slipping, the maximum static out of balance load which occurs when one of the conveyances:
- Is loaded with the permitted mass of mineral or
- Is loaded with double the permitted mass of persons or
- Is loaded with double the permitted mass of material together with double the permitted mass of persons when material and persons are conveyed simultaneously or
- Is removed from its bridle.
Explain the purpose of flanges or horns on a winding drum?
(16.6.4) Every winding drum shall have flanges or horns or other appliances to prevent the rope from slipping off or coiling unevenly.
Explain the requirements for the minimum turns of rope on the drum?
(16.6.5) Except for a friction drive winding engine there shall be not less than 3 turns of rope on the drum when the conveyance is at the lowest point in the shaft and the end of the rope shall be securely fastened around the shaft of the drum.
What are the requirements of a friction or sheave type drive concerning slipping?
(16.6.6) For a friction or sheave type winding drive, where the rope is not securely attached to the drum or sheave, there shall be no dangerous slipping under any possible conditions.
Which drum of a double drum winder shall have overlay rope?
(16.6.7) Every winding drum at the driver’s right hand side shall have overlay rope. Where only one drum is used it shall have overlay rope.
What are the requirements of the regulations as far as the operating levers of a winding plant are concerned?
(16.6.8) The control lever shall follow the overlay rope in the direction of movement.
(16.6.9) The break lever shall be pulled towards the driver to apply the breaks.
Discuss all the locking devices used on winders?
(16.6.11) The operating mechanism of the clutch of every winding drum shall be provided with a locking device to prevent inadvertent withdrawal of the clutch.
If the clutch is not clearly visible from the driver’s operating position, means shall be provided to indicate to the driver at all times the extent to which the clutch is engaged or disengaged.
(16.6.12) It shall be impossible to un-clutch any winding drum unless the brakes are fully applied and it shall be impossible to release the brake until the clutch is fully engaged and securely locked.
(16.6.13) All bolts and other fittings of winding drums, brakes and clutches shall be rendered secure by means of suitable locking devices.
Explain the requirements of the depth indicators for a winding plant?
(16.7) In addition to any marks on the rope, every winding engine shall be provided with reliable depth indicators conveniently situated, which will at all times show clearly and accurately to the winding engine driver at his operating position the position of the cage, skip or other means of conveyance and where a reduction in winding speed are necessary. The pointer of the dial indicator on the driver’s right hand side shall move in a clockwise direction when lowering, and the pointer of a post and spiral indicator shall move up or down as the conveyance move up or down.
When is only one depth indicator necessary?
(16.7) Only one depth indicator need to be provided on a friction winding engine, single drum winding engine and winding engine having two drums permanently fixed on one shaft.
Explain the requirements for the warning device for an ascending or descending conveyance?
(16.8) Where the length of wind below the uppermost landing exceeds 100m provision shall be made whereby the driver is warned of the arrival of the ascending conveyance at a point in the shaft the distance of which from the uppermost landing is not less than 3 revolutions of the drum. Provided that in the case of a single drum winder a similar device shall be provided to warn the driver of the approach of the descending conveyance to the lowest landing place.
Explain the requirements for the over-wind and over-speed prevention devices?
(16.9.1) Every winding engine shall be fitted with at least:
- One effective automatic over-wind prevention device, and
- One effective automatic over-speed prevention device.
Explain the requirements for the slack rope detection device?
(16.9.2.1) The employer must install a device that detect slack rope on every winding plant in which the rope is attached to the drum operating in a vertical shaft excluding a shaft in the course of being sunk.
What must the slack rope device do when it detects a slack rope condition?
(16.9.2.2) The device must either automatically stop all winding operations in the vertical shaft safely or warn all winding drivers operating in such shaft of the slack rope condition.
What must the employer do to rectify slack rope conditions?
(16.9.2.3) The employer must establish an effective and safe procedure for rectifying any slack rope conditions.
What are the procedures for a slack rope condition in a vertical shaft?
(16.9.2.4) All winding operations in the vertical shaft must cease when a slack rope condition occurs, except such operations necessary for rectifying the slack rope condition authorized by the engineer.
(16.9.2.5) No winding operations may resume, except operations permissible by the engineer to rectify the slack rope condition, until the slack rope condition has been rectified.
Explain the requirements for the speed indicator and tachograph of a winding plant?
(16.10) Any winding engine with a permitted speed of over 5 m/s shall be fitted with a speed indicator and a tachograph which shall be used and maintained in efficient working order. The speed indicator shall be so situated that the winding speed can be easily read at all times by the winding engine driver from his operating position.
What are the requirements for the construction of cages?
(16.11) Every cage used for the conveyance of persons shall be of substantial construction and shall be provided with a proper roof and doors.
The cage shall be enclosed in such a manner as to prevent any portion of the body of any person therein from accidentally coming into contact with equipment in the shaft or the sides of the shaft.
The doors shall be securely attached to the cage and arranged so that they cannot be opened outwards or accidentally. Provision shall be made for adequate ventilation through the cage.
What shall the construction of other conveyances used for transporting persons comply with?
(16.12) Every skip or kibble, used for the regular conveyance of persons shall be provided with a substantial roof or cover that will safeguard the occupants.
What shall the conveyance used for examining or doing repair work comply with?
(16.13) Every conveyance used for examining, repairing or doing other work, shall be provided with a substantial roof or cover and shall be enclosed to protect any person from accidentally falling out.
What are the requirements of any examination platform used in a shaft?
(16.14) Where the roof or cover of a conveyance is used as a platform for persons engaged in examining, repairing or doing work in a shaft or winze, the persons shall be protected by a cover immediately above them. Such cover shall be removed as soon as the work is completed.
When is a trailer allowed to be used for the transportation of persons?
(16.15) No trailer:
- Shall be used in a shaft where persons are regularly conveyed.
- Shall be attached to a conveyance when such conveyance is used for the transportation of persons and
- Shall be used for the regular transportation of persons, unless it is allowed by a prescribed permit.
(16.68) Persons shall not be raised or lowered in a conveyance attached to the normal conveyance except with the written permission from the principle inspector of mines.
No rope, bar, link, chain or other connection shall be used for winding purposes unless it conforms to certain conditions. What are those conditions?
(16.16) No rope, bar, link, chain or other connection shall be used for winding purposes unless it is of good quality and manufacture, free from any visible defect and of adequate calculated strength.
Discuss the accidental disconnection of a conveyance?
(16.17) The connection between:
- Any winding rope and the cage, skip, bucket, kibble, other means of conveyance or counterpoise
- Any balance rope or tail rope and the conveyance or counterpoise and
- Any connecting rope and the conveyance and any trailer or other attached conveyance shall be such that no accidental disconnection can take place.
When shall the connections between the winding rope and the conveyance be annealed?
(16.18) At intervals of not more than 6 months the connections between:
- Any winding rope and conveyance or counterpoise
- The conveyance and trailer or other attached conveyance and
- Any balance rope or tail rope and the conveyance or counterpoise shall be annealed or given other proper heat treatment or shall be discarded and replaced. With connections of a class of steel approved by the chief inspector, the interval for heat treatment may be extended with the written permission from the chief inspector of mines.
(16.76) If the connections are of a class of steel approved by the chief inspector of mines such connections shall be dismantled, cleaned and then examined by the engineer or person appointed in terms of regulation 2.13.2
What record shall be kept of the connections?
(16.19) A proper record shall be kept of the heat treatment and working life of the connections. The engineer shall add to the record the report on the procedure followed in the treatment and his comments on the results. All the connections shall be marked clearly for identification.
How must a winding rope be manufactured?
(16.20.1) All winding ropes must be manufactured by an accredited manufacturer.
What must the diameter and construction of the winding rope be?
(16.20.2) The diameter and construction of the winding rope must be suited to the diameter of the sheaves and drums.
May a winding rope which has been joined or reinforced be used?
(16.21) A winding rope which has been joined or reinforced in any manner may not be used as part of a winding plant without the written permission of the principle inspector of mines.
May a winding rope, guide rope or balance rope be re-used?
(16.23.1) Any winding rope, balance rope or guide rope which has previously been in use may not be re-used unless the breaking strength has been determined by a destructive test by a approved rope testing station and it comply with the relevant regulations.
(16.23.2) Any winding rope, balance rope or guide rope which has previously been in use may not be re-used unless the engineer is in possession of the documented history of the working life of the rope.
What are the provisions of the regulations regarding a spare rope?
(16.24) For every winding plant in use there must be in reserve and ready for use at all times a spare winding rope that complies with the regulations. One such rope may be kept for more than one winding plant if that rope is suitable for use on such other winding plants.
What other provisions of the regulations apply before any rope shall be installed?
(16.25) No winding rope, balance rope or guide rope may be installed unless the manager is in possession of a certificate not older than two years confirming that the breaking strength complies with the regulations.
What duties must the engineer perform before the raising or lowering of persons may be allowed after a new rope has been installed?
(16.27.1) Any newly installed rope and the rope connections must be carefully examined by the engineer and may not be used for the raising or lowering of persons until the conveyance loaded with the maximum permitted mass has been run for two complete test trips between the highest and lowest stopping places.
(16.27.2) The engineer must record and sign the results of the examination immediately in the driver’s log book and shall enter a true report in the rope record book.
What information must be submitted to the principle inspector of mines when a winding rope is installed?
(16.28.1)
- Name of manufacturer.
- Date of manufacture, coil number, length.
- Mass per meter, diameter, width or thickness.
- Construction of rope: type and length of lay, number of strands, class of heart, type of lubricant.
- Construction of strands, number of wires, diameter of wires, class of core, class of steel, tensile strength.
- Breaking force.
- Rope test certificate and place of test.
- Whether used for balance or winding purposes.
- Name and type of shaft.
- Name of compartment.
- Winding plant certificate number.
- Date installed.
What information must be submitted to the principle inspector of mines when a winding rope in use is replaced?
(16.28.2) When any winding rope in use is replaced the following information must be submitted to the principle inspector of mines:
- Reasons for discard.
- The life in terms of winding cycles.
- The time in use and
- Any other particulars the principle inspector of mines may require.
What value for “g” must be used in winder calculations?
(16.30.2) 9.81 m/s²
What are the requirements of the regulations when a conveyance is suspended by two or more ropes?
(16.32) Where a conveyance is suspended by two or more winding ropes:
- Such ropes must have the same diameter and strength.
- Arrangements must be made to equalize the tension in the ropes.
- Each rope must be assumed to carry equal share of the load.
How must the condition of a winding rope be assessed?
(16.33) The condition of a winding rope or balance rope must be assessed according to SABS COP for the condition assessment of steel wire ropes on mine winders, SABS 0293, and the rope may not be used if the condition assessed at that point in the rope has reached the discard criteria.
Describe the requirements for the cutting, testing and re-capping of winding ropes?
(16.41.1.1) A sample of every winding rope in use must be cut from the end attached to the conveyance or counterweight (front-end) at intervals not exceeding 6 months unless the winding system does not allow shortening of the rope.
Describe the requirements for the cutting, testing and re-capping where winding ropes are connected to a compensating sheave?
(16.41.1.2) Where winding ropes are connected to a compensating sheave on the conveyance or counterweight, that part of the ropes that is in contact with the sheave on the conveyance or counterweight must be cut off and the rope re-terminated at intervals not exceeding 3 months.
What must the length of the sample be?
(16.41.1.1) The length of the sample must be as specified by an approved rope testing station.
What must be done with the sample?
(16.41.2) The manager must send the sample within 2 weeks to an approved rope testing station where the breaking strength and general condition must be determined.
(16.41.3) The rope testing station must provide the manager with a certificate showing the results of the test.
(16.41.4) If the sample received at the rope testing station is in a condition not permitting a satisfactory test a new sample must be provided.
Describe the requirements of the signalling arrangements of a winding plant?
(16.42.1) Unless exempted in writing by the principle inspector of mines every shaft in which winding is carried on, other than a shaft in the course of being sunk, shall be provided with some efficient signalling arrangement for interchanging distinct signals between:
- The winding engine driver and the bank, and
- The winding engine driver and every point below the bank from which winding is carried on.
Describe the requirements for a signal system for shaft examination?
(16.42.2) Every shaft where persons travel in or on the conveyance while carrying out any examination, repair or other work shall be provided with some efficient means approved by the principle inspector of mines whereby they can signal effectively from any depth in the shaft to the winding engine driver.
Describe the requirements for a signal system at inclined sinking shafts?
(16.42.3) Every incline shaft in the course of being sunk shall be provided with some efficient signalling arrangement for each winding plant for interchanging distinct signals between:
- The winding engine driver and the bank, and
- The winding engine driver and every established landing station below the bank, and
- The winding engine driver and a point not more than 40m from the bottom of the shaft.
When this point is more than 15m from the bottom of the shaft some efficient signalling arrangement shall be provided between this point and the bottom of the shaft.
Describe the requirements for a signal system at vertical sinking shafts
(16.42.4) Every vertical sinking shaft in the course of being sunk shall be provided with 2 separate means of distinct signalling from the bottom of the shaft and from any depth in the shaft to the winding engine driver and the interchange of distinct signals between the winding engine driver and the bank and the winding engine driver every established landing station below the bank.
Describe the requirements for the signal system for a shaft not in the course of being sunk and where persons are conveyed and where the signal arrangements are electrically operated.
(16.43.1) Every shaft not in the course of being sunk and where persons are conveyed and where the signal arrangements are electrically operated there shall be provided and maintained in good working order 2 separate, independent and efficient signalling arrangements referred to as the locked-bell system and the call-bell system.
Describe the requirements for the locked-bell system
(16.43.2) The locked bell system shall be for the:
- Interchange of signals between the winding engine driver and the bank, and
- Interchange signals between the winding engine driver and every established landing station below the bank, but
- Shall not enable the banksman to signal on this system to anyone but the winding engine driver.
(16.43.3) The system shall be so arranged that the winding engine driver can distinguish between signals received from the bank and signals below the bank.
Describe the locking requirements for the signal system?
(16.43.4) The signal system shall be arranged and maintained so as to prevent unauthorized signals being given. The signal operating mechanism shall be enclosed in a metal casing and shall be kept locked when not in use. The key shall be removable and be kept by the banksman, onsetter or other authorized person.
Describe the bell-brake interlock device?
(16.43.5) There shall be a device which prevents the conveyance from being raised or lowered after the winding engine driver has given a signal until a return signal has been received from the onsetter or banksman.
Describe the call-bell system
(16.43.6) The call-bell system shall:
- Enable signals to be transmitted from the bank to the winding engine driver, and
- Enable signals from every established point below the bank to the winding engine driver, but
- The winding engine driver are not allowed to transmit signals.
- Any person can transmit accident to person signal (10 followed by station nr) and accident to shaft signal. (1 long ring)
- Enable signals to be interchanged between the bank and every established point below the bank.
How shall the tone of the signals from a locked-bell system differ from that of a call-bell system?
(16.43.8) The tone of the locked-bell system shall be such as to easily distinguish it from the tone of the call-bell system and visa versa.
What are the requirements of a telephone in the place of a call-bell system?
(16.43.9) It shall be necessary to provide only one call-bell system in a shaft or winze where efficient telephonic communication is provided between the bank and every established landing station for persons.
May other signaling arrangements be used?
(16.44) Other signaling arrangements may be used with the written permission of the principle inspector of mines.
May other special signals be used?
(16.46) Special signals may be used provided they have been approved in writing by the principle inspector of mines.
What are the requirements when a person acting in conflict with the code of signals?
(16.47) Any person acting in conflict with the code of signals or of any approved special signals shall be guilty of an offence.
May a person enter or leave a conveyance before the appropriate signals have been exchanged?
(16.48) No person shall enter or have access to a cage or shall leave a cage until the appropriate signals have been exchanged. If a signal can not be given on the bell system, another distinct signal shall be given.
What are the requirements regarding the code of signals to be posted up?
(16.49.1) The code of signals or abridged form thereof approved by the chief inspector of mines as well as all the special signals shall be displayed in a suitable form in letters not smaller than 10mm. The principle inspector of mines will determine if such notice are suitably displayed.
Where shall the notices be posted up?
(16.49.1) Such notices shall be posted up in the winding engine room, at the bank and at all stations. It shall only be necessary to display the signals being used.
When are guides compulsory for cages in a vertical shaft?
(16.50) Every vertical shaft and winze exceeding 30m in depth shall be provided with guides for skips, cages or other means of conveyance unless exempted in writing by the principle inspector of mines.
Describe the safety measures required for a shaft crossing for workmen?
(16.51) At any place in a shaft where it is necessary for workmen to pass from one side to the other, provision shall be made for them to do so without entering or crossing a compartment in which winding is taking place. Such passage shall be clearly fenced off from moving parts of machinery and from any conveyance.
Who may enter the compartment of a winding shaft and under what conditions?
(16.52) No person shall enter or cross a compartment of a shaft or headgear in which winding is taking place except for the purpose of entering or leaving the conveyance or for the purpose of conducting an examination, effecting repairs or doing necessary work in the compartment.
May any winding operations be carried on in a shaft while persons are engaged in effecting repairs?
(16.53) No winding operations shall be carried on in a shaft or headgear while persons are engaged in effecting repairs, conducting an examination or doing work in such a shaft or headgear except:
(16.53.1) Where such winding operations are necessary for the purpose of effecting the repairs, conducting the examination or doing the work or
(16.53.2) Where the persons engaged in repairs, conducting the examination or doing the work are adequately protected from the conveyances and other winding equipment used in such winding operations as well as from falling stones and material or
(16.56) Where work is being done at the bottom of the shaft in the course of being sunk.
May any repairs be carried out in a shaft while winding operations are being carried on?
(16.54) No person shall effect repairs, conduct an examination or do other work in a shaft or a headgear while winding operations are being carried on in such shaft or headgear except:
(16.54.1) Where such person is adequately protected from the conveyances and other winding equipment as well as from falling stones and material or
(16.54.2) Where the winding operations are necessary for the person to effect the repairs, conduct the examination or to do work or
(16.56) Where work is being done at the bottom of the shaft in the course of being sunk.
What are the requirements where the driver must be specially warned?
(16.55) The person in immediate charge of any repairs, examination or maintenance in a winding compartment of a shaft, winze or headgear shall warn the winding engine driver of such repairs, examination or maintenance and shall enter in the presence of the driver such warning in the driver’s logbook. Such entry shall be countersigned by the driver and by any driver relieving him. Where it is not practicable for the person in charge of such repairs, examination or maintenance to enter such warning, the entry shall be made by the driver on duty. The entry shall be cancelled by the person in immediate charge of the repairs, examination or maintenance on completion. Work may be done at the bottom of a shaft in the course of being sunk without following the above procedure.
When the persons doing the examinations, repair or other work are not protected from the conveyance, falling stones or material all other winding engine drivers of other conveyances operating in the shaft shall be warned in the same way.
When shall spring keps or jack catches be provided in the headgear? What is the purpose of spring keps or jack catches?
(16.57) Where winding is carried on in a shaft or winze there shall be fitted above the bank spring keps or jack catches or some other effective equipment to support the conveyance detached from the rope as a result of an over-wind.
When shall detaching hooks be provided? What is the purpose of detaching hooks?
(16.58) Detaching hooks shall be fitted for a winding system in a vertical shaft where the end of the rope is fastened to the drum. The detaching hooks shall detach and support the conveyance from the winding rope if an over-wind occurs. Detaching hooks need not to be fitted to the rope used in a vertical shaft in the course of being sunk.
What are the requirements of the retarding device for a winding system in a vertical shaft where the rope is not fastened to the drum?
(16.59.1) For a winding system in a vertical shaft where the rope is not fastened to the drum:
- The over-run space in the headgear shall be provided with guides or other appliances to retard a over-wind conveyance to minimize the risk of the conveyance coming into contact with the headgear buffer or sheave, and
(16.59.2) The over-run space at the bottom of the shaft shall be provided with guides or other appliances to retard a over-wind conveyance before it comes into contact with any fixed bstacle.
What are the requirements on over-run clearance in the headgear of a shaft?
(16.60) The headgear shall be carried sufficiently high to allow a clearance of at least 7.5m in which the conveyance can travel above the highest landing place for persons before it comes into contact with any fixed obstacle excluding any retarding appliance.
What are the requirements on over-run clearance at the bottom of the shaft?
(16.61) The shaft shall be sufficiently deep to allow an over-run space of at least 7.5m in which the conveyance can travel below the lowest landing place for persons before it comes into contact with any fixed obstacle excluding any retarding appliance.
Such over-run space need not to be provided in a shaft in the course of being sunk or in a shaft not deeper than 300m where balance or tail ropes are not used.
What are the requirements for every station level?
(16.61.1) The employer must for every station level:
- Identify and clearly demarcate an area surrounding the shaft as the shaft station.
- Show the shaft station, including the location of all safety devices on a plan, and
- Prominently and conspicuously display a copy of such plan at every station.
What device or combination of devices must the employer install at all entrances to a shaft and where must these devices be installed?
(16.61.2.1) The employer must install a device or combination of devices that prevent inadvertent access of vehicles to the shaft as close as practicable to all entrances to the shaft.
What are the requirements of the regulations with respect to these devices?
(16.61.2.2) The device or combination of devices must be:
- Fail safe or lockable.
- Equipped with mechanisms that prevent unauthorized operation or removal.
- Operated only under the direct supervision of a competent person appointed by the engineer or by the person appointed in terms of regulation 2.13.2
- Operated only if a conveyance is being used for the loading or unloading of persons, equipment, material, mineral or explosives at the entrance to the shaft.
What are the responsibilities of the employer with regard to any self propelled mobile machine entering a shaft station?
(16.61.2.3/4) The employer must install a device or combination of devices or the access to the shaft station must be such as to limit the speed of any self propelled mobile machine entering the shaft to ensure that the kinetic energy of the machine is not greater than the energy absorption capacity of the device.
(16.61.2.4) The employer must ensure that procedures are in place or the devices are equipped with mechanisms that prevent the unauthorized operation or removal of such device.
What are the responsibilities of the engineer or person appointed in terms of regulation 2.13.2 with regard to access configuration and devices at entrances to shafts?
(16.61.2.5) The engineer or person appointed in terms of regulation 2.13.2 must:
- Approve any access configuration.
- Approve the design of the device and
- Ensure that every device is installed and maintained in good working order.
May a self-propelled mobile machine be parked in the shaft station?
(16.61.3) No self-propelled mobile machine may be parked in the shaft station.
When may a self propelled mobile machine enter the shaft station under power?
(16.61.4) A self propelled mobile machine may only enter the shaft station under power if it is under the direct supervision of a competent person appointed by the engineer or the person appointed in terms of regulation 2.13.2
When may persons travel in a conveyance loaded with mineral?
(16.62) No person shall travel in a conveyance operated by a winding engine if such conveyance is loaded or partially loaded with mineral and no person shall travel in a conveyance operated by a winding engine that is being used simultaneously for the winding of mineral. The manager or mine overseer may authorize persons engaged in sinking operations in a vertical shaft to descent in a conveyance operated by a winding plant that is simultaneously used for the raising of mineral.
When may persons travel with material or explosives?
(16.63) No person shall travel with material or explosives in a conveyance operated by a winding engine and in a conveyance operated by a winding engine used simultaneously for the winding of material or explosives.
(16.64) The manager, mine overseer or engineer may grant permission in writing for persons to travel with material if such material is not likely to endanger persons in the conveyance and the manager shall:
- Cause a list to be kept of all the material for which permission has been granted.
- Ensure all persons authorized to give signals are aware of the list of material, and
- Make a copy of the list available to all persons concerned.
Which persons may be authorized, and by whom, to travel with material and for what reasons?
The manager, mine overseer or engineer may authorize the following persons to travel in a shaft with material or explosives if such traveling is necessary for the efficient carrying out of their duties.
(16.65.1) Onsetters and their gangs.
(16.65.3) Persons engaged in sinking operations, conducting an examination or effecting repairs.
(16.65.4) Persons required to ensure the safe passage through the shaft of material which cannot be conveyed inside the conveyance.
Who may load or unload explosives?
(16.66) No person shall place explosives in or remove them from a conveyance operated by a winding engine except under the immediate supervision of the banksman or onsetter or a competent person authorized by the manager or mine overseer.
Which persons may ride outside a conveyance?
(16.67) No person shall ride on the roof, side or any position outside a conveyance or on a special platform except persons doing examinations or repairs and if authorized to do so by the manager or mine overseer and if it is necessary to sufficiently carry out their duties.
Explain the requirements for a bucket to be steadied before it may be conveyed?
(16.69) No bucket or other conveyance that can sway shall be allowed to leave the top or bottom of the shaft unless it has been steadied.
How shall a bucket or other means of conveyance be filled?
(16.70) No bucket or other means of conveyance shall be filled with loose rock or ground above the level of the brim.
How shall tools or other material be fastened in a conveyance?
(16.71) Tools or other material which project above the cage or other means of conveyance shall be fastened securely and placed so that no arresting device is effected.
When shall the winding installation be given a trial run?
(16.72) When winding has been stopped for repairs or blasting or any other purpose for more than one hour or when a conveyance has been changed the winding engine shall not be used for the raising or lowering of persons until the conveyance has been run at least one complete trip down and up. Provided that this regulation shall not apply for the raising or lowering of persons conducting an examination or doing repairs and provided further that where such stoppage is confined to a portion of a compartment, the requirements of the regulation shall apply only to such portions.
Describe the requirements for shaft examination?
(16.73) The manager and engineer shall, in respect of his area of responsibility, appoint in writing competent persons whose duty it shall be to examine carefully to an extent to be clearly defined in their letters of appointment at least once in each week and at intervals not exceeding 10 days the guides or rails, shaft compartment, doors, gates, barriers and equipment at stations, landing platforms and loading boxes.
Describe the requirements for winding equipment examination by the appointed competent persons?
(16.74) An engineer or competent person appointed in terms of regulation 2.13.2 shall appoint in writing some competent person or persons (electrician, fitter, boilermaker, rigger/ropesman) whose duty it shall be to examine carefully:
(16.74.1) At least once in each day:
- The winding ropes.
- The balance ropes or tail ropes.
- The connection of the winding ropes to the drums.
- The connection between the winding rope and conveyance or counterpoise.
- The connection between the conveyance and any trailer or other attached conveyance.
- The connection between any balance rope or tail rope and the conveyance or counterpoise.
- The conveyance and the main members by which they are suspended and any safety catches attached thereto.
- The pulley wheels and sheaves.
- The brakes.
- The depth indicators and
- The safety devices and all external parts of the winding equipment upon the proper working of which the safety of persons depends.
Provided that these daily examinations will not be necessary on a Sunday, Christmas day, Day of the Covenant, Good Friday or Republic day if the winding plant makes less than 50 trips on such day and
(16.74.2) At least once in each week:
- The signaling arrangements and safety devices used in connection therewith.
Describe the requirements for winding equipment examination by the engineer?
(16.75) An engineer or competent person appointed in terms of regulation 2.13.2 shall examine carefully-
(16.75.1) At least once in each week and at intervals not exceeding 10 days:
- The over-speed and over-wind prevention devices, and
- The external parts of the winding engine.
(16.75.3) At least once in each month at intervals not exceeding 45 days:
- The structure of the winding and balance or tail rope to determine the amount of deterioration thereof.
- The connections between the winding rope and the drum.
- The connections between the winding rope and the conveyance or counterpoise.
- The connections between the conveyance and any trailer or other attached conveyance.
- The connections between any balance rope or tail rope and the conveyance or counterpoise and
- The sheave wheel or wheels.
(16.75.6) At least once in every 6 months at intervals not exceeding 200 days:
- Dynamically testing the automatic over-wind and over-speed prevention devices.
(16.75.2) At least once in each year:
- The winding engine as to the condition of the internal mechanical parts and as far as reasonable practical, the internal electrical parts.
Describe the examination procedure of the rope to ascertain the amount of deterioration thereof?
(16.75.3) An engineer or competent person appointed in terms of regulation 2.13.2 shall examine carefully at least once in each month at intervals not exceeding 45 days the structure of the winding and balance or tail rope to determine the amount of deterioration thereof.
The person making the examination shall:
- Select places to be cleaned.
- Note any reduction in the circumference of the rope.
- Note any variation in the length of lay of the rope.
- Note the superficial condition of the wires as to wear, corrosion, fractures and brittleness and
- Note all other data necessary to detect the amount, extent and distribution of the
- deterioration of the rope.
If the examination discloses features such as undue or rapid wear or fractures of the wires, which, although not constituting sufficient reason for condemning the rope, call for more than usual attention, the examination shall be made more frequently.
Describe the requirements if on any examination there is discovered any weakness or defect which may endanger the safety of persons?
(16.77) If on any examination (daily, weekly, monthly or yearly on shaft or winding plant) there is discovered any weakness or defect which may endanger the safety of persons and such weakness or defect can not be immediately fixed the person making the discovery shall report such weakness or defect to the manager without delay. Until such weakness or defect is fixed the winding plant shall not be used except in so far as may be necessary to fix the weakness or defect.
Describe the requirements of the examination the engineer shall do after every accident or occurrence?
(16.75.5) The engineer or competent person appointed in terms of regulation 2.13.2 shall examine carefully after every accident or occurrence and before winding operations are resumed all portions of the winding equipment affected by such accident or occurrence on which the safety of persons depends.
Describe the requirements for the machinery record book?
(16.78) The manager shall provide every winding plant with a machinery record book in which shall be entered the name of each person appointed to do examinations and the duties of each person. The person doing the examination shall record and sign a true report of each examination. An engineer or competent person appointed in terms of regulation 2.13.2 shall scrutinize and countersign this record at least once in each week.
Describe the requirements for the rope record book.
(16.79) The manager shall provide each winding plant with a rope record book in which shall be entered the name of the engineer or person appointed in terms of regulation 2.13.2 doing examinations on the winding, balance and guide ropes and its connections.
The engineer shall enter a true report of every test or examination in the rope record book.
What particulars of the rope shall be entered into the rope record book?
(16.79) The following particulars of each winding, balance and tail rope shall be entered into the rope record book:
a) Name of manufacturer:
- date of manufacture
- coil number
- length
- diameter
- mass/m
b) Construction of rope:
- type and length of lay
- number of strands
- class of heart
- type of lubricant
c) Construction of strands:
- number of wires
- diameter of wires
- class of core
- class of steel
- tensile strength
d) Breaking force.
e) Rope test certificate nr and place of test.
f) Whether used for winding or balance purposes.
- name and type of shaft.
- name of compartment.
- winding plant certificate number.
- date installed.
g) Dates of recapping, shortening or turning.
- dates of testing and the breaking force obtained at each test.
- date taken off.
- dates of annealing or renewing connections.
Describe the requirements for the shaft log book?
(16.80) The manager shall provide for each shaft or winze where persons are regularly conveyed a shaft log book in which shall be entered:
- The name of the appointed persons to do shaft exam and the duties of each person.
- A true report of every shaft examination. This report shall be recorded and signed without delay by the person making the examination and the reports shall be scrutinized and countersigned by the manager or mine overseer and by an engineer or competent person appointed in terms of regulation 2.13.2 at least once in each week.
Describe the requirements for the driver’s logbook?
(16.81) The manager shall provide every winding engine except a automatic winding engine with a driver’s log book which shall be kept in the winding engine room and in which shall be recorded in duplicate:
- A true report of the condition of the winding engine, the brakes, clutches, reversing gear, depth indicator and all other fittings. Such report shall be made and signed by the driver for each period of charge, the time and duration which shall be recorded.
- A true report of the condition of the signalling arrangements together with any signals received by the driver which he has questioned. Such report shall be made and signed by the driver for each period of charge.
- Any special instructions involving the safety of persons given to the driver and the time such instructions were given. Such entry shall be signed by the person giving the instruction and shall be countersigned by the driver.
- Any warning giving and the time such warning was given.
- The contents of the conveyances and the last signals received by the driver when his relief is about to take over and such report shall be countersigned by the driver by whom he is relieved.
- The entries in the driver’s logbook shall be scrutinized and countersigned daily by the appointed competent persons doing daily examinations. The duplicate shall be scrutinized and ountersigned within 24 hrs by an engineer or competent person appointed in terms of regulation 2.13.2 and shall be kept by him for at least 30 days.
Describe the requirements of the winding engine driver to have a certificate?
(16.83.1) Nobody shall drive, be permitted or caused to drive a winding plant for which a prescribed permit has been issued unless he is a certificated winding engine driver. A learner winding engine driver may drive a winding plant under the direct supervision of a certificated winding engine driver while no persons are being conveyed.
(16.96) The engineer shall satisfy himself that any person who is not a certificated winding engine driver and who shall drive a winding plant not permitted for the conveyance of persons, is competent to do so.
May a winding engine driver be engaged which haven’t driven a winding engine in 1 year?
(16.84) When a winding engine driver is engaged the manager shall record the winding engine driver’s certificate number and type of certificate. When a winding engine driver has not driven a winding engine in 2 years or more the manager shall not engage him but refer the matter to the principle inspector of mines who may require that such driver undergo a medical examination and proficiency examination.
May a person speak to the winding engine driver while he is operating the winding engine?
(16.85) No person shall speak to or in any way distract the attention of the person operating a winding engine while it is in motion, except a person in authority and then only in cases of necessity or emergency.
When may a winding engine driver start the winding engine?
(16.86.1) The driver shall not start his engine before he has received a distinct and proper signal to do so unless he has been instructed in writing to do so by the manager, mine overseer, engineer or person appointed in terms of regulation 2.13.2 or unless he has received the clear signal 2 pause 2 or unless he has sole control of the conveyance.
(16.86.7) The winding engine driver shall not start his engine until the expiry of at least 10 seconds after receiving a signal to raise or lower persons. This shall not apply when blasting is about to take place in a shaft in the course of being sunk.
When shall the driver act on a signal if he has been unable to do so for 1 min or more?
(16.86.2) The winding engine driver shall not act on any signal if he has been unable to do so within 1 minute after receiving it but shall request a repeat signal. After having received the clear signal he may move the winding engine at any time during his shift at his discretion but when a period of more than 5 minutes has lapsed after he has received the clear signal he shall move the conveyance slowly.
At what maximum speed shall a winding engine driver operate the winder?
(16.86.3) The driver of the winding engine shall not run the engine at a speed greater than that fixed by the principle inspector of mines.
Describe the duty of the winding engine driver to avoid shocks?
(16.86.4) The winding engine driver shall, except in the case of an emergency, avoid shocks in starting, stopping and running the engine.
What is the duty of the winding engine driver to prevent an over-wind?
(16.86.5) The winding engine driver shall apply correctly every device and means available to prevent the conveyance from over-running the signalled destination or the highest or lowest landing place and shall prevent any danger to the safety of persons or damage to winding equipment.
What is the duty of the winding engine driver to prevent the conveyance from moving in the wrong direction?
(16.86.6) The winding engine driver shall apply correctly every device and means available to prevent the conveyance moving in a direction opposite to that signalled.
May the winding engine driver respond to a signal on the call-bell system?
(16.86.8) The winding engine driver shall not act in response to any signal on the call-bell system other than the one long ring meaning accident to shaft.
State the tests to be done before a drum may be un-clutched?
(16.86.9) The driver of a winding engine shall not un-clutch a drum until he has assured himself by testing the brake against sufficient power that it is in proper condition to hold the load suspended from the said drum.
May a winding engine driver lower material on an un-clutched drum?
(16.86.10) Lowering from an un-clutched drum shall not be permitted. When a drum is un-clutched the driver shall use the brake only to maintain the drum stationary.
Describe how the driver shall test a friction clutch?
(16.86.11) The winding engine driver shall test the holding power of the clutch after engaging the clutch and before releasing the break.
The test shall be made against the normal starting current while the break of the other drum is kept off.
When is clutching prohibited on a winding engine?
(16.86.12) The driver of a winding engine shall not perform clutching operations while persons are in either of the conveyances operated by the engine.
May persons be lowered or raised on an un-clutched sinking platform?
(16.93.4.1) In a shaft being sunk or equipped clutching may be performed with a sinking platform winder with persons on the sinking platform necessary to ensure that the operations are carried out safely.
When shall the driver give the signal that clutching operations are complete?
(16.86.13) The driver shall not give the signal for clutching operations to be complete until he has engaged the clutch and has securely locked it and tested it unless he intends operating the winding engine on a single drum during shaft examination, shaft repairs or shaft sinking operations.
Describe the requirements for the duration of shift of the winding engine driver?
(16.86.14) The driver of a winding engine shall not work, be caused or permitted to work a longer shift on the winding engine than 10 hrs, except where permission has been obtained from the principle inspector of mines and under conditions as he may direct.
What are the duties of the winding engine driver when conveying persons?
(16.86.15) The winding engine driver shall take all reasonable measures to safeguard persons being conveyed and to avoid any unnecessary delays.
What signals may any person give?
(16.87) No unauthorized person shall give any signal other than an accident signal or shall in any manner interfere with the signaling arrangements.
May any person be allowed to carry out the duties of an onsetter or a banksman?
(16.88) No person shall be permitted to carry out the duties of a banksman or onsetter unless he is the holder of an onsetter’s certificate issued in accordance with the regulations. Every appointment of a banksman or onsetter shall be made in writing by the manager.
Who may give signals for the raising or lowering of persons in a winding shaft other than an onsetter or banksman?
(16.89.1) No person other than the banksman or onsetter shall give signals for the raising or lowering of persons.
When the onsetter or banksman are not available a competent person with written permission from the manager may give signals for the conveyance of himself and any person traveling with him. A list of the permitted persons shall be submitted to the principle inspector of mines on demand.
The ganger or Section Boss in charge at the bottom of a shaft in the course of being sunk or a person acting under his immediate supervision may give a signal to raise persons.
Any person duly authorized in writing by the manager or mine overseer may give signals for the conveyance of persons between the main mineral loading station at the bottom of a vertical or inclined shaft and the lowest landing station for persons.
Who may give signals for the raising or lowering of material or mineral?
(16.89.2) No person other than the banksman or onsetter shall give any signal for the raising or lowering of material or mineral unless authorized by the manager or mine overseer. Where the winding plant is also used for the conveyance of persons such authorization shall be in writing.
Describe the requirements of the onsetter or banksman to have knowledge of shaft operations?
(16.90) No person shall be appointed as a banksman or onsetter and no person shall be authorized to give signals unless such person has sufficient knowledge of the shaft operations and of the signals to be given.
State the special duties of a banksman, onsetter or other person authorized to give signals for winding operations?
(16.91) The banksman, onsetter or other person authorized to give signals for winding operations shall:
- Not give any signal until all persons are properly placed in the conveyance and the doors are properly shut.
- Not give any signal until all persons who are to leave the conveyance are out and clear.
- Ensure that the roof or cover is properly in position.
- Take all reasonable measures to prevent persons from having unauthorized access to the conveyance and winding compartments.
- Not allow any person to travel in a conveyance simultaneously with mineral or material.
- Not allow any person to ride on the roof or in any position outside a conveyance.
- Not allow more than the maximum number of persons to ride.
- Not allow any unauthorized person to give signals.
- Not give the clear signal or any signal to raise or lower the conveyance unless all persons are in a position not be endangered by the movement of such conveyance.
- Not give a signal to clutch unless all persons are out of and clear of the conveyance.
- Not cause or permit any person to enter or have access to the conveyance until he has received a signal that clutching operations are complete.
- Take all reasonable measures to safeguard all persons against accident at the place where he is in charge whether such persons are under his direct supervision or not.
What notices shall be displayed at every winding plant?
(16.92.1) Where a winding plant is used the following shall be kept posted up:
At each winding engine:
- A copy of the permit, and
- The code of signals and any other special signals.
(16.92.2) At each bank, station or landing platform:
- A notice showing clearly the maximum number of persons permitted to ride in each conveyance
- A notice prohibiting the conveyance of persons where it is not allowed.
- The code of signals and any other special signals.
What shall the speed of the winding engine be when the conveyance is approaching or passing through the stage or covering provided when men are working at shaft bottom?
(16.93.1) When any bucket or other means of conveyance is approaching or passing through the stage or covering the winding engine driver shall control the speed to ensure that it passes through slowly and safely and that the crosshead is picked up or released without shock.
Give the condition for stopping at shaft bottom in the course of a shaft being sunk?
(16.93.2) The bucket or other means of conveyance shall not be lowered directly to the bottom of the shaft if men are there but shall be stopped at least 5m above the bottom and shall not be lowered further until the signal has been given by one of the sinkers.
Describe the requirements for the guides for conveyances in vertical shafts?
(16.93.3.1) In a vertical shaft:
- Where sets are used to support the guides the guides shall extend down to the lowest set which shall be not more than 15m from the bottom. When winding is done to the bottom the crosshead shall travel to the lowest set but one.
- Where the guides are not supported by sets the guides shall extend down to 30m or less from the bottom. When winding is being done to the bottom the crosshead shall travel to the end of the guides as far as practicable.
Describe the requirements where a crosshead is used to guide the bucket or other conveyance?
(16.93.3.2) Every vertical shaft where a crosshead is used to guide the bucket or other conveyance shall be equipped with:
- A device that prevent the bucket or other conveyance from being lowered below the bank if it is not accompanied by the crosshead.
- A device that will prevent the bucket or other conveyance and the crosshead from separating unintentionally anywhere in the shaft or warn the driver of such separation.
State the conditions to be met before any person shall work at the bottom of the shaft in the course of being sunk?
(16.93.4) No person shall work, be caused or permitted to work at the bottom of the shaft unless protected by a covering extending over the whole area of the shaft, leaving only enough space for the passage of a bucket, skip or other means of conveyance. In a vertical shaft such covering shall be placed not more than 25m from the bottom and in an incline shaft the covering shall be not more than 30m from the bottom.
When may persons enter the conveyance at the bottom of the shaft in the course of being sunk?
(16.93.5) No person shall enter the conveyance at the bottom of the shaft until such conveyance has been raised and lowered or until some other distinct signal has been received from the winding engine driver.
Explain the signal when blasting is about to take place in a shaft in the course of being sunk?
(16.93.6) The person in charge of blasting shall notify the driver by a special signal namely 5 rings when blasting is about to take place and, except when firing by electricity, the driver shall reply by raising and lowering the conveyance by about 2 m.
A small winding plant, the permit of which does not allow the conveyance of persons shall not be subjected to certain regulations, provided what?
(16.95.1) Provided that the manager or sub-ordinate manager shall appoint in writing a competent person to carry out the duties and examinations prescribed in regulation 16.74 and provided further that the engineer or competent person appointed in terms of regulation 2.13.2 shall appoint in writing a competent person to examine at least once in each week the items specified in regulation 16.74.1
For a small winding plant not requiring a permit what may be provided in place of the machinery record book?
(16.95.2) A record book or card index system may be provided in place of the machinery record book.
What shall the breaking strength of the winding rope be for a winder not requiring a prescribed permit?
(16.95.3) A winding rope may not be used for a winding plant not requiring a prescribed permit unless:
- Its breaking strength is at least 10 times the attached load, and
- The part of the winding rope attached to the conveyance or counterweight is cut off and re-terminated at intervals not exceeding 6 months.
What are the requirements before a chairlift installation may be used?
(16.105) No chairlift installation shall be used for the conveyance of persons unless it is permitted by a prescribed permit for such installation.
What are the requirements of the regulations where a chairlift is installed in a part of a mine where a winding plant operates?
(16.106) No chairlift shall be installed in any portion of a mine where a winding plant or moving machinery operates, unless the persons using and operating the chairlift are adequately protected from the conveyances, other winding equipment or moving machinery or unless it is so arranged that simultaneous operation of the chairlift and the winding plant or machinery is impossible.
What information shall accompany each application for permission to install, modify and use a chairlift?
(16.108) Each application for permission to install, modify and use shall be accompanied by:
- Dimensioned drawings in plan, elevation and section to the scale of at least 1 in 100.
- The manufacturer’s or supplier’s specifications of the proposed installation, and
- Full particulars of all ropes and chains intended for use in the installation.
What are the requirements of the construction of a chairlift installation?
(16.111.1) No chairlift shall be used unless it is of good construction, sound material, adequate strength and free from any defect.
How shall a chairlift be used?
(16.111.2) No chairlift shall be used unless it is so used that the safety of persons is not endangered.
How shall the axis of its line of operation be?
(16.111.3) No chairlift shall be used unless the axis of its line of operation between stations is a straight line.
What shall the slope of the hauling rope or traction chain be?
(16.111.4) No chairlift shall be used unless the slope of the loaded hauling rope or traction chain is less than 45º.
What shall the distance between the centre lines of two passing chairs be?
(16.111.5) No chairlift shall be used unless the distance between the centre line of two passing chairs is 900 mm or more.
What shall the distance between a chair and a handrail or sidewall be?
(16.111.5) No chairlift shall be used unless the distance between a chair and a handrail or sidewall is 500 mm or more.
What shall the clearance be from the centre line of a chair to the outside at the landing and boarding sites?
(16.111.5) No chairlift shall be used unless, at all boarding and landing sites, the clearance from the centre line of the chair to the outside is at least 1.5 m.
What shall the vertical clearance be between the underside of a chair loaded with a passenger and the terrain below?
(16.111.6) No chairlift shall be used unless the vertical clearance between the underside of a chair loaded with a passenger and the terrain below is not more than 1.5 m or not less than 0.3m.
What shall the minimum spacing of chairs be?
(16.111.7) No chairlift shall be used unless the minimum spacing in meters between two consecutive chairs are equal to or greater than:
- 4 × velocity in m/s for single seat carriers or
- 5 × velocity in m/s for two seat carriers where passengers board and leave simultaneously or
- 7 × velocity in m/s for two seat carriers where passengers board and leave one after the other.
What shall the gradient of the boarding and landing sites be?
(16.111.8) No chairlift shall be used unless the gradient at boarding and landing sites is not more than 6º.
What shall the length of the boarding and landing sites be?
(16.111.8) No chairlift shall be used unless the length of the boarding and landing sites is:
- 6 m if the installation is designed to convey less than 500 persons/hr, and
- 8 m if the installation is designed to convey 500 or more persons/hr or
- Equal to the minimum spacing of carriers, whichever is the greatest.
What is the maximum speed of operation of a fixed grip chairlift system?
(16.111.9) No fixed grip chairlift system shall be used unless the speed of operation does not exceed 1.5 m/s.
What is the maximum speed of operation of a detachable grip chairlift system?
(16.111.9) No detachable grip chairlift system shall be used unless the speed of operation does not exceed 3 m/s.
Describe the requirements of components being a source of danger to passengers?
(16.111.10) No chairlift shall be used unless all components which may be a source of danger to passengers are out of reach when seated normally on the chair.
Name the four types of carriers allowed in chairlifts?
(16.111.11) No chairlift shall be used unless the type of chairs used are approved by the principle inspector of mines and are either:
- Chairs with one seat equipped with a footrest.
- Chairs with two seats, providing a seating width of not less than 0.5 m/person and equipped with suitable footrests.
- Special, easily detachable receptacles attached to the chair or container to permit the transport of material, or
- Special stretcher carriers used for the transportation of stretcher cases.
What type of rope shall be used on a chairlift and what shall the bending stiffness comply with?
(16.112) Any rope used on a chairlift shall be made of steel wire and the bending stiffness of the rope shall be suited to the diameter of the sheaves.
May a chain be used as the traction chain on a chairlift?
(16.112.1) Any chain used as a traction chain on a chairlift shall be manufactured from a class of steel approved by the chief inspector of mines.
Describe the requirements when a traction chain or rope is used on a chairlift with the carriers running in or on a rope or rail circuit?
(16.112.3) Where a traction chain or rope is used on a chairlift with the carriers running on a rope a safety rope clamped to each carrier shall be provided to prevent runback in the event of the traction chain or rope breaking.
What shall the factor of safety be of the rope or chain used on a chairlift and explain the discard criteria?
(16.112.4) Any rope or chain forming part of a chairlift installation shall have a factor of safety of at least 6 calculated on its static load.
(16.112.2) No rope or chain shall be used on a chairlift if the calculated breaking force at any point is less than nine-tenths of the breaking force when it was new.
Describe the requirements for splices in ropes used with chairlift installations and when clamps are used?
(16.112.6) Splices in ropes forming part of a chairlift installation shall be made by experienced persons and the length of such splice shall not be less than 1200 times the rope diameter. Whenever clamps are used on ropes the clamps used shall be sufficient in number to ensure an sufficient joint.
How many splices shall be allowed and what shall the distance be between splices?
(16.112.7) Except with the written permission of the principle inspector of mines not more than two splices shall be allowed along a closed loop formed by a carrying hauling rope. Where more than one splice is made the distance between splices shall be at least 3000 times the diameter of the rope.
Describe the requirement for the force exerted by a carrying hauling rope on each supporting roller?
(16.113) The force exerted by a carrying hauling rope on each supporting roller shall be positive when the system is operating unloaded.
Describe the requirements for the carrier of a chairlift installation and swinging?
(16.114) The carrier of a chairlift installation shall be free to incline itself in the direction of travel with respect to the vertical by an amount equal to the inclination. Swinging shall be restricted within practical limits.
Describe the requirements for the passage of the carriers around the sheaves?
(16.115) The passage of the carriers around the sheaves shall not be a source of danger to passengers who have been unable to alight.
Give the requirements for the driving motor of a chairlift?
(16.116) The driving motor of a chairlift installation shall be:
- Of adequate power to ensure starting the chairlift under the most unfavourable conditions.
- Stopped automatically when any brake is applied or if any safety device is operated.
- Provided with a reverse phase relay or other protection to prevent the reversal of the driving motor through inadvertent reversal of the phases.
State the requirements that the brakes of a chairlift installation shall comply with
(16.117.1) Every chairlift installation shall be equipped with two independent brakes, a main brake and a backup brake, so designed that either brake is capable of holding, without slipping, the chairlift installation when loaded in such a way that the maximum static torque is produced on the brake. The provisions of this regulation are applicable even if the installation is fitted with a special device which will automatically prevent reverse movement of the carriers.
(16.117.2) Both brakes shall apply automatically when the power supply to the driving motor is interrupted or if any safety device is operated.
(16.117.3) The main brake of the chairlift shall operate on the driving sheave or on the shaft of the driving sheave and not on any intermediate shaft.
Explain the regulation regarding the emergency stopping device?
(16.118) An emergency stopping device, which interrupts the power supply to the driving motor, shall be provided along the full length of the chairlift installation and shall be so arranged that it can easily be operated by any passenger traveling on the chairlift.
What are the requirements regarding illumination at chairlift installations?
(16.119) Every boarding and landing site as well as the entire length of the chairlift installation shall be adequately illuminated at all times underground and at night on surface whenever the chairlift is in use.
Explain the statutory warning system that shall be operational at a chairlift?
(16.120.1) Every chairlift installation shall be equipped with an warning system, audible along the entire length of the installation, and shall operate automatically before the chairlift is set in motion, except where some other warning system is installed approved by the principle inspector of mines.
When is an emergency ladder way required at a chairlift installation and where is it situated?
(16.120.2) Every place where a chairlift is installed where the inclination exceeds 20º and where passengers are able to alight anywhere along its length when it is stationary, shall be provided with a emergency ladder way either separate from the installation or situated between the carriers.
Describe the duties of the chairlift attendants
(16.120.3) Where the ladder way is between the carriers chairlift attendants responsible for starting and stopping shall be stationed at each boarding and landing site and they shall ensure that the chairlift is not set in motion whilst persons are on the ladder way.
When shall a ladder way be supplied with a handrail?
(16.120.4) Where the ladder way is separate from, but next to the chairlift, it shall be provided with a smooth handrail separating it from the chairlift.
What material may a person carry with him while riding on a chairlift?
(16.121.1) No person shall travel on a chairlift with material other than articles which will not endanger him or any other person and for which permission has been given by the manager, mine overseer, engineer or competent person appointed in terms of regulation 2.13.2
(16.121.2) The manager shall cause a list to be kept at all boarding and landing sites of all articles for which permission has been granted and he shall ensure that all persons concerned are made aware of the articles included in the list.
May a person interfere with the equipment of a chairlift?
(16.122) No person traveling on a chairlift or in the vicinity of a chairlift installation shall interfere with the equipment of the chairlift or any other person traveling on the chairlift or in the vicinity of the chairlift.
Explain the inspection procedure of a chairlift installation?
(16.123.1) The complete chairlift installation or part thereof shall be examined regularly by such persons and at such intervals as may be determined by the engineer or competent person appointed in terms of regulation 2.13.2 considering the duty and frequency of operation of the installation. The principle inspector of mines may insist on more frequent inspections or inspections by such other persons as he may deem necessary.
(16.123.2) A written record of each such inspection shall be kept by the person responsible for the inspection in a book specially provided by the manager.