C. 6. Outlets, Ladderways And Travelling Ways Flashcards
Where shall First aid equipment and an adequate supply of disinfectant be kept underground?
6.3.2.11 First aid equipment and an adequate supply of disinfectant shall be kept at points underground not more than 1000 metres from any place where mining operations are being conducted.
Why shall the manager notify the supplier of such power when electricity or compressed air for operating winding, ventilation or pumping machinery is used?
6.3.2.2 If electricity or compressed air for operating winding, ventilation or pumping machinery is purchased, the manager of the mine shall notify the supplier of such power of the importance of ensuring that interruptions of supply shall be as infrequent and of as short a duration as possible.
When must hoisting arrangement be provided for persons?
6.4 Hoisting arrangement shall be provided for every person who has to ascend in a vertical or inclined shaft, winze or other working, when the height to be ascended exceeds 150 metres measured vertically.
When shall a proper ladderway be provided?
- 5.1 Except as is permitted in terms of regulation 6.5.2.1 a proper ladderway shall be provided when the inclination from the horizontal exceeds 20 degrees-
a) Installation of ladders in shaft or outlet to surface-in a shaft or outlet to surface if, according to the provisions of regulation 6.3.1, such shaft or outlet is allowed to afford the only means of egress to the surface for persons employed in underground workings;
b) Installation of ladders in connection to a shaft or outlet-in a connection, or a part thereof, from any part of the underground workings to a shaft or outlet to surface if such connection, or part thereof, affords the only means of egress to a shaft or outlet to surface for persons employed in any working place; and
c) Installation of ladders in sinking shafts-in a shaft or winze in the course of sinking. In this case the ladderway shall be provided to within such distance from the bottom of the said shaft or winze as is the minimum necessary to secure the ladderway from damage during blasting. From the lower end of such ladderway to the bottom of the shaft or winze there shall be provided-
i. chains, chain ladders or wire rope ladders where the inclination is more than 35 degrees and less than 70 degrees;
ii. chain ladders or wire rope ladders where the inclination is 70 degrees or more.
When do you not need to provide a ladderway?
- 5.2.1 The provisions of regulation 6.5.1 shall not apply if at least 2 winding plants of adequate capacity are kept available for immediate use to convey persons and if adequate power for winding purposes from at least 2 independent sources is provided at the winding plants so that in the event of failure of the power supply from one source the supply from the others will be readily available. When the winding plant s are operated by electric power obtained from a sub-station by way of a complete ring circuit or duplicate supply lines and the sub-station is fed from a main power system through a complete ring circuit or duplicate supply liens, such an arrangement of circuits shall be deemed to constitute 2 independent sources of supply.
- 5.2.2 If there are only 2 winding plants and one of these is a stand-by plant, the stand-by plant shall be tested once daily with at least the load equivalent to the total mass permitted for persons by running the conveyance or the conveyances for a complete trip down and up the winding compartments. In the event of such stand-by winding plant depending for its operation on power generated at the mine, sufficient fuel and essential stores for the generation of power for the operation of the winding plant shall be kept at the mine.
What provisions shall be applied to every ladder or stairway in or on a mine or at a works?
- 6 The following provisions shall apply to every ladder or stairway in or on a mine or at a works-
- 6.1 Where the inclination from the horizontal is more than 20 degrees and less than 70 degrees the ladder shall not be continuous over a greater distance than 16 metres.
- 6.2 Where the inclination from the horizontal is 70 degrees or more each section of any stairway or ladder shall be-
a) not more than 10 metres in length without a break;
b) provided with resting places or resting platforms at the breaks; and
c) installed in such a manner that the bottom end is not aligned with a hatchway in a resting place or resting platform. - 6.3 Where the inclination from the horizontal is more than 35 degrees the ladder shall project at least one metre above the mouth of the shaft, winze or other excavation and above every resting place, except when a strong handrail is fixed at such mouth or resting place.
- 6.4 Every permanent ladder or stairway with-
a) an inclination of 75 degrees or more from the horizontal; and
b) a total height exceeding 5 metres,
shall be enclosed by a cage provided with a backrest which shall-
i. at no point be more than 700 millimetres from the rungs of the ladder; and
ii. extend from a point 2 metres or less from the base of the ladder to a point at least 900 millimetres beyond the resting place or resting platform at the top of the stair way or ladder. 6. 6.5 No ladder shall be fixed in an overhanging position. 6. 6.6 Every ladder shall be- a) of strong construction; b) securely fastened to the timbering or wall of the shaft, winze or other excavation; and c) maintained in good repair.
When shall a wire rope or a strand of wire rope not be allowed to be used for climbing?
6.7 A wire rope or a strand of wire rope shall not be allowed to be used for climbing purposes in a mine if the rope or strand is kinked, knotted or contains broken or projecting wires.
Fill in the missing words:
6.8 In every vertical shaft and in every shaft having an inclination from the horizontal of 45 degrees or more any compartment regularly used as afoot travelling way shall be securely _________ off from any other compartment. Where the inclination is more than 10 degrees and less than 45 degrees such compartment shall be securely ________ off to a height of at least ______ metres above the ladder measured normal to the dip: Provided that any such shaft may be exempted from the provisions of this regulation by the Principal Inspector of Mines if it is not used for winding purposes.
6.8 In every vertical shaft and in every shaft having an inclination from the horizontal of 45 degrees or more any compartment regularly used as afoot travelling way shall be securely bratticed off from any other compartment. Where the inclination is more than 10 degrees and less than 45 degrees such compartment shall be securely bratticed off to a height of at least 1,5 metres above the ladder measured normal to the dip: Provided that any such shaft may be exempted from the provisions of this regulation by the Principal Inspector of Mines if it is not used for winding purposes.
At what height shall every main travelling road in a mine be maintained at?
6.10 Every main travelling road in a mine shall be maintained at a height of at least 1,8 metres or at such lesser height as the Principal Inspector of Mines may, in writing, permit. For the purpose of this regulation “main traveling road” shall mean a road used by the main body of any shift employed in the mine for travelling to and from their working places and, where the mine is divided into sections or districts, the road used by the main body of the men employed in such section or district.
What does “main travelling road” mean?
“main traveling road” shall mean a road used by the main body of any shift employed in the mine for travelling to and from their working places and, where the mine is divided into sections or districts, the road used by the main body of the men employed in such section or district.
