sec.279Safety factors for winder and slope haulage ropes

### sec.279 Safety factors for winder and slope haulage ropes The site senior executive for an underground mine must ensure each rope used at the mine has at least the following safety factor— for a slope haulage rope—8; for a winder rope, other than a friction winder rope— used for winding persons in a shaft in which persons, materials or minerals may be wound—the safety factor worked out under the following formula— 7.5 – 0.001L where L is the depth of the wind measured in metres; or used for winding materials or minerals in a shaft in which persons, materials or minerals may be wound—the safety factor worked out under the following formula— 5.5 – 0.0003L where L is the depth of the wind measured in metres; or used for winding machinery at less than 2m/s in a shaft in which persons, materials or minerals may be wound—5; or used for winding materials or minerals in a shaft in which only materials or minerals may be wound—4.5; or for a friction winder rope used in a shaft in which persons, materials or minerals may be wound by a single rope—the safety factor worked out under the following formula— 7.5 – 0.001L where L is the depth of the wind measured in metres; for a stage rope used in shaft sinking—6. s 279 amd 2019 SL No. 250 s 13 - (a) for a slope haulage rope—8; - (b) for a winder rope, other than a friction winder rope— (i) used for winding persons in a shaft in which persons, materials or minerals may be wound—the safety factor worked out under the following formula— 7.5 – 0.001L where L is the depth of the wind measured in metres; or (ii) used for winding materials or minerals in a shaft in which persons, materials or minerals may be wound—the safety factor worked out under the following formula— 5.5 – 0.0003L where L is the depth of the wind measured in metres; or (iii) used for winding machinery at less than 2m/s in a shaft in which persons, materials or minerals may be wound—5; or (iv) used for winding materials or minerals in a shaft in which only materials or minerals may be wound—4.5; or - (i) used for winding persons in a shaft in which persons, materials or minerals may be wound—the safety factor worked out under the following formula— 7.5 – 0.001L where L is the depth of the wind measured in metres; or - (ii) used for winding materials or minerals in a shaft in which persons, materials or minerals may be wound—the safety factor worked out under the following formula— 5.5 – 0.0003L where L is the depth of the wind measured in metres; or - (iii) used for winding machinery at less than 2m/s in a shaft in which persons, materials or minerals may be wound—5; or - (iv) used for winding materials or minerals in a shaft in which only materials or minerals may be wound—4.5; or - (c) for a friction winder rope used in a shaft in which persons, materials or minerals may be wound by a single rope—the safety factor worked out under the following formula— 7.5 – 0.001L where L is the depth of the wind measured in metres; - (d) for a stage rope used in shaft sinking—6. - (i) used for winding persons in a shaft in which persons, materials or minerals may be wound—the safety factor worked out under the following formula— 7.5 – 0.001L where L is the depth of the wind measured in metres; or - (ii) used for winding materials or minerals in a shaft in which persons, materials or minerals may be wound—the safety factor worked out under the following formula— 5.5 – 0.0003L where L is the depth of the wind measured in metres; or - (iii) used for winding machinery at less than 2m/s in a shaft in which persons, materials or minerals may be wound—5; or - (iv) used for winding materials or minerals in a shaft in which only materials or minerals may be wound—4.5; or