Contingency Fees Act, 1997
R 385.00
Mine Health and Safety Act, 1996 (Act No. 29 of 1996)RegulationsGuideline for a Mandatory Code of PracticeSafe Use of Conveyor Belt Installations for the Transportation of Mineral, Material or PersonnelAnnexuresAnnexure B: Minimum Performance StandardsConveyor System Protection DevicesTake-up over-travel |
Over-travel limit switches can be placed at the far extremes of the counterweight or take-up device travel.
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Comment: Use of over-travel limit switches is considered good practice even for section conveyors, but the use thereof for section conveyors may be omitted if justified in terms of the risk assessment. |
In a gravity counterweight take-up, the top over-travel switch trip may suggest a jammed conveyor fabric condition.
A bottom over-travel switch may indicate belt stretch, or a broken belt fabric flight. Excessive take-up motion during starting and stopping indicates an inadequate or malfunctioning drive control.
Alternatively, excessive travel could indicate that one or more splices are failing or have failed.
