The subject of this specification is safety detaching hooks for mine shaft conveyances.
According to South African Law1 it is a legal requirement for all winding systems, where the end of the winding rope is fastened to the drum of the winding engine, to be fitted with a safety detaching hook. The main purposes of a safety detaching hook are to detach the winding rope from the conveyance in the event of an overwind and to support the conveyance in the headgear after such an event.
This specification stipulates minimum requirements for the:
- testing, and
- quality assurance of safety detaching hooks in use on mines in the Republic of South Africa.
General guidelines for the installation and operation of safety detaching hooks are attached as Appendix A.
The purpose of this specification is to ensure minimum safety standards and uniformity on all South African Mines.