Case Study: Replacement guide rope into modified vent shaft with limited access

Requirements: Develop a plan to safely remove existing rope and install new guide rope.  The work was to be performed at an egress shaft which had been modified to act as a primary downcast ventshaft for the mine site.

A detailed procedure was developed in co-operation with site and contractor personnel.  The procedure was prepared to limit exposures and mitigate risks presented by restricted work spaces and limited communications. 

Engineering drawing packages were prepared for rigging fixtures to be installed in the headframe for rope handling.  The fixtures were installed within existing structural constraints created by fan shrouding in the headframe and the limited access to the shaft.

Existing winch equipment was evaluated and tested.  New rope anchors were designed and installed to allow maximum removal of the rope from the drum during moves.

On-site support was provided for all critical phases of the project including development, design, fixture installation and removal and installation of the rope.

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