A subcontractor was notified by the general contractor that there was a possible electrical metal clad cable cut during our transfer air duct installation two nights previous. When questioned, the foreman stated that he cut out the 12x24” hole through the drywall with a reciprocating saw and installed the transfer air duct immediately following. No indication that an metal clad cable was present or had been cut was visible. After investigating, an metal clad cable was found above the acoustic ceiling and was cut.
Factors to consider at your site or on your project include, but are not limited to, the following:
- Reduce hazard acceptance by ensuring that craftsmen understand and follow the procedure that addresses steps to reduce hazards prior to demo/renovation.
- Develop a procedure for demo/renovation.
- Review and provide the right tools for demo/renovation work. Penetrations into walls should start with hand tools (hole saw, hammer, razor knives, etc.)
- Require craftsmen to reduce the length of the reciprocation saw blade. The length of the saw blade should be determine by the thickness of the material to be removed.