Friday, September 29, 2017

Critical Item: Power Transmission

Here are some things to consider when considering power transmission risks:

1. What hazards are generated from the power transmission?  Rotating shafts produce entanglement, gears can produce crush.  Take a full inventory of the activities and hazards.

2. Can these hazards and parts be made completely inaccessible to the operator while working?  Or is there access needed to these parts when making parts or products?  If no access is needed, fixed guards or interlocked guards are great applications.  Access to power transmission in order to produce parts might require presence sensing.

3. If you use fixed guards, what is the frequency of access required to the power transmission?  Frequent access for setup or service might require interlocking to ensure the guards remain in place.

4. If you are using fixed guards do they meet the CSA Z432-16 requirements?  Can you reach hazards around, under, through or over (AUTO)?

5. Can you design the guards so that service work does not require their removal?  Can grease points or lubrication be brought outside the guards so that removal for that work is not necessary.

Often in our inspections we see power transmission guarded, but guards that don’t meet requirements.  We almost always see guards that were designed without consideration for service work.  Take time and do a proper risk assessment with all affected parties that work with the power transmission.

Posted by Kristin Petaski at 7:53 AM 0 Comments