Key Highlights
Safe Distance Regulations
The Occupational Health and Safety Act for Industrial Establishments states that a lifting device shall be operated in such a way that no part of the load passes over any worker.
Furthermore, hoisting controls operated from other than a cab or cage shall be located so that they can be operated at a safe distance from the load being lifted.
Pendent vs. Wireless Controls
Pendent controls are used in a large number of factories in North America. Unlike wireless controls, pendent controls are secured to the bridge of the crane. While they allow movement along the bridge, they restrict the operator to a specific radius—usually just a few feet in front of or behind the bridge.
If the operator is free to stand a safe distance from the load by placing themselves below the bridge, the situation should not present a problem. Unfortunately, this is not always the case in crowded facilities.
The Danger of Obstacles
Aisle ways or obstacles often prevent the overhead crane operator from walking or standing a safe distance from the load. The operator is often forced to walk in front of or behind the load and cannot maintain a safe distance because the cable length restricts them.
Additionally, keeping loads close to the floor reduces the safe distance required. However, stacking requirements often force loads to be elevated, which increases the radius of the "danger zone" should a failure occur.
The Solution: Modifications to plant layout or upgrading to wireless controls may allow an overhead crane operator to stand a greater distance from a load, significantly improving workplace safety.
