Waterblasting is dangerous work with several inherent risks. The best way to keep workers safe is to put as many obstacles as possible between the danger and the worker, according to Gary Toothe, training manager for Federal Signal’s Environmental Solutions Group. He calls it the hierarchy of safety.“If an accident is going to happen, it has to make it through all my layers of safety instead of just one,” says Toothe. After all, there is usually a confluence of conditions that happens at just the right time that turns an event into an accident or a close call into an
