Ensuring Crane Safety

摘要

During reassembly of an upgraded turbine in the 41.7-MW Powerhouse 2 at Puget Sound Energy's 69.7-MW Sno-qualmie Falls project, the crane cable detached from the winch drum. The cable and a 150-pound draft tube liner segment dropped onto the work platform, where four PSE employees were working. Fortunately, the crew suffered only minor cuts and bruises during this incident, which occurred in July 2004.rnPSE reviewed the incident and determined that the cause was a combination of improper fittings on the cable ends and the crane hook being extended beyond its lower limit.