As part of a major upgrade by Babcock to the Rosyth Dockyard, new overhead travelling cranes (OTC’s) have been built and installed by Street Crane Company. Within the package, eight old overhead cranes have been removed and replaced by 19 high specification cranes. The new equipment ensures more efficient and flexible mechanical handling and lifting, with modern standards of safety and performance.
Rosyth is upgrading its facilities to support on-going commercial, marine and offshore projects. To achieve greater flexibility and productivity, the assembly and fabrication bays have been fitted with multiple heavy lift cranes ranging in capacity from ten to 35 tonnes safe working load. All cranes are of double girder construction and benefit from a combination of Street’s advanced ZX hoists and VX custom-built hoists.
Crane efficiency and high levels of availability are assured with heavy usage duty ratings specified on cranes intended for intensive use allied with operational speeds designed to give efficient load movement. For optimum stability all crane motions are controlled by variable frequency inverter control which offers smooth step-free drive acceleration and deceleration characteristics. Digital load displays and mandatory overload protection keeps lifting within prescribed safe limits. Other safety equipment installed includes anti-collision systems, floodlights, flashing approach lights and audible alarms. Control by radio remote allows operators to seek a position that gives greatest safety and visibility. Pendant control provides a failsafe back-up.
Sales director Chris Lindley-Smith commented, "This is a major facilities upgrade programme and we are delighted that our overhead travelling cranes were selected to meet the critical demands of this significant project." Street Crane completed the installation in September with testing and commissioning through October.