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Chapter 12 Safety regulations for use Slide 1 of 28 © Copyright TABLE OF CONTENTS 1 Requirements for crane operators 2 What is an overhead travelling crane? 3 Applications 4 Accidents with overhead travelling cranes 5 Laws – Regulations – Standards 6 Construction of overhead travelling cranes 7 Electrical system and equipment 8 Safety equipment / switches 9 Wire rope for winch 10 Documentation / certification 11 Inspection and maintenance 12 Safety regulations for use
Slide 2 of 28 © Copyright Chapter 12 Safety regulations for use 12.1 BEFORE OPERATING A basic requirement for operating a crane, is that the crane is “legal” to use Documentation Necessary documentation and periodic expert inspection must be met in accordance with the Labour Inspection’s regulations.
Slide 3 of 28 © Copyright Chapter 12 Safety regulations for use 12.1 BEFORE OPERATING Maintenance journal It is assumed that the employer has established a system for continuous inspection and maintenance of crane and equipment, and that this can be documented with a maintenance journal Operations log For cranes operated by several operators there should be an operations log, where the crane operators, at the end of the work day can record information of importance for further safe operation of the crane. Before operating the crane, the incoming operator should always look for messages in the operations log. The operations log be combined with the maintenance journal.
Slide 4 of 28 © Copyright Chapter 12 Safety regulations for use 12.1 BEFORE OPERATING Daily inspection / checklist All hazardous work equipment must be inspected: - before start - under use - after use For overhead travelling cranes the daily check points are described thoroughly in the user manual, preferably with text and pictures.
Slide 5 of 28 © Copyright Chapter 12 Safety regulations for use 12.1 BEFORE OPERATING Before a lifting operation the following has to be carried out by the crane operator: 12 CHECKPOINTS BEFORE USE 1.Make sure that radio control / control equipment is applicable to the actual crane. 2.Check the power supply and location of main switch. 3.Make sure that the wire rope lies properly on the drum, in the winder and on the discs. 4.Check for oil leaks / oil dripping on the floor where the crane has been parked. 5.Check the labelling of the crane’s direction symbols up against the control pendant and local conditions. 6.Check that no driving movements are initiated when the emergency stop button is pushed.
Slide 6 of 28 © Copyright Chapter 12 Safety regulations for use 12.1 BEFORE OPERATING 7.Unlock the emergency stop by turning the red button clockwise, and pressing the start button. 8.Function test the crane by running the hook up and test that the stop switch works. 9.Run the hook block down and make sure that the protection around the wire rope sheaves is intact without any damage, and that the swivel bearings and the hook latch are working. 10.Run the crane in the designated work area with respect to any obstacles, and test the limit switches for running trolley and crane bridge. 11.Test signalling devices. 12.Sign for control carried out on checklist.
Slide 7 of 28 © Copyright Chapter 12 Safety regulations for use 12.2 DURING OPERATION The crane operator must be aware of any unusual noise from the overhead travelling crane’s various moving parts and components during operation. This is especially important for the lift machinery with wire rope, blocks and wiring, as well as any suspicious sounds from the wheels and machinery for running bridge and trolley.
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