Operations training
Slinger Signaller Standard / V4 2023-05-02
3.
Ensure rigging is checked for damage pre-use and post-use.
4. The lifting supervisor will provide all information regarding weights and CoG to all involved with the lifting operation. 5. Under guidance from the slinger signaller, the lorry shall reverse into position as shown in applicable drawing. Lower the crane hook to grade to attach the lifting accessories. 6. Hoist the crane hook until the accessories are above the height of the shipping container. Using boom, hoist and slew crane motions, position the accessories centrally above CoG of the container. 7. Slowly lower the crane hook so that the lifting points on the load can be connected to their relevant lifting accessories by the slingers. 8. 2 x 6.0m taglines will be attached to the load and transferred to the slingers. 9. Using hoist slew and luffing motions the signaller will instruct the crane operator to slowly take up the slack in the slings, so a final check will be made. 10. Ensure that the slings are correctly tensioned and that the hook and accessories are positioned centrally over the CoG of the load. 11. Check for loose items that could fall from the load when lifted. 12. The signaller will direct the crane operator to slowly raise the load 0.5m, so it is free from snags or obstructions, stop brake check! 13. Once satisfied the crane supervisor will instruct the lorry driver to slowly drive the transport vehicle out from under the suspended load. 14. The crane operator guided by the signaller will slew the load clockwise and boom down to approx. 16.0m radius until the container is suspended centrally above its required laydown position. Slowly lower into position. 15. The signaller will instruct the crane operator to lower the load until, with the assistance of the slingers, it is guided into its position. 16. Once correct positioning is confirmed, the crane hook will then be lowered to a point where the slings can be safely detached from the load. 17. Once the rigging has been removed the signaller will instruct the crane operator to hoist the slings/rigging clear of the container and slew anticlockwise. Be aware of slings snagging during this process) 18. Remove the accessories and store in their nominated storage location. 19. De-rig the crane, carry out housekeeping duties and depart the work area. 8. Drawings
Global Wind Organisation©2023 / www.globalwindsafety.org
55 / 73
Made with FlippingBook Annual report maker