Checklist for Inspection & Testing of Tower Crane

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1. The tower crane was of the type submitted to the Occupational Safety and Health Department. 
2. All bolts/pins or connecting fasteners used are following the manufacturer’s design and are readily identifiable.
3. All mast sections have identification markings.
4. All mast parts are free from technical faults and corrosion that may affect their structural integrity and operational functionality.
5. Random samples of all bolts/pins or connecting fasteners used are non-destructively tested for any technical faults. 
6. Random samples of all slew ringbolts used are tested for any technical faults or damage. These bolts should be taken from positions on the slew ring that are commonly 90-degrees excluded and identified in some way that is indicative of their original position. 
7. The Non-Destructive Test (NDT) is conducted on the welding of the slew ring attachment to the slew ring mount. Make sure that the machine deck is free from any damage, corrosion or technical fault that may affect its structural integrity that may also affect its functionality.
8. The operator’s cabin is free from any technical faults that may affect its serviceable use.
9. A safety bar is installed across the crane operator’s cabin window for the safety purpose where there is the possibility of the operator falling through it.
10. An approved fire extinguisher is provided in the operator cabin.
11. An Emergency Stop Button (ESB), which will STOP the operation of the Tower crane engine, is installed in the operator cabin and accurately identified.
12. All controls are checked for correct identification.
13. The hydraulic system is free from any oil leaks.
14. All the brake and clutch mechanisms have been stripped and serviced.
15. An emergency load lowering device is fitted.
16. All rope anchorages are serviced.
17. All counter-weight attachments such as trolley, trolley wheels etc., are essentially serviced and free from any technical faults.
18. The cat-head including the tie-rods are free from any technical faults or defects that may affect its operational functionality.
19. All jib sections are free from any technical faults and corrosion that may affect their structural integrity and operational functionality.
20. All main cords on each jib section are thickness tested to detect internal corrosion.
21. All sheaves and bearings are free from any defects that may affect their serviceable use.
22. The hook, hook block, overhauling weight and associated attachments are free from wear and damage.
23. The climbing frame and equipment is free from any defects that may affect their serviceable use.
24. The foundation has been designed; and certified by a Professional Engineer of the relevant discipline and constructed accordingly.
25. The tower crane is sited as indicated in the layout plans endorsed by the Occupational Safety and Health Division.
26. The installation is following the configuration and manufacturer’s instructions.
27. The bolts/pins or other connecting devices and equipment such as fasteners used for the bottom 3-mast sections are new ones.
28. The tower crane is plumbed to check that it is vertical.
29. All the pins/bolts or fasteners used for the assembly are fitted with safety pins or locking pins.
30. Bolts are tightened to the correct torque.
31. Tie rods to the boom and jibs are securely fastened.
32. Tie-backs are fastened as designed.
33. Secure and recommended fixed access ladders are provided and installed appropriately for access to all serviceable parts of the tower crane.
34. The tower crane is load tested at both its maximum and minimum working radii with sufficient load.
35. Limit switches are tested:
36. over hoist limit switch b) overload limit switch 
37. trolley limit switch
38. slewing limit device
39. A load-radius indicator with a warning signal is installed and in good working condition.
40. All safety devices and brakes are checked.
41. The wind anemometer is installed and in good working condition.
42. Anti-collision devices are tested appropriately to halt the tower crane’s operation such that the crane-to-crane interference must be maintained at not less than 3-meters.

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Checklist for Inspection & Testing of Tower Crane