2015 CRW - Uncovering the Root and Causes of Crane Accidents
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This session will examine several crane incidents in-depth and identify the root cause of each ¡ª which often times is not the originally reported cause. Mr. Meissner will also share what additional safety measures should be implemented to help prevent future similar incidents on your own jobsites. Speaker: Klaus Meissner, Terex Crane
2015 CRW - Uncovering the Root and Causes of Crane Accidents
- 1. Uncovering the Root Causes of Crane Accidents Klaus Meissner Director Product Strategy, Terex Cranes
- 2. Root Causes of Accidents with Mobile Cranes ? Why talking about Root Causes? ? Technical Topics vs Behavioral Issues ? More Sensors = higher Level of Safety? ? Is ¡°Hope¡± really a Business Principle?
- 3. 1st Accident by overload, 2nd Accident (this picture) due to improper repair
- 4. Underestimating the wind load on ¡°light loads with large sail areas¡±
- 5. Austria ¨C crane out of service, wind from the front, excessive damage, insurance (?)
- 6. Sweden, broken Slings, damages only
- 7. Norway, unknown load, outrigger forces exceed ground bearing capacity
- 8. USA, 4 Cranes lifting one load, CoG unclear, overloading one crane
- 9. Traveling at night on soft ground, Derrick Ballast grounded, crane pulled over, damages
- 10. Sweden, incorrect maintenance of hoist rope, no test lift during man basket use, 2 fatalities
- 11. The Netherlands, wind on load, boom pushed back, damages
- 12. Crane Accidents ¨C Root Causes
- 13. Crane Accidents ¨C Root Causes
- 14. Crane Accidents ¨C Root Causes
- 15. Crane Accidents ¨C Root Causes
- 16. Proper Repair and Maintenance
- 17. Mexico, insufficient inspection and maintenance, 1 fatality
- 18. /IKEA instruction manual/ Crane Accidents ¨C Correct Assembly
- 19. ¡ is such incident avoidable by advanced controls systems?
- 22. More Sensors = higher Level of Safety? ¡ how much control do we want/accept?
- 23. Risk = Likelihood of Occurrence multiplied by Amount of Exposure/Cost
- 24. Men Machine Interface ¨C The human factor
- 25. Crane Accidents ¨C Root Causes
- 26. UK, RCL setting wrong, damage only
- 27. Italy, RCL setting wrong, 1 fatality
- 28. Failure to Plan is Planning for Failure
- 29. Spain, change of plan, grounded SL- CWT pulls mast over, 1 fatality
- 30. PLAN: Develop a Plan DO: Act according to Plan CHECK: Are Conditions as per Plan? ACT: ¡Take Action if needed
- 31. 3.18 mobile crane ? self powered jib crane capable of traveling loaded or unloaded without the need for fixed runways and relying on gravity for stability. /¡/ ? NOTE 1 Mobile cranes can operate on tires, crawlers or with other mobile arrangements. In fixed positions they can be supported by outriggers or other accessories increasing their stability. /¡/
- 33. Ground & Center of Gravity Angle of Repose
- 34. Symmetrical Loading Symmetrical Loading to the Front Non-Symmetrical Loading Top View on Crawler car Body, Crawlers turned to better indicate Shape Symbol indicates Centre of Gravity Symbols indicate Ground Pressure under Crawler
- 35. Traveling on site, unsymmetrical setup of crawlers, damages
- 36. Traveling onto mats, shifting load distribution, moving CoG, damages
- 37. Traveling on site, high loading, ground gives way, 5 fatalities
- 39. 39