2009 Face Conference Orosha Cranes Wooley


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2009 Face Conference Orosha Cranes Wooley

  1. 1. Cranes
  2. 2. Arriving on Site Identify Process Danger Areas Starting Point PPE
  3. 3. Visual evaluation of crane operation walking up to site Evaluate Problems or No Yes Do Inspection Ownership Imminent Danger? General Sub- Contractor Contractor Inspection Mobile Specializing Do Inspection in crane work? No Yes Crane Inspection Process Do Inspection No Inspection
  4. 4. Crane Inspection Outline Visual Evaluation of the Work Is the crane operating smoothly? Is there an oiler? Is the set up level? Are the outriggers fully extended? Are all outriggers on the ground? General Contractor Questions Do you own the crane? Who owns the crane? If general contractor owns crane, inspect and continue with questions below If Subcontractor owns crane, open with them and determine whether an inspection of the crane is necessary How long has the crane been onsite? How long is it going to be here? Is the operator doing the calculations? Is the operator responding to signals? Is the operator operating the crane safely? When does the operator have a break or lunch? Is it scheduled?
  5. 5. Crane Inspection Outline Inspect the crane when the operator has a break, at the slowest part of the day, or when the process is complete. Inspection on Convenience Walk around crane Are signs posted? Is the boom marked? Evaluate the rigging Evaluate driver’s cab Is the operator’s manual in the cab Review manual to find out about crane operation Do tires need to be in the air? What is the weight the crane is lifting? Short outriggers? Does the front foot need to be down? Is there a fire extinguisher? What is the condition of the glass?
  6. 6. Crane Inspection Outline Evaluate operator’s cab Check to see the boom angle indicator is working (either on boom or in operator’s cab) Are outriggers locked? Are there load charts? Is there a fire extinguisher? Are the controls marked? Check for anti-two block/warning device Check housekeeping Is there agreement on hand signals and are they posted? What is the condition of the windshield and wipers? Check to see there are inspection records - daily, weekly, monthly Are there maintenance records? Does the operator have a license to operate the crane? 5 ton or greater? No deficiencies, don’t go into sheaves
  7. 7. Crane Inspection Outline If deficiencies: Check sheaves Check lines Is anti-two block operable? Is the deck free from grease and oil? Are there counterweights? Do they have stickers? How is the equipment rigged? Spliced together through shackles? Is nylon used on sharp edges? Are spreader bars/cables all stamped? Check outrigger pads Check cribbing Is the ball secured when traveling? Headache ball and main block? Is swing break and house lock locked?
  8. 8. Crane Inspection Outline Talk to Oiler Have signals been worked out with operator? What are they? Certification/Training Does the operator have a card? Have they had hands on training? Have they had ongoing training? What are the hours?
  9. 9. Cranes • Types – rubber-mounted – track – rough-terrain – tower
  10. 10. C o m C p r o a n n e e n t s
  11. 11. Cranes Process steel erection setting walls & trusses bridges equipment installation
  12. 12. Cranes Process floor system pouring concrete
  13. 13. Cranes Pre-planning What does the site look like? What is being lifted?
  14. 14. Cranes Pre-planning What kind of crane is available?
  15. 15. Cranes Pre-planning How close can the operator get to what is being lifted?
  16. 16. Cranes Pre-planning What is the line of travel?
  17. 17. Shakeout area
  18. 18. Shakeout area
  19. 19. Cranes Set-up site preparation positioning of crane maintaining clearances
  20. 20. Cranes Set-up assembling & disassembling crane stability use of outriggers
  21. 21. Cranes Set-up dunnage/cribbing lifting on rubber leveling the crane
  22. 22. Cranes Load chart overloading the crane will cause the crane to tip or fall
  23. 23. Cranes Load chart safe lifting capacity of the crane is determined by applying and interpreting load charts
  24. 24. net capacity parts of capacity line deduction areas of boom operation Lifting angle Capacity rated boom capacity length load radius configuration
  25. 25. 1. Configuration The crane should be assembled according to the manufacturer’s requirements for the load chart used
  26. 26. 2. Areas of operation over the over the side back over the over the front side
  27. 27. 3. Boom length
  28. 28. 4. Load radius The horizontal distance from the center of the crane to the center of gravity of the load with the load suspended.
  29. 29. 5. Boom angle
  30. 30. 6. Capacities Rated capacity Sum of the weight of the lift, attachments, rigging, hooks etc. Net capacity Lift that can be made
  31. 31. 7. Capacity deduction • crane not set up properly/level • crane not in good condition • high winds • side loading
  32. 32. 7. Capacity deduction • increase in load radius • dynamic loading • shock loading • high speed production
  33. 33. 8. Parts of the line
  34. 34. Cranes Static Load Dynamic load caused by the stationary sudden Dynamic Load Lift lowered movement in the load Lift stopped
  35. 35. Cranes Static Load Static load weight of the stationary Dynamic Load gross load Lift lowered when the load is stationary Lift stopped
  36. 36. Cranes Signals qualified person to direct operator
  37. 37. Cranes Signals signals need to be uniform throughout company and clearly understood
  38. 38. Cranes Signals special signals can be used when conditions exist that are not covered
  39. 39. Cranes • Rigging types – slings – shackles – block – softeners – hook – tag lines – spreader bar
  40. 40. Rigging inspection
  41. 41. Rigging inspection
  42. 42. Personnel platforms
  43. 43. Cranes Safety Hazards falling objects fall protection caught-between
  44. 44. Cranes Safety Hazards struck-by tipped crane electrical
  45. 45. Cranes Health Hazards noise dust vehicle exhaust
  46. 46. Cranes Ergonomics forceful exertions awkward postures vibration
  47. 47. Cranes • Worker PPE – hard hats – fall protection – eye & hearing protection