1 / 32

Cranes, Derricks, Hoists, Elevators, & Conveyors for Construction

Cranes, Derricks, Hoists, Elevators, & Conveyors for Construction. Manufacturer's specs/limitations. Comply with them Specs not available? Attachments for cranes. 1a. Conspicuously post. Rated load capacities Recommended operating speeds Special hazard warnings Instructions. 2a.

ljohns
Télécharger la présentation

Cranes, Derricks, Hoists, Elevators, & Conveyors for Construction

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Cranes, Derricks, Hoists, Elevators, & Conveyorsfor Construction

  2. Manufacturer's specs/limitations • Comply with them • Specs not available? • Attachments for cranes 1a

  3. Conspicuously post • Rated load capacities • Recommended operating speeds • Special hazard warnings • Instructions 2a

  4. Hand signals operators • Prescribed by ANSI standard • Post illustration of signals 3a

  5. Competent person • Inspect equipment • Prior each use • During use • Safe operating condition • Annual inspection • Maintain records 4a

  6. Wire rope • Take out of service • ANSI B 30.5-1968 • SAE J959-1966 5a

  7. Belts, gears, exhaust pipes • Reciprocating, rotating, moving parts • Guarded if dangerous • ANSI B 15.1-1958 Rev. 6a

  8. Belts, gears, exhaust pipes • Guard/insulate exhaust pipes • Internal combustion engines • Test enclosed spaces 6b

  9. Crane swing radius hazards • Barricade • Prevent struck-by • Prevent crushed-by 7a

  10. Fuel transportation • 29 CFR 1926 Subpart F • On public highways • 49 CFR Parts 177 and 393 8a

  11. Fire extinguishers • Accessible • 5BC rating • All operator stations/cabs 8b

  12. Clearance near electrical lines • 50 kV minimum 10 feet • Over 50 kV 10 feet plus 9a

  13. Equipment in transit • Less than 50 kV 4 feet • Over 50-345 kV 10 feet • Up to 750 kV 16 feet 9b

  14. Observer • Visual means difficult • Designate observer • Warn operator 9c

  15. Modifying equipment • Get written approval • Change signage • Original safety factor • Employee safeguarding 10a

  16. Personnel platforms • Don’t use a crane • Exceptions • Hoisting procedure • Load line strength • Uniformly level • Total weight 11a

  17. Personnel platform design • Qualified engineer/qualified person • Support capabilities • Guardrail system • Grab rail installed • Access gates 12a

  18. Personnel platform design • Standing headroom • Hard hats • Overhead protection • Marked accordingly • Rated load capacity 12b

  19. Personnel platform use • Abide by work needs • Employees, tools, materials • Not just materials/tools • Secure materials/tools • Evenly distribute 12c

  20. Trial lifts • Unoccupied personnel platform • Load to equal lift weight • Made from ground level 13a

  21. Operator checks • Systems, controls safety devices • No interferences exist • 50% limit/rated capacity 13b

  22. Inspection after trail lift • Competent person inspects • Crane or derrick • Rigging 14a

  23. Inspection after trail lift • Personnel platform • Base support • Determine defects/adverse effects 14b

  24. Proof testing • Proof test to 125% rated capacity • Competent person inspects • Correct deficiencies 15a

  25. Personnel platform safety • Body parts inside platform • Secured to structure • Operator remains at controls • Indication of danger • Continuous sight of Operator • Body belt/harness system 16a

  26. Traveling and hoisting • Prohibited • Exception to rule • Travel restrictions 17a

  27. Pre-lift meeting • Contents • Review requirements/procedures • Crane operator • Signal person • Employee to be lifted • Person responsible • Each new work location 18a

  28. Helicopter cranes • Comply with FAA • Conduct briefing • Plan of operation 19a

  29. Material hoists • Mfg's specs/limitations • Post information • Defective wire rope 20a

  30. Hoist operating rules • Established and posted • Signal system • Allowable line speed • Post on car frame • "No Riders Allowed" 21a

  31. Overhead hoists • Safe working load • Supporting structure load • Hoist installation • Air hoists • Mfg’s specifications 22a

  32. Conveyors • Audible warning signal • Emergency stop switches • Guard screw conveyors • Working blew conveyor • Mark all crossovers • Lockout/tagout • ANSI B20.1-1957 23a

More Related