Cranes, Derricks, Hoists, Elevators, & Conveyors for Construction.
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Transcript of 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
Hand signals operators
• Prescribed by ANSI standard
• Post illustration of signals
3a
Competent person
• Inspect equipment • Prior each use• During use
• Safe operating condition
• Annual inspection
• Maintain records
4a
Wire rope
• Take out of service
• ANSI B 30.5-1968
• SAE J959-1966
5a
Belts, gears, exhaust pipes
• Reciprocating, rotating, moving parts
• Guarded if dangerous
• ANSI B 15.1-1958 Rev.
6a
Belts, gears, exhaust pipes
• Guard/insulate exhaust pipes
• Internal combustion engines
• Test enclosed spaces
6b
Crane swing radius hazards
• Barricade
• Prevent struck-by
• Prevent crushed-by
7a
Fuel transportation
• 29 CFR 1926 Subpart F
• On public highways
• 49 CFR Parts 177 and 393
8a
Fire extinguishers
• Accessible
• 5BC rating
• All operator stations/cabs
8b
Clearance near electrical lines
• 50 kV minimum10 feet
• Over 50 kV 10 feet plus
9a
Equipment in transit
• Less than 50 kV 4 feet
• Over 50-345 kV 10 feet
• Up to 750 kV 16 feet
9b
Observer
• Visual means difficult
• Designate observer
• Warn operator
9c
Modifying equipment
• Get written approval
• Change signage
• Original safety factor
• Employee safeguarding
10a
Personnel platforms
• Don’t use a crane
• Exceptions
• Hoisting procedure
• Load line strength
• Uniformly level
• Total weight
11a
Personnel platform design
• Qualified engineer/qualified person• Support capabilities• Guardrail system • Grab rail installed • Access gates
12a
Personnel platform design
• Standing headroom
• Hard hats
• Overhead protection
• Marked accordingly
• Rated load capacity
12b
Personnel platform use
• Abide by work needs
• Employees, tools, materials
• Not just materials/tools
• Secure materials/tools
• Evenly distribute
12c
Trial lifts
• Unoccupied personnel platform
• Load to equal lift weight
• Made from ground level
13a
Operator checks
• Systems, controls safety devices
• No interferences exist
• 50% limit/rated capacity
13b
Inspection after trail lift
• Competent person inspects
• Crane or derrick
• Rigging
14a
Inspection after trail lift
• Personnel platform
• Base support
• Determine defects/adverse effects
14b
Proof testing
• Proof test to 125% rated capacity
• Competent person inspects
• Correct deficiencies
15a
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
Traveling and hoisting
• Prohibited
• Exception to rule
• Travel restrictions
17a
Pre-lift meeting
• Contents – Review requirements/procedures– Crane operator– Signal person– Employee to be lifted– Person responsible – Each new work location
18a
Helicopter cranes
• Comply with FAA
• Conduct briefing
• Plan of operation
19a
Material hoists
• Mfg's specs/limitations
• Post information
• Defective wire rope
20a
Hoist operating rules
• Established and posted
• Signal system
• Allowable line speed
• Post on car frame
• "No Riders Allowed"
21a
Overhead hoists
• Safe working load
• Supporting structure load
• Hoist installation
• Air hoists
• Mfg’s specifications
22a
Conveyors
• Audible warning signal
• Emergency stop switches
• Guard screw conveyors
• Working blow conveyor
• Mark all crossovers
• Lockout/tagout
• ANSI B20.1-1957
23a