Standard
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AS/NZS 4024.3612:2015
[Current]Safety of machinery, Part 3612: Conveyors — Chain conveyors and unit handling conveyors
Sets out recommended minimum lifecycle safety requirements for chain conveyors and unit handling conveyors. It also contains requirements for systems comprising multiple conveyors. This Standard is to be read in conjunction with, and is complimentary to AS/NZS 4024.3610.
Published: 21/08/2015
Pages: 57
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
1 Scope and general
1.1 Scope
1.2 Application
1.3 Referenced documents
1.4 Definitions
2 Typical hazards, risk assessment and design
2.1 Application
2.2 Typical hazards associated with chain and unit handling conveyors
2.3 Risk assessment
2.3.1 General
2.3.2 Environmental lifecycle considerations
2.4 Design
2.4.1 General
2.4.2 Hinged sections
2.4.2.1 General
2.4.2.2 Manually operated
2.4.2.3 Power operated
2.4.3 Nose overs
2.4.4 Anti-runaway
3 Chain conveyors
3.1 Application
3.2 Design risk assessment
3.2.1 Characteristics of chain conveyors
3.2.2 Specific lifecycle hazards associated with chain conveyors
3.2.3 Chain conveyor design information
3.3 Design of specific types of chain conveyors
3.3.1 General
3.3.2 Overhead chain or cable conveyors
3.3.2.1 Guarding
3.3.2.2 Guarding yokes
3.3.2.3 Drop sections
3.3.2.4 Anti-runaway and anti-drop devices
3.3.3 Slat conveyors—Spacing between slats and aprons
3.3.4 Roller flight conveyors
3.3.5 Drag chain conveyors
3.3.5.1 General
3.3.5.2 Inspection panels
3.3.5.3 Guarding of flights
3.3.5.4 Anti-runback
3.3.6 Swing tray conveyors
3.3.7 Bucket elevators
3.3.7.1 General
3.3.7.2 Design for maintenance
3.4 Maintenance
3.4.1 General
3.4.2 Anti-runaway
4 Unit handling conveyors
4.1 Application
4.2 Design risk assessment
4.2.1 General
4.2.2 Characteristics of unit handling conveyors
4.2.3 Specific lifecycle hazards associated with unit handling conveyors
4.3 Design information
4.3.1 Rating plate
4.3.2 Plant safety file
4.4 Design of unit handling conveyors
4.4.1 Design standards
4.4.2 Safety requirements and/or measures
4.5 Measures for protection against mechanical hazards
4.5.1 Measures for protection against crushing and shearing hazards
4.5.1.1 General
4.5.1.2 Enclosed units
4.5.1.3 Lateral safety distances for conveyors
4.5.1.4 Lateral safety distances for all overhead conveyors
4.5.1.5 Specific lateral safety distances for self-propelled overhead conveyors
4.5.1.6 Safety distances under self-propelled overhead conveyors
4.5.1.7 Safety distances between mobile units of self-propelled overhead conveyors
4.5.1.8 Prevention of access beneath vertical transfer devices
4.5.1.9 Safety clearances for maintenance in vertical transfer devices
4.5.2 Measures for protection against drawing-in hazards
4.5.2.1 Drawing-in points at driven and carrying elements or pushing elements
4.5.2.2 Driven elements
4.5.2.3 Danger zones between drag chain conveyors and conveyed unit loads
4.5.2.4 Wheels or rollers of tow carts
4.5.2.5 Rollers of overhead conveyors
4.5.2.6 Contact points on belt driven roller conveyors
4.5.2.7 Drawing in points at supporting rollers
4.5.2.8 Drawing-in points on driven roller conveyors
4.5.3 Measures for protection against striking/collision hazards
4.5.3.1 Cross over passageways
4.5.3.2 Prevention of access to danger zones
4.5.3.3 Crossings of fixed track conveyors and other means of transportation
4.5.3.4 Path of mobile conveyors or tow carts
4.5.3.5 Crossings of self-propelled overhead conveyors and entrances
4.5.3.6 Transport area of transfer cars
4.5.4 Measures for protection against hazards due to falling objects
4.5.4.1 Measures for protection against falling of the conveyor or parts of it
4.5.4.2 Measures for protection against falling of unit loads
4.5.5 Measures for protection against slipping, tripping and falling hazards
4.5.5.1 Underfloor chains
4.5.5.2 Crossings on roller conveyors
4.6 Measures for protection against hazards caused by failure of power supply, breaking down of conveyor parts or other functional disorders
4.6.1 General
4.6.2 Infeed of conveyed loads
4.6.3 Pre-start warnings
4.7 Devices and equipment for setting up and repair—Control devices
4.8 Information for use
4.8.1 Instruction handbook
4.8.1.1 General
4.8.1.2 Instructions for the use of the conveyor
4.8.1.3 Marking of drag chain conveyors
4.8.1.4 Instruction handbook for vertical transfer devices
4.8.1.5 Hazards generated by conveyed loads
4.8.2 Warning labels and signs
Appendix A
A1 References from the text
A2 Related documents
Appendix B
B1 Apron conveyors
B1.1 Apron conveyor
B1.2 Apron conveyor with pans
B2 Barrel or drum conveyor
B3 Bucket conveyors
B3.1 Bucket elevator
B3.2 Bucket conveyor
B3.3 Pivoted bucket conveyor
B3.4 Vertical internal discharge chain and bucket conveyor
B4 Chain conveyors
B4.1 Chain conveyor
B4.2 Chain conveyor with driving dogs
B4.3 Drag chain conveyor
B4.4 Overhead chain conveyor (open track type)
B4.5 Overhead chain conveyor (enclosed track)
B4.6 Single chain or crate conveyor
B4.7 Swing chain conveyor, fork tray type
B4.8 Swing tray conveyor, solid tray type
B4.9 Roller flight conveyor (accumulating)
B4.10 Vertical chain conveyor, opposed shelf type
B4.11 Pallet type conveyor
B4.12 Flight conveyor (push-type)
B4.13 Armoured face conveyor
B5 Cross-bar conveyor
B6 Pocket conveyor
B7 Truck-towing conveyors
B7.1 Floor truck-towing conveyor
B7.2 Single strand floor-mounted truck conveyor
B8 Plate conveyor
B9 Powered roller conveyor
B10 Slat conveyors
B10.1 Slat conveyor
B10.2 Slat conveyor with pushers
B10.3 Slat band conveyor
B11 Trolley conveyor
B12 Unit handling belt conveyor
B13 Conveyor components
B13.1 Anti-runback device for overhead chain conveyor
B13.2 Anti-runaway protective device for overhead chain conveyor
B13.3 Hinged section
Appendix C
C1 Roller conveyors—Non-powered
C2 Unit handling belt conveyors
C2.1 General
C2.2 Horizontal belt conveyors—Typical side elevations
C2.3 Inclined belt conveyors—Typical side elevations
C3 Belt driven live roller conveyors
C4 Chain driven live roller conveyors
C5 Slat conveyors
C6 Overhead trolley chain conveyors
Appendix D
D1 General
D2 Defined terms
D2.1 Bed (conveyor)
D2.2 Bed (slider)
D2.3 Gravity rollers
D2.4 Multi-strand drag chain conveyor
D2.5 Metering conveyor
D2.6 Motorized pulley
D2.7 Plow
D2.8 Powered feeder
D2.9 Single strand drag chain conveyor
D2.10 Tracking
Cited references in this standard
ANSI/CEMA 404
Chain driven live roller conveyors
ANSI/CEMA 405
Slat conveyors
[Current]
Safety of machinery, Part 1601: Design of controls, interlocks and guarding — Guards — General requirements for the design and construction of fixed and movable guards
[Current]
Safety of machinery, Part 1602: Interlocking devices associated with guards — Principles for design and selection
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