AS/NZS 1418.10:2011

AS/NZS 1418.10:2011 CRANES, HOISTS AND WINCHES - MOBILE ELEVATING WORK PLAFORMS

PREFACE

CONTENTS

SECTION 1 SCOPE AND GENERAL

1.1 SCOPE

1.2 REFERENCED DOCUMENTS

1.3 DEFINITIONS

1.3.1 Access position

1.3.2 Boom insulation/Insert

1.3.3 Basket

1.3.4 Brittle (non-ductile) material

1.3.5 Chain-drive system

1.3.6 Chassis

1.3.7 Chassis insulation

1.3.8 Critical component

1.3.9 Competent person

1.3.10 Disruptive discharge

1.3.11 Ductile material

1.3.12 Electrical apparatus

1.3.13 Elevated travel position

1.3.14 Extending structure

1.3.15 Fall-arrest system

1.3.16 Fall-restraint system

1.3.17 Finite element analysis model (FEA model)

1.3.18 Height

1.3.19 Instability

1.3.20 Insulated line maintenance MEWP

1.3.21 Load cycle

1.3.22 Load-sensing system

1.3.23 Lowered travel position

1.3.24 MEWP classifications

1.3.25 MEWP types

1.3.26 Mobile elevating work platform (MEWP)

1.3.27 Moment-sensing system

1.3.28 Operating modes

1.3.29 Orchard

1.3.30 Orchard MEWP

1.3.31 Oscillating axle

1.3.32 Pedestrian-controlled MEWP

1.3.33 Rail-mounted MEWP

1.3.44 Transport position

1.3.45 Transporting

1.3.46 Travelling

1.3.47 Type test

1.3.48 Vehicle-mounted MEWP

1.3.49 Wire rope drive system

1.3.50 Working envelope

1.3.51 Work platform

1.3.52 Working coefficient

1.4 NEW DESIGNS, INNOVATIONS AND DESIGN METHODS

SECTION 2 DESIGN REQUIREMENTS

2.1 STRUCTURAL AND STABILITY CALCULATIONS

2.1.1 Calculations

2.1.2 Rated capacity

2.1.3 Forces acting on the MEWP structure

2.1.4 Determination of forces acting on the MEWPs structure

2.1.5 Stability calculations

2.1.6 Structural calculations

2.2 CHASSIS AND STABILIZERS/OUTRIGGERS

2.2.1 Automatic safety device

2.2.2 Chassis inclination

2.2.3 Locking pins

2.2.4 Control bars

2.2.5 Control bars held in vertical position

2.2.6 Stabilizer/outrigger feet

2.2.7 Permitted work platform positions

2.2.8 Totally manually operated MEWP

2.2.9 Oscillating axle lock or control systems

2.2.10 Prevention of powered stabilizer/outrigger or chassis levelling system movement

2.2.11 Manually operated stabilizers/outriggers

2.2.12 Self-propelled MEWP brakes

2.2.13 Movement of stabilizers/outriggers

2.2.14 Unauthorized use

2.2.15 Maximum travel speeds in elevated travel position

2.2.16 Stopping distances

2.2.17 Maximum travel speed of pedestrian-controlled MEWPs

2.2.18 Guards to protect persons at control positions

2.2.19 Engine exhaust

2.2.20 Filling points for fluids

2.2.21 Battery constraint

2.2.22 Derailment prevention

2.2.23 Vehicle-mounted MEWP chassis selection

2.3 EXTENDING STRUCTURE

2.3.1 Methods to avoid overturning and exceeding permissible stresses

2.3.2 Sequencing of the extending structure

2.3.3 Tilting chassis or superstructure

2.3.4 Trapping and shearing

2.3.5 Supporting the extending structure for routine maintenance

2.3.6 Speeds of the extending structure

2.3.7 Support in the transport position

2.4 EXTENDING STRUCTURE DRIVE SYSTEMS

2.4.1 General

2.4.2 Wire rope drive systems

2.4.3 Chain drive systems

2.4.4 Lead-screw drive systems

2.4.5 Rack and pinion drive systems

2.5 WORK PLATFORM

2.5.1 Level of work platform

2.5.2 Platform level adjustment

2.5.3 Work platform materials

2.5.4 Guardrail (protection) systems

2.5.5 Anchorage(s)

2.5.6 Openings in guardrails for entrance and exit

2.5.7 Floor of work platform

2.5.8 Access ladder

2.5.9 Handholds and handrails

2.5.10 Trapdoors

2.5.11 Audible warning device

2.5.12 Means of communication

2.5.13 Mechanical stops

2.5.14 Support in transport position

2.6 CONTROLS

2.6.1 General

2.6.2 Activation and operation

2.6.3 Direction of movement

2.6.4 Work platform controls: Location, accessibility, protection

2.6.5 Duplicate controls: Location, accessibility, protection and selection

2.6.6 Emergency stops

2.6.7 Electrical switches

2.6.8 Pilot and solenoid valves

2.6.9 Restoration of power after failure of power supply

2.6.10 Overriding emergency system

2.6.11 Speed restriction

2.6.12 Automatic or programmed operation

2.6.13 Winch control on vehicle-mounted MEWPs

2.6.14 Control systems using encoded data techniques

2.7 ELECTRICAL EQUIPMENT

2.7.1 General

2.7.2 Main switch

2.7.3 Cables

2.7.4 Battery protection

2.7.5 Ingress of water

2.8 HYDRAULIC SYSTEMS

2.8.1 Pressure-limiting device

2.8.2 Strength of pipes and connections

2.8.3 Bursting strength of hoses and fittings

2.8.4 Pressure rating of other components

2.8.5 Gauge connections

2.8.6 Venting of air

2.8.7 Inlet filter

2.8.8 Fluid level indicators

2.8.9 Fluid cleanliness

2.8.10 Gas-loaded accumulators

2.8.11 Incorrect connection of hoses

2.9 HYDRAULIC CYLINDERS

2.9.1 Structural design

2.9.2 Prevention of unintended movement of load-holding cylinders

2.10 SAFETY DEVICES

SECTION 3 VERIFICATION OF THE SAFETY REQUIREMENTS OR MEASURES OR BOTH

3.1 GENERAL

3.2 TYPE TESTS OF MEWPS

3.3 PRODUCTION TESTS

3.4 DESIGN CHECK

3.5 MANUFACTURING CHECK

3.6 TESTS

3.6.1 General

3.6.2 Fall-arrest overturning test

3.6.3 Stability tests

3.6.4 Overload test

3.6.5 MEWP functional tests

SECTION 4 INFORMATION FOR USE

4.1 MANUALS

4.1.1 General

4.1.2 Maintenance manual

4.1.3 Operators manual

4.2 MARKING

4.2.1 Manufacturer’s plate

4.2.2 Work platform

4.2.3 Multiple rated capacities

4.2.4 Emergency systems

4.2.5 Work platform rated capacities

4.2.6 Orchard use

4.2.7 External power supply connections

4.2.8 Detachable parts

4.2.9 Projecting extremities

4.2.10 Wheel/stabilizer/outrigger load

4.2.11 Tyre pressure

4.2.12 Clearances

4.2.13 Maintenance

4.2.14 Stabilizer/outrigger use

4.2.15 Levelling instructions

4.2.16 Pressurized vessel

SECTION 5 ORCHARD NEWPS

5.1 GENERAL

5.2 SAFETY REQUIREMENTS AND MEASURES FOR ORCHARD MEWPs

5.2.1 Rated capacity (see Clause 2.1.2)

5.2.2 Fatigue stress analysis (see Clause 2.1.6.3.3)

5.2.3 Chassis inclination (see Clause 2.2.2)

5.2.4 Brakes (see Clause 2.2.12)

5.2.5 Travel speed

5.2.6 Stopping distances (see Clause 2.2.16)

5.2.7 Load- and moment-sensing systems

5.2.8 Operator platform level control

5.2.9 Guardrail (protection) system

5.2.10 Controls (see Clause 2.6)

5.2.11 Boom lift systems

5.2.12 Marking

SECTION 6 PORTABLE MEWPS

6.1 GENERAL

6.2 SPECIFIC REQUIREMENTS

6.2.1 Assembly

6.2.2 Openings in guardrails for entrance and exit

6.2.3 Controls

6.2.4 Manual descent and emergency retrieval

6.2.5 Design for stability

6.2.6 Brakes

6.2.7 Motion limits

SECTION 7 INSULATED MEWP

7.1 GENERAL

7.1.1 Risk considerations

7.1.2 Use

7.1.3 Insulation rating

7.1.4 Materials and construction

7.2 DESIGN

7.2.1 Minimizing risks to operators

7.2.2 Minimizing risks to personnel located at ground level

7.2.3 Minimization of the risk of inadvertent contact between objects at different potential

7.3 INSULATED OPERATOR’S BASKETS

7.3.1 Materials

7.3.2 Construction

7.3.3 Insulation criteria

7.3.4 Insulating basket liners for HV live working

7.4 LOW-VOLTAGE INSULATED PLATFORMS

7.5 INSULATION INSERTS

7.5.1 Length

7.5.2 Construction

7.6 INSULATED COVERING

7.6.1 General

7.6.2 Extent of cover insulation

7.6.3 Application

7.7 ELECTRICAL TEST POINTS

7.7.1 General

7.7.2 Upper test point

7.7.3 Intermediate test point

7.7.4 Lower test point

7.7.5 Boom insulator surface leakage monitoring electrode(s)

7.7.6 Gradient control devices

7.8 ADDITIONAL REQUIREMENTS

7.8.1 Load sensing

7.8.2 Criteria for enhanced stability for limited work platform dimensions

7.8.3 Criteria for enhanced overload for limited work platform dimensions

7.8.4 Earthing terminal

7.8.5 Reduction of fire risk

7.8.6 Emergency shut-off

7.8.7 Emergency retrieval

7.8.8 Vacuum exclusion systems

7.8.9 Vertical boom deflection

7.8.10 Lateral boom deflection

7.9 ACCEPTANCE TESTING OF ELECTRICAL INSULATION

7.9.1 General

7.9.2 Test schedule

7.9.3 Dry insulated insert withstand test

7.9.4 Total leakage current test

7.9.5 Boom insert surface leakage test for MEWPs fitted with test electrodes in accordance with Clause 7.7.5

7.9.6 Low-voltage insulating covering test (all MEWPs)

7.9.7 Basket vertical withstand test

7.9.8 Basket puncture test

7.9.9 HV live work liner puncture test

7.9.10 Hydrophobicity test for wet-rated MEWPs (reference only)

7.9.11 Wet insert withstand and leakage current test

7.9.12 Basket wet vertical withstand test

7.9.13 Insulating inserts rain test for rain-rated MEWPs

7.9.14 Basket rain vertical withstand test (for rain-rated MEWPs only)

7.9.15 Certification notices

7.9.16 Insulation marking system

7.9.17 Labels

7.9.18 Electrical test reports

APPENDIX A - TYPICAL HAZARDS ASSOCIATED WITH MEWPs

APPENDIX BEXPLANATORY NOTES ON THE CHANGES FORELECTRICALLY INSULATED MEWPs

B1 GENERAL

B2 INSULATION RATING

B3 CHASSIS INSULATION

B4 TOTAL LEAKAGE CURRENT TEST

B5 WET-RATED MEWPs

B6 RAIN-RATED MEWPs

B7 INSULATED BASKETS

B8 DEFINED TEST PROCEDURES

B9 IDENTIFIED HAZARDS

B10 APPLICATION TO MEWPs DESIGNED TO PREVIOUS EDITIONS OF THIS STANDARD

APPENDIX C - DYNAMIC FACTORS IN STABILITY AND STRUCTURAL CALCULATIONS

C1 STABILITY CALCULATIONS

C2 STRUCTURAL CALCULATIONS

APPENDIX D - STABILITY CALCULATIONS

APPENDIX E - USE OF MEWPs IN WIND SPEEDS GREATER THAN 12.5 m/s (BEAUFORT SCALE 6)

APPENDIX F - TIPPING LINES OF MEWPs

F1 GENERAL

F2 MEWPs ON WHEELS (TYRES)

F3 MEWPs ON OUTRIGGERS (see Figure F3)

F4 MEWPs ON OUTRIGGERS AND WHEELS (see Figures F4(A) and F4(B))

APPENDIX G - INSTRUCTION MANUAL

G1 GENERAL

G2 OPERATING INSTRUCTIONS

APPENDIX H - ADDITIONAL REQUIREMENTS FOR CONTROL SYSTEM USING ENCODED DATA TRANSMISSION TECHNIQUES

H1 GENERAL

H2 SYSTEM DESIGN REQUIREMENTS

H3 RISK ASSESSMENT

H4 CONSTRUCTION

H5 COVERS, GUARDS AND ENCLOSURES

H6 INSTRUCTIONS

H7 Text deleted

APPENDIX I - COMMENTARY ON DESIGN SAFETY REQUIREMENTS FOR ORCHARD MEWPs

I1 INTRODUCTION

I2 ESSENTIAL CHARACTERS OF ORCHARD MEWPs

APPENDIX J - ELECTRICAL TEST REPORTS

APPENDIX K - MEWP INSERT SELECTION

APPENDIX L - LIST OF ELECTRICAL HAZARDS

APPENDIX M - OPERATIONAL PROCEDURES AND PERIODIC TESTING FOR ELECTRICALLY INSULATED MOBILE ELEVATING WORK PLATFORMS

M1 GENERAL

M2 SELECTION OF INSULATED MEWPs FOR WORK ON OR NEAR EXPOSED ENERGIZED OVERHEAD POWERLINES

M3 SITING

M4 PERIODIC TESTING OF INSULATED MEWPs

M5 UNSCHEDULED CHECKS

M6 ALTERATIONS, MODIFICATION AND SIGNIFICANT REPAIRS OF INSULATION SYSTEMS

M7 MAINTENANCE OF INSULATION COMPONENTS

M8 ACTIONS FOLLOWING BREACH OR FAILURE OF THE INSULATION UNDER OPERATING CONDITIONS

APPENDIX N - EXAMPLE OF THE APPLICATION OF CONTROL SYSTEM CATEGORIES