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eLibrary > BS EN 81-44:2024 Safety rules for the construction and installation of lifts. Special lifts for the transport of persons and goods - Lifting appliances in wind turbines >

BS EN 81-44:2024 Safety rules for the construction and installation of lifts. Special lifts for the transport of persons and goods - Lifting appliances in wind turbines, 2024

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BS EN 81-44:2024 Safety rules for the construction and installation of lifts. Special lifts for the transport of persons and goods - Lifting appliances in wind turbines, 2024

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1 Scope
2 Normative references
3 Terms, definitions, symbols and abbreviated terms [Go to Page]
3.1 Terms and definitions
3.2 Symbols and abbreviations
4 List of significant hazards
5 Safety requirements [Go to Page]
5.1 General
5.2 Loads and calculations [Go to Page]
5.2.1 Design loads [Go to Page]
5.2.1.1 General
5.2.1.2 Dead weights
5.2.1.3 Rated loads in the lifting appliance
5.2.1.4 Effect of friction forces
5.2.1.5 Loads exerted by persons
5.2.1.6 Wind loads for outside operating lifting appliances
5.2.1.7 Loads caused by snow or ice
5.2.1.8 Loads caused by temperature variation
5.2.1.9 Loads caused by buffers
5.2.1.10 Seismic loads
5.2.2 Load combinations
5.2.3 Calculation of static and fatigue strength [Go to Page]
5.2.3.1 Load-bearing structures
5.2.3.2 Mechanisms
5.2.4 Calculation for the suspension
5.2.5 Calculation for drive and secondary wire ropes [Go to Page]
5.2.5.1 General
5.2.5.2 Proof of fatigue strength of drive wire ropes
5.2.6 Calculation methods
5.3 Liftway protection, base enclosure and landing access [Go to Page]
5.3.1 General
5.3.2 Liftway protection [Go to Page]
5.3.2.1 General
5.3.2.2 Clearance around the carrier
5.3.2.3 Clearances beneath the carrier
5.3.2.4 Clearances above the carrier
5.3.3 Liftway protection at landings [Go to Page]
5.3.3.1 General requirements
5.3.3.2 Vertical sliding gate
5.3.3.3 Full height landing protection
5.3.3.4 Reduced height landing protection
5.4 Base frame
5.5 Guiding systems and buffers [Go to Page]
5.5.1 General
5.5.2 Rigid guiding for traction hoist drives
5.5.3 Mast guiding for rack and pinion drives
5.5.4 Rope guiding for traction hoist drives
5.5.5 End limits of the movements
5.6 Carrier [Go to Page]
5.6.1 General requirements
5.6.2 Carrier floor
5.6.3 Carrier walls
5.6.4 Carrier roof [Go to Page]
5.6.4.1 General
5.6.4.2 Carrier roof used as working platform
5.6.5 Carrier door
5.6.6 Trapdoor and ladder access door
5.6.7 Inspection opening
5.7 Drive units [Go to Page]
5.7.1 General
5.7.2 No-power descent
5.7.3 Protection and accessibility
5.7.4 Traction hoist drive [Go to Page]
5.7.4.1 General
5.7.4.2 Pulleys
5.7.4.3 Mechanical transmission
5.7.4.4 Wire rope guides
5.7.4.5 Service brakes
5.7.4.6 Prime mover
5.7.4.7 Traction force
5.7.4.8 Traction sheave grooving
5.7.4.9 Wire ropes
5.7.5 Rack and pinion drive [Go to Page]
5.7.5.1 General
5.7.5.2 Design
5.7.5.3 Rack and pinion system with two redundant drive units
5.8 Control and limiting devices [Go to Page]
5.8.1 General
5.8.2 Travel limit switches [Go to Page]
5.8.2.1 Lifting limit switch
5.8.2.2 Ultimate lifting limit switch
5.8.2.3 Lowering limit switch
5.8.2.4 Ultimate lowering limit switch
5.8.2.5 Mast detection switch
5.8.3 Slack rope device
5.8.4 Overload detection device
5.8.5 Obstruction detection device
5.8.6 Emergency stopping devices
5.8.7 Interlocking devices [Go to Page]
5.8.7.1 Landing gate
5.8.7.2 Trapdoor and ladder access door
5.8.7.3 Carrier door
5.8.7.4 Monitoring the means for the minimum clearances beneath the carrier
5.8.8 Drive unit fault detection device for rack and pinion system with two redundant drive units
5.8.9 Control modes [Go to Page]
5.8.9.1 Controls inside the carrier
5.8.9.2 Controls outside the carrier
5.8.9.3 Roof control
5.9 Electric installations and appliances [Go to Page]
5.9.1 General
5.9.2 Protection against electric faults
5.9.3 Protection against the effects of external influences
5.9.4 Electric wiring
5.9.5 Contactors, relay-contactors
5.9.6 Electric safety devices
5.9.7 Safety contacts
5.9.8 Lighting
5.10 Safety devices against falling of the lifting appliance [Go to Page]
5.10.1 Overspeed safety device against falling of the lifting appliance (traction hoist drive)
5.10.2 Fall arrest device against falling of the lifting appliance (traction hoist drive)
5.10.3 Safety device against falling of the carrier (rack and pinion drive)
6 Verification [Go to Page]
6.1 General
6.2 Verification tests on each lifting appliance before first use
7 Information for use [Go to Page]
7.1 General
7.2 User’s manual
7.3 Information for installation and dismantling
7.4 Information for maintenance
7.5 User Information available in the carrier
7.6 User Information available at the bottom landing
7.7 Marking [Go to Page]
7.7.1 General
7.7.2 Markings on the carrier
7.7.3 Markings at landings
7.7.4 Mast or guide section identification label for rack and pinion drive
7.7.5 Ladder guiding identification label
7.7.6 Overspeed safety device and fall arrest device label
7.7.7 Drive unit label
7.7.8 Marking for wire ropes for traction hoist drive
7.7.9 Control elements
Annex A (normative)Lifting appliance verification tests [Go to Page]
A.1 Test conditions and documentation [Go to Page]
A.1.1 General
A.1.2 Test samples
A.1.3 Test environment
A.1.4 Test instruments
A.1.5 Test records
A.2 Lifting appliance verification test in as installed configuration [Go to Page]
A.2.1 General
A.2.2 Lifting appliance speed
A.2.3 No-power descent speed
A.2.4 Lifting appliance static strength test
A.2.5 Lifting appliance dynamic strength test
A.2.6 Lifting appliance ultimate strength test
A.2.7 Lifting appliance overload detection device test
A.2.8 Carrier lighting
A.2.9 Lifting appliance current measurement
A.2.10 Lifting appliance electrical system
A.2.11 Lifting appliance drop tests for traction hoist drives [Go to Page]
A.2.11.1 Lifting appliance drop tests for fall arrest devices acting on the secondary wire rope
A.2.11.2 Lifting appliance drop tests for overspeed safety device acting on the drive wire rope
A.2.12 Overspeed safety device tests for rack and pinion drive lifting appliances [Go to Page]
A.2.12.1 General
A.2.12.2 Test method
A.2.13 Overspeed safety function test for rack and pinion lifting appliances with two redundant drive units [Go to Page]
A.2.13.1 General
A.2.13.2 Test method
A.2.13.3 Acceptance criteria
A.2.14 Top obstruction device test
A.2.15 Bottom obstruction device test
A.2.16 Carrier door(s), trapdoor(s) and inspection cover(s) interlocking switches
A.2.17 Limit switches [Go to Page]
A.2.17.1 Lifting limit switch
A.2.17.2 Lowering limit switch
A.2.18 Ultimate limit switches [Go to Page]
A.2.18.1 Ultimate lifting limit switch
A.2.18.2 Ultimate lowering limit switch for rack and pinion lifting appliances
A.2.19 Emergency stops
A.2.20 Anchor point test for personal fall protection equipment
A.3 Carrier verification test [Go to Page]
A.3.1 General
A.3.2 Carrier dead weight
A.3.3 Wall (including inspection covers) strength test
A.3.4 Floor strength test
A.3.5 Roof strength test
A.3.6 Door and trapdoor strength test
A.3.7 Door locking device test
Annex B (normative)Drive unit verification tests [Go to Page]
B.1 General
B.2 Traction hoist drive [Go to Page]
B.2.1 Static test
B.2.2 Dynamic test
B.2.3 Strength test
B.2.4 Endurance test
B.2.5 Traction hoist drive lifting load limit test
B.2.6 Wire rope test
B.2.7 Traction hoist drive speed
B.2.8 No-power descent speed
B.3 Rack and pinion drive (One drive system) [Go to Page]
B.3.1 Static test
B.3.2 Dynamic test
B.3.3 Strength test
B.3.4 Endurance test
B.3.5 Lifting load limit test
B.3.6 Current measurement
B.3.7 Speed measurement
B.3.8 No-power descent speed
B.4 Rack and pinion system with two redundant drive units [Go to Page]
B.4.1 Static test
B.4.2 Dynamic test
B.4.3 Testing of the drive unit fault system device
B.4.4 Strength test
B.4.5 Endurance test
B.4.6 Lifting load limit test
B.4.7 Current measurement
B.4.8 Speed measurement
B.4.9 No-power descent speed
Annex C (normative)Overspeed safety device and fall arrest device verification tests [Go to Page]
C.1 General
C.2 Overspeed safety devices and fall arrest devices for traction hoist drives [Go to Page]
C.2.1 Testing the operation of the fall arrest device acting on the secondary wire rope [Go to Page]
C.2.1.1 General
C.2.1.2 Force measurement apparatus
C.2.1.3 Test procedure
C.2.1.4 Test results
C.2.2 Testing the operation of the overspeed safety device acting on the drive wire rope [Go to Page]
C.2.2.1 General
C.2.2.2 Force measurement apparatus
C.2.2.3 Test procedure
C.2.2.4 Test results
C.2.3 Endurance test for overspeed safety devices acting on the secondary wire rope and acting on the drive wire rope [Go to Page]
C.2.3.1 Normal operation test
C.2.3.2 Extreme operation test
C.3 Overspeed safety device for rack and pinion drive [Go to Page]
C.3.1 General
C.3.2 Method of test [Go to Page]
C.3.2.1 Test for overspeed safety device for rack and pinion:
C.3.2.2 Direct or indirect measurements
C.3.2.3 Acceptance criteria
C.3.2.4 Test report
C.3.3 Endurance test
Annex D (normative)Other verification tests [Go to Page]
D.1 General
D.2 Landing gate and enclosure verification tests [Go to Page]
D.2.1 Full height landing gate
D.2.2 Reduced height landing gate
Annex E (informative)Evacuation and rescue [Go to Page]
E.1 Introduction [Go to Page]
E.1.1 Evacuation procedure
E.1.2 Rescue procedure
E.2 Evacuation scenario
Annex F (informative)List of significant hazards
Annex G (informative)Guidance on calculation methods
Annex ZA (informative)Relationship between this European Standard and the essential requirements of Directive 2006/42/EC aimed to be covered [Go to Page]

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