BS EN 81-44:2024

$215.11

Safety rules for the construction and installation of lifts. Special lifts for the transport of persons and goods – Lifting appliances in wind turbines

Published By	Publication Date	Number of Pages
BSI	2024	118

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Categories: 91.140.90 - Lifts. Escalators, BSI

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Description

1.1 This document specifies the safety requirements for the construction and installation of power operated lifting appliances installed permanently for indoor or outdoor service in wind turbines and intended for access to workplaces on wind turbines, including rescue and evacuation procedures. A lifting appliance serves defined landing levels and can move persons to working positions where they are carrying out work (which could be from the carrier) and has a carrier which is: a) designed for the transportation of persons and goods; b) guided; c) travelling vertically or along a path within 15° maximum from the vertical; d) supported or sustained by rack and pinion or rope traction drive; e) travelling with a speed not more than 0,7 m/s; f) able to operate in a temperature range between – 25 °C to + 55 °C. 1.2 This document does not cover hazards related to: a) noise; b) the use of the lifting appliance for erection or dismantling of the wind turbine; c) lightning protection; d) use in potentially explosive atmospheres; e) electromagnetic compatibility (emission, immunity); f) transporting of goods outside the carrier; g) the use of combustion engines; h) hydraulic and pneumatic drive units; i) the use of lifting appliances in floating wind turbines; j) use during earthquakes. 1.3 This document is not applicable to lifting appliances manufactured before the date of its publication.

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PDF Pages	PDF Title
2	undefined
11	1 Scope
12	2 Normative references
14	3 Terms, definitions, symbols and abbreviated terms 3.1 Terms and definitions
17	3.2 Symbols and abbreviations
18	4 List of significant hazards 5 Safety requirements 5.1 General 5.2 Loads and calculations 5.2.1 Design loads 5.2.1.1 General
19	5.2.1.2 Dead weights 5.2.1.3 Rated loads in the lifting appliance
20	5.2.1.4 Effect of friction forces 5.2.1.5 Loads exerted by persons
21	5.2.1.6 Wind loads for outside operating lifting appliances
23	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
25	5.2.3 Calculation of static and fatigue strength 5.2.3.1 Load-bearing structures
26	5.2.3.2 Mechanisms
28	5.2.4 Calculation for the suspension 5.2.5 Calculation for drive and secondary wire ropes 5.2.5.1 General 5.2.5.2 Proof of fatigue strength of drive wire ropes 5.2.6 Calculation methods
29	5.3 Liftway protection, base enclosure and landing access 5.3.1 General
30	5.3.2 Liftway protection 5.3.2.1 General 5.3.2.2 Clearance around the carrier
33	5.3.2.3 Clearances beneath the carrier 5.3.2.4 Clearances above the carrier 5.3.3 Liftway protection at landings 5.3.3.1 General requirements
34	5.3.3.2 Vertical sliding gate 5.3.3.3 Full height landing protection
36	5.3.3.4 Reduced height landing protection
41	5.4 Base frame 5.5 Guiding systems and buffers 5.5.1 General 5.5.2 Rigid guiding for traction hoist drives 5.5.3 Mast guiding for rack and pinion drives
42	5.5.4 Rope guiding for traction hoist drives 5.5.5 End limits of the movements
43	5.6 Carrier 5.6.1 General requirements 5.6.2 Carrier floor 5.6.3 Carrier walls
44	5.6.4 Carrier roof 5.6.4.1 General 5.6.4.2 Carrier roof used as working platform 5.6.5 Carrier door
45	5.6.6 Trapdoor and ladder access door 5.6.7 Inspection opening 5.7 Drive units 5.7.1 General
46	5.7.2 No-power descent 5.7.3 Protection and accessibility 5.7.4 Traction hoist drive 5.7.4.1 General
47	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
48	5.7.5 Rack and pinion drive 5.7.5.1 General 5.7.5.2 Design
51	5.7.5.3 Rack and pinion system with two redundant drive units 5.8 Control and limiting devices 5.8.1 General
54	5.8.2 Travel limit switches 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
55	5.8.5 Obstruction detection device
56	5.8.6 Emergency stopping devices 5.8.7 Interlocking devices 5.8.7.1 Landing gate
58	5.8.7.2 Trapdoor and ladder access door 5.8.7.3 Carrier door
59	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 5.8.9.1 Controls inside the carrier 5.8.9.2 Controls outside the carrier
60	5.8.9.3 Roof control 5.9 Electric installations and appliances 5.9.1 General 5.9.2 Protection against electric faults
61	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
62	5.9.7 Safety contacts 5.9.8 Lighting 5.10 Safety devices against falling of the lifting appliance 5.10.1 Overspeed safety device against falling of the lifting appliance (traction hoist drive)
63	5.10.2 Fall arrest device against falling of the lifting appliance (traction hoist drive)
64	5.10.3 Safety device against falling of the carrier (rack and pinion drive)
65	6 Verification 6.1 General
74	6.2 Verification tests on each lifting appliance before first use
75	7 Information for use 7.1 General 7.2 User’s manual
76	7.3 Information for installation and dismantling 7.4 Information for maintenance
77	7.5 User Information available in the carrier 7.6 User Information available at the bottom landing 7.7 Marking 7.7.1 General 7.7.2 Markings on the carrier
78	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
79	7.7.8 Marking for wire ropes for traction hoist drive 7.7.9 Control elements
80	Annex A (normative)Lifting appliance verification tests A.1 Test conditions and documentation A.1.1 General A.1.2 Test samples A.1.3 Test environment
81	A.1.4 Test instruments A.1.5 Test records A.2 Lifting appliance verification test in as installed configuration A.2.1 General
82	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
83	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
84	A.2.11 Lifting appliance drop tests for traction hoist drives A.2.11.1 Lifting appliance drop tests for fall arrest devices acting on the secondary wire rope
85	A.2.11.2 Lifting appliance drop tests for overspeed safety device acting on the drive wire rope
87	A.2.12 Overspeed safety device tests for rack and pinion drive lifting appliances A.2.12.1 General A.2.12.2 Test method
89	A.2.13 Overspeed safety function test for rack and pinion lifting appliances with two redundant drive units A.2.13.1 General A.2.13.2 Test method A.2.13.3 Acceptance criteria A.2.14 Top obstruction device test
90	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 A.2.17.1 Lifting limit switch A.2.17.2 Lowering limit switch
91	A.2.18 Ultimate limit switches 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 A.3.1 General A.3.2 Carrier dead weight A.3.3 Wall (including inspection covers) strength test
92	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
93	Annex B (normative)Drive unit verification tests B.1 General B.2 Traction hoist drive B.2.1 Static test B.2.2 Dynamic test
94	B.2.3 Strength test B.2.4 Endurance test B.2.5 Traction hoist drive lifting load limit test
95	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) B.3.1 Static test
96	B.3.2 Dynamic test B.3.3 Strength test B.3.4 Endurance test
97	B.3.5 Lifting load limit test B.3.6 Current measurement B.3.7 Speed measurement B.3.8 No-power descent speed
98	B.4 Rack and pinion system with two redundant drive units 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
99	B.4.6 Lifting load limit test B.4.7 Current measurement
100	B.4.8 Speed measurement B.4.9 No-power descent speed
101	Annex C (normative)Overspeed safety device and fall arrest device verification tests C.1 General C.2 Overspeed safety devices and fall arrest devices for traction hoist drives C.2.1 Testing the operation of the fall arrest device acting on the secondary wire rope C.2.1.1 General
102	C.2.1.2 Force measurement apparatus C.2.1.3 Test procedure
103	C.2.1.4 Test results C.2.2 Testing the operation of the overspeed safety device acting on the drive wire rope C.2.2.1 General
104	C.2.2.2 Force measurement apparatus C.2.2.3 Test procedure
105	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 C.2.3.1 Normal operation test
106	C.2.3.2 Extreme operation test C.3 Overspeed safety device for rack and pinion drive C.3.1 General
107	C.3.2 Method of test 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
108	Annex D (normative)Other verification tests D.1 General D.2 Landing gate and enclosure verification tests D.2.1 Full height landing gate D.2.2 Reduced height landing gate
109	Annex E (informative)Evacuation and rescue E.1 Introduction E.1.1 Evacuation procedure E.1.2 Rescue procedure E.2 Evacuation scenario
110	Annex F (informative)List of significant hazards
112	Annex G (informative)Guidance on calculation methods
113	Annex ZA (informative)Relationship between this European Standard and the essential requirements of Directive 2006/42/EC aimed to be covered

Additional information

Status	Definitive
Pages	118
Publication Date	2024-07-31
ISBN	978 0 539 06634 0
Standard Number	BS EN 81-44:2024
Title	Safety rules for the construction and installation of lifts. Special lifts for the transport of persons and goods – Lifting appliances in wind turbines
Identical National Standard Of	EN 81-44
Descriptors	Installation, Passenger lifts, Service lifts, Lifting equipment, Lifts, Electrically-operated devices, Safety measures, Accident prevention, Goods lifts, Hydraulically-operated devices
Publisher	BSI
Committee	MHE/4
ICS Codes	91.140.90 - Lifts. Escalators

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