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BS EN 81-20:2020:2021 Edition

BS EN 81-20:2020:2021 Edition

$256.21

Safety rules for the construction and installation of lifts. Lifts for the transport of persons and goods – Passenger and goods passenger lifts

Published By Publication Date Number of Pages
BSI 2021 184
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1.1 This document specifies the safety rules for permanently installed new passenger or goods passenger lifts, with traction, positive or hydraulic drive, serving defined landing levels, having a car designed for the transportation of persons or persons and goods, suspended by ropes, chains or jacks and moving between guide rails inclined not more than 15° to the vertical.

PDF Catalog

PDF Pages PDF Title
2 undefined
12 0 Introduction
13 0.3 Principles
0.4 Assumptions
17 1 Scope
18 2 Normative references
20 3 Terms and definitions
27 4 List of significant hazards
29 5 Safety requirements and/or protective measures
5.1 General
5.2 Well, machinery spaces and pulley rooms
5.2.1 General provisions
5.2.1.1 Arrangement of lift equipment
30 5.2.1.2 Exclusive use of the well, machine and pulley rooms
5.2.1.3 Ventilation of the well, machinery spaces and pulley rooms
5.2.1.4 Lighting
31 5.2.1.5 Electric equipment in the pit and in machinery spaces and pulley rooms
32 5.2.1.6 Emergency release
5.2.1.7 Handling of equipment
5.2.1.8 Strength of walls, floors and ceilings
34 5.2.1.9 Surfaces of walls, floors and ceilings
5.2.2 Access to well and to machinery spaces and pulley rooms
35 5.2.3 Access and emergency doors – Access trap doors – Inspection doors
36 5.2.4 Notices
37 5.2.5 Well
5.2.5.1 General provisions
5.2.5.2 Well enclosure
40 5.2.5.3 Construction of the walls of the well and landing doors facing a car entrance
42 5.2.5.4 Protection of any spaces located below the well
5.2.5.5 Protection in the well
43 5.2.5.6 Guided travel of car, counterweight and balancing weight
44 5.2.5.7 Refuge spaces on car roof and clearances in headroom
48 5.2.5.8 Refuge spaces and clearances in the pit
50 5.2.6 Machinery spaces and pulley rooms
5.2.6.1 General provisions
5.2.6.2 Notices and instructions
51 5.2.6.3 Machinery in a machine room
52 5.2.6.4 Machinery inside the well
56 5.2.6.5 Machinery outside of the well
5.2.6.6 Devices for emergency and test operations
57 5.2.6.7 Construction and equipment of pulley rooms
58 5.3 Landing doors and car doors
5.3.1 General provisions
5.3.2 Height and width of entrances
5.3.2.1 Height
5.3.2.2 Width
5.3.3 Sills, guides, door suspension
5.3.3.1 Sills
5.3.3.2 Guides
5.3.3.3 Suspension of vertically sliding doors
59 5.3.4 Horizontal door clearances
60 5.3.5 Strength of landings and car doors
5.3.5.1 General
5.3.5.2 Behaviour under fire conditions
5.3.5.3 Mechanical strength
64 5.3.6 Protection in relation to door operation
5.3.6.1 General
5.3.6.2 Power operated doors
66 5.3.6.3 Reversal of closing movement
5.3.7 Local landing lighting and “car here” signal lights
5.3.7.1 Local landing lighting
5.3.7.2 “Car here” indication
67 5.3.8 Locking and closed landing door check
5.3.8.1 Protection against the risk of falling
5.3.8.2 Protection against shearing
5.3.9 Locking and emergency unlocking of landing and car doors
5.3.9.1 Landing door locking devices
69 5.3.9.2 Car door locking devices
5.3.9.3 Emergency unlocking
70 5.3.9.4 Electric safety device for proving the landing door closed
5.3.10 Requirements common to devices for proving the locked condition and the closed condition of the landing door
5.3.11 Sliding landing doors with multiple, mechanically linked panels
71 5.3.12 Closing of automatically operated landing doors
5.3.13 Electric safety device for proving the car doors closed
5.3.14 Sliding or folding car doors with multiple, mechanically linked panels
72 5.3.15 Opening the car door
5.4 Car, counterweight and balancing weight
5.4.1 Height of car
5.4.2 Available car area, rated load, number of passengers
5.4.2.1 General case
74 5.4.2.2 Goods passenger lifts
77 5.4.2.3 Number of passengers
78 5.4.3 Walls, floor and roof of the car
79 5.4.4 Car door, floor, wall, ceiling and decorative materials
80 5.4.5 Apron
5.4.6 Emergency trap doors and emergency doors
81 5.4.7 Car roof
85 5.4.8 Equipment on top of the car
5.4.9 Ventilation
5.4.10 Lighting
86 5.4.11 Counterweight and balancing weight
5.5 Suspension means, compensation means and related protection means
5.5.1 Suspension means
5.5.2 Sheave, pulley, drum and rope diameter ratios, rope/chain terminations
87 5.5.3 Rope traction
5.5.4 Winding up of ropes for positive drive lifts
88 5.5.5 Distribution of load between the ropes or the chains
5.5.6 Compensation means
89 5.5.7 Protection for sheaves, pulleys and sprockets
91 5.5.8 Traction sheaves, pulleys and sprockets in the well
5.6 Precautions against free fall, excessive speed, unintended car movement and creeping of the car
5.6.1 General provisions
94 5.6.2 Safety gear and its tripping means
5.6.2.1 Safety gear
95 5.6.2.2 Means of tripping the safety gear
100 5.6.3 Rupture valve
101 5.6.4 Restrictors
102 5.6.5 Pawl device
103 5.6.6 Ascending car overspeed protection means
104 5.6.7 Protection against unintended car movement
107 5.7 Guide rails
5.7.1 Guiding of the car, counterweight or balancing weight
5.7.2 Permissible stresses and deflections
5.7.2.1 General provisions
108 5.7.2.2 Load cases
5.7.2.3 Forces on guide rails
111 5.7.3 Combination of loads and forces
5.7.4 Impact factors
5.7.4.1 Safety device operation
5.7.4.2 Normal operation
5.7.4.3 Auxiliary parts fixed to the guide rail and/ or other operational scenarios
5.7.4.4 Values of impact factors
112 5.7.4.5 Permissible stresses
5.7.4.6 Permissible deflections
113 5.7.4.7 Calculation
5.8 Buffers
5.8.1 Car and counterweight buffers
114 5.8.2 Stroke of car and counterweight buffers
5.8.2.1 Energy accumulation type buffers
5.8.2.2 Energy dissipation type buffers
115 5.9 Lift machinery and associated equipment
5.9.1 General provision
5.9.2 Lift machine for traction lifts and positive drive lifts
5.9.2.1 General provisions
116 5.9.2.2 Braking system
118 5.9.2.3 Emergency operation
5.9.2.4 Speed
119 5.9.2.5 Removing the power which can cause rotation of the motor
120 5.9.2.6 Control devices and monitoring devices
121 5.9.2.7 Motor run time limiter
5.9.3 Lift machine for hydraulic lifts
5.9.3.1 General provision
122 5.9.3.2 Jack
125 5.9.3.3 Piping
126 5.9.3.4 Stopping the machine and checking its stopped condition
127 5.9.3.5 Hydraulic control and safety devices
128 5.9.3.6 Checking the pressure
5.9.3.7 Tank
5.9.3.8 Speed
5.9.3.9 Emergency operation
130 5.9.3.10 Motor run time limiter
5.9.3.11 Protection against overheating of the hydraulic fluid
5.10 Electric installations and appliances
5.10.1 General provisions
5.10.1.1 Limits of application
131 5.10.1.2 Protection against electric shock
132 5.10.1.3 Insulation resistance of the electrical installation (HD 603646:2007)
5.10.2 Incoming supply conductor terminations
5.10.3 Contactors, contactor relays, components of safety circuits
5.10.3.1 Contactors and contactor relays
133 5.10.3.2 Components of safety circuits
5.10.4 Protection of electrical equipment
134 5.10.5 Main switches
135 5.10.6 Electric wiring
5.10.6.1 Conductors and cables
5.10.6.2 Cross-sectional area of conductors
5.10.6.3 Wiring practices
136 5.10.6.4 Connectors
5.10.7 Lighting and socket outlets
5.10.8 Control of the supply for lighting and socket outlets
137 5.10.9 Protective earthing
5.10.10 Electrical identification
5.11 Protection against electric faults; failure analysis; electric safety devices
5.11.1 Protection against electric faults; failure analysis
138 5.11.2 Electric safety devices
5.11.2.1 General provisions
139 5.11.2.2 Safety contacts
5.11.2.3 Safety circuits
142 5.11.2.4 Operation of electric safety devices
5.11.2.5 Actuation of electric safety devices
5.11.2.6 Programmable electronic systems in safety related applications (PESSRAL)
143 5.12 Controls – Final limit switches – Priorities
5.12.1 Control of lift operations
5.12.1.1 Control of normal operation
5.12.1.2 Load control
5.12.1.3 Monitoring the normal slowdown of the machine in case of reduced buffer stroke
144 5.12.1.4 Control of levelling, re-levelling and preliminary operation with doors not closed and locked
5.12.1.5 Control of inspection operation
147 5.12.1.6 Control of emergency electrical operation
148 5.12.1.7 Protection for maintenance operations
5.12.1.8 Landing and car door bypass device
149 5.12.1.9 Prevention of normal operation of the lift with faulty door contact circuits
5.12.1.10 Electrical anti-creep system (see Table 12)
150 5.12.1.11 Stopping devices
5.12.2 Final limit switches
5.12.2.1 General
5.12.2.2 Actuation of the final limit switches
151 5.12.2.3 Method of operation of final limit switches
5.12.3 Emergency alarm device and intercom system
152 5.12.4 Priorities and signals
6 Verification of the safety requirements and/or protective measures
6.1 Technical compliance documentation
6.2 Verification of design
156 6.3 Examinations and tests before putting into service
6.3.1 Braking system (5.9.2.2)
157 6.3.2 Electric installation
6.3.3 Checking of the traction (5.5.3)
6.3.4 Car safety gear (5.6.2)
158 6.3.5 Counterweight or balancing weight safety gear (5.6.2)
6.3.6 Pawl device (5.6.5)
159 6.3.7 Buffers (5.8.1, 5.8.2)
6.3.8 Rupture valve (5.6.3)
6.3.9 Restrictor/one-way restrictor (5.6.4)
160 6.3.10 Pressure test
6.3.11 Ascending car overspeed protection means (5.6.6)
6.3.12 Stopping of the car at landings and levelling accuracy (5.12.1.1.4)
6.3.13 Protection against unintended car movement (5.6.7)
161 6.3.14 Protection against falling/shearing (5.3.9.3.4)
7 Information for use
7.1 General
7.2 Instruction manual
7.2.1 General
7.2.2 Normal use
7.2.3 Maintenance
162 7.2.4 Examinations and tests
7.3 Logbook
164 Annex A (normative)List of the electric safety devices
167 Annex B (informative)Technical compliance documentation
168 Annex C (informative)Periodic examinations and tests, examinations and tests after an important modification or after an accident
C.1 Periodic examinations and tests
C.2 Examinations and tests after an important modification or after an accident
170 Annex D (informative)Machinery spaces – Access
171 Annex E (informative)Building interfaces
E.1 General provisions
E.2 Support of Guide Rails
E.3 Ventilation of car, well and machine rooms
E.3.1 General
172 E.3.2 Ventilation of the well and car
173 E.3.3 Ventilation of machine rooms
174 Annex F (normative)Pit access ladder
F.1 Types of pit access ladder
F.2 General provisions
F.3 Ladder uprights and rungs
F.3.1 Ladder uprights
175 F.3.2 Ladder rungs
F.4 Specific provisions for non fixed type ladders
F.5 Location of the ladder in the pit
177 Annex ZA Annex ZA(informative)Relationship between this European Standard and the essential requirements of Directive 2014/33/EU aimed to be covered

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BS EN 81-20:2020
$256.21