BS EN 81-50:2020

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Safety rules for the construction and installation of lifts. Examinations and tests – Design rules, calculations, examinations and tests of lift components

Published By	Publication Date	Number of Pages
BSI	2020	104

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Categories: 91.140.90 - Lifts. Escalators, BSI

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Description

This document specifies the design rules, calculations, examinations and tests of lift components which are referred to by other standards used for the design of passenger lifts, goods passenger lifts, goods only lifts, and other similar types of lifting appliances.

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PDF Pages	PDF Title
2	undefined
10	1 Scope 2 Normative references
11	3 Terms and definitions 4 List of significant hazards
13	5 Design rules, calculations, examinations and tests 5.1 General provisions for type examinations of safety components 5.1.1 Object and extent of the tests 5.1.2 General provisions
14	5.2 Type examination of landing and car door locking devices 5.2.1 General provisions 5.2.1.1 Field of application 5.2.1.2 Documents to be submitted 5.2.1.3 Test samples 5.2.2 Examination and tests 5.2.2.1 Examination of operation
15	5.2.2.2 Mechanical tests 5.2.2.3 Criteria for the mechanical tests 5.2.2.4 Electrical test
17	5.2.3 Test particular to certain types of locking devices 5.2.3.1 Locking device for horizontally or vertically sliding doors with several panels 5.2.3.2 Flap type locking device for hinged door 5.2.4 Type examination certificate 5.3 Type examination of safety gear 5.3.1 General provisions
18	5.3.2 Instantaneous safety gear 5.3.2.1 Test samples 5.3.2.2 Test
19	5.3.2.3 Determination of the permissible mass
20	5.3.3 Progressive safety gear 5.3.3.1 Statement and test sample 5.3.3.2 Test
22	5.3.3.3 Calculation of the permissible mass
23	5.3.3.4 Possible modification to the adjustments 5.3.4 Comments 5.3.5 Type examination certificate
24	5.4 Type examination of overspeed governors 5.4.1 General provisions 5.4.2 Check on the characteristics of the overspeed governor 5.4.2.1 Test samples 5.4.2.2 Test
25	5.4.3 Type examination certificate 5.5 Type examination of buffers 5.5.1 General provisions
26	5.5.2 Samples to be submitted 5.5.3 Test 5.5.3.1 Energy dissipation buffers
27	5.5.3.2 Energy accumulation buffers with non linear characteristics
29	5.5.4 Type examination certificate
30	5.6 Type examination of safety circuits containing electronic components and/or programmable electronic systems (PESSRAL) 5.6.1 General provisions 5.6.1.1 General 5.6.1.2 Safety circuits containing electronic components 5.6.1.3 Safety circuits based on programmable electronic systems 5.6.2 Test samples
31	5.6.3 Tests 5.6.3.1 Mechanical tests
32	5.6.3.2 Temperature tests (EN 60068214:2009) 5.6.3.3 Failure analysis of electric safety circuits 5.6.3.4 Functional and safety test of PESSRAL 5.6.4 Type examination certificate
33	5.7 Type examination of ascending car overspeed protection means 5.7.1 General provisions 5.7.2 Statement and test sample
34	5.7.3 Test 5.7.3.1 Method of test 5.7.3.2 Test procedure
35	5.7.3.3 Checking after the tests 5.7.4 Possible modification to the adjustments 5.7.5 Test report 5.7.6 Type examination certificate
36	5.8 Type examination of unintended car movement protection means 5.8.1 General provisions 5.8.2 Statement and test sample
37	5.8.3 Test 5.8.3.1 Method of Test
38	5.8.3.2 Test procedure 5.8.3.3 Checks after the test
39	5.8.4 Possible modification to the adjustments 5.8.5 Test report 5.8.6 Type examination certificate 5.9 Type examination of rupture valve/one-way restrictor 5.9.1 General provisions 5.9.1.1 General
40	5.9.1.2 Samples to be submitted 5.9.1.3 Test 5.9.1.4 Test procedure
43	5.9.1.5 Interpretation of the tests 5.9.1.6 Type examination certificate
44	5.10 Guide rails calculation 5.10.1 Range of calculation 5.10.2 Bending
45	5.10.3 Buckling
46	5.10.4 Combination of bending and compression/tension or buckling stresses
47	5.10.5 Flange bending
48	5.10.6 Deflections 5.11 Evaluation of traction 5.11.1 Introduction
49	5.11.2 Traction calculation 5.11.2.1 General 5.11.2.2 Evaluation of T1 and T2
50	5.11.2.3 Evaluation of the friction factor
53	5.11.3 Fomulae for a general case
56	5.12 Evaluation of safety factor on suspension ropes for electric lifts 5.12.1 General 5.12.2 Equivalent number Nequiv of pulleys 5.12.2.1 General
57	5.12.2.2 Evaluation of Nequiv(t) 5.12.2.3 Evaluation of Nequiv(p)
58	5.12.3 Safety factor
60	5.13 Calculations of rams, cylinders, rigid pipes and fittings 5.13.1 Calculation against over pressure 5.13.1.1 Calculation of wall thickness of rams, cylinders, rigid pipes and fittings 5.13.1.2 Calculation of the base thickness of cylinders (examples)
61	5.13.2 Calculations of the jacks against buckling 5.13.2.1 General
62	5.13.2.2 Single acting jacks
63	5.13.2.3 Telescopic jacks without external guidance, calculation of ram
64	5.13.2.4 Telescopic jacks with external guidance
66	5.14 Pendulum shock tests 5.14.1 General 5.14.2 Test rig 5.14.2.1 Hard pendulum shock device 5.14.2.2 Soft pendulum shock device 5.14.2.3 Suspension of the pendulum shock device 5.14.2.4 Pulling and triggering device 5.14.2.5 Test samples 5.14.3 Tests
67	5.14.4 Interpretation of the results 5.14.5 Test report
71	5.15 Electronic components – Failure exclusion
78	5.16 Design rules for programmable electronic systems (PESSRAL)
79	Annex A (normative)Model form of type examination certificate
80	Annex B (normative)Programmable electronic systems in safety related applications for lifts (PESSRAL) B.1 Common measures
82	B.2 Specific measures
86	B.3 Descriptions of possible measures
91	Annex C (informative)Example for calculation of guide rails C.1 General
93	C.2 General configuration for lifts with safety gear C.2.1 Safety gear operation C.2.1.1 Bending stress
94	C.2.1.2 Buckling C.2.1.3 Combined stress)
95	C.2.1.4 Flange bending) C.2.1.5 Deflections) C.2.2 Normal operation, running C.2.2.1 Bending stress C.2.2.2 Buckling C.2.2.3 Combined stress) C.2.2.4 Flange bending)
96	C.2.2.5 Deflection) C.2.3 Normal operation, loading C.2.3.1 Bending stress C.2.3.2 Buckling C.2.3.3 Combined stress)
97	C.2.3.4 Flange bending C.2.3.5 Deflections
98	Annex D (informative)Calculation of traction – Example
100	Annex E (informative)Equivalent number of pulleys Nequiv – Examples
101	Annex ZA (informative) Relationship between this European Standard and the essential requirements of Directive 2014/33/EU aimed to be covered

Additional information

Status	Under Review
Pages	104
Publication Date	2020-03-03
ISBN	978 0 580 51876 8
Standard Number	BS EN 81-50:2020
Title	Safety rules for the construction and installation of lifts. Examinations and tests – Design rules, calculations, examinations and tests of lift components
Identical National Standard Of	EN 81-50
Replaces	BS EN 81-50:2014
Descriptors	Safety measures, Service lifts, Automatic control systems, Lift wells, Walls, Sliding doors, Doors, Roofs, Strength of materials, Trap doors, Passenger lifts, Lifts, Floors, Accident prevention, Electrically-operated devices, Safety devices, Goods lifts, Installation, Ceilings, Emergency exits
Publisher	BSI
Committee	MHE/4
ICS Codes	91.140.90 - Lifts. Escalators

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