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BS EN 15595:2018:2021 Edition

BS EN 15595:2018:2021 Edition

$215.11

Railway applications. Braking. Wheel slide protection

Published By Publication Date Number of Pages
BSI 2021 108
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This document specifies the criteria for system acceptance and type approval of a wheel slide protection (WSP) system. It also specifies criteria for the implementation of WSP to specific vehicle applications and specific operating conditions, as well as requirements for wheel rotation monitoring (WRM). This includes the design, testing and quality assessment of the WSP and WRM systems and their components. This European Standard does not apply to vehicles on rubber tyred wheels or vehicles equipped with hydraulic brakes.

PDF Catalog

PDF Pages PDF Title
2 undefined
10 1 Scope
2 Normative references
11 3 Terms and definitions
14 4 Symbols and abbreviations
5 Requirements
5.1 Functional requirements
5.1.1 Objectives of wheel slide protection
15 5.1.2 General functional requirements
5.1.3 Control of the brake force
5.1.3.1 Requirements for pneumatic actuation of the friction brake
5.1.3.2 Dynamic brake
16 5.1.4 Wheel slide protection watchdog (safety timer)
5.1.5 Air supply
5.1.6 Wheel diameter differences
5.1.7 Wheel rotation monitoring (WRM)
5.1.7.1 General
5.1.7.2 Functional characteristics
5.1.7.3 System requirements
17 5.1.7.4 Recommended features
5.1.8 Diagnostics
5.1.8.1 Permanent self-diagnostic
5.1.8.2 Manually initiated test
18 5.1.8.3 Automatically initiated test
5.1.8.4 Fault management
5.1.8.5 Service interface
5.2 Design requirements
5.2.1 Environmental specification
5.2.2 Fire behaviour
19 5.2.3 RAMS
5.2.3.1 Reliability
5.2.3.2 Safety
5.2.3.3 Maintainability
5.2.3.4 Degraded mode conditions
5.2.4 Mechanical construction
5.2.5 Power management
20 5.2.6 Software
5.2.7 Electronic control unit Input/Output (I/O)
5.2.8 Sensor – axle speed acquisition
5.2.9 Actuator – modification of brake force
5.2.9.1 General requirements
5.2.9.2 Pneumatic systems
21 5.2.9.3 Electrical connection
5.3 Installation recommendations
5.3.1 General installation requirements
5.3.2 Air system
5.3.2.1 Air supply
5.3.2.2 Piping and layout
5.3.3 Power supply and electrical system
5.3.3.1 Protection
22 5.3.3.2 Control
5.4 Performance requirements for WSP
5.4.1 Performance
23 5.4.2 Stopping distance and adhesion improvement
5.4.2.1 Low adhesion
5.4.2.2 Very low adhesion
5.4.2.3 Extremely low adhesion
5.4.3 Wheelset slide limits
5.4.3.1 Low adhesion wheelset slide limits
24 5.4.3.2 Very low and extremely low adhesion wheelset slide limits
5.4.4 Track damage
5.4.5 Maximum deceleration
25 5.4.6 Air consumption
5.4.7 Output based on speed information provided by WSP
26 6 Range of tests
6.1 General
6.1.1 Test classifications
6.1.2 Assessor
6.2 Type Test
6.2.1 General
6.2.2 Test requirements
6.2.3 Individual component Type Test
6.2.3.1 Wheel slide protection controller
27 6.2.3.2 Peripheral component tests
6.3 Vehicle Implementation Test
6.3.1 General
28 6.3.2 Test requirements
6.3.3 Conformity of previous vehicle tests
6.4 List of tests
6.4.1 Standard tests
6.4.2 Drag tests
29 6.4.3 Test methods for speeds from 160 up to 200 km/h
6.4.4 Test methods for speeds > 200 km/h
6.4.5 Supplementary higher deceleration tests
6.4.6 Supplementary approval tests for WSP acting in vehicles with brakes that are independent of adhesion
6.4.7 Supplementary approval tests involving tractive units and trainsets having dynamic brakes
30 6.4.8 Testing of wheel rotation monitoring (WRM)
36 6.5 Re-testing
6.5.1 General
6.5.2 Hardware
37 6.5.3 Software
7 Test methods
7.1 General
38 7.2 Measurement
39 7.3 Tests on vehicle
7.3.1 General
40 7.3.2 Generation of degraded adhesion
7.3.2.1 Generation of low adhesion
7.3.2.2 Generation of very or extremely low adhesion
7.3.2.3 Interval spraying
7.3.3 Environmental conditions
7.3.3.1 General
7.3.3.2 Uncoupled testing
41 7.3.3.3 Drag testing
7.3.3.4 Air supply
7.4 Test in simulation environment
7.4.1 General
7.4.2 Tests on simulation rig
7.4.2.1 Simulation validity test for specific vehicle model
7.4.2.2 Simulator tests
42 7.4.3 Additional specific simulator tests
7.4.4 Optional tests
8 Evaluation of test
8.1 Correcting the stopping distances
8.2 Number and validity of dry tests
8.3 Evaluation of slide test
8.3.1 General
43 8.3.2 Evaluation of stopping performance
44 8.3.3 Evaluation of test validity
8.3.3.1 General
8.3.3.2 Assessment of initial adhesion
46 8.3.3.3 Minimum slide criterion
48 8.3.3.4 Assessment of a slide test
52 8.3.3.5 Test assessment criteria
53 8.3.4 Evaluation of relative air consumption
54 9 Documentation of tests
9.1 Test Specification
55 9.2 Test report
56 10 Routine test and inspection
11 Designation, identification and marking
57 Annex A (normative)Tables linking the WSP / WRM Requirements to Tests and Test Criteria
77 Annex B (normative)Minimum requirements for a WSP simulator
B.1 General
B.1.1 General
B.1.2 Use of the simulator model
83 B.2 Adhesion model
B.2.1 General
B.2.2 Constant adhesion condition
B.2.2.1 Dry rail conditions
B.2.2.2 Sustained low adhesion condition
B.2.3 Variable adhesion condition
B.2.3.1 Artificial contaminant
B.2.3.2 Naturally occurring variable adhesion
84 B.2.4 Adhesion conditioning factors
B.2.4.1 Adhesion versus speed relationship
B.2.4.2 Wheel (self) conditioning
B.2.4.3 Rail conditioning
B.3 Test and performance model
B.3.1 General
B.3.2 Simulator performance
B.3.3 Test requirements
B.3.4 Stopping performance
85 B.3.5 Wheel damage
B.3.6 Air system
B.3.7 Pass/fail limits
B.3.8 Fault conditions
86 B.3.9 WSP outputs
B.4 Vehicle performance model
B.4.1 General
B.4.2 Friction material
B.4.3 Pneumatic actuator/brake demand
B.4.4 Body/Bogie/wheel dynamics
87 B.5 Vehicle functional model
B.5.1 General
B.5.2 Functional inputs
B.6 Simulator validation
B.6.1 General
B.6.2 Validation of test benches
B.6.2.1 General
88 B.6.2.2 Accuracy
89 B.6.2.3 Repeatability
90 B.6.3 Management
91 Annex C (informative)Example of customer specific simulator tests
C.1 Naturally occurring variable adhesion tests
C.1.1 General
C.1.2 Sequence
93 C.1.3 Measurement and pass/fail criteria
C.1.3.1 Braking distance
94 C.1.3.2 Air consumption
C.1.3.3 Wheel Locks
C.2 Sustained low adhesion track condition (SLAC) Tests
C.2.1 Sequence
95 C.2.2 Measurement/pass fail criteria
C.2.2.1 Braking distance
C.2.2.2 Air consumption
C.2.2.3 Wheel Locks
C.2.3 WSP speed reference (vref)
C.3 Operating speeds above 160 km/h
C.3.1 Criteria
96 C.3.2 Sequence
C.3.3 Measurement and pass/fail criteria
C.3.3.1 Braking distance
C.3.3.2 Air consumption
C.3.3.3 Wheel Locks
C.3.3.4 WSP speed reference (vref)
97 Annex D (informative)Optional tests
D.1 Sander system tests — Criteria
98 D.2 Dynamic braking system tests — Criteria
D.3 Peripheral output tests — Criteria
100 Annex E (informative)Typical diagram of a real WSP test
102 Annex F (informative)In-service monitoring
103 Annex G (informative)Braking configurations
G.1 Per bogie control
G.2 Per wagon control
104 Annex H (informative)Changes between Revision 1 and Revision 2 of EN 15595
105 Annex ZA(informative)Relationship between this European Standard and the Essential Requirements of EU Directive 2008/57/EC aimed to be covered

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BS EN 15595:2018
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