SIST EN 14198:2017+A1:2019
(Main)Railway applications - Braking - Requirements for the brake system of trains hauled by locomotives
Railway applications - Braking - Requirements for the brake system of trains hauled by locomotives
This European Standard specifies basic requirements for the braking of trains hauled by locomotives:
- For trains hauled by locomotives and intended for use in general operation each vehicle is fitted with the traditional brake system with a brake pipe compatible with the UIC brake system.
NOTE This ensures technical compatibility of the brake function between vehicles of various origins in a train (see 5.4).
- For trains hauled by locomotives and intended for use in fixed or predefined formation, the requirements on the vehicle and the train are necessary. In the case of a UIC brake system, this standard applies; if not, the EN 16185 series or the EN 15734 series applies.
If concerned, the UIC brake architecture described in this standard (see 5.4) can be used for brakes for multiple unit train and high speed trains and urban rail described in the EN 13452 series, the EN 16185 series and the EN 15734 series.
This European Standard also takes into account electrical and electronic control functions and additional brake systems like dynamic brakes and adhesion independent brakes.
The brake system requirements, which are specific for on-track machines are set out in EN 14033 1.
This European Standard does not apply to Urban Rail rolling stock braking system, which is specified by EN 13452 1.
Bahnanwendungen - Bremsen - Anforderungen an die Bremsausrüstung lokbespannter Züge
Diese Europäische Norm legt grundsätzliche Anforderungen an die Bremsung von lokbespannten Zügen fest:
- Für lokbespannte Züge zur Verwendung im allgemeinen Betrieb wird jedes Fahrzeug mit einem herkömmlichen Bremssystem mit einer Hauptluftleitung, die mit dem UIC-Bremssystem kompatibel ist, ausgestattet.
ANMERKUNG Dies stellt die technische Kompatibilität der Bremsfunktion zwischen Fahrzeugen verschiedener Herkünfte in einem Zugverband sicher (siehe 5.4).
- Für lokbespannte Züge zur Verwendung in festen oder vordefinierten Zugverbänden sind die Anforderungen bezüglich Fahrzeug und Zug notwendig. Im Falle eines UIC-Bremssystems ist diese Norm anwendbar, falls nicht, greift die Reihe EN 16185 oder die Reihe EN 15734.
Im Zweifelsfall kann die UIC-Bremsenarchitektur, die in dieser Norm beschrieben wird (siehe 5.4), für Bremsen von Triebzügen und Hochgeschwindigkeitszügen sowie für städtische Eisenbahnen, wie in EN 13452, EN 16185 und EN 15734 beschrieben, verwendet werden.
Diese Europäische Norm berücksichtigt ebenfalls die elektrischen und elektronischen Steuerungs- und Regelungsfunktionen sowie zusätzliche Bremssysteme, wie dynamische Bremsen und kraftschluss-unabhängige Bremsen.
Die Anforderungen an das Bremssystem von schienengebundenen Maschinen sind in EN 14033 1 enthalten.
Diese Europäische Norm gilt nicht für Bremssysteme der Schienenfahrzeuge des öffentlichen Nahverkehrs nach EN 13452-1.
Applications ferroviaires - Freinage - Exigences concernant le système de freinage des trains tractés par locomotive
La présente Norme Européenne définit les exigences fondamentales pour le freinage de trains remorqués par locomotive :
- pour les trains remorqués par locomotive et destinés à l’utilisation pour exploitation conventionnelle, chaque véhicule est équipé d’une architecture classique de système de freinage avec une conduite générale, compatible avec un système de freinage UIC.
NOTE Cela permet d’assurer la compatibilité technique de la fonction de freinage entre différents véhicules d’origines différentes dans un train (voir 5.4).
- Pour les trains remorqués par locomotive et destinés à l’utilisation en composition fixe ou prédéfinie, les exigences sont applicables sur le véhicule et sur le train. Dans le cas d’un système de freinage UIC, la présente norme s’applique ; dans d’autres cas la série de normes EN 16185 ou la série de normes EN 15734 s’appliquent.
Le cas échéant, l’architecture du système de freinage UIC décrite dans la présente norme (voir 5.4) peut être utilisée pour les freins des trains à unités multiples, pour les trains à grande vitesse et pour le rail urbain, décrites dans la série de normes EN 13452, EN 16185 et EN 15734.
La présente Norme Européenne prend en compte les fonctions de commande électriques et électroniques et des systèmes de freinage supplémentaires, tels que les freins dynamiques et les freins qui ne dépendent pas de l’adhérence.
Les exigences relatives aux systèmes de freinage spécifiques aux machines de construction et de maintenance empruntant exclusivement les voies ferrés sont définies dans l’EN 14033-1.
La présente Norme Européenne ne s’applique pas aux systèmes de freinage du matériel roulant du Rail Urbain, qui sont spécifiés dans l’EN 13452-1.
Železniške naprave - Zavore - Zahteve, ki jih morajo izpolnjevati zavorni sistemi vlakov, vlečeni z lokomotivami
Ta evropski standard določa osnovne zahteve za zaviranje vlakov, vlečenih z lokomotivami:
– Vsak vlak, ki je vlečen z lokomotivami in namenjen za splošno uporabo, je opremljen z običajnim zavornim sistemom z zavornim vodom, ki je združljiv z zavornim sistemom UIC.
OPOMBA: To zagotavlja tehnično združljivost funkcije zaviranja med vozili različnega izvora v vlaku (glej 5.4).
– Vlaki, ki jih vlečejo lokomotive in so namenjeni za uporabo v fiksni ali vnaprej določeni formaciji, morajo izpolnjevati zahtevane lastnosti za vozilo in vlak. Standard se uporablja za zavorni sistem UIC. V nasprotnem primeru se uporablja skupina standardov EN 16185 ali EN 15734.
V primeru negotovosti se zavorna arhitektura UIC, opisana v tem standardu (glej 5.4), lahko uporablja za zavore motornih vlakov, vlakov z velikimi hitrostmi in urbane železniške sisteme, opisane v skupinah standardov EN 13452, EN 16185 in EN 15734.
Ta evropski standard upošteva tudi električne in elektronske nadzorne funkcije in dodatne zavorne sisteme, kot so dinamične zavore in zavore, neodvisne od adhezije.
Zahteve za zavorne sisteme, ki so specifične za tirne stroje, so določene v standardu EN 14033 1.
Ta evropski standard se ne uporablja za zavorni sistem za tirna vozila za mestni prevoz, ki je opredeljen v standardu EN 13452 1.
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Bahnanwendungen - Bremsen - Anforderungen an die Bremsausrüstung lokbespannter ZügeApplications ferroviaires - Freinage - Exigences concernant le système de freinage des trains tractés par locomotiveRailway applications - Braking - Requirements for the brake system of trains hauled by locomotives45.060.01Železniška vozila na splošnoRailway rolling stock in general45.040Materiali in deli za železniško tehnikoMaterials and components for railway engineeringICS:Ta slovenski standard je istoveten z:EN 14198:2016+A1:2018SIST EN 14198:2017+A1:2019en,fr,de01-februar-2019SIST EN 14198:2017+A1:2019SLOVENSKI
STANDARD
SIST EN 14198:2017+A1:2019
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 14198:2016+A1
December
t r s z ICS
v wä r x rä r sâ
v wä r v r Supersedes EN
s v s { zã t r s xEnglish Version
Railway applications æ Braking æ Requirements for the brake system of trains hauled by locomotives Applications ferroviaires æ Freinage æ Exigences concernant le système de freinage des trains tractés par locomotive
Bahnanwendungen æ Bremsen æ Anforderungen an die Bremsausrüstung lokbespannter Züge This European Standard was approved by CEN on
s x October
t r s x and includes Amendment
approved by CEN on
w August
t r s zä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Rue de la Science 23,
B-1040 Brussels
9
t r s z CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s v s { zã t r s x ªA sã t r s z ESIST EN 14198:2017+A1:2019
EN 14198:2016+A1:2018 (E) 2 Contents Page European foreword . 4 1 Scope . 5 2 Normative References . 5 3 Terms and definitions . 7 4 Symbols and abbreviations . 9 5 Requirements . 9 5.1 General requirements of the train braking system . 9 5.2 General safety requirements . 10 5.2.1 Design principles . 10 5.2.2 Fire protection . 11 5.2.3 Environmental condition . 11 5.3 Requirements of the main brake system . 12 5.3.1 General requirements . 12 5.3.2 General functions on train level . 13 5.3.3 Additional requirements at the vehicle level . 18 5.4 “EN-UIC” brake system - based on air brake system . 20 5.4.1 Foreword . 20 5.4.2 General architecture . 20 5.4.3 Additional brake systems. 22 5.4.4 Functional requirements at train level . 22 5.4.5 Design requirements . 35 5.4.6 Brake functions at vehicle level . 36 5.5 Direct EP brake control . 41 5.6 Additional brake systems. 41 5.6.1 Dynamic brakes . 41 5.6.2 Direct brake . 44 5.6.3 Magnetic Track brake . 46 5.7 Brake management . 46 5.7.1 Brake blending at vehicle level . 46 5.7.2 Manual mode . 46 5.7.3 Brake blending at train level . 46 5.7.4 Jerk / ramps . 47 5.8 Wheel slide protection . 48 5.9 Compressed air supply . 49 5.9.1 General requirements . 49 5.9.2 Capacity. 49 5.9.3 Air quality . 49 5.10 Enhancement of wheel/rail adhesion . 49 6 Performances . 50 6.1 General aspects . 50 6.2 Performance calculation . 51 6.2.1 General . 51 6.2.2 Calculations for nominal mode . 52 6.2.3 Equivalent response and delay time . 53 6.2.4 Calculations for degraded mode . 53 SIST EN 14198:2017+A1:2019
EN 14198:2016+A1:2018 (E) 3 6.2.5 Calculations for degraded conditions . 53 6.3 Relevant load conditions . 53 6.3.1 Locomotives . 53 6.3.2 Coaches . 53 6.3.3 Wagons . 54 6.4 Service braking . 54 6.5 Thermal capacity . 55 6.6 Adhesion . 55 6.6.1 General requirements . 55 6.6.2 Emergency brake application . 56 6.6.3 Service brake application . 56 6.7 Parking brake performance . 56 Annex A (normative)
Vehicle requirements . 57 Annex B (informative)
Train related brake performance categories. 59 Annex C (informative)
Explanation of “proven design” concept . 63 Annex D (informative)
Corresponding standards EN – UIC . 64 Annex E (normative)
Brake pipe pressure control system . 66 E.1 General requirements . 66 E.2 Release position . 67 E.3 Service brake application . 68 E.4 Emergency brake application . 68 E.5 Overcharge function . 69 E.6 Quick release function . 70 Annex ZA (informative)
Relationship between this European
Standard and the Essential Requirements of EU Directive 2008/57/EC . 74 Bibliography . 78
SIST EN 14198:2017+A1:2019
EN 14198:2016+A1:2018 (E) 4 European foreword This document (EN 14198:2016+A1:2018) has been prepared by Technical Committee CEN/TC 256 “Railway applications”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 2019, and conflicting national standards shall be withdrawn at the latest by June 2019. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. This document includes Amendment 1 approved by CEN on 2018-08-05. This document supersedes !EN 14198:2016". The start and finish of text introduced or altered by amendment is indicated in the text by tags !". This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive 2008/57/EC. For relationship with EU Directive 2008/57/EC, see informative Annex ZA, which is an integral part of this document. !deleted text" According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 14198:2017+A1:2019
EN 14198:2016+A1:2018 (E) 5 1 Scope This European Standard specifies basic requirements for the braking of trains hauled by locomotives: — For trains hauled by locomotives and intended for use in general operation each vehicle is fitted with the traditional brake system with a brake pipe compatible with the UIC brake system. NOTE This ensures technical compatibility of the brake function between vehicles of various origins in a train (see 5.4). — For trains hauled by locomotives and intended for use in fixed or predefined formation, the requirements on the vehicle and the train are necessary. In the case of a UIC brake system, this standard applies; if not, the EN 16185 series or the EN 15734 series applies. If concerned, the UIC brake architecture described in this standard (see 5.4) can be used for brakes for multiple unit train and high speed trains and urban rail described in the EN 13452 series, the EN 16185 series and the EN 15734 series. This European Standard also takes into account electrical and electronic control functions and additional brake systems like dynamic brakes and adhesion independent brakes. The brake system requirements, which are specific for on-track machines are set out in EN 14033-1. This European Standard does not apply to Urban Rail rolling stock braking system, which is specified by EN 13452-1. 2 Normative References The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 286-3, Simple unfired pressure vessels designed to contain air or nitrogen - Part 3: Steel pressure vessels designed for air braking equipment and auxiliary pneumatic equipment for railway rolling stock EN 286-4, Simple unfired pressure vessels designed to contain air or nitrogen - Part 4: Aluminium alloy pressure vessels designed for air braking equipment and auxiliary pneumatic equipment for railway rolling stock EN 837-1:1996, Pressure gauges - Part 1: Bourdon tube pressure gauges - Dimensions, metrology, requirements and testing EN 854, Rubber hoses and hose assemblies - Textile reinforced hydraulic type - Specification EN 10220, Seamless and welded steel tubes - Dimensions and masses per unit length EN 10305-4, Steel tubes for precision applications - Technical delivery conditions - Part 4: Seamless cold drawn tubes for hydraulic and pneumatic power systems EN 10305-6, Steel tubes for precision applications - Technical delivery conditions - Part 6: Welded cold drawn tubes for hydraulic and pneumatic power systems EN 13749:2011, Railway applications - Wheelsets and bogies - Method of specifying the structural requirements of bogie frames EN 14478, Railway applications - Braking - Generic vocabulary SIST EN 14198:2017+A1:2019
EN 14198:2016+A1:2018 (E) 6 EN 14531-1, Railway applications - Methods for calculation of stopping and slowing distances and immobilization braking - Part 1: General algorithms utilizing mean value calculation for train sets or single vehicles EN 14531-2, Railway applications - Methods for calculation of stopping and slowing distances and immobilization braking - Part 2: Step by step calculations for train sets or single vehicles EN 14535-1, Railway applications — Brake discs for railway rolling stock — Part
1: Brake discs pressed or shrunk onto the axle or drive shaft, dimensions and quality requirements EN 14535-2, Railway applications - Brake discs for railway rolling stock - Part 2: Brake discs mounted onto the wheel, dimensions and quality requirements EN 14535-3, Railway applications - Brake discs for railway rolling stock - Part 3: Brake discs, performance of the disc and the friction couple, classification EN 14601, Railway applications — Straight and angled end cocks for brake pipe and main reservoir pipe EN 15220, Railway applications - Brake indicators EN 15273-2, Railway applications - Gauges - Part 2: Rolling stock gauge EN 15329, Railway applications - Braking - Brake block holder and brake shoe key for railway vehicles EN 15355, Railway applications — Braking — Distributor valves and distributor-isolating devices EN 15595, Railway applications — Braking — Wheel slide protection EN 15611, Railway applications — Braking — Relay valves EN 15612, Railway applications — Braking — Brake pipe accelerator valve EN 15663, Railway applications - Definition of vehicle reference masses EN 15734-1, Railway applications - Braking systems of high speed trains - Part 1: Requirements and definitions EN 15807, Railway applications - Pneumatic half couplings EN 16185-1, Railway applications - Braking systems of multiple unit trains - Part 1: Requirements and definitions prEN 16186-2, Railway applications - Driver's cab - Part 2: Integration of displays, controls and indicators EN 16207, Railway applications - Braking - Functional and performance criteria of Magnetic Track Brake systems for use in railway rolling stock EN 16241, Railway applications - Slack adjuster EN 16334, Railway applications - Passenger Alarm System - System requirements EN 16451, Railway applications - Braking - Brake pad holder EN 16452, Railway applications - Braking - Brake blocks SIST EN 14198:2017+A1:2019
EN 14198:2016+A1:2018 (E) 7 prEN 16834, Railway applications - Braking - Brake performance EN 45545 (all parts), Railway applications — Fire protection on railway vehicles EN 50125-1, Railway applications — Environmental conditions for equipment — Part 1: Rolling stock and on-board equipment EN 50163, Railway applications - Supply voltages of traction systems EN 50553, Railway applications - Requirements for running capability in case of fire on board of rolling stock EN ISO 1127, Stainless steel tubes - Dimensions, tolerances and conventional masses per unit length (ISO 1127) NF F 11-100:1995, Matériel roulant ferroviaire — Qualité de l'air comprimé destiné aux appareils et circuits pneumatiques UIC 541-3, Brakes - Disc brakes and their application - General conditions for the approval of brake pads UIC 541-5:2005, Brakes — Electropneumatic brake (ep brake) — Electropneumatic emergency brake override (EBO) UIC 541-6:2010, Brakes — Electropneumatic brake (ep brake) and Passenger alarm signal (PAS) for vehicles used in hauled consists 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 14478 1) and the following apply. 3.1 general operation mode of operation of units intended to be coupled with other units in a train formation which is not defined at design stage 3.2 brake mode in the “EN-UIC” design, mode that defines the brake force build up and release timings – namely “G” for Goods timings, i.e. slow-acting, “P” for Passenger timings, i.e. fast timing, typically controlled by the brake distributor in an air brake system 3.3 brake positions G, P, R and others in the “EN-UIC” design, position that defines the behaviour of the distributor valve in regard of brake application and release timings and brake cylinder forces, combined with additional brake systems 3.4 automatic brake application automatic application of the brakes when the brake line is interrupted
1) EN 14478 is under revision and the next edition will include several of the definitions currently contained in this document. SIST EN 14198:2017+A1:2019
EN 14198:2016+A1:2018 (E) 8 3.5 power brake uses compressed air to apply the brake 3.6 unit assessable entity which may be a single vehicle/locomotive or a group of vehicles that operate in a fixed formation 3.7 train operational formation consisting of one or more units 3.8 rear view position position in the front cab, where the driver can observe the rear end of the train and can command the traction and brake system for shunting 3.9 active driving cab only cab enabled to generate and transmit train wide command for traction and brake release 3.10 brake command vehicle vehicle where the active cab is located 3.11 emergency brake performance result of an emergency brake application in terms of stopping distances, retardation and brake response time 3.12 locomotive traction vehicle (or combination of several vehicles) that is not intended to carry a payload and has the ability to be uncoupled in normal operation from a train and to operate independently 3.13 braked weight percentage also known as
(lambda) brake performance in accordance with prEN 16834 3.14 braked weight weight which is obtained by multiplying the braked weight percentage by the total mass of the vehicle/train and dividing the result by 100 and is expressed in tonnes 3.15 build up time time to create an emergency brake application on a single vehicle starting from the beginning of the pressure rising until 95 % of the maximum brake cylinder pressure is reached 3.16 release time time for reducing the brake cylinder or the pre-control brake cylinder pressure on a single vehicle, starting from the beginning of the pressure drop down to 0,4 bar SIST EN 14198:2017+A1:2019
EN 14198:2016+A1:2018 (E) 9 Note 1 to entry: The pressure in the brake pipe is increased up to the normal working pressure, starting from 1,5 bar below it, in less than 2 s. 4 Symbols and abbreviations For the purposes of this document, the following symbols and abbreviations apply.
braked weight percentage AC Alternating Current BP Brake Pipe CCS Control Command and Signalling system CSM Common Safety Methods CW Marking for freight wagons depending on compliance with TSI WAG requirements, for application refer to Commission Regulation (EU) No 321/2013, Annex C, Clause 5 “Marking of units” DC Direct Current (“Berlin DC-Network” means network of the S-Bahn Berlin, Germany, which runs on DC) EMC Electromagnetic Compatibility ETCS European Train Control System GE Marking for freight wagons depending on compliance with TSI WAG requirements, for application refer to Commission Regulation (EU) No 321/2013, Annex C, Clause 5 “Marking of units” MRP Main Reservoir Pipe MTB Magnetic Track Brake RER Le Réseau Express Regional (Network of Express Train Lines in and around Paris, France) UIC International Union of Railways (Union internationale des chemins de fer) UK United Kingdom WSP Wheel Slide Protection system 5 Requirements 5.1 General requirements of the train braking system The purpose of the train braking system is to ensure that the train’s speed can be reduced or maintained on a slope, or that the train can be stopped within the maximum allowable braking distance. Braking also provides the immobilization of a train either for a certain period of time or permanently when it is not in operation or without any energy on board. Units designed and assessed to be operated in general operation (various formations of vehicles from different origins; train formation not defined at the design stage) shall be fitted with a technically compatible brake system to ensure the brake function in all vehicles of the train. SIST EN 14198:2017+A1:2019
EN 14198:2016+A1:2018 (E) 10 5.2 General safety requirements 5.2.1 Design principles The design, construction or assembly, maintenance and monitoring of safety-critical components, and more particularly of the components involved in train movements, shall ensure safety at the level corresponding to the aims laid down for the respective railway network. The braking techniques and the stresses exerted shall be compatible with the design of the tracks, engineering structures and signalling systems. Brake systems shall conform to the following: — the design principles listed in the standards on brake systems referred to in Clause 2 – normative references; — the brake performances defined in Clause 6; — the design principles in accordance with the requirements of this standard; — keeping within the specified effects on the infrastructure, particularly regarding EMC and noise emissions. In the course of the system design, risks shall be considered and mitigated. As a minimum, the following hazards shall be taken into account: a) the brake force applied is greater than the maximum design level: 1) impact on track shifting forces; 2) excessive jerk (impact on standing passengers); 3) significant damage to the contact surface of the wheels or friction partners; 4) impact on load assumptions in the fatigue life of the components generating the brake force; b) the brake performance is lower than the level of brake demanded: 1) keeping traction effort on the train while emergency brake is requested; 2) required emergency brake performance not achieved; 3) required parking brake performance not achieved; 4) holding brake performance not achieved; c) there is no brake force when demanded: 1) no emergency brake on the whole train when requested; 2) automatic (emergency) brake not initiated in the case of an unintended train separation (loss of train integrity); 3) parking brake: loss of performance over the time; SIST EN 14198:2017+A1:2019
EN 14198:2016+A1:2018 (E) 11 d) there is a brake force when a brake demand has not been made: 1) undue local brake application (pneumatic or parking); e) brake component failures that could cause death or injury or damage to the train or infrastructure, e.g. derailment. The hazards in the previous list shall be assessed in accordance with CSM. Concluding from the hazards listed above the emergency brake shall have a high level of integrity and shall always be available when the brake system is set up for operation, whereas the service brake, whilst it may share subsystems and components, etc. with the emergency brake, need not achieve the same level of integrity. Nevertheless, the service brake shall be designed to comply with the following requirements: — it shall be activated on the whole train when requested; — it shall cut off traction effort on the whole train while service brake is requested; — it shall provide service brake effort as high as requested. Independently from the service brake: — it shall be possible for the driver to immediately initiate the emergency brake by using the same lever which is used for service braking or by using another independent device; — the train protection systems shall be capable of initiating the emergency brake. The components shall be of a proven design and withstand any duties expected to occur during their period in service. The safety implication of any failures shall be limited by appropriate means; as d
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.