SIST EN 13731:2008
(Main)Lifting bag systems for fire and rescue service use - Safety and performance requirements
Lifting bag systems for fire and rescue service use - Safety and performance requirements
This European Standard specifies requirements for lifting bag systems, where intended operation is inflation by compressed air and used primarily by fire and rescue services.
This European Standard applies to lifting bag systems including some or all of the following components:
- hose assemblies and couplings;
- regulators;
- control devices;
- pressure indicators;
- safety valves;
- lifting bags.
This European Standard applies to lifting bag systems intended for operation under ambient temperatures between -20 °C and 55 °C.
This European Standard deals with all significant hazards, hazardous situations and events during the commissioning, operation and maintenance arising from a lifting bag system when it is used as intended and under the conditions of misuse which are reasonably foreseeable by the manufacturer (see Clause 4).
This European Standard specifies minimum performance requirements and test methods for lifting bag systems.
This European Standard does not establish the additional requirements for:
a) operation in severe conditions ( e.g. extreme environmental conditions such as: temperatures outside the range from -20 °C to + 55 °C, corrosive environment, tropical environment, contaminating environments, strong magnetic fields, potentially explosive atmospheres);
NOTE 1 If use of the lifting bag system is foreseen in severe conditions, this should be agreed between the purchaser and the manufacturer at the time of ordering. In this case an additional risk analysis should be carried out. Additional measures and additional information for use may be necessary.
b) the risk directly arising from any means for handling or transportation of the lifting bag system by equipment other than that designed as part of the lifting bag;
c) lifting bag systems manufactured for specialized use, e.g. the lifting of persons or heavy recovery where exceptional stroke movement is required;
d) any hazard arising from the source of compressed air, except where t
Hebekissenysteme für Feuerwehr und Rettungsdienste - Sicherheits- und Leistungsanforderungen
Coussins de levage a l'usage des services d'incendie et de secours - Prescriptions de sécurité et de performances
La présente Norme européenne spécifie les prescriptions relatives aux coussins de levage gonflés à l’air comprimé et qui sont principalement utilisés par les services de secours et de lutte contre l'incendie.
La présente Norme européenne s’applique aux coussins de levage ainsi qu’à certains ou à tous les composants suivants :
flexible et raccords ;
régulateurs ;
dispositifs de commande ;
manomètre ;
soupape de sécurité ;
coussin.
La présente Norme européenne s'applique aux coussins de levage destinés à être utilisés dans des températures ambiantes comprises entre – 20 °C et + 55 °C.
La présente Norme européenne traite de tous les phénomènes dangereux, situations et événements dangereux significatifs pendant la mise en service, le fonctionnement et la maintenance provenant des coussins de levage lorsqu’ils sont utilisés normalement et dans les conditions prévues par le constructeur (voir Article 4).
La présente Norme européenne spécifie les prescriptions de performances minimales et les méthodes d’essais des coussins de levage.
La présente Norme européenne ne définit pas les prescriptions complémentaires pour :
a) une utilisation dans des conditions sévères (par exemple : des conditions environnementales extrêmes telles que des températures au-delà de la plage comprise en – 20 °C et + 55 °C, un environnement corrosif, un environnement tropical, un environnement contaminé, des champs magnétiques forts, des atmosphères explosibles) ;
NOTE 1 Si une utilisation des coussins de levage est prévue dans des conditions sévères, il convient qu’elles fassent l’objet d’un accord entre l’acheteur et le fabricant au moment de la commande. Dans ce cas, il convient d’effectuer une analyse de risque complémentaire. Il est admis que des mesures additionnelles et des instructions pour l’utilisation complémentaires soient nécessaires.
Dvižne blazine in sistemi za gasilske in reševalne enote - Zahteve za delovanje in varnost v uporabi
General Information
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Lifting bag systems for fire and rescue service use - Safety and performance requirementsDvižne blazine in sistemi za gasilske in reševalne enote - Zahteve za delovanje in varnost v uporabiCoussins de levage a l'usage des services d'incendie et de secours - Prescriptions de sécurité et de performancesHebekissenysteme für Feuerwehr und Rettungsdienste - Sicherheits- und LeistungsanforderungenTa slovenski standard je istoveten z:EN 13731:2007SIST EN 13731:2008en,fr,de13.220.1011.160ICS:SLOVENSKI
STANDARDSIST EN 13731:200801-april-2008
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13731November 2007ICS 11.160; 13.220.10 English VersionLifting bag systems for fire and rescue service use - Safety andperformance requirementsCoussins de levage à l'usage des services d'incendie et desecours - Prescriptions de sécurité et de performancesHebekissenysteme für Feuerwehr und Rettungsdienste -Sicherheits- und LeistungsanforderungenThis European Standard was approved by CEN on 30 September 2007.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2007 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13731:2007: E
EN 13731:2007 (E) 2 Contents Page Foreword.3 Introduction.4 1 Scope.5 2 Normative references.6 3 Terms and definitions.7 4 List of significant hazards.9 5 Safety requirements and/or protective measures and performance requirements.11 5.1 General.11 5.2 Complete lifting bag system.11 5.3 Hose assemblies and couplings.11 5.4 Regulators.12 5.5 Control devices.12 5.6 Pressure indicators.13 5.7 Safety valves.13 5.8 Lifting bags.13 5.9 Performance requirements.14 6 Verification of safety requirements and/or protective measures and performance requirements.14 6.1 General.14 6.2 Complete lifting bag system.15 6.3 Hose assemblies and couplings.15 6.4 Regulators.16 6.5 Control devices.17 6.6 Pressure indicators.17 6.7 Safety valves.17 6.8 Lifting bags.17 6.9 Verification of performance requirements.22 7 Information for use.22 7.1 General.22 7.2 Signals and warning devices.22 7.3 Accompanying documents.22 7.4 Marking.22 Annex A (normative)
Information to be supplied.24 A.1 General.24 A.2 Training.24 A.3 Safe and efficient operation.24 A.4 Stowage and cleaning.25 A.5 Inspection, testing and maintenance.25 Annex B (informative)
Diagrammatic example of typical lifting bag system.26 Annex ZA (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/EC.27 Annex ZB (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC.28 Bibliography.29
EN 13731:2007 (E) 3 Foreword This document (EN 13731:2007) has been prepared by Technical Committee CEN/TC 192 “Fire service equipment”, the secretariat of which is held by BSI. 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 May 2008, and conflicting national standards shall be withdrawn at the latest by May 2008. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. 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(s). For relationship with EU Directive(s), see informative Annexes ZA and ZB, which are an integral part of this document. NOTE 1 It is recommended that users of this European Standard consider the desirability of independent (3rd party) certification of product conformity with this European Standard based on testing and continuing validation for the purpose of establishing the performance of a lifting bag system. NOTE 2 The equipment subject to this European Standard is not considered to be subject to the Pressure Equipment Directive. 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, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EN 13731:2007 (E) 4
Introduction This European Standard is a type C standard as stated in EN ISO 12100-1. The machinery concerned and the extent to which hazards, hazardous situations and events are covered are indicated in the scope of this document. Where provisions of this type C standard are different from those which are stated in type A or B standards, the provisions of this type C standard take precedence over the provisions of the other standards, for machines that have been designed and built according to the provisions of this type C standard. Lifting bag systems are used by Fire and Rescue Services principally to facilitate the release of persons trapped following accidents involving vehicles, heavy machinery, collapsed buildings, collapsed trenches, fallen trees and other natural objects. Lifting bag systems are generally used in conjunction with other means to support or stabilise the load being moved, for example, blocks, chocks and props. When compiling this European Standard, it was assumed that: a) the manufacturer will design and/or use components in accordance with the usual engineering practise and calculation codes, including all failure modes; b) only trained and competent persons whilst wearing suitable gloves, will use and operate the machinery; c) the working place is adequately lit; d) negotiations occur between the manufacturer and the purchaser concerning particular conditions for the use and places of use for the machinery related to health and safety, which are not within the limits of the scope of this European Standard.
EN 13731:2007 (E) 5
1 Scope This European Standard specifies requirements for lifting bag systems, where intended operation is inflation by compressed air and used primarily by fire and rescue services. This European Standard applies to lifting bag systems including some or all of the following components: hose assemblies and couplings; regulators; control devices; pressure indicators; safety valves; lifting bags. This European Standard applies to lifting bag systems intended for operation under ambient temperatures between -20 °C and 55 °C. This European Standard deals with all significant hazards, hazardous situations and events during the commissioning, operation and maintenance arising from a lifting bag system when it is used as intended and under the conditions of misuse which are reasonably foreseeable by the manufacturer (see Clause 4). This European Standard specifies minimum performance requirements and test methods for lifting bag systems. This European Standard does not establish the additional requirements for: a) operation in severe conditions ( e.g. extreme environmental conditions such as: temperatures outside the range from -20 °C to + 55 °C, corrosive environment, tropical environment, contaminating environments, strong magnetic fields, potentially explosive atmospheres); NOTE 1 If use of the lifting bag system is foreseen in severe conditions, this should be agreed between the purchaser and the manufacturer at the time of ordering. In this case an additional risk analysis should be carried out. Additional measures and additional information for use may be necessary. b) risk directly arising from any means for handling or transportation of the lifting bag system by equipment other than that designed as part of the lifting bag; c) lifting bag systems manufactured for specialized use, e.g. the lifting of persons or heavy recovery where exceptional stroke movement is required; d) any hazard arising from the source of compressed air, except where this is a manually operated air pump. NOTE 2 Where the source is from an air compressor or from a pressurised cylinder or other similar source, it is assumed that the source conforms to an appropriate European Standard or legislation. This European Standard is not dealing with noise, as it is not considered to be a significant hazard. This European Standard is not applicable to lifting bag systems which are manufactured before the date of its publication by CEN.
EN 13731:2007 (E) 6 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 659, Protective gloves for firefighters EN 764-1:2004, Pressure equipment — Part 1: Terminology — Pressure, temperature, volume, nominal size EN 837-1, Pressure gauges — Part 1: Bourdon tube pressure gauges — Dimensions, metrology, requirements and testing EN 837-2, Pressure gauges — Part 2: Selection and installation recommendations for pressure gauges EN 837-3, Pressure gauges — Part 3: Diaphragm and capsule pressure gauges — Dimensions, metrology, requirements and testing EN 894-1, Safety of machinery — Ergonomics requirements for the design of displays and control actuators — Part 1: General principles for human interactions with displays and control actuators EN 894-2, Safety of machinery — Ergonomics requirements for the design of displays and control actuators — Part 2: Displays EN 894-3, Safety of machinery — Ergonomics requirements for the design of displays and control actuators — Part 3: Control actuators EN 62079, Preparation of instructions — Structuring, content and presentation (IEC 62079:2001) EN ISO 2398, Rubber hose, textile-reinforced for compressed air — Specification (ISO 2398:1995) EN ISO 2503, Gas welding equipment — Pressure regulators for gas cylinders used in welding, cutting and allied processes up to 300 bar (ISO 2503:1998) EN ISO 4126-1, Safety devices for protection against excessive pressure — Part 1: Safety valves
(ISO 4126-1:2004) EN ISO 4672:1999, Rubber and plastics hoses — Sub-ambient temperature flexibility tests (ISO 4672:1997) EN ISO 5774, Plastics hoses, textile-reinforced, for compressed air — Specification (ISO 5774:1997) EN ISO 7751, Rubber and plastics hoses and hose assemblies — Ratios of proof and burst pressure to design working pressure (ISO 7751:1991) EN ISO 12100-1:2003, Safety of machinery — Basic concepts, general principles for design — Part 1: Basic terminology, methodology (ISO 12100-1:2003) EN ISO 12100-2:2003, Safety of machinery — Basic concepts, general principles for design — Part 2: Technical principles (ISO 12100-2:2003) ISO 5598:1985, Fluid power systems and components — Vocabulary
EN 13731:2007 (E) 7 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN ISO 12100-1:2003, EN 764-1:2004, ISO 5598:1985 and the following apply. 3.1 pressure pressure relative to atmospheric pressure, i.e. gauge pressure
3.2 allowable pressure (AP) maximum operating pressure for each component of the system stated in bar 3.3 control device component of a lifting bag system, being operated by manual actuator(s), which controls the inflation and deflation of a lifting bag NOTE Where a manual pump (hand or foot operated) forms part of the control device of the lifting bag system, it is considered to be part of the system, and all appropriate requirements should apply. 3.4 force product of the allowable pressure and effective surface of the lifting bag stated in kilo-Newtons 3.5 inlet connection tube or opening incorporated into the lifting bag in such a manner that it is not readily removable, to which is attached a quick action coupling for the attachment of a hose 3.6 hose assembly hose complete with attached quick-action coupling(s) with or without fittings 3.7 insertion height smallest opening into which a deflated bag can be inserted 3.8 lifting bag portable inflatable bag, used to apply force on objects, and/or lift or move objects in a prescribed manner 3.9 lifting bag system combination of components, excluding the energizing source unless it is a manual pump, which, when assembled, will enable a lifting bag(s) to be inflated by compressed air from the energizing source under the control of an operator and to subsequently be deflated also under the control of an operator 3.10 lifting capacity maximum load in tonnes, which a lifting bag will lift at allowable pressure, as a result of the force generated 3.11 lifting height sum of the insertion height plus a proportion of the stroke
EN 13731:2007 (E) 8 3.12 loss of integrity or other structural failure leakage, delaminating (blisters) or unexpected deformation 3.13 manual actuator component of the control device which, when operated, activates the control device, and is designed to be operated by a single person 3.14 maximum air requirement volume × (allowable pressure +1 bar) = the air required in litres at normal temperature and pressure 3.15 maximum lifting height sum of the stroke and the insertion height 3.16 regulator device for regulating a generally variable inlet pressure to as constant as possible an outlet pressure 3.17 pre-set regulator regulator that is set before incorporation into a lifting bag system to a defined pressure level and that is not intended to be adjusted easily by the user 3.18 pressure indicator device that measures and visually displays pressure 3.19 pressure volume (PV) volume in litres multiplied by pressure in bars expressed in bar litres (e.g. 200 litres × 0,5 bar = 100 bar litres) 3.20 couplings connectors attached with or without fittings to the hose assemblies and/or equipment with the purpose of connecting and releasing these hose assemblies to/from other matching connectors within the system, with the aim to transfer compressed air from one component in the system to another 3.21 quick-action couplings couplings constructed to allow the connection and release method to operate quickly and easily 3.22 volume geometric internal volume of the lifting bag when inflated to allowable pressure without load, stated in litres 3.23 safety valve device which relieves excessive pressure 3.24 stroke distance from the insertion height to the maximum inflated position at allowable pressure without load
EN 13731:2007 (E) 9 4 List of significant hazards This clause contains all the significant hazards, hazardous situations and events, as far as they are dealt with in this document, identified by risk assessment as significant for this type of machinery and which require action to eliminate or reduce the risk. The significant hazards are given in Table 1, which is based upon EN 1050. Also shown are the subclause references to the safety requirements and/or protective measures in this document. Before using this document it is important to carry out a risk assessment of the lifting bag system to check that its significant hazards are identified in this clause. Table 1 — List of significant hazards EN 1050 Annex A Reference
Significant hazards Corresponding requirements in this Standard 1 Mechanical hazards due to machine parts or work pieces: 1 g) Liquids and gases under pressure 5.2.2; 5.2.3; 5.3.1; 5.3.2; 5.4.2; 5.4.3; 5.5.3; 5.5.4; 5.5.7; 5.5.8; 5.5.9; 5.5.11; 5.6.2; 5.7.1; 5.7.3; 5.8.1;
1.1 Crushing hazard 5.5.3; 5.5.4; 5.5.8; 5.5.9; A.3.2 c) 1.9 High pressure fluid injection or ejection hazard 5.3.4; 5.3.5; 5.3.6; 5.3.7 8 Hazards generated by neglecting ergonomic principles in machinery design 8.1 Unhealthy postures or excessive effort A.3.2 a); 5.8.3 8.3 Neglected use of Personal Protective Equipment (PPE) 5.3.7; 5.5.12 8.5 Mental overload and underload, stress 5.2.2; 5.5.5; 5.5.8; 5.5.10 8.6 Human error, human behaviour 5.2.2; 5.3.5; 5.3.6; 5.3.7; 5.4.3; 5.5.4; 5.5.9; 5.8.4 8.7 Inadequate design, location or identification of manual controls 5.4.1; 5.4.3; 5.5.2; 5.5.4; 5.5.5; 5.5.6; 5.5.7; 5.5.8; 5.5.9; 5.5.10; 5.5.12; 5.6.1; 5.7.1 8.8 Inadequate design or location of visual displays 5.5.2; 5.5.4; 5.6.1 10 Unexpected start-up, unexpected over-run/over-speed 10.1 Failure/disorder of the control system 5.7.1; 5.7.2; 5.7.3 10.2 Restoration of energy supply after an interruption 5.5.5; 5.5.9 10.6 Errors made by the operator (due to mismatch of machinery with human characteristics and abilities, see 8.6) 5.2.2; 5.3.5; 5.3.6; 5.3.7 5.4.3
EN 13731:2007 (E) 10 13 Failure of power supply 5.5.8; 5.5.9; 5.7.3; 5.8.4 14 Failure of the control device 5.7.1; 5.7.2; 5.7.3 15
Errors of fitting 5.3.5; 5.3.6; 5.3.7; 5.5.8; 5.5.9; 5.5.10 5.5.12; 5.2.2 18 Loss of stability A.3.2 c); A.3.2 d) Additional Hazards 22 Due to the control system 5.5.3 22.2 Inadequate design of manual controls and their mode of operation 5.5.3; 5.5.4; 5.5.5; 5.5.6; 5.5.7; 5.5.8; 5.5.9; 5.5.10 23 Handling
5.8.3; A.3.2.a) 25 From/to third persons 25.1 Unauthorized start up/use A.2.1 25.2 Drift of part from stopping position 5.5.5 25.3 Lack or inadequacy of visual or acoustic warning means 5.5.2; 5.6; 5.7.2 26 Insufficient instructions for the operator A.1; A.2.1; A.2.2; A.3.2 27 Mechanical hazards and hazardous events 27.1 Load falls, collisions, machine tipping caused by: 27.1.1 Lack of stability 5.5.3; 5.5.4; 5.5.5; 5.5.6; 5.5.7; 5.5.8; 5.5.9; A.3.2 c); A.3.2 d) 27.1.2 Uncontrolled loading - overloading
5.8.4; 5.8.6; 5.2.1 27.1.3 Uncontrolled amplitude of movements 5.5.3; 5.5.9; 5.8.5 27.1.4 Unexpected/unintended movement of loads A.3.2 c); A.3.2 d) 27.1.5 Inadequate holding devices/accessories 5.8.3; A.3.2 a) 27.4 Insufficient mechanical strength of parts 5.3.3; 5.8.1; 5.8.2; 5.8.3; 5.8.5 27.8 Abnormal conditions of assembly/testing/use/maintenance A.1; A.2; A.3; A.4 27.9 The effect of load on persons A.3.2 a)
EN 13731:2007 (E) 11 5 Safety requirements and/or protective measures and performance requirements 5.1 General Lifting bag systems shall comply with the relevant safety requirements and/or protective measures and performance requirements of this European Standard.
In addition, the system shall be designed according to the principles of EN ISO 12100-2 for hazards relevant but not significant, which are not dealt with by this document (e.g. sharp edges and noise). NOTE For hazards which are to be reduced by the application of a B-level standard such as EN 894 (all parts), the manufacturer should carry out a risk assessment to establish the requirements of the type B-standard which are to be applied. This specific risk assessment should be part of the general risk assessment of the machine. Where the means of reducing the risk is by a safe system of working the lifting bag equipment, the manufacturer shall include in the Information for Use details of the system and of the elements of training required by the operating personnel (see Clause 7 and Annex A). 5.2 Complete lifting bag system 5.2.1 A lifting bag system (see Figure B.1) shall include the following components: hose and/or hose assemblies; regulator; control device for each lifting bag; pressure indicators for each lifting bag; safety valve for each lifting bag; lifting bag(s). 5.2.2 Components of a lifting bag system as shown in Figure B.1 shall be designed only to fit mating components that are intended for use with the same allowable pressure. 5.2.3 All components in the system shall be designed to mitigate unintentional hazardous movement due to airflow: e.g. ‘snaking’. 5.2.4 The complete lifting bag system shall be capable of being operated within the ambient temperature range of –20 °C to + 55 °C. 5.3 Hose assemblies and couplings 5.3.1 Rubber hoses shall conform to EN ISO 2398 and plastic hoses shall conform to EN ISO 5774. 5.3.2 Hose assemblies shall conform to EN ISO 7751. 5.3.3 At a temperature of (-20 ± 2) °C, hoses shall achieve a bend radius of 75 mm, or less. 5.3.4 Hose fittings and quick action couplings shall withstand an axial pulling force of at least 1 000 N when the internal pressure is at atmospheric pressure and when at allowable pressure. There shall be no leakage. 5.3.5 Quick-action couplings shall require at least two separate manual actions to disconnect.
EN 13731:2007 (E) 12 5.3.6 Couplings on the inlet side of a control device, except those connected directly to the energising source, shall be quick-action couplings in accordance with 5.3.5 or shall be automatically self-sealing. 5.3.7 It shall be possible to connect and disconnect hose assemblies whilst wearing protective gloves for firefighters according to EN 659 and without the use of separate tools. 5.4 Regulators 5.4.1 Regulators shall be included in the lifting bag system as close as possible to the air supply. NOTE A manual pump can fulfil the function of a regulator as defined in 3.16. 5.4.2 Regulators shall conform to EN ISO 2503. 5.4.3 Regulators supplied without gauges shall be pre-set and not readily adjustable to prevent unauthorised adjustment (i.e. by design making the use of a tool necessary, by a recessed adjustment device or by a sealed cover). The maximum inlet and outlet pressures shall be clearly indicated on such regulators. 5.4.4 Regulators shall be able to control the flow rate over the complete range they are intended for. 5.5 Control devices 5.5.1 Control devices shall conform to the relevant parts of EN 894. 5.5.2 To enable the operator to set the regulator the inlet to a control device(s) shall be unambiguously marked with the allowable pressure at the inlet. 5.5.3 The control device shall permit the speed of inflation and deflation of the lifting bag to be gradually and progressively varied under the operator’s control. 5.5.4 The control device shall be legibly and indelibly marked or labelled to indicate all directions of operation. NOTE Where two or more control devices are connected to the same inlet(s), hose assemblies on the outlet side should preferably be colour coded. 5.5.5 When a manual actuator on a control device is actuated in a direction of operation, the lifting bag shall operate only in the direction selected. 5.5.6 When a manual actuator is moved from any position of actuation to a neutral position, the flow of compressed air shall cease within 0,5 s. 5.5.7 When a manual actuator is released, it shall automatically return to the neutral position within 0,5 s. 5.5.8 Where a system includes two or more control devices connected to the same inlet(s), the operation of one manual actuator shall only inflate or deflate the lifting bag to which it is connected, regardless of the position of other manual actuators. 5.5.9 Operation of one or more control devices in the direction of inflation shall not lead to the deflation of any bag when: a) supply connection to the control device is disconnected, or b) supply of compressed air is exhausted or is at pressures less than the pressure in a lifting bag, or c) there is a sudden line break of the supply hose to the control device.
EN 13731:2007 (E) 13 5.5.10 Where a control device is provided with more than one inlet connection for energising sources, it shall not be possible for the compressed air from one connection to pass out of another inlet with and without hose connected. 5.5.11 Control devices shall withstand a pressure of 2 times allowable pressure without leakage. 5.5.12 It shall be possible to operate the control device while wearing protective gloves for firefighters according to EN 659. 5.6 Pressure indicators 5.6.1 A pressure indicator displaying the pressure in the lifting bag shall be provided in a position at which it can be read unambiguously by the operator while operating the control device. 5.6.2 Pressure gauges shall conform to EN 837-1, EN 837-2 or EN 837-3. NO
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.