SIST EN 1804-1:2002+A1:2010
(Main)Machines for underground mines - Safety requirements for hydraulic powered roof supports - Part 1: Support units and general requirements
Machines for underground mines - Safety requirements for hydraulic powered roof supports - Part 1: Support units and general requirements
This standard specifies the safety requirements for support units when used as specified by the manufacturer or his authorised representative. Examples of support units are frame supports, chock supports, shield supports, paired frames and push-pull support systems including the components of advancing and anchoring devices which provide support functions. This part of the standard excludes fixing elements on the conveyor, coal-winning equipment, power set legs and rams, valves, hydraulic and electro-hydraulic control units, lighting and signalling facilities and other ancillary equipment. This standard applies to support units used at temperatures from -10° C to 60° C. This standard also applies to support components and support accessories which are provided if the support unit is fitted with stowing equipment. This standard identifies and takes account of: - Possible hazards which may be caused by the operation of support units; - Areas and operating conditions which may create such hazards; - Hazardous situations which may cause injury or may be damaging to health; This standard describes methods for the reduction of these hazards. A list of hazards covered appears in clause 4. This European standard does not establish the additional requirements for: - Specially corrosive environments; - Hazards occurring during construction, transportation, decommissioning; - Earthquake. This standard is applicable to all support units placed on the market for the first time, which are manufactured after the date on which this standard was published.
Maschinen für den Bergbau unter Tage - Sicherheitsanforderungen für hydraulischen Schreitausbau - Teil 1: Ausbaugestelle und allgemeine Anforderungen
Diese Europäische Norm legt die Sicherheitsanforderungen für die vom Hersteller oder seinem bevollmächtigten
Vertreter vorgesehene bestimmungsgemäße Verwendung von Ausbaugestellen fest. Beispiele für Ausbaugestelle
sind: Ausbaurahmen, Ausbauböcke, Ausbauschilde, Ausbaugespanne und Ausbauzüge einschließlich der
Rückeinrichtungen und der Teile von Abspannungen, welche Ausbaufunktionen haben, jedoch ausschließlich der
Anschlagelemente am Förderer, der Gewinnungseinrichtungen, der Stempel und Zylinder, der Ventile, der
hydraulischen und elektrohydraulischen Steuerungseinrichtungen, der Beleuchtungs- und Signaleinrichtungen
sowie sonstiger Hilfseinrichtungen.
ANMERKUNG Einige Komponenten werden in anderen Teilen dieser Normenreihe behandelt.
Diese Norm gilt für Ausbaugestelle, die bei Umgebungstemperaturen zwischen −10 °C bis 60 °C eingesetzt
werden.
Diese Norm bezieht sich ebenfalls auf Ausbauteile und Ausbauzubehör, die vorgesehen sind, wenn das
Ausbaugestell mit Versatzeinrichtungen ausgerüstet wird. Diese Norm identifiziert und berücksichtigt:
⎯ die Gefährdungen, die womöglich durch den Betrieb von Ausbaugestellen hervorgerufen werden;
⎯ die Gefahrenbereiche und die Betriebsbedingungen, die irgendeine Gefährdung verursachen und
⎯ die Situationen, die zu Gefährdungen führen können, die eine Verletzung oder Gesundheitsschädigung
verursachen.
Diese Norm beschreibt Methoden zur Reduzierung dieser Gefährdungen.
Abschnitt 4 enthält eine Liste der behandelten Gefährdungen.
Diese Europäische Norm spezifiziert keine zusätzlichen Anforderungen für:
⎯ besonders korrosive Umgebung;
⎯ Risiken bei Herstellung, Transport und Außerbetriebnahme;
⎯ Erdbeben.
Diese Norm gilt für alle Ausbaugestelle, die nach dem Ausgabedatum dieser Norm erstmalig in Verkehr gebracht
wurden.
Machines pour mines souterraines - Exigences de sécurité relatives aux soutènements marchants applicables aux piles - Partie 1: Unités de soutènement et exigences générales
La présente norme précise les exigences de sécurité pour les unités de soutènement lorsqu’elles sont utilisées tel que spécifié par le fabricant ou son mandataire. Les exemples d’unités de soutènement sont les piles à flèche, piles monoblocs, piles-boucliers, piles à file et systèmes de soutènement «push-pull» y compris les composants de dispositifs d'avancement et d'ancrage qui assurent le soutènement du toit. La présente partie de la norme exclut les éléments de fixation sur le convoyeur, les équipements d'abattage du charbon, les étançons et vérins à pose mécanisée, les soupapes, les unités de commande hydrauliques et électro-hydrauliques, les installations d'éclairage et de signalisation et les autres équipements auxiliaires.
NOTE Certains équipements sont traités dans d’autres parties de cette norme.
Cette norme s’applique aux unités de soutènement utilisées à des températures comprises entre – 10 °C et 60 °C.
Cette norme s'applique également aux composants et accessoires du soutènement fournis lorsque l'unité de soutènement est munie d'équipements de remblayage. La présente norme identifie et tient compte :
— des risques potentiels pouvant résulter de l’utilisation des unités de soutènement ;
— des zones et des conditions d’utilisation susceptibles de créer de tels risques ;
— des situations dangereuses susceptibles d’entraîner des blessures ou pouvant affecter la santé.
La présente norme décrit des méthodes de réduction de ces phénomènes dangereux.
Une liste des phénomènes dangereux couverts est donnée à l’article 4.
Cette norme européenne ne définit pas d’exigences supplémentaires concernant :
— les milieux environnants particulièrement corrosifs ;
— les risques dus à la construction, au transport et à la mise hors service ;
— les tremblements de terre.
La présente norme est applicable à toutes les unités de soutènement commercialisées pour la première fois après leur fabrication qui suit la date de publication de la présente norme.
Stroji za podzemne rudnike - Varnostne zahteve za hidravlično podporje - 1. del: Deli podporja in splošne zahteve
Ta standard določa varnostne zahteve za dele podporja, ko se uporabljajo po navodilih proizvajalca ali pooblaščenega predstavnika. Primeri delov podporja so podporna ogrodja, podložna podporja, zaščitna podporja, ogrodja v parih in potisno-vlečni podporni sistemi, vključno s komponentami pripomočkov za pomikanje in sidranje, ki omogočajo podporne funkcije. Ta del standarda izključuje pritrdilne elemente na jermenih, opremo za pridobivanje premoga, dele hidravličnih stojk in potisnih cilindrov, ventile, hidravlične in elektrohidravlične krmilne enote, opremo za osvetljavo in signalizacijo ter drugo pomožno opremo. Ta standard velja za dele podporja, ki se uporabljajo pri temperaturi med -10° C in 60° C. Ta standard velja tudi za podporne komponente in podporne dodatke, ki so na voljo, kadar je del podporja opremljen z opremo za nakladanje. Ta standard ugotavlja in upošteva: - morebitne nevarnosti, ki jih lahko povzroči delovanje delov podporja; - področja in pogoje delovanja, ki lahko povzročijo takšne nevarnosti; - nevarne razmere, ki lahko povzročijo škodo ali škodujejo zdravju. Ta standard opisuje metode za zmanjševanje takšnih nevarnosti. Seznam zajetih nevarnosti je naveden v Klavzuli 4. Ta evropski standard ne vzpostavlja dodatnih zahtev za: - posebej korozivna okolja; - nevarnosti, ki se pojavljajo med konstrukcijo, prevozom, izločitvijo iz uporabe; - potres. Ta standard velja za vse dele podporja, ki so prvič dani v promet in so narejeni po datumu izdaje tega standarda.
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Maschinen für den Bergbau unter Tage - Sicherheitsanforderungen für hydraulischen Schreitausbau - Teil 1: Ausbaugestelle und allgemeine AnforderungenMachines pour mines souterraines - Exigences de sécurité relatives aux soutènements marchants applicables aux piles - Partie 1: Unités de soutènement et exigences généralesMachines for underground mines - Safety requirements for hydraulic powered roof supports - Part 1: Support units and general requirements73.100.10Oprema za gradnjo predorov in podzemnih železnicTunnelling and tubbing equipmentICS:Ta slovenski standard je istoveten z:EN 1804-1:2001+A1:2010SIST EN 1804-1:2002+A1:2010en,fr,de01-marec-2010SIST EN 1804-1:2002+A1:2010SLOVENSKI
STANDARD
SIST EN 1804-1:2002+A1:2010
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1804-1:2001+A1
January 2010 ICS 73.100.10 Supersedes EN 1804-1:2001English Version
Machines for underground mines - Safety requirements for hydraulic powered roof supports - Part 1: Support units and general requirements
Machines pour mines souterraines - Exigences de sécurité relatives aux soutènements marchants applicables aux piles - Partie 1: Unités de soutènement et exigences générales
Maschinen für den Bergbau unter Tage - Sicherheitsanforderungen für hydraulischen Schreitausbau - Teil 1: Ausbaugestelle und allgemeine Anforderungen This European Standard was approved by CEN on 21 September 2001 and includes Amendment 1 approved by CEN on 21 December 2009.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards 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 translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, 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 STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1804-1:2001+A1:2010: ESIST EN 1804-1:2002+A1:2010
EN 1804-1:2001+A1:2010 (E) 2 Contents Page Foreword .3Introduction .41Scope .42Normative references .53Terms and definitions .64List of hazards .75Safety requirements .86Verification of the safety requirements . 137User information . 14Annex A (normative)
Tests for verification of the safety requirements and calculation . 19Annex ZA (informative) !!!!Relationship between this European Standard and the Essential
Requirements of EU Directive 2006/42/EC"""" . 37Bibliography . 38 SIST EN 1804-1:2002+A1:2010
EN 1804-1:2001+A1:2010 (E) 3 Foreword This document (EN 1804-1:2001+A1:2010) has been prepared by Technical Committee CEN/TC 196 "Machines for underground mines - Safety", 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 July 2010, and conflicting national standards shall be withdrawn at the latest by July 2010. 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 includes Amendment 1, approved by CEN on 2009-12-21. This document supersedes EN 1804-1:2001. The start and finish of text introduced or altered by amendment is indicated in the text by tags ! ". !This European Standard 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 Annex ZA, which is an integral part of this document." This standard is Part 1 of a European Standard specifying the safety requirements for hydraulic powered roof supports. Other parts are: Part 2: Power set legs and rams Part 3: Hydraulic control systems Part 41): Electro-hydraulic control systems Annex A is normative. This standard includes a Bibliography. 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
1) in preparation SIST EN 1804-1:2002+A1:2010
EN 1804-1:2001+A1:2010 (E) 4 Introduction This European Standard is a Type C-standard as stated in EN 1070. The extent to which hazards are covered is indicated in the scope of the standard.
While producing (or when compiling) this standard it was assumed that: only trained and competent persons operate the machine; components without specific requirements are: a) designed in accordance with the usual engineering practice and calculation codes; b) of sound mechanical construction; c) free of defects. components are kept in good working order; a negotiation took place between the user and the manufacturer concerning the use of the machinery. 1 Scope This standard specifies the safety requirements for support units when used as specified by the manufacturer or his authorised representative. Examples of support units are frame supports, chock supports, shield supports, paired frames and push-pull support systems including the components of advancing and anchoring devices which provide support functions. This part of the standard excludes fixing elements on the conveyor, coal-winning equipment, power set legs and rams, valves, hydraulic and electro-hydraulic control units, lighting and signalling facilities and other ancillary equipment. NOTE Some components are dealt with in other parts of this standard. This standard applies to support units used at temperatures from -10° C to 60° C. This standard also applies to support components and support accessories which are provided if the support unit is fitted with stowing equipment. This standard identifies and takes account of: Possible hazards which may be caused by the operation of support units; Areas and operating conditions which may create such hazards; Hazardous situations which may cause injury or may be damaging to health; This standard describes methods for the reduction of these hazards. A list of hazards covered appears in clause 4. This European standard does not establish the additional requirements for: Specially corrosive environments; SIST EN 1804-1:2002+A1:2010
EN 1804-1:2001+A1:2010 (E) 5 Hazards occurring during construction, transportation, decommissioning; Earthquake. This standard is applicable to all support units placed on the market for the first time, which are manufactured after the date on which this standard was published. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text, and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 287-1, Approval testing of welders - Fusion welding – Part 1: Steels EN 288-1, Specification and approval of welding procedures for metallic materials – Part 1: General rules for fusion welding EN 288-2, Specification and approval of welding procedures for metallic materials – Part 2: Welding procedure specification for arc welding EN 288-3, Specification and approval of welding procedures for metallic materials – Part 3: Welding procedure tests for the arc welding of steels EN 292-1:1991, Safety of machinery - Basic concepts - General principles for design – Part 1: Basic terminology, methodology EN 292-2:1991+A1:1995, Safety of machinery - Basic concepts - General principles for design – Part 2: Technical principles and specification EN 1050:1996, Safety of machinery – Principles for risk assessment EN 1070, Safety of machinery – Terminology EN 1804-2, Machines for underground mines - Safety requirements for hydraulic powered roof supports – Part 2: Power set legs and rams !EN 1804-3", Machines for underground mines - Safety requirements for hydraulic powered roof supports – Part 3: Hydraulic control systems ENV 1993-1-1:1992, Eurocode 2: Design of steel structures - General rules and rules for buildings - General rules and rules for buildings EN 10002-1, Metallic material - Tensile testing – Part 1: Method of test EN 10025:1990 + A1:1993, Hot rolled products of non-alloy structural steels - Technical delivery conditions EN 10045-1, Metallic materials - Charpy impact test – Part 1: test method prEN 13463-1:1999, Non-electrical equipment for potentially explosive atmospheres – Part 1: Basic methodology and requirements EURONORM 103:1971, Microscopic determination of the ferrite or austenitic grain size of steels
SIST EN 1804-1:2002+A1:2010
EN 1804-1:2001+A1:2010 (E) 6 3 Terms and definitions For the purposes of this standard the following terms and definitions apply.
3.1
designs of hydraulic powered roof support 3.1.1
support unit type of hydraulic powered roof support, e.g. frame support, chock support, shield support, consisting of support components and support accessories 3.1.2
frame support support unit in which the canopy and the base are connected to legs arranged in a line one behind the other to form one support unit 3.1.3 chock support support unit in which the canopy and the base are connected to legs arranged one behind the other and side by side to form one support unit 3.1.4 shield support support unit in which the canopy and the base are connected additionally via a goaf shield which lies within the flow of the support bearing force 3.1.5
paired frame at least two support units arranged side by side moving lengthwise against each other using an advancing mechanism 3.1.6
push-pull support at least two support units arranged one behind the other moving lengthwise against each other using an advancing mechanism 3.2
support components all components which lie within the flow of the support bearing force 3.2.1
canopy single or composite support component which transfers the support bearing force to the roof 3.2.2
base single or composite support component which transfers the support bearing force to the floor 3.2.3
goaf shield support component intended to absorb and transfer, fully or partially, the support bearing force and forces parallel to the seam between canopy and base. It is connected to the canopy and base either directly or through a linkage. It generally shields the face area from the waste and is therefore subjected to a load from the caved material 3.3
support accessories SIST EN 1804-1:2002+A1:2010
EN 1804-1:2001+A1:2010 (E) 7 all components which do not lie within the flow of the support bearing force but which are necessary for the functioning of the powered roof support 3.3.1
advancing mechanism device attached to the support unit for moving the support forwards 3.3.2
sprag device attached to the support unit for supporting the working face 3.3.3
forepoling device device used to protect the face area from caving materials 3.4
anchoring device device for preventing uncontrolled movements of the conveying and extracting machines 3.5
forces 3.5.1
yield force force produced by an actuator at the yield pressure of the pressure limitation valve, neglecting friction 3.5.2
rated force maximum force for which the support unit or support component is designed. It is a calculated value which is determined from the support geometry neglecting friction 3.5.3
support bearing force force borne by a support unit normal to the strata, which is a function of the support height and which occurs at the yield force 3.5.4
test force measured force required to be applied to the support unit or support component to ensure that it is subjected to the rated force 3.5.5
additional force force acting on the support unit, not produced by the strata or the support components 4 List of hazards All the items in the following list of hazards refer to continuous operation and to installation and maintenance. This list contains the hazards and hazardous situations, as far as they are dealt with in this European Standard, identified by risk assessment significant for this type of machinery and which require action to eliminate or reduce risk.
SIST EN 1804-1:2002+A1:2010
EN 1804-1:2001+A1:2010 (E) 8 Table 1 — List of hazards with cross references to safety requirements
No. EN 1050:1996 Safety requirements (clause) Hazards
1 1.1; 1.2; 1.3 5.1.1 Crushing, shearing and cutting 2 1.9 5.1.3 fluid injection 3 17 5.4.1 Ejected parts 4 1e 5.1.6; 5.1.7; 5.3.1; 5.3.2; 5.3.4; 5.3.5; 5.3.6; 5.3.7;5.4.1;5.4.3; 5.5; 5.6; 5.7 Fatigue or overload 5 19; 21.1 5.1.1 Slipping, stumbling and falling in the support 6 2.4 5.4.3 Electrical energy resulting from electrostatic processes 7 7.1 5.1.2 Inhaling harmful dusts 8 7.2 5.4.2 Fire or explosion 9 8.1; 8.2 5.1.1 Neglecting ergonomic principles leading to unhealthy postures or excessive strain 10
5.1.8 Incorrect assembly 11 18; 30.1 5.2.1; 5.2.2; 5.3.7 Tipping over, unexpected loss of stability12
5.1.4 Absence or incorrect installation of safety (protective) devices 13
5.1.5 Absence or incorrect installation or important devices and auxiliaries for erection and repair 14 1.C 5.1.5; 5.1.7; 5.1.8; 5.2.1 Potential energy of support unit parts which may move under the effect of gravity
5 Safety requirements 5.1 General requirements Hydraulic powered roof supports, which are designed according to this part of EN 1804, shall also meet the requirements of the other parts of EN 1804. Support units should comply as appropriate with EN 292-1:1991 and EN 292-2:1991 + A1:1995 for hazards which are not covered by this standard. 5.1.1 Access The travel-way through the support unit shall have minimum dimensions of 0,6 m in width and 0,4 m in height with corner profiles of minimum dimensions as given in Figure 1. The walkways shall be designed to minimise slipping hazards e.g. by the use of ribbed plates. SIST EN 1804-1:2002+A1:2010
EN 1804-1:2001+A1:2010 (E) 9
Dimensions in millimetres
Figure 1 — Minimum travel way
5.1.2 Protection against dust Provision shall be made in the design of support units for the installation of dust suppression equipment. That needs to be in accordance with the user’s requirements (see clause 0, last indent). NOTE Support units should be designed to seal the travel way from ingress of dust from the roof and goaf as far as possible. 5.1.3 Protection against ejected fluids Support units shall be so designed that no hydraulic elements are damaged when used as intended. 5.1.4 Protection against face material spalling Support units having a maximum extended height of 2,5 m or more shall be fitted with devices to which sprags can be attached. The sprags shall be positively lockable when in the retracted position. 5.1.5 Lifting and pulling points Support units shall have lifting and pulling points. Lifting and pulling points shall be suitable for their intended purpose. They shall be designed to have a calculated minimum factor of safety of 4 on ultimate breaking load in relation to their intended load carrying capacity. They shall be clearly and permanently marked with their load carrying capacity, e.g. by welding. 5.1.6 Forepoling devices Forepoling devices shall not lead to damage to other parts of the support unit when loaded with the rated force. 5.1.7 Prop anchorages Canopies of hydraulic powered roof supports shall be equipped with anchorages for the top plates of the individual hydraulic props. SIST EN 1804-1:2002+A1:2010
EN 1804-1:2001+A1:2010 (E) 10 5.1.8 Correct assembly It shall be possible to assemble the support unit correctly in accordance with the assembly instructions provided by the manufacturer. 5.2 Stability and alignment requirements 5.2.1 Tilt-resistance When handled in accordance with the manufacturer's instructions support units in a freestanding state shall be stable over their whole adjustment range on all sides on a gradient of up to 15°.
In addition, they shall be stable in operation e.g. with external stabilising means. 5.2.2 Alignment With support units for use in inclined seams with gradients of more than 30°, the alignment force (push or pull) of a support unit which is set shall be greater than the lateral weight component of three adjacent support units which are not set if these support units are no longer stable in the free-standing state. 5.3 Design requirements 5.3.1 Yield capability Support units shall be designed for yielding to absorb convergence between the roof and the floor. During convergence the rated force shall not be exceeded by more than 20 %. NOTE Support units should be designed in such a way that their function is impaired as little as possible by caved waste when lowering. 5.3.2 Behaviour when overloaded Support components including face sprags shall be designed so that no failure occurs by bending, tension and compression when they are loaded up to 1,2 times the yield force of their respective actuators. 5.3.3 Eccentric loading Support units shall be designed in such a way that their ability to function is not impaired in the presence of eccentric loading e.g. if the canopy is in contact with the roof on one side only. 5.3.4 Loading resulting from caving or stowing Support units shall be capable of withstanding the caving or stowing forces resulting from over tipping when operated on a gradient when working an over tipped face. The forces and the gradients to be expected are normally be provided by the user (see clause 0 last indent). 5.3.5 Horizontal loading Support units shall be designed to accommodate horizontal loads.
Shield supports shall withstand a horizontal force corresponding to 0,3 times the support bearing force without any damage to the support components. All other support units shall either withstand the forces induced by the advancing mechanism or allow relative movement between canopy and base: SIST EN 1804-1:2002+A1:2010
EN 1804-1:2001+A1:2010 (E) 11 a) towards the waste, of at least 80 mm per metre of supported height and b) in the coal face direction and to both sides, of at least 40 mm per metre of support height. 5.3.6 Operational performance The operational performance of the support unit shall remain unimpaired when subjected to a total of at least 26 000 load cycles with various load configurations (see A.1.3). 5.3.7 Force introduction points of legs and rams The force introduction points of actuators shall be capable of withstanding 1,5 times the maximum tensile force and the compression force which can be generated by the support hydraulics without their function being adversely affected. 5.4 Materials 5.4.1 Steel 5.4.1.1 General The manufacturer shall specify the steel grades and characteristics to be used. The tensile strength of the steel grades used shall be at least 1,08 times the measured yield point or 0,2 % proof stress if the calculated stresses are more than 90 % of the permissible stresses (see 5.5). The elongation prior to fracture A of the steel grades used shall not be less than 10 %, with the exception of steel grades used for pins where the elongation shall not be less than 9 %. For thermal cutting of the steels, the steel manufacturer's processing specifications shall be observed. 5.4.1.2 Steel for welded support components The steels shall be fully killed and either a) conform to EN 10025:1990 + A1:1993, De-oxidation type FF or b)
1) be of grain size 6 or finer as described in EURONORM 103:1971; and 2) shall have the following minimum impact values at a temperature of –20 °C : 20 J for steels with a 0,2 % proof stress of < 620 N/mm² 25 J for steels with a 0,2 % proof stress of > 620 N/mm² The values given shall be obtained regardless of the sample position, transverse or longitudinal to the direction of rolling. The steels shall be weld able. 5.4.1.3 Steel for non-welded support components The steels shall be killed. SIST EN 1804-1:2002+A1:2010
EN 1804-1:2001+A1:2010 (E) 12 The impact values of the steel grades shall be at least 25 J at room temperature (20 °C). 5.4.2 Light metal Surfaces consisting of light metal or light metal alloys (including paints and coatings containing light metal) of actuators intended by the manufacturer to be used in potentially gaseous mines shall meet the requirements of clause 8 of prEN 13463-1:1999. 5.4.3 Other materials Other materials shall conform to the material specification laid down by the support unit manufacturer. When such materials are used for the manufacture of support components, equivalent performance characteristics to those specified for steel in 5.4.1 shall be proven. Non-metallic materials shall meet the requirements of clause 7 of prEN13463-1:1999. 5.5 Permissible stresses 5.5.1 General Static load calculations shall be carried out for all support components.
Additional forces which stress a support component shall be taken into account. The stresses in the support components determined by calculation either shall not exceed the permissible stresses given in 5.5.2 to 5.5.5 or the manufacturer shall demonstrate by theoretical or experimental methods that the support component performs in a safe manner. 5.5.2 Calculated axial stresses For canopies, bases and footplates the calculated axial stresses shall not exceed the guaranteed minimum yield point or 0,2 % proof stress values of the materials. For other support components, the calculated axial stresses shall not exceed 85 % of these values. 5.5.3 Calculated shear stresses The calculated shear stresses shall not exceed 80 % of the calculated axial stresses allowed for each support unit and load case. 5.5.4 Calculated combined stresses The calculated combined stresses shall not exceed the guaranteed minimum yield points or 0,2 % proof stress of the materials. 5.5.5 Calculated weld stresses The calculated weld stresses shall not exceed the following values of the permitted stresses of the adjacent materials. The welded joints and combined stresses shall be calculated in accordance with ENV 1993-1-1:1992 or an equivalent method.
SIST EN 1804-1:2002+A1:2010
EN 1804-1:2001+A1:2010 (E) 13 Table 2 — Weld stresses
Weld type
axial stresses Shear stresses Combined stresses Fillet welds 65 % 65 % 100 % Butt welds 100 % 65 % 100 %
5.6 Articulated joints Articulated joints which lie in the flow of the support bearing force shall be designed so that the permissible stresses as specified in 5.5 are not exceeded when subjected to: a) central loading at 1,5 times the rated force; b) horizontal loading at the rated force (see Figure A.6); c) eccentric and central loading when combined at the rated force (see Figures A.1, A.2 and A.5). 5.7 Welding All welding shall be carried out in accordance with EN 288-1, EN 288-2 and EN 288-3. The manufacturer shall make use of competent welding shops and welders. This can be reached by either:
a) operating a certified quality system according to EN ISO 9001; or b) a certificate issued by an accredited body confirming compliance with EN 729-3. The welding shall be done by competent welders approved in accordance with EN 287-1. 6 Verification of the safety requirements 6.1 Type testing One specimen of the support unit shall be type tested in accordance with Annex A. The test requirements given in Annex A shall be met. The following documents shall be made available to the laboratory running the type test: User information; Results of a static calculation in accordance with A.8; Manufacturing drawings; Welding drawings; Data relating to the material characteristics; Evidence of the competence of the welding workshop. NOTE The specimen which has been tested according to Annex A should not be placed on the market. SIST EN 1804-1:2002+A1:2010
EN 1804-1:2001+A1:2010 (E) 14 If no provision has been made in Annex A for verification of the requirements in clause 5 by specified tests, they shall be verified by means of visual inspection, function test or reference to documents. Verification of the safety requirements is shown in Table 3. Table 3 — Tests for verification of the safety requirements Safety requirements Verification 5.1.1 *Measurements 5.1.2 *Visual inspection/comparison with the manufacturers drawing 5.1.3 *See A.6 5.1.4 *Visual inspection/comparison with the manufacturers drawing 5.1.5 *See A.4 5.1.6 *See A.5 5.1.7 *Visual inspection of manufacturer’s test documentation 5.1.8 *Visual inspection/comparison with the manufacturers assembly drawings 5.2.1
*Function tests or calculation 5.2.2 *See A.3 5.3.1 *See A.1.1 and A.1.2.4 5.3.2 *See A.1.1, A.1.2.1 and A.1.2.2 5.3.3 *See A.1.1 and A.1.3.4 5.3.4 *See A.2 5.3.5 *See A.1.1, A.1.2.5 and A.1.3.5 5.3.6 *See A.1.1 and A.1.3 5.3.7 *See A.1.1 and A.1.2.3 5.4.1 **See A.7 5.4.2 **Visual inspection of manufacturers material specification and see A.7.1 5.4.3 **Visual inspection of manufacturers material specification and see A.7.1 5.5 *See A.8 5.6 *See A.8 5.7 **Visual inspection of accredited body certificate *type test; **series test
6.2 Series verification See Table 3, clauses signed with ** 7 User information 7.1 General requirements The hydraulic powered roof support manufacturer shall provide user information meeting the requirements of clause 5 of EN 292-2:1991 + A1:1995 and clause 7.
SIST EN 1804-1:2002+A1:2010
EN 1804-1:2001+A1:2010 (E) 15 The user information shall be the primary source of information on a complete hydraulic powered roof support and shall contain all the information relating to its safe application and this shall be produced as an instruction handbook as specified in 5.5 of EN 292-2:1991 + A1:1995. Care shall be taken to ensure that the user information is available to the user on receipt of the hydraulic powered roof support. The content and structure of the user information shall comply with 5.1.3 of EN 292-2:1991 + A1:1995. 7.2 Technical and application data 7.2.1 Introduction The user information shall describe the intended use of the hydraulic powered roof support. The operating instruction shall include all design and performance data necessary for the user to make an assessment of suitability for use in particular applications and environments, and for the identification of any energy supply requirements and other ancillary facilities that may be needed. The information provided shall comply with 7.2.2 to 7.2.4. 7.2.2 General description This description shall explain in clear, easily understandable language of the user and in logical sequence the overall function of the hydraulic powered roof support with all special features, characteristics and markings. General arrangement drawings and function block diagrams shall be provided as appropriate. 7.2.3 Performance data The principal dimensions, weights, centres of gravity and performance capabilities of the complete support unit and, where applicable, of its main component parts shall be given. In particular, information shall be provided on: a) performance capability (e.g. support bearing force and height adjustment range); b) working conditions and limitations (e.g. by giving details of minimum and maximum effective seam thickness, minimum and maximum seam pitch in the direction of and at right angles to the advancing mechanism, mini
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