Expertise In Explosion Protection - STAHL CraneSystems
10.2020Expertise in explosion protection
STAHL CraneSystems – The ExpertsATEXIECExOver 140 years of tradition, over 140 years of practical approach, competenceand experience: STAHL CraneSystems can look back on a history character ised by the constant drive for innovation and significant modernisations.At the end of the nineteen-twenties, STAHL CraneSystems was one of the first,and for some time the only manufacturer to influence and advance thedevelopment of explosion-protected lifting technology. Revolutionary andprogrammatic in many fields, always receptive to new aspects, we haveamassed a wealth of experience that gives us distinct advantages today.Profit from these advantages, from the expertise of one of the world’s leadingmanufacturers of explosion-protected components and systems for overheadtransportation. Technically and economically, our products not only belongto the top flight internationally but lead the way in the field of explosionprotection.AS range of wire rope hoistsFirst electrichoist with wirerope and drumConstruction ofexplosion-protectedcrane systems up toa lifting capacityof 100,000 kg for thechemical industry192219351978First largeelectric portal crane18761898Company foundedby Rafael Stahl1926Development ofexplo sion-protectedhoists, crane compo nents and controltechnology begins1953One of the largest and mostcomprehensive portfolios ofexplosion-proof hoist andcrane technology in the worldT range of chain hoistsSH range of wire rope hoists1983World innovation:first explosionprotected flameproofenclosed electricwire rope hoist19971998ST range ofchain hoists20032009ATEX product directive 2014/34/EUimplemented in the whole productprogramme without exception2010As explosion protectionexpert, STAHLCraneSystems offersexplosion-protectedcustomised solutionsand crane technologyfor the gas liquefactionindustry (LNG).
Information and standards0406081012Explosion protectionLegal principlesPhysical and technical principlesDuties and obligationsof users in EuropeExpertise in explosion protectionProducts and services1416Full IECEx-certification of the portfoliofor Zone 1, Zone 2, Zone 21 and Zone 221820112014201820222426STAHL CraneSystemsis in the process ofbeing granted theBrasilian INMETROcertification forZone 1 and Zone 21.Extension of CSA approvals held since2003 to include country approval forNorth America according to US NECThe danger pointsExplosion-protectedwire rope hoistsExplosion-protected chain hoistsComponents and electricsThe engineeringThe supportOn the spot and in actionall around the world
4I5Expertise in explosion protection – Informationproducts andandservicesstandardsExplosion protectiondeveloped in explosion protectionThe beginnings of explosion protectionacross the world. As the physicalare to be found in the mininglaws regarding the occurrence ofindustry where miners are exposedexplosions and the measures takento the dangers of fire damp. Thisto prevent them are based on similarterm refers to methane gas whichprinciples everywhere, currentlyescapes in coal mines in particularthe aim is to harmonise approvaland which reacts explosively whenconditions and regulations regar dcombined with fine coal dust and airing conformity at an international(fire damp explosion). Explosivelevel. This brochure merely outlinesatmospheres may however occur inthe European explosion protectionother branches of industry too,directives which however corres for example in the chemical orpond largely to the internationalpetrochemical industries. ElectricalIECEx regulations. It cannot takeapparatus used in potentiallythe place of an intensive analysis ofexplosive atmospheres must benational legal principles andconstructed in such a way that itstandards.does not become a source ofSTAHL CraneSystems is pioneering,ignition.dynamic and uncompromising whenIn order to avoid serious injuries andthe safety of persons and machinesdamage to material and the environ- in areas subject to explosionment, safety regulations, laws,hazards is at stake. STAHL Cranedecrees and standards have beenSystems occupies an exceptionalestablished in most states. In thisposition in this field with our manyway a high degree of safety hasdecades of experience and expertise,our own fundamental researchChemical industryPetrochemical industryand development, approvals fromthe Federal Physico-TechnicalInstitute (PTB) and other nationaland international test institutes andworldwide certification. All hoistsand components stem from ourown production. The distinguishinghallmarks of our products are thehigh level of in-house productionand integrated quality management.STAHL CraneSystems is the worldspecialist for explosion protectionand as one of the world marketleaders offers the most compre hensive and complete range ofexplosion-proof lifting, drive andcontrol technology.
Food processing industryShipbuilding and offshore industryPharmaceutical industryEnergy supply
6I7Expertise in explosion protection – Informationproducts andandservicesstandardsLegal principlesATEXIECExATEXWith the ATEX product directive2014/34/EU (ATEX 95) and the ATEXuser directive 1999/92/EC (ATEX 137)the European Community hasestablished the basis for uniformEuropean explosion protection.This safety concept is applicableboth for manufacturing electricaland non-electrical apparatusand for operating this apparatus inthe respective industrial plants.The legislators of the individualmember countries implement thesedirectives in equivalent statutoryregulations.In Germany for example these arethe Explosion Protection OrdinanceExVO (implementation of directive2014/34/EU), the Industrial SafetyOrdinance (implementation ofdirective 1999/92/EC) and theTechnical Regulations for IndustrialSafety (TRBS), the regulationsissued by the Employers’ LiabilityInsurance Associations (e.g. BGR104, BGR 109 and BGR 132), theEmployers’ Liability InsuranceAssociation information sheets (e.g.BGI 740) and the regulations issuedby the VDI (Association of GermanEngineers) (e.g. 2263 and 3673).ATEX directive 2014/34/EU defines theproperties required by apparatusfor safe use in explosive areas.This includes classification intoequipment groups and categories,the respective conformity assess ment procedures to be followed,manufacturers’ responsibilityincluding EU conformity marking,basic safety requirements for thedevelopment and manufacture ofexplosion-protected equipmentand recognised quality managementmeasures to be implemented duringproduction. ATEX directive 99/92/ECdefines the obligations of users andemployers for employees’ protectionin explosive areas. Inter alia, theuser must assess risk and classifythe potentially explosive areasinto corresponding zones so thatthe apparatus required by directive2014/34/EU can be used in safety.Assessment of conformity in compliance with ATEX 95Category 1and M1EU-typeexamination (III)Conformity to type based on quality assurance of theproduction process (IV)Conformity to type based on product verification (V)Individual verification (IX)Excerpt from ATEX directivesCategory 2and M2Conformity to type based on productquality gineEU-typeexamination(III)Other apparatusIn-house production testing (VIII) anddocumentation at notified bodyConformity to type based on internalproduction control plus supervisedproduct testing (VI)Individual verification (IX)Category 3In-house production testing (VIII)Individual verification (IX)The figures in brackets refer to the modules of directive 2014/34/EU which define theprocedures to be followed for meeting conformity.
IECExThe international IECEx schemealso aims to assess conformity andcertify apparatus, systems andservices for use in explosive areas.The IECEx system, introduced in1996, supports the standardisationof norms and the issuing ofcerti fi cates of conformity (CoC)unrelated to specific countries orregions, in order to thus simplify thefree global movement of goods.There is already extensive agree ment as to classes and require ments between the European ATEXdirectives and the IECEx regulations.This means that ATEX could one daybe superseded.IECEx is of great importance outsideEurope. A total of 26 countries haveacceded to IECEx and there are34 recognised IECEx certificationbodies (ExCB) and 36 recognisedtest laboratories (ExTLs) aroundthe world. In countries whichrecognise IECEx, apparatus withthe corres ponding certificationcan be commis sioned withoutfurther testing.All products of STAHL CraneSystemsare available also with IECExcertification. You will find furtherinformation on the IECEx system andits provisions including regulations,handbooks and procedures at:www.iecex.comATEX ds/harmonised-standardsExplosion Protection Ordinance 11th GPSGV) www.gesetze-im-internet.de/bundesrecht/gsgv 11 2016 (German)Technical Regulations for Industrial Safety(TRBS) www.baua.de/enIndustrial Safety Ordinance (BetrSichV) www.gesetze-im-internet.de/betrsichv 2015 (German)Regulations and information sheets of Employers’Liability Insurance Associations www.bghm.de (German)VDI regulations www.vdi.eu/engineering/vdi-standardsInternational Electrotechnical CommissionSystem for Certification to StandardsRelating to Equipment for usein Explosive Atmospheres (IECEx) www.iecex.comInternational testing authoritiesExplosion InspectionauthorityAgencyUseful links
8I9Expertise in explosion protection – Informationproducts andandservicesstandardsPhysical and technical principlesAn explosion is a precipitate chemicalreaction of combustible matter withoxygen setting free high energy.In this connection, combustiblematter may be gases, mists, vapoursor dusts. An explosion can only takeplace if three factors come together:combustible matter (in suitabledispersion and concentration),oxygen (in the air) and a source ofignition (e.g. an electric spark).It is thus necessary to prevent ignitionor reduce the effect of an explosionto an innocuous level. To ensurethis, apparatus which is used inpotentially explosive atmospheresmust be designed, manufacturedand of course marked in compliancewith the relevant regulations (ATEXproduct directive 2014/34/EU, IECExregulations, etc.). Classification ofdevices into groups and categoriesaccording to ATEX productdirectives or in EPL according toIECEx standards results from theirarea of use or the safety level ofprotective measures and thefrequency of occurrence of anexplosive atmosphere. The highestpossible risk potential must be takeninto account when carrying out thisclassification. Only explosionprotected apparatus may be usedin areas in which explosiveatmospheres may occur in spiteof all preventive measures. Thisapparatus is produced in varioustypes of protection in accordancewith the corresponding constructionregulations (series of standardsIEC/EN 60079 and ISO 80079-36/EN ISO 80079-36).The type of protection applied bythe manufacturer depends on thetype and function of the apparatus.All standardised types of protectionwithin a category are equivalent.In the EU declaration of conformityincluded in the technical documentation the manufacturer confirmsthat the product meets the ATEXdirectives.IEC 60079/EN 60079 for the use of electrical equipment in areas exposed to gas/dust explosion hazardsIEC 60079-0/EN 60079-0 General requirements on design, testing and marking electrical equipment and Ex componentsEx dflameproofenclosureEx ppressurisedapparatusEx qpowderfillingEx ooil immersionEx eincreasedsafetyEx iintrinsicsafetyEx nZone 2equipmentEx mencapsulationEx opopticalradiationEx tprotectionby housingIEC 60079-1EN 60079-1IEC 60079-2EN 60079-2IEC 60079-5EN 60079-5IEC 60079-6EN 60079-6IEC 60079-7EN 60079-7IEC 60079-11EN 60079-11IEC 60079-15EN 60079-15IEC 60079-18EN 60079-18IEC 60079-28EN 60079-28IEC 60079-31EN 60079-31
Zone 2Zone 1Source of ignitionZone0 0ZoneZone 0Combustible matterAir (oxygen)Ex dEx eIndirect cable entry, very high safety level, provided by type of protectionincreased safety ›e‹ and flameproof enclosure ›d‹. Connection of Ex econnection box to Ex d with post-type bushing.ISO 80079-36 / EN ISO 80079-36 for non-electrical equipment in areassubject to gas/dust explosionsEx dflameproofenclosureEx cconstruc tionalsafetyEx bmonitoring sour ces of ignitionEx ppressurisedapparatusEx kliquidimmersionEx tprotection byenclosureIEC 60079-1EN 60079-1ISO 80079-37EN ISO 80079-37ISO 80079-37EN ISO 80079-37IEC 60079-2EN 60079-2ISO 80079-37EN ISO 80079-37IEC 60079-31EN 60079-31
10 I 11Expertise in explosion protection – Informationproducts andandservicesstandardsDuties and obligations of users in EuropeATEX directive 1999/92/EC definesusers’ obligations for the protectionof employees working in potentiallyexplosive atmospheres. The user isobliged to establish technical andorganisational measures to preventexplosions occurring. In this respecthe must for example assess thepotential danger and explosion risk,ensure that the working environ ment has been designed for safetyand classify the hazardous areasinto zones in accordance with thedirectives for safe operation of theapparatus which has been classi fied into categories. In addition he isobliged to issue and maintain anexplosion protection document.Naturally further issues are defined indirective 1999/92/EC in order toimplement explosion protectioneffectively. After a system has beencommissioned in due form it mustbe monitored and maintained so thatthe safe condition of the systemis ensured and all dangers can beexcluded. The plant’s expert hasproduct-specific documents(rating plate, operating instructions,EC prototype test certificate,declaration of conformity, etc.)and universally valid documents(legal ordinances, industrial safetyordinance, technical regulationsTRBS, norms and standards, etc.)Zone plan of a paint shopZone 0Zone 1Zone 2at his disposal. The full productspecific documentation must bemanaged and retained throughoutthe period of use of the apparatusand placed at the disposal of theexperts entrusted with maintenancework.
Integrated explosion protectionPrimary explosion protectionPreventing the formation ofhazardous explosive atmospheresRisk diagramSecondary explosion protectionPreventing the ignition ofhazardous explosive atmospheresModification of equipment,working material, the workenvironment or the personnelusing the equipmentNew equipmentAscertain risksAssess risksTertiary explosion protectionAre safety andhealth protection ofthe employees ensured Ywithout additionalmeasures beingtaken?Restricting the effects ofan explosion to an innocuous levelNDefine actions (e.g. tests)Implement actionsCheck effectiveness of actionsNAre theactions sufficientlyeffective and are nonew risks likelyto occur?YDocument results
12 I 13Expertise in explosion protection – Informationproducts andandservicesstandardsExpertise in explosion protectionAs one of the leading manufacturersof explosion-proof lifting and cranetechnology, STAHL CraneSystemsoffers a broad and complete port folio of products as well as com pre hensive services in this field.Explosion-pro tected products fromSTAHL Crane Systems meet not onlyGerman national laws and EuropeanATEX directives but also interna tional standards and laws for theAmerican and Asian market. Forexample, all products are certifiedboth to ATEX and IECEx.Example ofdevice markingOur product types are certified afterpassing an EC prototype test andundergo the conformity assessmentprocedure specified in the direc tives. Development and manufactureof the series products are subjectto our strict quality managementmonitored by independent Europeaninspection authorities. The testcertificates from the notified Euro pean inspec tion authorities arerecog nised throughout the EU.The rating plates indicate in additionto the usual data (manufacturer,type, serial number, electrical data)the data relevant to explosionprotection. CE marking of theproducts, declaration of conformityin writing and detailed operatinginstructions and documentationconfirm that all valid EU directivesapplicable to the apparatus areobserved.Decades of experience in the field ofexplosion protection, responsible,expert staff and production in accor dance with the latest direc tives andstandards guarantee quality downto the last detail for every piece ofexplosion-protected equipment fromSTAHL CraneSystems.
Specific marking of explosion-protected devices (current marking, examples)ExCEN/CENELEC/IECmbIIBT4Gb(as required)EPL (equipment protection level):G – gasD – dusta – very high safety levelb – high safety levelc – extended safety levelSymbol for explosion protectionTypes of protection: Ignition source monitoring – bConstructional safety – c Flameproof enclosure – d, dbIncreased safety – eb, ec Intrinsic safety – ia, ib, icLiquid immersion – k Encapsulation – ma, mbType of protection ›n‹ – nCc, nRc Oil immersion – obPressurised enclosure – p, pxb, pyb, pzcPowder filling – qb Protection by housing – ta, tb, tcGas group:e. g. propane – IIAe. g. ethylene – IIBe. g. hydrogen – IICDust group:combustible flakes – IIIAnon-conductive dust – IIIBconductive dust – IIICCEATEX (EU directive 2014/34/EU)IIGas: temperature classes –max. surface temperatureT1 – 450 C T3 – 200 C T5 – 100 CT2 – 300 C T4 – 135 C T6 – 85 CDust: specification of max. surfacetemperature in C (as required)2CE markingType of explosiveatmosphere for Group IIExplosion protection symbolG Gases, vapours, mistsZone 0, 1, 2Equipment group: mining – IOther potentially explosive atmospheres – IIEquipment categoryfor Equipment Group II:*GD DustZone 20, 21, 22very high safety level – 1high safety level – 2normal safety level – 3* for Equipment Group I: M1, M2Operating instructions – contentsin accordance with IEC/EN 60079-0CommissioningUseInstallation and dismantlingMaintenanceElectrical installationElectrical parametersParticular conditions
14 I 15Expertise in explosion protection – products and servicesThe danger pointsIn lifting, drive and control technology both electrical and non-electrical compon ents and parts can trigger an explosion. STAHL CraneSystems thereforeoffers apparatus specially designed for use in areas subject to gas or dustexplosion hazard. All hoists and crane components without exception are fromour own production, from motor and brake to controls and switchgear,and meet the latest European (ATEX) and international (IECEx) constructionand safety regulations for potentially explosive atmospheres.1 Wheels2 Rope guide/chain guide3 GearThe type of protection of all wheels isconstructional safety ›c‹. If travel speeds arehigh, this also includes brass wheels.The wear-resistant rope guide in nodulargraphite casting GJS (previously designatedGGG) is extremely durable and not subjectto temperature limitations. The same appliesto the chain guide, type of protection used:constructional safety ›c‹.The types of protection of the gear are constructional safety ›c‹ and liquid immersion ›k‹.The protective liquid (oil) prevents sparks.4 Equipotential bonding5 Overload cut-off6 Panel boxEquipotential bonding is essential foravoiding incendive sparks when installingcrane technology in potentially explosiveatmospheres.The overload cut-off operates with a dualchannel load sensor supplying analog signals.Various sensors are used depending onreeving (LCD, LSD).The type of protection for panel boxes forZone 1, 2 and 21 on cranes and hoistscombines types of protection flameproofenclosure ›d‹, increased safety ›e‹ andprotection by housing ›tD‹.
71016547 Cable entry8 MotorsIndirect cable entry, very high safety levelfrom type of protection increased safety ›e‹and flameproof enclosure ›d‹ .Connection of the Ex e connection box to Ex dby post-type bushing.Motors for Zone 1 and 21 are made of greycast iron, the type of protection combinesflameproof enclosure ›d‹, increased safety ›e‹and protection by housing ›tD‹. For Zone 2 themotors are made of aluminium and in type ofprotection non-sparking equipment ›nA‹. ForZone 22 the motors are manufactured in IP 66and protection by housing ›tD‹.9 Control pendant10 Gear limit switch11 Bottom hook blockThe two-step SWH Ex control pendantsin IP 66 protection are used on explosionprotected wire rope hoists for Zone 1.The protection class of the gear limit switchis IP 66. The elements installed are protectedby flameproof enclosure ›d‹, the housing byincreased safety ›e‹.The type of protection employed is construc tional safety ›c‹, no aluminium is used.If travel speeds are high, individual parts, suchas the load hook, are bronze-coated.118293
16 I 17Expertise in explosion protection – products and servicesExplosion-protected wire rope hoistsThe SH Ex and AS 7 Ex explosion-protected wire rope hoists from STAHL Crane Systems meet the European product directive 2014/34/EU (ATEX 95) andthe international IECEx regulations. They are constructed for use in Zone 1 orZone 21, however they can also be used in Zone 2 or Zone 22.These adaptable wire rope hoists are of systematically modular construction anddesigned for a load capacity range of 1,000 kg to 160,000 kg. For the loadcapacity range of 1,000 kg to 25,000 kg the versatile SH Ex series is available infive frame sizes with 15 load capacity brackets. The upper load capacity rangeup to 100,000 kg is covered by the field-proven AS 7 Ex and AS 7 Ex ZW series.The attractive design of STAHL CraneSystems’ wire rope hoists conceals acompact, robust construction which is largely low-maintenance. They areextremely reliable and have a longer-than-average service life. Common to allof them is the particularly smooth precise starting and braking characteristic.The SHW Ex winch programme is available on request for the high-load bracketup to 160,000 kg.The facts Condition monitoring apparatus inexplosion-protected design ensuressafe operationElectronic motor and brakemanagement guarantees a longservice lifeMost comprehensive explosionprotected wire rope hoistprogramme for the load capacityrange from 500 kg to 160,000 kgEquipped as standard with twohoisting and two travelling speedsHigh ISO classification according toFEM/ISO standardsISO classifications according to FEM/ISO standardsLoad capacity [kg]TypeReeving1,0001,2501,600SH 32/1, 4/23m2m2m4/1SH 4SH 52/1, 00010,000 12,500 16,000 20,000 25,000 32,000 40,000 50,0003m2m2m1Am2m1Am2m2m2m1Am4/13m2m2m1Am2/1, 4/23m**2m2m1Am4/1SHR 62/1SH 62/12m4/13m4/14/2AS 72/14/12m2m1Am3m2m1Am2m1Am1Bm*1Am3m3m2m1Am1Bm** for Zone 2, 22 only ** with 2/1 reeving, for Zone 1, 21 only
1 Double girder overhead travelling cranes with explosion-protectedwire rope hoists in twin design and auxiliary hoist provideassistance in the maintenance of compressors in a hydrogenliquefaction plant.2 SH Ex wire rope hoists are available for Zone 1 and Zone 2, and forZone 21 and Zone 22. They reliably meet the technical, norma tiveand practical requirements specified by ATEX and IECEx.12UseCategoryProtection againstExplosion protection classZone 1Ex II 2 GGasEx de eb IIB T4 Gb or Ex de eb IIC T4 GbZone 2Ex II 3 GGasEx de eb nA IIB T3 (T4) Gc or Ex de eb nA IIC T3 (T4) GcZone 21Ex II 2 DDustEx tb IIIC T 120 C DbZone 22Ex II 3 DDustEx tc IIIC T 120 C Dc
18 I 19Expertise in explosion protection – products and servicesExplosion-protected chain hoistsThe ST Ex explosion-protected chain hoists from STAHL CraneSystems meetthe European product directive 2014/34/EU (ATEX 95) and the internationalIECEx regulations. They are specially constructed for use in Zone 1 orZone 21, however they can also be used in Zone 22. The mechanical designis prototype-tested: TÜV10ATEX7642x.This series of chain hoists belongs to the most distinctive and comprehensiveon offer in the world. In use in thousands of applications for decades, moder nised and optimised again and again, this chain hoist is a classic, powerful,reliable and undemanding as regards maintenance and power consumption.The ST Ex series is available in 13 load capacity brackets from 125 kg to6,300 kg. The ST Ex chain hoist is used as stationary hoist with sus pensionhook or eye, rigid attachment or with push or electric trolley and is particu larly suitable for rugged use in industry. The innovative and pioneering designof the chain hoist brings considerable economic advan tages. The extremelyshort headroom available as an option for every type of chain hoist optimisesthe effective hook height. In addition to standard versions, further off-standardversions and customer-specific solutions are available.The factsPatented suspension directly onthe chain guide The most comprehensive explosionprotected chain hoist programmefor the load capacity range from125 kg to 6,300 kg Maximum utilisation of spacethanks to the extremely short andcompact headroom dimensions ISO classification according to FEM/ISO standards ISO classifications according to FEM/ISO standardsLoad capacity for Zone 22 [kg]Load capacity for Zone 1 and 21 [kg]5006302/11Am1Bm1/11AmTypeReeving 250ST 051/1ST 105001,000 1,600 2,000 2,500 3,200 5,0001/12/1ST 302503203m/2m1Am1Bm1,000 1,250 1,600 2,000 2,500 3,200 5,000 6,3001Am2/1ST 201253m3m1Am3m3m2m/1Am2m3m1Am2m/1Am1Bm1/11Bm2/1ST 323m1/12m/1Am2/1ST 501/12/1ST 601/12/12m/1Am2m1Am1Am2m1Am1Am1Bm1Bm
The ST Ex chain hoist for Zone 22 is available insix frame sizes up to a load capacity of 6,300 kg.The ST Ex chain hoistfor Zone 1 and Zone 21is available in twoframe sizes up to a loadcapacity of 5,000 kg.UseCategoryProtection againstExplosion protection classZone 1Ex II 2 GGasEx de eb IIB T4 Gb or Ex de eb IIC T4 GbZone 21Ex II 2 DDustEx tb IIIC T 120 C DbZone 22Ex II 3 DDustEx tc IIIC T 120 C Dc
20 I 21Expertise in explosion protection – products and servicesComponents and electricsBottom hook blockThe components and electrics, which also meet theEuropean product directive 2014/34/EU (ATEX 95) andthe inter national IECEx regulations, are the perfectcomplement to explosion-protected lifting technologyfrom STAHL Crane Systems.The correct functioning and high performance of a cranesystem depend on the quality of all its components.These are developed down to the last detail by STAHLCrane Systems and supplied from our own production.Forward-looking, high-quality modules complementone another in the system and ensure both safetyand cost-effectiveness. Using the modular components,our crane manufacturing partners in your regionare able to adapt the crane system individually tocustomer-specific requirements and wishes. Mature,cost-effective electronics, drive technologyto meet the highest demands, innovative modules andfield-proven, robust standard components are availablefor these adaptations. The expert crane manufacturingpartners and experienced system manufacturers aretrained by STAHL CraneSystems’ explosion protectionexperts so that they are always up to date as regardsthe status of national and international regulations andstate-of-the-art technology.Explosion-protectedendcarriagesFor high and very high travelling speeds the load hook and the solidparts of potential impact surfaces are bronze-coated. In addition,all other exterior surfaces of the bottom hook block can be bronzecoated to prevent sparking.for single girder overhead travelling cranes,7 wheel diameters and 5 wheelbasesfor double girder overhead travelling cranes,7 wheel diameters and 6 wheelbasesfor single girder underhung cranes, 4 wheel diametersand 3 wheelbasesExplosion-protecteddrive technologySupplied as standard with 2-step speeds 20/5 m/min or40/10 m/min, other speeds on requestAs an option, stepless speed controlExplosion-protectedcontrol technologySWH 5 Ex wired control pendantExplosion-protectedelectricsFestoon cables in conjunction with control pendantsor radio remote controlsPanel box in explosion-protected design
Panel boxTravel driveFlameproof enclosure for Zone 1 and Zone 2: the sheet steel or alumi nium housings can be used as individual housings or in combination.All components required such as transformers, contactors, fuses,measuring instruments and tripping devices can be installed in themodular-design housing. Post-type bushings provide the connect ionto the terminal box (in increased safety Ex e).The explosion-protected travel drives Zone 1 and Zone 21 aredesigned for intermittent operation. They have a sliding rotor motorwith conical brake and centrifugal mass for smooth startingand braking characteristics. All motors are pole-changing providingtwo travel speeds. The particularly quiet gear requires littlemaintenance thanks to its long-term oil bath lubrication.Crane endcarriagesControl pendantsCrane systems up to a safe working load of 50,000 kg and a span of30 m can be built with explosion-protected endcarriages forunderhung and overhead travelling cranes. For particular applications, at customers’ request and for increased safety all wheelscan be supplied in brass.The SWH 5 Ex control pendants are designed specifically for controlling hoists and cranes in hazardous areas. Activation is generally2-step and permits a quick changeover from ›fast‹ to ›slow‹ and viceversa. All control pendants are equipped with an EMERGENCY STOPslam button meeting the requirements of IEC/EN 60947-5-5.
22 I 23Expertise in explosion protection – products and servicesThe engineeringEngineering means innovation and individuality. Constantly redefining the liftingand transporting of loads for complex requirements even in explosive areas isa job for our experts. From one of the widest product ranges of standardcomponents they regularly develop modern, individual explosion-protectedcustomised solutions which meet all national and international directivesand laws. The whole portfolio and all customised solutions are available inexplosion-protected designs for Zone 1, Zone 2, Zone 21 and Zone 22.Hardly any other manufacturer of lif
EN 60079-15 Ex m encapsula-tion IEC 60079-18 EN 60079-18 Ex op optical radiation IEC 60079-28 EN 60079-28 Ex t protection by housing IEC 60079-31 EN 60079-31. Zone 1 Zone 2 Zone 0 Zone 0 Zone 0 Combustible matter Air (oxygen) Source of ignition Ex d Ex e Indirect cable entr
A4 Basics of Explosion Protection INTRODUCTION HAZARDOUS LOCATIONS INNOVATIVE EXPLOSION PROTECTION by R. STAHL 1-800-782-4357 TEMPERATURE CLASSES Ignition temperature or auto-ignition temperature (ATI) is the minimum temperature of a surface at which an explosive atmosphere ignites.
NEC explosion protection Class I, Zone 1 AEx e q [ia] IIC T4 Gb CEC gas explosion protection Ex e q [ia] IIC T4 Gb Class I, Division 2 CNEX gas explosion protection Ex e q [ia op is Ga] IIC T4 Gb CNEX dust explosion protection Ex tD [iaD op is] A21 IP65 T110 C KCS explosion protection Ex e q IIC T4 Ex tb IIIC IP64 T110 C Ex ia IIC T4 Ex ia .
DOW'S FIRE & EXPLOSION INDEX HAZARD CLASSIFICATION GUIDE SEVENTH EDITION a AIChE techrzical manual published by the American Institute of Chemical Engineers 345 East 47th Street, New York, NY 10017 0 1994 . C1.jpgFile Size: 788KBPage Count: 9Explore furtherDow Fire and Explosion Index (F&EI) AIChEwww.aiche.orgDOW FIRE AND EXPLOSION INDEX pdfeasystudy.infoDow Fire and Explosion Index (Dow F&EI) and Mond Indexwww.slideshare.netDow's Fire and Explosion Index Hazard Classification Guide .www.wiley.com(PDF) Dow's fire and explosion index: a case-study in the .www.researchgate.netRecommended to you based on what's popular Feedback
10. The 2005 San Francisco Electrical Explosion 28 11. The 2008 Rancho Cordova Explosion 28 12. The 2008 Whiskey Fire 29 13. The 2009 San Francisco Electrical Explosion 29 14. The 2010 San Bruno Explosion 29 15. The 2011 Cupertino Explosion 30 16. The 2014 Carmel Explosion 31 17. The 2015 San Francisco Transformer Explosion 31 18. The 2015 .
Feb 2008 - Georgia sugar refinery explosion - The 2008 Imperial Sugar refinery explosion was an industrial disaster that occurred in Port Wentworth, Georgia. Primary explosion, then secondary explosion. Nov 2010 - Combustible Dust Explosion at Motorcycle Rim Manufactured Fac
Annual School Health Conference Becky Austin-Morris, DNP, PMHNP -BC. Psychiatric & Mental Health Nurse Practitioner. . Stahl's essential psychopharmacology: Prescriber's guide, 5th ed. Citation. Stahl, S. M. (2014). Stahl's essential. psychopharmacology: Prescriber's guide (7th ed.) Vitie
Washer steel/Scheibe stahl TBRUB without chamfer/ohne fase Plain/unbeh Zincpl/verz HDG/feuerverz 9:7 Washer steel/Scheibe stahl TBRSB Big outside diameter/große Außendiachamfered/mit fase Zincpl/verz 9:8 Washer steel/Scheibe stahl TBRSUB without chamfer/ohne fa
E-Mail: biuro@carlstahl.pl Carl Stahl American Lifting, LLC 21825 Doral Road Waukesha, WI 53186, USA Tel.: (001) 262-786-2710 Fax: (001) 262-786-8510 E-Mail: jim@amlift.com Carl Stahl AB Frysvägen 3 S-556 52 Jönköping Tel.: (0046)-(0)36 36 16 40 Fax: (0046)-(0)36 10 09 24 E-Mail: info@ca
