©2006DEHN+SÖHNEInternationalStandards国际标准Detailedprovisionsfortheimplementationoftherequirementsofthelegislatorsarecontainedinanumberofnationalandinternationalstandardlistedasfollows:需求及执行的详细规定包含在下列国家和国际标准中:•EN60079-14;DINVDE0165Teil108/98:„Installationofelectricalequipmentinhazardousareas“;Issue8/1998危险区域电气设备安装•EN60079-17;DINVDE0165Teil10;Issue08/99:„Electricalequipmentforhazardousareas“;Part17-Testingandmaintenance危险区域电气设备安装,第17部分—测试及维护•EN60079-10;DINVDE0165Teil101;Issue09/96:„Electricalequipmentforareaswithgashazard“;Part10-Classificationofhazardousareas危险气体区域电气设备,第10部分—危险区域分级•EN1127-1;Issue08/97:„Potentiallyexplosiveareas-explosionprotection“;Part1:Principlesandmethods潜在的爆炸区域—爆炸防护,第1部分:原则及方法©2006DEHN+SÖHNEWhatshouldwedoincaseoflightningandsurgeprotectioninhazardousareas?危险区域雷击和电涌防护实施过程Assessarisk评估风险riskmanagementinacc.withIEC62305-2风险管理createdokumentationonexplosionprotection建立爆炸防护文档ImplementationofLightningandSurgeprotectionmeasures配置雷击及电涌防护措施©2006DEHN+SÖHNEWhatshouldwedoincaseoflightningandsurgeprotectioninhazardousareas?危险区域雷击和电涌防护实施过程Assessarisk评估风险„LookforSourcesofIgnitions“寻找点火源©2006DEHN+SÖHNESourcesofIngnitionsinacc.withEN1127-1点火源,根据EN1127-1©2006DEHN+SÖHNEOilrefineryPertamina,Cilacap/Java,1995:7tanksburnedoutduetoalightningstrike1995年爪哇岛其拉扎的印度国家石油公司炼油厂:7个油罐由于雷击焚毁©2006DEHN+SÖHNEFloatingRoofTank;tankfireduetolightning浮顶油罐;由于雷击罐体着火TrzebiniaRaffinerie,Poland•Date:06.05.2002•Capacity:10000m³•Damage:4MioEUR©2006DEHN+SÖHNE•Date:06.05.2002•Capacity:10000m³•Damage:4MioEURFloatingRoofTank;tankfireduetolightning浮顶油罐;由于雷击罐体着火TrzebiniaRaffinerie,Poland©2006DEHN+SÖHNE•Date:06.05.2002•Capacity:10000m³•Damage:4MioEURFloatingRoofTank;tankfireduetolightning浮顶油罐;由于雷击罐体着火TrzebiniaRaffinerie,Poland©2006DEHN+SÖHNEFloatingRoofTank;tankfireduetolightning浮顶油罐;由于雷击罐体着火TrzebiniaRaffinerie,Poland©2006DEHN+SÖHNEAvoidanIgnitioninCaseofLightninginhazardousareas危险区域防止雷击点火Ex-Zone0Ex-Zone0Ex-Zone0Ex-Zone0Ex-Zone1,2Ex-Zone1,2Ex-Zone1,2Ex-Zone1,2Ex-Zone1,2Ex-Zone1,2Ex-Zone1,2Ex-Zone1,2©2006DEHN+SÖHNECutawayofFRTShell/浮动屋顶概览RoofSealInterface屋顶连接接口罐体不锈钢分流片浮动屋顶顶部©2006DEHN+SÖHNEHowlightningcausestankfiresdirectlightningstrike直接雷击时如何导致油罐着火©2006DEHN+SÖHNEHowlightningcausestankfiresnearbylightningstrike邻近雷击时如何导致油罐着火©2006DEHN+SÖHNECutawayofFRT/浮顶油罐概览Shuntaboveseals/分流片位于连接点上端©2006DEHN+SÖHNECutwayofFRT/浮顶油罐概览Shuntaboveseals/分流片位于连接点上部Unfortunately,shuntsdonotprovideacertain,lowresistancebondtothetankshellforseveralreasons,including:不幸的是,分流片无法提供某个确定的低阻主要包括以下几个原因:1.Heavycrudeoilcomponents,suchaswax,tar,paraffin,etc.,tendtocoattheinsideofthetankwall,thusforminganinsulativebarrierbetweentheshellandshunts.原油成分,如蜡,沥青,石蜡等,可涂在罐体内壁形成隔离层2.Corrosion(rust)ontheinsideoftheshellwillcreateahighresistanceconnectionbetweentheshellandshunts.外壳内腐蚀(生锈)在外壁和分流片间会产生高阻抗节点.3.About10to25%ofallFRT´sarepaintedontheinside,typicallywithepoxy-basedpaint.Whetherornottopaint...
