焊接和火焰切割作业

Page 1 of 5 WeldingWelding andand FlameFlame CuttingCutting 焊接和火焰切割作业焊接和火焰切割作业 GeneralGeneral provisionsprovisions 通则 1 Welders should wear fire resistant protective clothing and equipment such as fire resistant gauntlets and aprons helmets and goggles with suitable filter lenses 焊工必须配备防火服和防火设备 如防火的防护手套和围裙 安全帽 以及带滤镜的护目镜 2 Welders should wear clothing that is free from grease oil and other flammable material 焊工穿戴的防火服上必须无油腻 油脂 或其他易燃物 3 Workers removing excess metal slag etc should 施工人员清除多余金属和焊渣等时 必须 Wear gloves and goggles or a face screen 配戴防护手套 护目镜或防护面罩 Chip away from the body and 使碎屑远离身体 Ensure that other persons are not struck by chips 确保碎屑不会伤及他人 4 Adequate precautions should be taken to protect persons working or passing near welding operations from dangerous sparks and radiation 必须采取足够的预防措施 保证施工人员在作业或通过焊接操作区时不会受到火星或辐射伤害 5 When welding or cutting is being done on materials containing toxic or harmful substances or liable to produce toxic or harmful fumes adequate precautions should be taken to protect workers from the fumes either 对有毒或有害的物质 或者可能产生有毒或有害的物质施焊或切割时 必须采取充分的预防措 施 保证作业人员不受影响 也可以采取下列措施 By exhaust ventilation or Page 2 of 5 排气通风 或 By respiratory protective equipment 配戴呼吸防护设备 6 At places where welding machines are operated by internal combustion engines adequate ventilation should be provided 内燃机操纵式焊机的施工区域必须提供有足够的通风 7 A suitable fire extinguisher should be kept ready for immediate use at places where welding is done 焊接工作的地方必须放置一个适合的灭火器 以备需要时可立即使用 8 The oxygen pressure for welding should always be high enough to prevent acetylene flowing back into the oxygen cylinder 焊接使用的氧气必须始终保持足够高的压力 避免乙炔倒灌到氧气瓶中 9 Acetylene should not be used for welding at a pressure exceeding 1 bar gauge 乙炔压力大于 1 bar 时不得用于焊接 10 Adequate precautions should be taken to prevent 必须采取充足的预防措施 以避免 Fire being started by sparks slag or hot metal and 火星 焊渣或热金属造成火灾 和 Damage to fibre ropes from heat sparks slag or hot metal 火星 焊渣或热金属损害纤维绳索 11 Precautions should be taken to prevent flammable vapours and substances from entering the working area 采取预防措施 避免易燃汽化液体和物质进入施工区域 12 Only competent and authorised workers shall use welding and cutting equipment 只有胜任工作的施工人员在授权之下才可以使用焊接和切割设备 WeldingWelding atat placesplaces withwith firefire risksrisks 在有火灾风险场所施焊 Page 3 of 5 1 Unless adequate precautions are taken no welding or cutting operations should be allowed near places where combustible materials are stored or near materials or plant where explosive or flammable dusts gases or vapours are likely to be present or given off 除非采取充足的预防措施 否则不得在可燃材料贮存地附近 或可能存有或产生易爆易燃的粉 尘 气体或蒸汽的材料或设备附近进行焊接或切割作业 2 Combustible materials and structures that cannot be removed from the vicinity of welding operations should be shielded or protected by other suitable means 不能从焊接作业场所附近移走的可燃材料和结构必须遮盖或采用其他方法进行保护 WeldingWelding in in confinedconfined spacesspaces 在封闭空间内施焊 When welding and cutting operations are being carried out in a confined space 如果在封闭空间内实施焊接作业 必须 1 Adequate ventilation by means of exhaust fans or forced draught as the conditions require should be constantly provided oxygen should not be used for this purpose 视具体情况 通过排风扇或鼓风机不断地进行充分通风 不得使用氧气 2 No blow torch should be left unattended inside a tank or vessel or other confined space during meals or other interruptions of the work 用餐时间或其他作业间断期间 不得将喷灯随意放置在无人照管的容器内或其他限制的场所 3 The workers should take all necessary precautions to prevent unburned combustible gas or oxygen from escaping inside a tank or vessel or other confined space and 施工人员必须采取所有必要的预防措施 防止未完全燃烧的可燃气体或氧气泄漏到容器中或其 他封闭空间 4 When necessary to prevent danger an attendant should keep watch on the welder or welders from outside 有可能发生危险的场所 应派专人在外进行监控 WeldingWelding onon containerscontainers fromfrom explosiveexplosive oror flammableflammable substancessubstances 对贮藏易爆或易燃物质容器的施焊 1 Welding or cutting operations should not be carried out on containers in which there are explosive or flammable substances 不得对存放有易爆或易燃物质的容器进行焊接或切割作业 Page 4 of 5 2 Welding or cutting operations on any container that has held explosive or flammable substances or in which flammable gases may have been generated should only be undertaken 如果对存有放易爆易燃物质或者可产生易燃气体的物质的容器进行焊接或切割作业 必须采取 以下措施 Unless the container has been 除非该容器已经 thoroughly cleansed by steam or other effective means and 用蒸气或其他方法完全清洁 并且 found by air tests to be completely free from combustible gases and vapours or 通过气体检验证明完全没有可燃气体或蒸气 Unless the air in the container has been completely replaced by an inert gas or by water 除非容器中的空气已经彻底换成惰性气体或水 3 If an inert gas is used the gas should after the vessel has been filled with it continue to flow slowly into it throughout the welding or cutting operation 如果使用惰性气体 将其完全充入容器后 在焊接或切割的整个作业过程中 惰性气体还应继 续缓慢地流入容器内 4 Before starting any welding operations or otherwise applying heat to closed or jacketed containers or other hollow parts such containers or parts should be adequately vented in a suitable manner 焊接作业实施之前或者对封闭的套式容器或其他空心件进行加热前 必须对上述容器或空心件 实施充分适当的通风 HosesHoses 软管 1 Only hose specially designed for welding and cutting operations should be used to connect an oxy acetylene torch to gas outlets 焊接和切割作业时 只能使用专用软管将氧乙炔焊枪连接到供气装置上 2 Hose lines for oxygen and for acetylene should be of different colours and preferably of different sizes 氧气和乙炔必须使用不同颜色的软管 最好管径也不同 Page 5 of 5 3 Hose connections should be sufficiently tight to withstand without leakage a pressure twice the maximum delivery pressure of the pressure regulators in the system 软管连接必须紧密 确保压力达到系统减压阀最大输出压力的两倍时不会发生漏气现象 4 Care should be taken that hose does not become kinked or tangled stepped on run