1、关于不锈钢二期板坯连铸机液压、润滑系统管线的酸洗钝化施工方案Pickling and Passivation Solution For The Hydraulic and Lubrication System of Con-caster一、 清洗目的I. Purpose of Cleaning管线在生产、运输会使管线内产生微量油污、金属粒子，特别是氧气管线内金属粒子可能与高纯氧高压氧化、撞击，产生电火花而发生不堪设想的严重后果，历史上这样惨重的事故很多，因此清洗钝化是必不可少的。Durin g the production and transportation of pipes,oil res2、idue,metal particals,especially the metal particals would react with high purity oxygen under high pressure, producing electric sparkling and leading to catastrophic result.Infact, it happened times again in the past.Therfore, it is highly necessary to cleaning and passivating the piping lines.项目名称：3、不锈钢专项炼钢分项板坯连铸机液压、润滑系统管线酸洗、钝化II. Project name: Pickling and Passivation Solution For The Hydraulic and Lubrication System of Con-caster1、 氧化管线：Oxydized pipelinesSpec.LengthSpec.Length483.578m34327m603.545m48720m76464m60845m114416m385500m101.564m422.570m12236m893.2100m163500m203422.5m2531104m304328m2、4、 施工人员：6人，在双方达到协议开工后，我方将派出由项目负责人带队的有实践经验的专业清洗工4人和一个安全员组成的队伍到现场实施清洗工作，可视工期及施工进度适当增加或减少人员。3、 Operators:6 operators. Before the agreed date of start-up of cleaning, we will dispatch 4 experienced cleaning workers and a safety inspector led by project manager to JISCOsite for pipeline cleaning .Personnel5、 arrangement is flexible according to the actual demand of project proceeding.4、 施工机具：清洗泵、4只耐酸清洗槽、吊车、加热器、水管、玻璃钢等。5、 Operating tools: cleaning pumps, 4 anti-acid cleaning tank, crane,heaters, water pipe.6、 安全措施：涉酸碱作业，所有工作人员配备安全帽、护目镜、防毒面具、耐酸碱手套、雨靴、穿戴齐全方可作业，现场配有5%的苏打水。7、 Safety measurement: For all wor6、ks involving acid or alkaline, the operators need to be equipped with safety helmet,eye-protection glasses,mask,anti-acid/alkaline gloves,rain bootsetc. Any operator who is not safely equipped is forbidden to get into the site. 5% soda water is available on site.8、 废液收集处理：清洗完毕后，清洗废液在槽内中和后经业主确认后排放。9、7、 Collection of waste liquid: After cleaning procedure, the waste will be neutrolized in the tank and discharged after safety confirmation of JISCO.二、 具体施工方案三、 Specific operation procedure1、 酸洗钝化工艺：采用脱脂、酸洗钝化三步分开进行法2、 Pickling and passivation procedure: degreasingpicklingpassivation.脱脂-高压水-酸洗-漂洗-钝化-高压8、水冲洗-吹干-封存To be specific: degreasinghigh pressure water flushingpickling rinsingpassivationhigh pressure water flushingblowing to dry-covered up.脱脂剂配方：氢氧化钠10%、碳酸钠50%、表面活性剂5%Recipe of degreasing agent:NaOH:10%; NaCH50%; surface activation agent 5%.酸洗剂配方：盐酸20%、硝酸50%、缓蚀剂1%Recipe of pickling agent: HCL209、%, Nitric acid 50%, anti-corrosion agent 1%钝化剂配方：磷酸50%、氧化锌35%、亚硝酸钠2%Passivation agent recipe: Phosphoric acid 50%, Oxydized zinc 35%,亚硝酸钠2%3、 施工质量目标：有效去除管道内表面、油渍、锈渍、铁屑等杂物，形成钝化膜。4、 Target: Remove the impurities,oil residues, rust etc. on the inner surface of the pipeline.5、 温度控制：脱脂-常温、酸洗-常温、钝化-加温506、10、 Temperature control:degreasing-ambient temp.;pickling-ambient temp.;passivation-heat up to 507、 施工质量检验：目视法，管线内壁无明显锈渍、杂物、油渍，形成完整的钝化膜。8、 Quality inspection:by naked eyes,to see if there is obvious rust,impurity,oil residue,and whether the complete passivation film has been formed.9、 施工工期进度：从进现场共计5天1011、 Time consumption: 5 days all together 1） 准备工作1天1 day for preparation.2） 清洗3天3days for cleaning,3） 退场1天1 day for retreat 11、 工程清场及验收退场Project clearance ,inspection and withdrawal;1） 清场：所有工具运出现场、废液中和排放Clearance; all tool get out of site, waste liquid being neutralisedand discharged.2） 退场：检验合格，带管子缝墙运12、回现场，工程达标完成关于不锈钢二期板坯连铸机液压、润滑系统管线的焊接施工方案Welding solution for the piping of hydraulic and lubrication system of Con-caster我单位油管焊接采取两个方案，一个是插入式焊接如下图所示2 options:one is insert welding,see following drawing:由于此对接属于插入式，不会导致氧化皮进入管内，所以，只需要直接焊接即可。By insert connection,the scale will not get into the pipe,then, 13、just weld them.另一种焊接方式属于对接式焊接，如下图所示Another is butt welding , as shown in the following drawing:由于此对接方式，管内易产生氧化皮，故将管内充满氮气，将管内空气排净，且焊缝处，氩弧焊打底，再进行正常焊接。AS for this solution, scale will be produced.So, nitrogen is to be filled in the pipe to discharge oxygen completely.At the seam, argon-arc welding will be implemented before normal welding.