工程船舶管路清洗技术方案_revised==

工程船舶管路清洗技术方案_revised==内容摘要：

e 50HZ 清洗水 50m3 Flushing water 50m3 压缩空气 压力 以上（可以采用船舶自备空压设备） Compressed air Pressure: over (adopt selfcontained air pressor on the vessel) 、我方自备设备材料 Selfcontained equipment and material 循环清洗泵 35m179。 两台， 65m179。 两台 Circulating cleaning pump 35m179。 : two sets, 65m179。 : two sets 清洗循环箱 、 1 立方各一只 Circulating cleaning tank 179。 and 1 m179。 , one for each 油冲洗专用装备 流量 65m179。 两台 根据管径确定流量和压力 Special Oil flushing equipment two sets rate of flow: 65m179。 Determine according to pipe diameter and pressure 油冲洗循环油箱一只 Circulating oil flushing tank 1 set 管道加热器 配套 Pipe heater auxiliary equipment 管道振动器配套 Pipe vibrator auxiliary equipment 泵前过滤器、回油双联精密过滤器配套滤芯。 Prepump filter, oil return double precision filter Equipped with filter element 管道短接 提供法兰及接头等工装。 Pipe nipple: provide flange and connector and other work fixture 管道短接用软管 Soft hose of pipe joint 串油用相应工作冲洗油及轻质柴油。 Relevant flushing oil at work as well as light diesel oil 三合一螯合清洗剂 Threeinone chelating cleaner 钝化防锈剂 Passivating antirust agent 清管球配套 Equipped with spherical pigs 七、 化学清洗、油冲洗的步骤 七 . Procedures of chemical cleaning, oil flushing 本次化学清洗程序如下： The chemical cleaning procedure is shown as follows: 循环系统 连接及试压 → 水冲洗 → 脱脂除锈清洗 → 防锈钝化处理→ 吹扫通球 → 连接串油设备 → 油冲洗 → 验收复位。 Circulating system connection and pressure test → water flushing → degreasing, antirust cleaning process → antirust, passivating process → purging, pigging process → oil flushing equipment connected → oil flushing → acceptance, resetting. 、试压水冲洗 Pressure test and water flushing 将清洗水注满被清洗系统内后，打开清洗泵开启循环，检查管线接口和封堵盲板有无泄漏，打开排气阀检查弯头高位管道是否充满液体，打开排污阀门将系统内的水迅速排空，这样既冲洗了设备内部的杂质又可避免临时系统内的杂质带入设备内部，还可检查系统有无渗漏和临时管道设置问题。 该程序需 23 小时。 冲洗流速大于 2m/s。 The required piping system is filled with washing water before flushing pump is opened。 inspect if there is any leakage for pipe joints and blind plates。 open exhaust valve for inspection of elbow and overhead pipes if they are filled with fluid。 open drainage valve for quickly draining off water in the system, in this case, not only can the impurities in the piping system be flushed off, but the impurities in the temporary piping system can be avoided to enter into the equipment, which the system can also inspected if there is any leakage and pipe installation problem. It takes about 23 hours or so for operation of this procedure. Flushing flow rate: 2m/s. 、脱脂除锈清洗 Degreasing, antirust flushing process 目的是为了清除水冲洗难以去除掉的油污、氧化锈垢，使金属露出活性表面。 为预膜打好基础。 按预算三合一清洗剂分多次加入系统，每 20min 测量 一次 PH值或 Fe2+，清洗终点判断是通过 PH和铁离子浓度的变化确定。 清洗时间 2448 小时。 清洗结束时立即大量排水并 补水，当浑浊度降至 10NTU 以下时，可开始下一步工作。 It is intended for removal of oil impurities and oxidized rust deposit which is difficult to be eliminated during the water flushing process, enabling the metal to expose its active surface, which it paves the way for prefilming process. According to the requirement of budgeting, threeinone cleaning agent is added into the system by several times, PH value or Fe2+ can be measured once every 20min. The flushing process is pleted after changes of PH value and Fe2+ concentration id determined. Flushing time: 2448 hours. A large volume of drainage water can be discharged, with fresh water supplemented after pletion of flushing process. We can take next step after turbidity degree is decreased up to 10NTU below. 主剂 Primary chemical agent 有机螯合剂、分散剂、渗透剂、表面活性剂等成分组成； Organic chelating agent, dispersing agent, perant, surface active agent and other ingredients。 助剂 Aids 消泡剂：高分子渗透剂、反应促进剂、界面 活性剂组成。 Defoamer: highmolecule perant。 reaction accelerator, interfacial agent. 腐蚀标准碳钢挂片。 Standard corrosion carbon steel coupon 、工艺条件 Process conditions 温度 常温 Temperature: normal temperature 流速 1m/s Flow rate: 1m/s 时间 1224 小 时 Time: 1224 hours 、防锈钝化处理 Antirust, passivation 因考虑清洗后管道无法立即投入使用，防止因停放时间过长引起管道返锈的问题出现，有效延长管道返锈时间。 清洗后应立即做防锈钝化处理。 Considering that the flushed piping system cannot be operated at once and to prevent rerusting in the piping system after it cannot be used for a long time, this treatment can be utilized to effectively prolong the rerusting time. Therefore, antirust and passivating process should be immediately performed after the flushing process is pleted. 、药剂 Chemical agent 钝化防锈剂、 PH调节剂、红点检测液。 Passivating, antirust agent, PH regulating agent, red dot detection liquid. 、工艺条件 Process conditions 温度 常温 Temperature: normal temperature。