化学船洗舱程序

化学船洗舱程序 Cargo tank Cleaning Procedure For chemical tanks 一(洗舱前作业 Prior to tanks cleaning: 货舱装货前，大副依前装货品特性及拧装货品对货舱的要求，与船长讨论并确定洗舱计划， 卸货后，办妥(危险工作同意 书 关于书的成语关于读书的排比句社区图书漂流公约怎么写关于读书的小报汉书pdf )，依(货舱清洗操作 规范 编程规范下载gsp规范下载钢格栅规范下载警徽规范下载建设厅规范下载 )指示相关人员进行货舱清洗 The chief officer should discuss with master according to the characteristic of the cargo and wall test standard to fix the tanks washing plan before the cargo is loading ，after discharging ，the chief officer should fill the“ work permit or permit for working in dangerous /enclosed spaces”， instructs relevant person following the “operation procedure of tank cleaning ”to proceed the tank washing operation。 二(作业舱间之气体评定与注意事项 Assessing the atmospheres of working tank and precautions 大副依货舱量测结果评定作业舱间之气体为过贫或为可燃范围不明确之大气而按各其注意 事项进行洗舱 Prior to proceed the tanks cleaning ，chief officer shall analyzing tanks atmosphere to valuate the tank is Too lean or undefined ，atmosphere，the following precaution must be took account 清洗过贫大气舱间 Washing in a too lean atmosphere 1(洗舱前应先冲洗舱底，管线系统及货泵并与排干，其冲洗水应排入指定的污水舱 Before washing ，the tank bottom 。piping system and cargo pump should be flushed with water and stripped ，the flushing water should be drained to the designated to receive slops。 2(为避免可燃气体含量超过大气之10%及为降底可燃气燃烧极限，洗舱前应充分通风 Before washing ，the tank should be ventilated to reduce the gas concentration of the atmosphere to 10% or less of the lower flammable limit 3(当使用废气回收总管时，为避免它舱可燃气的进入，应将该洗舱之回收管用盲板隔开 If the tank has a venting system which is common the other tank ，the tank must be isolated to prevent an ingress of gas from other tanks 4(如果用手提式洗舱机洗舱时，于放置洗舱机入舱前应与洗舱皮龙妥善连接并测试其导电 效果良好 When portable washing machines are used ，all hose connections should be made up and tested for electrical continuity before the washing machine is introduced into the tank 5(洗舱各过程中应保持可燃气体之检测 During tank washing regular gas tests must 6(洗舱时舱底不得淤织e at various levels。 The tank should be kept drained during washing 7(洗舱水不得再生使用， Recirculated wash water should not be used for tank washing 8(蒸气不得灌注于清洗中之舱间， Steam should not be injected into the tank 9(清洗可燃范围不明确之大气舱间时其量舱与设备使用之注意事项与清洗过贫大气舱间 时相同 The same precautions relating to sounding and the introduction of other similar equipment should be taken as when washing in an an undefined stmosphere 10( 若洗舱水温度低与60度时，可使用化学添加剂洗舱 Chemical additives may be employed provided the temperature of the wash water does not exceed 60 degree C 11( 当洗舱水温度达(或低于)60度且舱间大气量测结果为可燃气下限之50%，或当洗 舱水温度达(或高于)60度且舱间大气量测结果为可燃气下限之35%时，应暂停洗舱 When wash water temperature is 60 degree c or less ,washing should be discontinued if the gas concentration reaches 50% of the LFL, When the wash water temperature is above 60 degree C,washing should be discontinued if the gas concentration reaches 35% of the LFL. 清洗可燃范围不明确之大气舱间 Washing in an undefined atmosphere 在一可燃范围不明确的大气舱间内，其舱间气体可能在可燃范围内，避免洗舱过程中发 生爆炸，最好的方法即为防止任何之闪火发生 In an undefined atmosphere ,the vapours in the tank may be in the flammable range ,the only may to guarantee that an explosion cannot occur during washing in an undefined atmosphere is to make certain that there can be no source of ignition. 1(洗舱机水用量应控制在每小时60立方米以下 No machine may have a throughput greater than 60 m3/h 2(用于每清洗舱间之洗舱水量不得超过180立方米，只与过给大气舱间应有专业人员在现 场指导方可进行 The total water throughput per cargo tank should be kept as low as practicable and must in no case exceed 180 m3/h,the procedure for making a tank atmosphere over rich and thereafter water washing the tank involve special measures intended to prevent the ingress of air,this method of tank washing should only be carried out when authorized by the operation and under the supervision of a person who has received special training in these procedures 洗舱水排放注意事项 Precaution of discharging tank’s cleaning water 洗舱水的排放应按一九七三/一九七八防止船舶污染国际公约之 规定 关于下班后关闭电源的规定党章中关于入党时间的规定公务员考核规定下载规定办法文件下载宁波关于闷顶的规定 ，并特别注意: When vessel discharging tank’s cleaning water the MARPOL 73/78 should be strictly complied and follow items well takes into account 1(该船在航行中(自航式船舶其航速不低于7节，非自航式船舶其航速不低于四节) The ship is proceeding an route at a speed of at least 7 knots in the case of self –propelled ships or at least 4 knots in the case of ships which are not self-propelled 2(排水系于水线下为之，并已考虑海水吸口之位置，及 The discharge is made below the waterline ,taking into account the location of the seawater in takes;and 3(排水系在最近陆地至少12哩，其水深至少25 公尺 The discharge in made at a distance of not less than 12 nautical miles from the nearest land in a depth of water of not less than 25 meters 四，洗舱后之入舱清舱作业 Crewmember enter into washed tank for cleaning 货舱清洗后，每次人员入舱作业须按规定重办(危险工作同意书)，以确定货舱工作条件维 持安全良好之状况，入舱人员应确实依(船员防护用具使用须知)规定，穿戴齐备始可入舱。 To make sure working condition of tanks are in safe condition ,the work permit or permit for working in dangers /enclosed spaces ,should be filled individually when person enter the tanks for any reason after the tank be washed ,the wering policy should be strictly followed when any person for any reason trying to enter the tanks.