船舶和海洋技术.润滑油系统.清洁和冲洗等级用指南

[中文适用范围]： 本国际标准提供了润滑系统冲洗的指导以及冲洗后清洁度的分级。冲洗过程分为两个方面：去除安装和建造过程中产生的污垢；证明管道和整个系统足够清洁。曲轴箱以及适用情况下的齿轮箱等在冲洗前需单独清洗，本国际标准也规定了相关要求。类似的考虑也适用于系统油箱和其他系统组件。对于本国际标准，当雷诺数 Re 为 3000 时，清洗过程被视为“冲洗”，当 Re 大于等于 3000 时，被视为“冲洗”。注：如有可用，任何原始设备制造商（OEM）关于冲洗的要求优先于本国际标准中概述的要求。 [外文原描述]： ISO 28520:2009 provides guidance for flushing of lubricating oil systems, and grading of the resultant cleanliness. The flushing process is twofold: to remove dirt from the erection and installation, and to demonstrate that the pipes and the system as a whole is sufficiently clean. Crankcase and, where applicable, gearbox etc. are cleaned separately before flushing, and requirements relating to this are also specified in ISO 28520:2009. Similar considerations apply to the system tank and other components of the system. For the purposes of ISO 28520:2009, the cleaning process is considered as “washing through” when the Reynolds is equal to or less than 3 000 and “flushing” when the Reynolds number is equal to or greater than 3 000. Where available, any original equipment manufacturer requirements for flushing take precedence over the requirements outlined in ISO 28520:2009.