GB/T 30506-2014 in English

《GB/T 30506-2014船舶和海上技术 润滑油系统 清洁度等级和冲洗导则》由TC137（全国船用机械标准化技术委员会）归口，主管部门为国家标准化管理委员会。
本标准规定了润滑油系统的清洁度等级和冲洗导则。冲洗的作用有两方面:一是除去安装和装配过程中侵入的污染物;二是确保管路和系统作为一个整体有足够的清洁度。
曲轴箱和齿轮箱在冲洗前宜分别进行清洁,本标准规定了具体的清洁要求。这些要求同样适用于系统油箱和其他系统零部件。
本标准规定了当雷诺数Re≤3000时的清洁过程为透洗,当雷诺数Re≥3000时的清洁过程为冲洗。

Scope

This standard specifies cleanliness classes and flushing guidelines for lubricating oil systems. The role of flushing has two aspects: one is to remove the intruded pollutants during installation and assembly; the other is to ensure that the pipeline and system as a whole have sufficient cleanliness. The crankcase and gearbox should be cleaned separately before flushing. This standard specifies the specific cleaning requirements. These requirements also apply to system tanks and other system components. This standard stipulates that when the Reynolds number Re≤3000, the cleaning process is overwashing, and when the Reynolds number Re≥3000, the cleaning process is flushing.