1.1 本指南适用于收集代表性流体样本，用于发电行业蒸汽和燃气轮机润滑以及发电机冷却气体密封系统的有效状态监测。此外，本指南还适用于从包括液压系统在内的发电辅助设备中收集具有代表性的样本。 1.2 该流体可用于涡轮发电机轴承和齿轮的润滑，用于密封发电机冷却气体以及用于控制系统的液压流体。流体通常由专用泵从公共或单独的储液器供应到系统中的不同点。 一些大型蒸汽轮机润滑系统还可以具有单独的高压泵，以允许在旋转之前为负载最重的轴承产生静水压流体膜。对于一些部件，润滑流体可以以飞溅的形式提供，该飞溅是由在大气压力下移动通过流体表面的系统部件形成的。 1.3 涡轮机润滑和液压系统主要使用石油基流体润滑，但偶尔也使用合成流体。 1.4 对于大型润滑和液压涡轮机系统，从不同位置提取多个样本以确定特定部件的状况可能是有益的。 1.5 以国际单位制表示的数值被视为标准。 1.5.1 括号中给出的值仅供参考。 1.6 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.7 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 5.1 流体分析是确定流体和设备条件的支柱之一。如果需要，流体分析的结果用于规划纠正性维护活动。 5.2 适当的流体取样过程的目的是从关键位置获得具有代表性的流体样本，该样本可以提供有关设备和润滑剂或液压流体状况的信息。 5.3 额外的目标是降低采样过程中系统和流体样本受到外部污染的可能性。 5.4 本指南旨在帮助用户以安全的方式获得具有代表性和可重复的流体样本，同时防止系统和流体样本污染。

1.1 This guide is applicable for collecting representative fluid samples for the effective condition monitoring of steam and gas turbine lubrication and generator cooling gas sealing systems in the power generation industry. In addition, this guide is also applicable for collecting representative samples from power generation auxiliary equipment including hydraulic systems. 1.2 The fluid may be used for lubrication of turbine-generator bearings and gears, for sealing generator cooling gas as well as a hydraulic fluid for the control system. The fluid is typically supplied by dedicated pumps to different points in the system from a common or separate reservoirs. Some large steam turbine lubrication systems may also have a separate high pressure pump to allow generation of a hydrostatic fluid film for the most heavily loaded bearings prior to rotation. For some components, the lubricating fluid may be provided in the form of splashing formed by the system components moving through fluid surfaces at atmospheric pressure. 1.3 Turbine lubrication and hydraulic systems are primarily lubricated with petroleum based fluids but occasionally also use synthetic fluids. 1.4 For large lubrication and hydraulic turbine systems, it may be beneficial to extract multiple samples from different locations for determining the condition of a specific component. 1.5 The values stated in SI units are regarded as standard. 1.5.1 The values given in parentheses are for information only. 1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 Fluid analysis is one of the pillars in determining fluid and equipment conditions. The results of fluid analysis are used for planning corrective maintenance activities, if required. 5.2 The objective of a proper fluid sampling process is to obtain a representative fluid sample from critical location(s) that can provide information on both the equipment and the condition of the lubricant or hydraulic fluid. 5.3 The additional objective is to reduce the probability of outside contamination of the system and the fluid sample during the sampling process. 5.4 The intent of this guide is to help users in obtaining representative and repeatable fluid samples in a safe manner while preventing system and fluid sample contamination.