1.1 本规范涵盖了在规定的流动条件下使用旋转圆筒电极（RCE）评估油田和炼油厂应用的腐蚀抑制剂的普遍接受的程序。 1.2 以SI单位表示的值将被视为标准值。SI单位后括号中给出的值仅供参考，不被视为标准值。 1.3 本标准并不旨在解决与其使用相关的所有安全性问题（如果有）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践并确定法规限制的适用性。 1.4 本国际标准是根据世界贸易组织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委员会。 ======意义和用途====== 5.1 油田和炼油厂应用缓蚀剂的选择涉及缓蚀剂在实验室的鉴定（见指南 G170 ).应在实验室中以快速和经济有效的方式模拟现场条件 ( 1 ) . 3 5.2 油田缓蚀剂应在从停滞到典型生产条件下发现的一系列流动条件下提供保护。并非所有抑制剂在该条件范围内都是同等有效的，因此使用一定范围的流动条件测试抑制剂对于抑制剂的正确评价是重要的。 5.3 RCE是在实验室设备中获得不同流体动力学条件的紧凑且相对便宜的方法。它允许用电化学方法估计样品上的腐蚀速率，并在金属测试表面上产生均匀的流体动力学状态。( 2- 21 ) 5.4 在本实践中，提出了一个通用程序，以使用RCE来模拟不同类型的试样材料、抑制剂浓度、油、气体和盐水组成、温度、压力和流量的影响，以获得可重复的结果。油田流体可能经常含有沙子。这种做法不包括沙子存在时发生的侵蚀效应。

1.1 This practice covers a generally accepted procedure to use the rotating cylinder electrode (RCE) for evaluating corrosion inhibitors for oil field and refinery applications in defined flow conditions. 1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard. 1.3 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. 1.4 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 Selection of corrosion inhibitor for oil field and refinery applications involves qualification of corrosion inhibitors in the laboratory (see Guide G170 ). Field conditions should be simulated in the laboratory in a fast and cost-effective manner ( 1 ) . 3 5.2 Oil field corrosion inhibitors should provide protection over a range of flow conditions from stagnant to that found during typical production conditions. Not all inhibitors are equally effective over this range of conditions so that is important for a proper evaluation of inhibitors to test the inhibitors using a range of flow conditions. 5.3 The RCE is a compact and relatively inexpensive approach to obtaining varying hydrodynamic conditions in a laboratory apparatus. It allows electrochemical methods of estimating corrosion rates on the specimen and produces a uniform hydrodynamic state across the metal test surface. ( 2- 21 ) 5.4 In this practice, a general procedure is presented to obtain reproducible results using RCE to simulate the effects of different types of coupon materials, inhibitor concentrations, oil, gas and brine compositions, temperature, pressure, and flow. Oil field fluids may often contain sand. This practice does not cover erosive effects that occur when sand is present.