1.1本指南涵盖了在运行条件下对工厂设备或系统进行腐蚀试验的程序，以评估工程材料的耐腐蚀性。它不包括测定腐蚀速率的电化学方法。 1.1.1虽然主要用于浸没试验，但提供的一般指南可适用于在工厂大气中暴露试样，前提是试样的放置和方向不限制空气循环。 1.2以国际单位制表示的数值应视为标准。括号中给出的值仅供参考。 1.3 本标准并非旨在解决与其使用相关的所有安全问题（如有）。 本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。 另见10.4.2。 ====意义和用途====== 笔记 1-本指南符合NACE标准RP0497。 腐蚀试验得出的观察结果和数据用于确定平均腐蚀速率或其他类型的腐蚀，或两者兼而有之（见术语G 15 )，在暴露间隔期间发生。这些数据可用于评估用于类似服务的候选建筑材料或现有设施中的替代材料。 从中开发的数据- 工厂测试也可作为现有工厂材料行为的指导线，用于安排维护和维修。 单次暴露得出的腐蚀速率数据通常不会提供腐蚀速率随时间变化的信息。腐蚀速率可能增加、减少或保持不变，这取决于腐蚀产物的性质以及点蚀或缝隙腐蚀开始时所需的培养时间的影响。

1.1 This guide covers procedures for conducting corrosion tests in plant equipment or systems under operating conditions to evaluate the corrosion resistance of engineering materials. It does not cover electrochemical methods for determining corrosion rates. 1.1.1 While intended primarily for immersion tests, general guidelines provided can be applicable for exposure of test specimens in plant atmospheres, provided that placement and orientation of the test specimens is non-restrictive to air circulation. 1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 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 and health practices and determine the applicability of regulatory limitations prior to use. See also 10.4.2. ====== Significance And Use ====== Note 1—This guide is consistent with NACE Standard RP0497. Observations and data derived from corrosion testing are used to determine the average rate of corrosion or other types of attack, or both (see Terminology G 15 ), that occur during the exposure interval. The data may be used as part of an evaluation of candidate materials of construction for use in similar service or for replacement materials in existing facilities. The data developed from in-plant tests may also be used as guide lines to the behavior of existing plant materials for the purpose of scheduling maintenance and repairs. Corrosion rate data derived from a single exposure generally do not provide information on corrosion rate change versus time. Corrosion rates may increase, decrease, or remain constant, depending on the nature of the corrosion products and the effects of incubation time required at the onset of pitting or crevice corrosion.