BS ISO 17918:2015规定了现场检测和评估程序，以确定 材料劣化的影响，如部件和结构的材料损失 对包括核电站在内的工业设施的选择性腐蚀敏感。该方法包括目视检查和现场硬度测量 通过去除样本。这些程序包括（a）敏感部件的代表性取样 对于选择性腐蚀，（b）目视检查，（c）硬度测试。确切地说 分析后，建议进行额外的实验室测试。该方法最适用于锌含量超过15%的灰铸铁和铜合金。 扩展到其他合金需要验证的支持性证据。在过去五年中，针对核电站应用的评估标准 扩展操作的结束定义了进一步工程评估和行动的必要性，例如 例如，进一步抽样、更高的检查频率以及部件维修或更换。本规范不适用于表面代表性取样的部件 与流体接触时，无法通过光学或便携式硬度计检测到。而且 如果在暖通空调或建筑服务应用中选择非代表性部件，则 本规范不适用。对于未用于核电厂的部件，评估标准 必须经双方同意。仅硬度试验的评估标准不适用于 铝青铜、NAB和Cu-Ni结构完整性的评估。交叉引用:ASTM E110-82ISO 3058ISO 6506- 1ISO 6506-2ISO 6506-3ISO 6507-1ISO 6507-2ISO 6508-1ISO 6508-2ISO 8044NUREG-1801购买本文件时提供的所有当前修订版均包含在购买本文件中。

BS ISO 17918:2015 specifies procedures of on-site detection and evaluation in order to determine the effects of material deterioration such as material loss from the components and structures that are sensitive to selective corrosion in industrial facilities, including nuclear power plants.The methodology involves visual inspection and hardness measurements in situ complemented by sample removal. These procedures include (a) representative sampling of components sensitive to selective corrosion, (b) the visual inspection, and (c) the hardness test, respectively. For an exact analysis, additional laboratory testing is recommended.The methodology is most applicable to grey cast iron and copper alloy with more than 15 % zinc. Extension to other alloys requires supportive evidence of validation.Assessment criteria orientated to the nuclear power plant application during the past five years before the end of extended operation define the necessity for further engineering evaluation and action like, for example, further sampling, higher frequency of inspection, and component repair or exchange.This specification is not applicable for components used where the representative sampling of surfaces in contact to the fluid is not detectable optically or detected with the portable hardness tester. Also, in case of non-representative component selection like in HVAC or building service application, this specification is not applicable. For components not used in nuclear power plant, the assessment criteria have to be agreed by the parties. Assessment criteria of hardness test alone is not applicable to the evaluation of structural integrity of Al-bronze, NAB, and Cu-Ni.Cross References:ASTM E110-82ISO 3058ISO 6506-1ISO 6506-2ISO 6506-3ISO 6507-1ISO 6507-2ISO 6508-1ISO 6508-2ISO 8044NUREG-1801All current amendments available at time of purchase are included with the purchase of this document.