请注意:本出版物的格式为活页本。如果您想在订单中添加活页夹，请阅读本页。NB小节包含材料、设计、制造、检查、测试、过压释放、标记、冲压、，以及由证书持有人编制旨在符合1级施工要求的项目报告。NB小节的规则涵盖了项目的强度和压力完整性要求，如果项目失败，将违反保压边界。这些规则涵盖了最初的施工要求，但不包括在使用中可能因腐蚀、辐射效应或材料不稳定而发生的劣化。 NCA-1130对本小节的规则进行了进一步的限制。仔细应用本节将有助于用户遵守其管辖范围内的适用法规，同时从这些卷中详细介绍的许多行业最佳实践中获得运营、成本和安全效益。

Please note: the format of this publication is loose-leaf. Pleasevisit this pageif you would like to add a binder to your order.Subsection NB contains rules for the material, design, fabrication, examination, testing, overpressure relief, marking, stamping, and preparation of reports by the Certificate Holder of items that are intended to conform to the requirements for Class 1 construction.The rules of Subsection NB cover the requirements for strength and pressure integrity of items, the failure of which would violate the pressure-retaining boundary. The rules cover initial construction requirements, but do not cover deterioration that may occur in service as a result of corrosion, radiation effects, or instability of material. NCA-1130 gives further limitations to the rules of this Subsection.Careful application of this Section will help users to comply with applicable regulations within their jurisdictions, while achieving the operational, cost and safety benefits to be gained from the many industry best-practices detailed within these volumes.