请注意:本出版物的格式为活页本。如果您想在订单中添加粘合剂，请阅读本页。第十二节提供了构成通过公路、铁路、航空或水运输危险货物的压力容器的建造和持续服务要求的规则。建造是一个包罗万象的术语，包括材料、设计、制造、检查、检验、测试、认证，和过压保护。持续使用是一个包罗万象的术语，指的是对已投入使用的运输罐进行检查、测试、维修、改造和重新认证。术语压力容器是指由本节几何范围定义的压力边界，包括但不限于壳体、封头和开口。术语箱是指模态附录中涵盖的压力容器、附件和附加部件。 本节规则特别适用于设计压力适用于运输方式且体积大于450 L（120 gal）的危险货物运输压力容器，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.Section XII provides rules that constitute requirements for construction and continued service of pressure vessels for the transportation of dangerous goods via highway, rail, air, or water.Constructionis an all-inclusive term comprising materials, design, fabrication, examination, inspection, testing, certification, and over-pressure protection.Continued serviceis an all-inclusive term referring to inspection, testing, repair, alteration, and recertification of a transport tank that has been in service. The termpressure vesselrefers to the pressure boundary defined by the geometric scope of this Section and includes, but is not limited to, the shell, heads, and openings. The termtankrefers to the pressure vessel, appurtenances, and additional components that are covered by the Modal Appendices.The rules of this Section apply specifically to pressure vessels intended for transporting dangerous goods with design pressures appropriate for the transportation mode and volumes greater than 450 L (120 gal).Pressures normally incident to transportation, including loading and unloading operations, are to be considered.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.