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本书为美国全国锅炉压力容器检验师协会(NB)制订的检查规范(Inspection code)。它是美国对锅炉压力容器进行管理的两大规范之一。另一规范是美国机械工程师学会制订的锅炉压力容器建造规范(简称ASME锅炉规范)。ASME规范是控制建造锅炉、压力容器,在设计、制造、检查等方面的安全规程汇编。而本规范则是控制这些设备在安装完毕投入运行后能继续安全使用的检查规程汇编。也就是说这些设备在第一次安装完毕后未投入运行以
This book is the inspection code for the National Association of Boiler and Pressure Vessel Inspectors (NB). It is one of the two major US regulations governing boiler pressure vessels. Another specification is the United States Institute of Mechanical Engineers to develop the boiler pressure vessel construction specification (ASME Boiler Specification). The ASME Code is a compilation of safety regulations governing the construction of boilers, pressure vessels, in the design, manufacture, inspection, etc. This Code is to control the assembly of these devices in operation after installation can continue to safely use the compilation of inspection procedures. This means that these devices have not been put into operation after the first installation