本推荐规程规定了300 MW至600 MW煤粉锅炉及其主要辅助设备在正常和紧急情况下的启动、正常运行、停机、日常运行和维护的原则和程序。本推荐规程适用于300 MW至600 MW煤粉锅炉，具有平衡通风，包括自然循环和强制循环；亚临界和超临界直流锅炉；切向燃烧锅炉；对置燃烧锅炉；等等对于特定应用，用户需要根据本推荐规程编制额外的文件，以涵盖详细的程序或通常所谓的？操作码，a？以及制造商的说明和从正常操作实践中获得的经验。

This recommended practice defines the principles and procedures for start-up, normal operation, shutdown, daily operation, and maintenance during normal and emergency conditions for a 300 MW to 600 MW pulverized coal-fired boiler and its main auxiliary equipment. This recommended practice applies to 300 MW to 600 MW pulverized coal-fired boilers with a balanced draft, including natural circulation and forced circulation; subcritical and supercritical once-through boilers; tangential-fired boilers; opposed-fired boilers; and so on. For specific applications, an additional document needs to be formulated by users based on this recommended practice to cover detailed procedures or normally so-called "operation code," together with the instructions of manufacturers and the experiences derived from normal operation practice.