1 总则
1.1 火力发电厂的水汽化学监督是保证发电设备安全、经济、稳定运行的重要环节 之一。为适应高参数、大容量火电机组迅速发展的需要，特制订本导则。
1.2 为了防止水汽质量劣化引起设备发生事故，必须贯彻"预防为主、质量第一" 的方针，认真做好水汽化学监督全过程的质量管理。新建火电厂从水源选择，水处 理系统设计，设备和材料的选型，安装和调试，直至设备运行、检修和停用的各个 阶段都应坚持质量标准，以保证各项水汽质量100%符合本导则规定的标准值，保 证热力设备不因腐蚀、结垢、积盐而发生事故。
1.3 各电管(电力)局总工程师领导本局化学监督全过程的质量管理工作。局总工程 师和化学专业工程师应经常了解和掌握全局化学监督情况，协调和落实与化学监督 有关的各项工作，总结经验，不断提高化学监督水平。
1.4 火力发电厂基建阶段的化学监督工作应由电力建设公司(局)负责组织及实施。 各项监督工作必须纳入工程进度，其执行情况应作为考核工程质量的依据之一。
1.5 火力发电厂总工程师应组织和领导汽轮机、锅炉、电气、热控、化学专业人员 和运行值长共同研究热力设备的腐蚀、结垢等问题，分析原因、明确分工、落实措 施，不断提高设备健康水平，防止发生事故。
1.6 要做好火力发电厂水汽化学监督工作，就必须充分发挥化学专责人员的监督职 能。化学专责人员应及时、准确地检测全厂水汽质量和热力设备的腐蚀、结垢、积 盐程度。发现异常时，应向电厂领导书面报告情况、分析原因和提出建议，以防患 于未然。化学专责人员应在总工程师的领导下，督促、检查有关部门按期 实现防腐、防垢措施，使水汽质量恢复正常。必要时，化学专责人员的书面报告 可同时抄报电管(电力)局。
1.7 本导则引用标准如下：
    SD246-88      化学监督制度
    GB12145-89    火力发电机组及蒸汽动力设备水汽质量标准
    SD163-85      火力发电厂水汽质量标准
    DL5000-94     火力发电厂设计规程
    SDGJ2-85      火力发电厂化学水处理设计技术规定
    SDJ68-84       电力基本建设火电设备维护保管规程
    DLJ58-81       电力建设施工及验收技术规范(火力发电厂化学篇)
    SDJJS03-88     电力基本建设热力设备化学监督导则
    SD116-84       火力发电厂凝汽器管选材导则
    SD135-86       火力发电厂锅炉化学清洗导则
    SD223-87       火力发电厂停(备)用热力设备防锈蚀导则
1.8 本导则重申国家和行业标准在水汽化学监督方面的重点内容，并在总结国内外经验的基础上进行了若干补充和修改，是热力设备水汽化学监督全过程质量管理的 指导性技术规定。
1.9 本导则主要适用于超高压125～200MW机组及亚临界压力
1 General
1.1 The power plant's steam generation equipment, chemical monitoring is to ensure the security, economic, and stable operation of one of the important part. To meet the high-parameter, large-capacity thermal power needs of rapid development, especially development of the guidelines.
1.2 In order to prevent quality deterioration caused by water vapor equipment accidents, we must implement the "prevention first, quality first" approach, do a good job monitoring the whole process of chemical vapor quality management. New thermal power plant selection from the water, water treatment system design, equipment and materials selection, installation and commissioning, up to equipment operation, maintenance and deactivation should adhere to quality standards at all stages to ensure the quality of 100% of the water vapor line This guide provides the standard value, ensure that equipment is not due to thermal corrosion, fouling, salt accumulation and accidents.
1.3 The power control (power) the leadership of Council Chief Engineer Chemical monitoring the whole process of quality management. Chief Engineer and chemical professional engineer should always understand and grasp the overall situation of the chemical monitoring, coordination and implementation of the chemical monitoring of the relevant work experiences, and continuously improve the level of the chemical monitoring.
1.4 Thermal Power Plant construction period of the chemical monitoring should be undertaken by Power Construction Company (Board) is responsible for organization and implementation. The supervision must be included in the progress of its implementation should be used as a basis for assessing the quality of works.
1.5 Thermal Power Plant Chief Engineer shall organize and lead steam turbine, boiler, electrical, thermal control, chemical professionals and long-run value of thermal equipment to study the corrosion and scaling problems, analyze the causes, clear division of labor, to implement measures to continuously improve the equipment health, to prevent accidents.
1.6 Chemical vapor power plant to supervise the work well, we must give full play to the chemical responsible for personnel oversight. Chemical personnel should be responsible for timely and accurate detection of vapor quality and heat the whole factory equipment corrosion, fouling, salt accumulation level. Abnormal, the leading power plant should be a written report, analyze the causes and make recommendations as a preventive measure. Chemistry should be a dedicated team under the leadership of Chief Engineer, supervision, inspection departments to realize such corrosion, scale measures, so that the quality of water vapor back to normal. When necessary, the chemical responsible for a written staff report can also copy to electronic tubes (Electricity) Board.
1.7 The guidelines reference the following criteria:
    SD246-88 chemical monitoring system
    GB12145-89 generating unit and steam power equipment quality standards for water vapor
    SD163-85 quality standards for power plant steam
    DL5000-94 power plant design rules
    SDGJ2-85 power plant design provides chemical water treatment
    SDJ68-84 thermal power electric power infrastructure equipment maintenance storage procedures
    DLJ58-81 Power Construction and acceptance of technical specifications (thermal power plant of chemistry)
    SDJJS03-88 thermal power infrastructure equipment chemical monitoring guidelines
    SD116-84 power plant condenser tube material selection guidelines
    SD135-86 Thermal Power Plant Boiler Chemical Cleaning of
    SD223-87 Thermal Power Plant Shutdown () Anti-corrosion equipment using heat Guide
1.8 The guidelines reiterate the national and industry standards in the supervision of the key chemical vapor content, and in summing up the experience at home and abroad based on a number of additions and modifications are thermal chemical vapor monitoring equipment, the quality of the whole process guiding the management of technical requirements.
1.9 This guide is primarily applicable to high pressure 125 ~ 200MW units and sub-critical pressure