工程档案是指在工程项目城市规划、建设及管理活动中直接形成的,对国家和社会具有保存价值的文字、图纸、图表、声像等各种载体的文件材料,包括工程项目的提出、调研、可行性研究、评估、决策、计划、勘测、设计、施工、调试、生产准备、竣工、试生产(使用)等工作活动中形成的文字材料、图纸、图表、计算 Project files refer to the documents and materials directly formed in the urban planning, construction and management activities of the project and have various valuable carriers such as texts, drawings, diagrams, audio and video, etc. for the country and society, including the proposal and investigation of construction projects , Feasibility studies, assessment, decision-making, planning, survey, design, construction, commissioning, production preparation, completion, trial production (use) and other work activities formed in the text materials, drawings, charts, calculations