制冷管道保温技术交底-北京建工集团.doc

  1  范围
    本工艺标准适用于空调系统中制冷管道的保温工程。
    2  施工准备
    2.1  材料及主要机具：
    2.1.1  保温材料应符合设计规定并具有制造厂合格证明或检验报告。
    2.1.2  保温材料有聚氨脂硬质（软质）泡沫塑料管壳、聚苯乙烯硬质（软质）泡沫塑料管壳、岩棉管壳等。以上材质应导热系数小，具有一定的强度能承受来自内侧和外侧的水湿或气体渗透，不含有腐蚀性的物质，不燃或不易燃烧，便于施工。
    2.1.3  保温材料在贮存、运输、现场保管过程中应不受潮湿及机械损伤。        2.1.4  手电钻、刀锯、布剪子、克丝钳、改锥、腻子刀、油刷子、抹子、小桶、弯钩等。
    2.2  作业条件：
    2.2.1  难燃材料必须对其耐燃性能进行验证，合格后方能使用。
    2.2.2  管道保温层施工必须在系统压力试验检漏合格，防腐处理结束后进行。
    2.2.3  场地应清洁干净，有良好的照明设施。冬、雨期施工应有防冻防雨雪措施。
    2.2.4  管道支吊架处的不衬垫缺损或漏装的应补齐。仪表接管部件等均已安装完毕。
    2.2.5  应有施工员的书面技术、质量、安全交底。保温前应进行隐检。
    3  操作工艺
    3.1  工艺流程：
 隐检→一般按绝热层→防潮层→保护层 的顺序施工→检验。
1 Scope
    This technology is applicable to air conditioning systems refrigeration pipe insulation works.
    2 construction preparation
    2.1 Materials and main equipment:
    2.1.1 Insulation materials shall meet the design requirements and have the factory certification or inspection reports.
    2.1.2 Rigid polyurethane insulation materials are (soft) foam shell, polystyrene rigid (soft) foam shell, such as rock wool pipe shell. Material should be smaller than the thermal conductivity, has a certain strength to withstand water wet from the inside and the outside or gas permeability, does not contain corrosive substances, flammable or nonflammable and easy construction.
    2.1.3 heat insulating material in storage, transportation, site storage process should be free from moisture and mechanical damage. 2.1.4 hand drill, saw and knife, cloth scissors, Cutting pliers, screwdrivers, putty knives, oil brush, trowel, small buckets, hooks and so on.
    2.2 Operating conditions:
    2.2.1 of its flame retardant properties of materials must be validated, certified before use.
    2.2.2 Construction of pipe insulation must be qualified in the leak detection system, pressure test, after the end of preservative treatment.
    2.2.3 The site should be clean, have good lighting. Winter, freezing rain on the construction should be measures to prevent rain and snow.
    2.2.4 Pipe Supports Office cushion defect or leak is not installed should be padded. To take over parts of such instruments have been installed.
    2.2.5 Construction workers should have a written technology, quality, safety cards on the table. Insulation should be hidden before the inspection.
    3 Operation Process
    3.1 Process:
 Implicit review → General → damp insulation layer by layer of protection order → Construction → test.