The system, main equipment, piping and so on should adopt the fixed type heat preservation structure, the flange, the valve and so on should adopt the removable heat preservation structure. What is called the fixed heat preservation structure?,
The removable insulation structure means the insulation used in the place where it is often disassembled and maintained, and can be disassembled and overhauled as a whole. After the overhaul, the whole insulation layer can be conveniently and directly mounted. Fixed type thermal insulation structure is insulation pipes, some regular maintenance equipment, the thermal insulation is fixed on the equipment, only the equipment overhaul, all the damage to the insulating layer to open, the repeated use of the insulation layer can not.
See the construction of the 5.11 removable insulation in GB50126-2008, and then follow the specifications.
Piping insulation shall be installed in all accessories (including instrument test tubes); piping requiring steam purging, strength test or tightness test shall be carried out before it is qualified. Before the construction, the outer surface of the pipe shall be kept clean and dry, and the pipeline painting shall be qualified after acceptance."Specific construction should be in accordance with the relevant construction specifications!
