DC Inverter Air
B. The welding area, flared area or flan ge area shall be subject to the heat‐insulation treatment after
completing the leakage d etection.
2) He at Insulation of Non‐weld ed or Non‐c onnected Po sitions
In order to facilitate the construction, please use t he heat insulation materials to deal with the pipes
b efore their laying, and meanwhile, a certain length at two ends of the pipe shall be res erved not
for the insulation treatment for purpose o f welding an d leakage de tection after completing the
laying of the pipe.
Gas pipe a nd liquid pip e shall not be
Only for heat insulati on of gas pip e
Heat ins ulation for gas/liquid pip es
put together for heat in sulation
3) Heat Insulation of Welding Area, Flare A rea or Flange Area
A. The heat in sulation of welding area, flare area or flange area shall be carried out after completing
the leakage detection of pipes.
B. There shall be no gap btween the junction position of attached insulation materials and the locally
prepared insulation materials.
4) Wrapping Trea tment
75/ 113
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