" />Geomembrane on-site inspection method
1. Air inflation method
Geomembrane welding is double strips, with a cavity of about 10mm left between the two strips. Seal both ends of the section to be tested, insert an air needle. Inflate to 0.15MPa～0.20MPa, observe the vacuum gauge for 5 minutes. If the air pressure does not drop, it indicates no leakage and the weld is qualified. Otherwise, find the cause and repair in time.
2. Water filling method
Welding is double strips, with a cavity of about 10mm left between the two strips. Seal one end of the section to be tested, and insert a water needle at the other end. Fill with water to 0.05MPa～0.20MPa. If no water leaks from the cavity, it indicates the weld is qualified. Otherwise, find the cause and repair in time. Advantages of water filling method
(1) Good intuitiveness, convenient for timely problem discovery.
(2) Simple equipment and simple operation, can be inspected and spot-checked anytime and anywhere on site. In view of the above advantages, this project uses the water filling method to inspect weld quality. After self-inspection is qualified, submit to the supervision unit, quality supervision department and Party A for joint sampling inspection, implement section-by-section certification and visa. For joints with virtual welding and missing welding, supplementary welding should be carried out in time, and water filling inspection should be performed on the supplementary welding parts until the acceptance is qualified before the next process can be carried out.
English