METHOD FOR SAFE INSTALLATION AND REMOVAL OF A TEMPORARY SEALING DEVICE FROM THE GAS PIPELINE CAVITY Russian patent published in 2022 - IPC F16L55/18 

FIELD: pipeline equipment.

SUBSTANCE: invention relates to the field of operation of gas pipeline transport and is intended for the safe installation and removal of a temporary sealing device from the cavity of a gas pipeline as part of reconstruction, repair and construction work. The expected result in the proposed method is achieved by using a U-shaped cross-section sealer made of a rubber material. The width of the seat of the sealer is selected in accordance with the thickness of the pipe wall. The sealer is installed along the entire circumference of the process hole, closing the lower and upper edges of the process hole. Then, a temporary sealing device is installed through the process hole of the pipeline. At the end of the firing work, a temporary sealing device is removed from the cavity of the gas pipeline, after which the sealer is removed.

EFFECT: safe installation and removal of a temporary sealing device from the gas pipeline cavity, simplification of the process of installing and removing a temporary sealing device from the gas pipeline cavity through the process hole, as well as extending the service life within the framework of reconstruction, repair and construction works by preventing damage to the temporary sealing device on the sharp edges of the process hole.

1 cl, 2 dwg