METHOD FOR EMPTYING GAS PIPELINE SECTION Russian patent published in 2023 - IPC F17D1/02 F17D3/08 

FIELD: pipeline transport.

SUBSTANCE: invention relates to pipeline gas transport and can be used to reduce losses of transported gas during emptying of a gas pipeline section before starting repair and restoration work. In the proposed method, before emptying the gas pipeline section being removed for repair, the shut-off device of the gas outlet pipeline is switched to the “closed” position. Then the pressure in the gas outlet pipeline is reduced by releasing gas to the consumer. After that, the section of the gas pipeline being taken out for repair is disconnected by switching the shut-off devices limiting it to the “closed” position. The shut-off device of the gas pipeline branch is switched to the “open” position and gas is transferred from the section of the gas pipeline being removed for repair to the gas pipeline branch. After filling the gas outlet pipeline and equalizing the pressure, switch its shut-off device to the “closed” position. Further emptying of residual gas from the section of the gas pipeline being removed for repair is carried out.

EFFECT: reduced losses of transported gas without the use of additional equipment when carrying out repair work on an inter-tap section of a gas pipeline that does not have an adjacent or non-adjacent previously repaired section, while limiting the timing of work in order to prevent disruption of gas supply to consumers.

1 cl, 1 dwg