SAFETY CONTROL IN REPAIR AT MAIN PIPELINES AND SYSTEM TO THIS END Russian patent published in 2013 - IPC F17D5/02 

FIELD: process engineering.

SUBSTANCE: main pipeline lengthy section is shut off to bleed gas. Presence or absence of condensate is defined and temporary holes are made to fit temporary union seals 6 therein in direction of valves 6 to be shut off. Air or inert gas is forced into device 5. Pipeline section between devices 5 is blown by nitrogen unless complete elimination of gas content inside the pipe. Temporary seals 6 are fitted via every hole in direction of repair jobs. Wireless inflammable continuous-operation transducers 1, 2 are fitted in every hole and at the point of repair. Wireless inflammable pressure gages 3, 4 measure operating pressure in said seals 5, 6 and overpressure between device 5 and shutoff valves 18. Data is loaded into software whereat concentration and pressure thresholds in device 5, 6 and overpressure in pipeline are used to monitor operating conditions. Gate 13 allows controlling self-organising network and data exchange with software installed at industrial notebook 8.

EFFECT: higher safety.

2 cl, 2 dwg