Hot tapping,   or pressure tapping, is the method of making a connection to existing piping or pressure vessels without the interrupting or emptying of that section of pipe or vessel. This means that a pipe or tank can continue to be in operation whilst maintenance or modifications are being done to it. The process is also used to drain off pressurized casing fluids and add test points or various sensors such as temperature and pressure. A hot tap saddle, service saddle or welded threadolet, valve installed, assembly is pressure tested and hot tap machine attached. Valve opened, hot tap completed, coupon or cut portion retained by latches on pilot drill. Pressure is contained within the hot tapping machine.
Introduction to Hot Tapping and Line Stopping
Pin on TAP TUBE
Hot Taps or Hot Tapping is the ability to safely tie into a pressurized system, by drilling or cutting, while it is on stream and under pressure. Mechanical fittings may be used for making hot taps on pipelines and mains provided they are designed for the operating pressure of the pipeline or main, and are suitable for the purpose. There are many reasons to made a Hot Tap. While is preferred to install nozzles during a turnaround, installing a nozzle with equipment in operation is sometimes advantageous, especially if it averts a costly shut down. For a hot tap, there are three key components necessary to safely drill into a pipe; the fitting, the valve, and the hot tap machine.
Myanmar (Burma): reformatory caning in yard, date unknown. Nepal: Gurkha trainees lightly caned en masse2016 (also video clip) Poland: Polish soldiers flogging a peasant in Belarus, 1920. Russia: prison flogging with the plet, 1890 (two views) Russia: prison official holding a plet, 1891. Russia: another flogging with the plet, c. Singapore: military detainee receiving a caning in the army barracks.
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