The UTSP-0100 Concrete Pipe Testing Machine is designed to complete concrete pipe testing on drain and sewer pipes, reinforced polyethylene pipes, polyethylene tubing, precast cones, pre-cast joints. The machine is suitable for pipes having a length of more than 3000 mm. When installed, the machine is controlled by a computerised system. The system contains a number of instruments that are sensitive to changes in temperature and pressure inside the pipes. It also has a number of control panels and keypads that enable the operator to read test results and initiate appropriate action.
In plumbing applications, the pipe testing machines are useful in detecting the existence of corrosion, internal stress cracks or any other mechanical stress cracks in solid materials like pipes. In addition, this machine helps in identifying the presence of air bubbles in solid materials, which are caused due to deformation of the material while it is under increasing pressure. If the test results indicate the presence of air bubbles, then it is an indication of crack stress cracking in solid materials.
The machine produces two copies of the final test result: one for the non-corrosive properties and one for the hydrostatic test pressure properties. The first one contains a list of test points that are to be tested; the second one has an interpretation of those test points that are based on the legal analysis conducted by the USPDSI. The second copy of the final result is supplied to the manufacturer, who can conduct final quality inspection and rectification before manufacturing the pipe. The manufacturer can use the second copy of the test result as a model for preparing final inspection reports for final analysis.
The hydrostatic test pipe results are obtained by using controlled vent valve means. The test pipe is placed in the system and connected to the machine with a hose. The valve is opened at a predetermined pressure; this causes the measured hydrostatic pressure in the pipe to rise. This process is repeated at least two times to achieve better accuracy. The manual measuring device is used to measure the hydrostatic pressure.
For measuring the dynamic resistance, three-diameters are used. One-diameter refers to a pipe which is less than one inch in diameter; this is one of the standards recommended by OSHA for measuring pipe dynamic resistance. The machine is set to measure the static pressure in the pipes; this equipment has a measuring cylinder and a piston. The cylinder is placed at one end of the pipe; the piston moves up and down the cylinder. The distance between the piston and the inner wall of the cylinder is measured as the dynamic resistance. There is one indicator provided on the control panel for controlling the flow of air through the pipe.
The measurement of water pressure is usually performed on the main supply pipe of the system. To do this, the machine is set to provide a variable load on the pipe by varying the hydraulic power pack, which is located at the service pump. The machine measures the pressure change that occurs with the decrease or increase in the load on the pipe. To get an accurate reading, more than one measurement should be taken at different points along the length of the pipe.