Hydrostatic pressure is the ability of a liquid to resist the force of hydrostatic pressure. It is vital for system engineers, system designers and marine builders to comprehend the force of various static forces at various locations and also for operators to determine what pressure is the norm for a particular area. Most often, hydrostatic pressure testing is conducted on pipelines, control lines, water tanks, steam turbines, outfalls, septic systems and other similar installations. This equipment is essential for determining the amount of tension in any dynamic system that may be present.
Before performing the actual test pieces, one must make sure to prepare all test pieces, tools and environment properly. These include rubber gloves, masking material, dew point clothing, goggles, breathing apparatus and other materials to be used in the hydrostatic pressure testing machine. The test pieces should be assembled and leveled prior to placing them inside the machine to avoid disturbing the formation inside the plastic pipe. This procedure should be repeated until no more bubbles form in the fluid.
Once all the components are ready, it is time to start the testing. It is advisable to place the hydrostatic pressure testing machine at the highest level to ensure minimal disturbance. All controls should be left turned on and ensure there is no leakage of air. There are two types of machines: positive displacement and tensional pressure machines. Both machines require a source of power such as electric engines or water pressure from an external source.
The hydraulic pressure testing machine has two pipes: one to draw the fluid and another to release the fluid. The first pipe will draw all the water contained inside the pipe while the second pipe releases the fluid. The pipe used to release the fluid should be placed about one meter away from the first pipe and the distance should be kept increasing as the test piece progresses. When the first pipe starts leaking, the machine stops and should be restarted. If the first pipe is not leaking, the machine should be moved further away.
When the hydraulic pressure testing equipment begins to show signs of wear and tear, a single piece of the equipment should be replaced. The two hydraulic pipes on the bottom of the machine should be replaced with new ones. It is known that excess flow of water in any of these pipes could cause hydrostatic pressure buildup. This may cause the pipes to leak soon after the completion of the test.
To avoid hydrostatic pressure testing equipments vessel enlargement, it is advisable to install only single pipe. This means that when a new pipe is installed, the previous pipe is to be removed. It is also important to know that when a pipe is removed, the entire pump is then disconnected from the hydrostatic pressure testing machine and the machine should be shut down immediately. Any other pipes that were connected to the machine when it was in use should be disconnected as well.