What is a hydrostatic test?

A hydrostatic test is a test that measures strength or structural integrity of pressure containers that hold liquid or gas. Containers that can be tested include boilers, gas cylinders or pipes in the water system. The test ensures that there are no leaks in the container and that it is structurally safe to operate.

For the hydrostatic test, the container is usually placed in a steel chamber, which is filled with water at normal pressure. Subsequently, pressure water is pumped into the tested container. The container expands, pulls water out of the steel chamber, and then downloads as soon as the pressure is released and forces the water to return to the steel chamber. The amount of water that leaves and returns to the steel chamber is used to determine whether the tested container passes or fails by a hydrostatic test.

fire extinguishers are usually subject to a hydrostatic test to ensure that they are safe. Over time there is a cover that pays a repellent fire can weaken and lose integrity, což can lead to a failure or even a rupture. The cylinder, hose, shell and assembly are tested pressure to check leaks.

Before placing the fire extinguisher cylinder in the hydrostatic chamber, the valve is removed and visual interior control. Symptoms of corrosion and structural defects can cause cylinder failure under pressure conditions. If everything seems normal, a hydrostatic test is initiated.

The high -pressure water pipe is attached to the cylinder, which is then placed in a steel chamber filled with water. The water is pumped into the cylinder. As the water pressure increases in the cylinder, the walls of the cylinder began to expand and forced the water in the chamber to move. Water usually leaves the chamber through a small drain and collected in buretue, or laboratory measuring equipment located on the outside of the chamber. Once the pressure is reduced in the cylinder, the walls of the cylinder contract that causes the water in Byret to return to the chamber.

Bureta provides measuring the amount of water that has been pushed out of the chamber. It also measures the amount of water that has returned to the chamber. Usually, if the amount of water remaining in Byret is greater than ten percent of the amount that was originally pushed out of the chamber, then the tested cylinder failed a hydrostatic test.