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Hydraustatic Test

Hydrostatic testing is carried out to detect power and leakage leaks in pressurized vessels such as pipelines, sanitary installations, gas cylinders, boilers, and fuel tanks. The test is done by immersing the pressure receptacles completely in water and pressurizing the design pressure limit up to 1.5 times. These containers are then held in the water for a period of time to visually inspect the leaks. Fluorescent dyes are applied to understand the source of cracks and leaks. Permanent deformation of the container is examined to measure the resistance to pressure.

Fire extinguishers are filled with pressurized containers. Since the leak will prevent fire extinguisher from performing the required performance in case of fire, a hydrostatic test must be carried out.

Hydrostatic Test Methods

There are three hydrostatic testing techniques for testing small pressure vessels and cylinders. The necessary equipment for the implementation of these methods is provided to our customers at appropriate capacities.

WATER JACKET METHOD

Basınçlı kap, su ile doldurulmuş kapalı bi rodada basın altında bekletilir. Daha sonra kapın üzerindeki basınç kaldırılır ve kap orjinal boyutlarına döner. Toplam genişleme ile kalıcı genişleme arasındaki farkın fazla olması durumunda kap kullanılmaz.

DIRECT EXPANSION METHOD

Pressure is applied by filling the cylinder with a certain amount of water. When the pressure is removed, the amount of water exiting the cylinder is measured. Amount of water in the vessel, test pressure and the amount of water released are important parameters in this method.

PROOF PRESSURE METHOD

Impermeability of the container under pressure and other weaknesses are measured visually.

Hydrostatic Testing Equipment

The following describes the main equipment that should be on the hydrostatic test line:

BLIND FLANGE

Used to close the openings of pressure vessels.

PUMP

Most pneumatic pumps are used. It is necessary to provide pressure to the system.

PRESSURE GAUGE

Used to measure the total pressure. There should be 2 units in the system, one of which is original and the other is spare. The pressures of these gauges must be higher than the maximum system pressure, but should not be greater than 200% of the maximum system pressure.

RELIEF VALVES

It is used to protect the system and components from excessive pressure. The maximum system pressure should be pressure-resistant above 135%.

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