Tank Truck Main Safety Facilities

There are generally mobile safety facilities on the tanker: mechanical breathing valve, hydraulic safety valve, flame arrester, measuring hole, manhole, lighting hole, oil inlet and outlet, foam generator, electrostatic grounding wire, lightning rod, ladder, railing. During the use of the tank, these safety facilities are required to be kept in good condition.

(1) Mechanical breathing valve

The mechanical breathing valve is an important accessory to protect the safety of oil storage in the oil tank. It is installed on the top plate of the fuel tank and consists of a pressure valve and a vacuum valve. Its function is to maintain the tightness of the oil tank under normal conditions and reduce the evaporation loss of oil to a certain extent. When necessary, it can automatically ventilate, adjust and balance the internal and external pressure of the fuel tank, and protect the fuel tank.

(2) Hydraulic safety valve

The hydraulic safety valve is another important accessory installed on the top of the fuel tank to protect the safety of the fuel tank. When the mechanical breathing valve fails, the hydraulic safety valve can replace the mechanical breathing valve to exhaust or inhale. The oil tank is equipped with a mechanical breathing valve and a hydraulic safety valve to improve safety.

(3) Flame arrester

A flame arrester is a fire safety device on the fuel tank. It is located in the lower part of the mechanical breather valve on the tank top. It looks like a box filled with layers of wire mesh or corrugated cardboard with a certain aperture of copper, aluminum (or other heat-resistant metal). Once the flame enters the breathing valve, the wire mesh or corrugated plate in the flame arrester quickly absorbs the heat of the burning gas, thereby extinguishing the flame and preventing the flame from entering the tank.

(4) Measuring hole

The measuring hole, also known as the oil hole, is a special accessory used to measure the oil level in the tank and take oil samples. One is set at the top of each oil tank, most of which are located near the oil tank ladder platform. The measuring hole is 150 ram in diameter and is equipped with a sealing hole cover and elastic bolts. To prevent sparks with the iron when the hole cover is closed, an oil-resistant rubber gasket or soft metal (copper or aluminum) is embedded in the sealing groove under the hole cover.

(5) Manhole

Manholes for non-metallic oil tanks are set on the top of the tank. The manhole for the metal oil tank is located on the bottom plate of the tank wall. Most are round holes with a diameter of 600mm. They are used for tank cleaning or maintenance personnel to enter and exit the tank. They are also called doors. Manholes can be used for lighting and ventilation when inspecting and cleaning tanks.

(6) Lighting hole

The light hole is also called the light hole. The lighting hole of the fuel tank is set at the top of the fuel tank, which is generally a circular hole with a diameter of 500mm. Usually the perforated cover ring is tightly sealed with bolts. Used for lighting, ventilation and exhaust when cleaning and repairing fuel tanks.

(7) Oil inlet and outlet pipes

The inlet and outlet pipes are the only way for oil to get in and out of the tank. The inlet and outlet pipes of the fuel tank are connected from the lower part of the fuel tank wall.

(8) Foam generator

The air foam generator, also known as the air foam chamber, is a fire extinguishing device installed on the tank wall of the uppermost ring plate of the fuel tank, which is used to spray foam when the fuel tank is extinguished. The spout seals the air in the tank with a thin glass sheet (or diaphragm) to prevent oil or gas in the tank from entering the foam chamber or fire piping.

(9) Electrostatic ground wire

The electrostatic grounding wire is a protective device that introduces the electrostatic charge accumulated in various parts of the fuel tank and the charge generated by the lightning induction effect into the ground, avoids spark discharge, prevents the fuel tank from explosion and fire, and protects the safety of the fuel tank.

(10) Lightning Rod

The lightning rod is a lightning protection device used to prevent the fuel tank from being directly struck by lightning. The tip of the lightning rod installed directly on the fuel tank must be at least 5m higher than the breathing valve, and the highest point of the fuel tank must be within the protection range of the lightning rod. If it is the fuel tank area of one or more groups of fuel tanks, single or multiple single lightning rods can be calculated and set according to the specific location of the fuel tank, so that all fuel tanks in the fuel tank area are protected by lightning protection devices within the range.

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