Light Transmission hole - Tank Opening Accessories - Hi-sea

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Light Transmission hole

Light Transmission hole

Description

The light transmission hole is set on the roof of the tank, which is used for lighting and ventilation during oil tank installation and cleaning.

Application

The daylighting of oil tank is set on the roof of the tank. Generally, it is a circular hole with a diameter of 500 mm.It is used for daylighting, ventilation and exhaust when cleaning and overhauling oil tanks.In addition, when the operating device of the safety valve fails, it can also be used to open the safety valve with a steel cable attached to the light transmission hole.

When only one light hole is set on the roof, it should be on the roof above the inlet and outlet pipelines.When two light transmission holes are provided, the light transmission holes and manholes shall be distributed symmetrically along the circumference as far as possible for lighting and ventilation, but at least one light transmission hole shall be set near the roof platform.The outer edge of the light transmission hole shall be 800~1000 mm away from the tank wall.The upper part of the light transmitting hole is connected with the vent hole, which is normally closed by the eyelet blind plate.When cleaning and repairing the oil tank, the eyelet blind plate is opened and the vent hole is connected, so that mechanical ventilation can be carried out in the tank.


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