SURGE TANK

A surge tank is an H2S service pressurized vessel for the storage of hydrocarbons after separation. Most tanks have a working pressure of 50 psi. Surge tanks are used to measure liquid flow rate and the combined shrinkage and meter factor. They are also used as a second stage separator, and hold a constant back-pressure by using an automatic pressure control valve on the gas outlet. Surge tanks are also used for storage.

Some tanks are split vertically giving two 50 bbl compartments. Others are a single 100 bbl tank. The tank should be fitted with high and low level alarms to prevent spillage

Features

Pressure retaining storage vessel to eliminate gas venting
Can be used as second stage separator
Single or twin compartment
Measures liquid flow rates, shrinkage and meter factors
Level monitoring by sight glass or magnetic indicators
By-pass manifold allows isolation from process flow
Access for internal inspection and maintenance
High and low level alarm in each compartment

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