Static Head Test Procedure

A static head test procedure is a means of testing an above ground bulk storage tank for product holding capability.  In preparation for a static head test, the tank should be filled to maximum safe fill height with water or product, a minimum of 24 hours prior to testing to allow for stabilization.  The product lines should have the valves closed and preferably pan-planked.  The exterior of the tank, water draws, valves, piping and tell-talls should be inspected for indication of product/water.

The tank is gauged, following the settling periods, on suitable intervals.  The gauging should be performed per API Standards.  All data should be recorded, including gauge height, product and air temperature, and tank/site data.  An excessive change in product temperature will invalidate the test.  The loss of product during the testing interval should be investigated by acoustic emission testing or interval inspection per API.

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