Burst of a tank due to accidental formation of hydrogen

A tank received, after a negative reactivity test with the bottom supernatant of the tank, 20 m³ of methyl hydro-dichloro-silane, then 24 m³ of a mixture of oil and tar (negative reactivity test) and 10 m³ of a Tar mixture (no reactivity test). Simultaneously, the operator fed an oven by pumping into the tank. A reaction developed 24 hours after these discharges: the filters clog up, the tank overflew, then the reaction stops. The management stated that there was no danger; 15 days later a sudden release of hydrogen occurred with a projection of solid polymer within a radius of 25 m. The tank was found inflated and disengaged from its base, broken anchors.

delayed chemical reaction forming gaseous hydrogen. The fact that the management stated the absence of any risk calls for a ROOT CAUSE related to inadequate management of risk.

chemicals storage tank

Solid polymers were projected within a radius of 25 m. The tank was found inflated and disengaged from its base, its anchors broken.