Automated Overfill Protection System


High/low level events challenge the safe and reliable operation of terminals and tank farms. Liquid overfill, or high level, can result in vessel damage and/or release of hazardous chemicals to the environment. Low level can result in loss of suction to transfer pumps with the potential for pump damage and can pose significant hazards when floating roof tanks are used.

End users have often struggled with implementing the required Instrumented Safety Functions to prevent these events. The DIAMOND-SIS® is a stand alone SIS logic solver designed to receive level signals from switches or transmitters. When user-defined set points (high/low) are violated the DIAMOND-SIS® provides independent outputs to close isolation valve(s) and/or shut down transfer pumps.

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