Tank Overfill Protection

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In 2021, CMA Systems were awarded a contract to install new independent fuel product tanks Automatic Overfill Protection Systems (AOPS).

The following elements of the Tank systems were installed as part of this project:

• Sensor inputs (level switch and interface unit)
• Logic solver (safety controller)
• Final elements (remotely actuated valve)

CMA Systems designed and configured the AOPS SIS (Safety Instrumented Systems) application software using Honeywell Designer Software package, necessary to meet the requirements of this specification.

Each AOPS monitors its respective product storage tank. On detection of an overfill event, the AOPS shall close the filling valve and alert personnel to the event.

The project included detailed functional safety software design and test documentation, to meet the requirements of the Client supplied Functional Safety Management Plan (FSMP), Safety Requirements Specification (SRS) and IEC61511.