Level Instruments for Tank Overfill Protection

Tank overfill incidents in recent years have resulted in loss of life and billions of dollars in damages to petroleum facilities worldwide. More common are minor spills that cause significant environmental impact and result in millions of dollars in clean-up fees and environmental agency fines.

The American Petroleum Institute’s (API) Recommended Practice (RP) 2350, the most widely accepted guideline for overfill protection of petroleum storage tanks, was revised to the fourth edition and published in May 2012. It combines the prescriptive standards of RP 2350 with the functional safety standards of Safety Instrumented Systems (SIS) as described in IEC 61511.

The application of level instrumentation as one part of a comprehensive Overfill Prevention Process (OPP) is explained and described in the Magnetrol application guide "Level Instruments for Tank Overfill Protection".