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LOPC and PSI

A look at two safety indicators — loss of primary containment (LOPC) and process safety incidents (PSI) — and how Trinseo’s Tsing Yi’s site is embracing a spill-free culture.

Loss of Primary Containment (LOPC)

LOPC refers to spills and leaks of any material (excluding water) of greater than 100 pounds. We consider LOPCs a leading indicator for process safety incidents, and we track, monitor, investigate, and correct spill events to prevent harm to people or the environment.

Trinseo Loss of Primary Containment 2016

Process Safety Incidents (PSI)

For the second year in a row, Trinseo did not experience any PSI across the globe. Trinseo uses the same criteria as the American Chemistry Council, which classifies an incident as a PSI if a release from the process causes serious injury, a threat to environment, or significant equipment damage.

Trinseo Process Safety Incidents 2016

All Hands for Spill Prevention

Our Tsing Yi, Hong Kong site provides an exemplary model of how Trinseo employees around the world embrace a spill-free culture. In 2016, a team of workers established a “dry slab” program to reinforce every employee’s responsibility for recognizing and immediately reporting any signs of leakage, such as oil stains, dripping, or corroded pipes or flanges. With all employees actively participating, the site can address early signs of potential leakage even sooner, helping to reduce future incidents.