Loss of Primary Containment (LOPC)
LOPC refers to spills of chemicals or plastic pellets (excluding water and air). Such events are classified according to their severity as follows:
LOPC Category 2 – Spills greater than 1,000 pounds (excluding plastic pellets) or a smaller spill that causes injury, affects the community or is reported in the news media.
LOPC Category 3 – Spills greater than 100 pounds or exceeding 1,000 pounds for plastic pellets.
Figure 4 summarizes Styron’s LOPC incidents.
