The plant, one of seven in Spain, went into service in 1972 at Vandellos, a coastal town in Tarragona Province 90 miles south of Barcelona, Spain's second-largest city.
In 1978, 216 people were killed when a tanker truck overfilled with propylene gas exploded on a coastal highway south of Tarragona, Spain, setting off a fireball that devastated a nearby campsite.