High Quality Content by WIKIPEDIA articles! The Los Alfaques Disaster was a road accident and tanker explosion which occurred on 11 July 1978 in Alcanar, near Tarragona, in Spain. A tanker truck loaded with 23 tons of highly flammable liquified propylene experienced a fire and subsequent BLEVE (Boiling Liquid Expanding Vapor Explosion) while on the N-340 highway directly in front of the Los Alfaques campsite, located between the road and the sea. 217 people (including the driver) were killed and 200 more were severely burned.