Chemical plant fire in Rouen: investigation begins Investigations begin at the site of the Lubrizol chemical plant fire in Rouen, where 130 complaints have already been filed by residents, companies and municipalities affected by the consequences of the blaze. Lubrizol are relying on video surveillance and witnesses to back up their "belief" the fire started outside the site, although the company has already committed to participating in a compensationo scheme for those affected. IMAGES