Keywords: Puf.jpg Polyurethane foam used to fill a cable tray penetration At Browns Ferry Nuclear Power Plant as seal of this nature covered on both sides with two coats of a flame retardant paint was used instead of a bounded firestop The foamed plastic caught on fire through exposure to a candle The ensuing fire caused significant damage to the station This picture was taken in a power plant in Nova Scotia where it was subsequently removed and replaced with firestop mortar The Browns Ferry fire caused significant remedial work to be conducted with all Nuclear Regulatory Commission licensees Own 2007-06-18 Achim Hering Electrical conduit Firestops Cable trays Polyurethane foam Exposed flammable plastics Concrete blocks Home-made firestops Building code violations Nova Scotia Power Browns Ferry Nuclear Power Plant Flame retardants |