CUSTOM MANUFACTURER PASSIVE FIRE BARRIERS UTILIZING DURASTEEL FIRE RATED SYSTEMS & BLAST RESISTANT SHEET SYSTEMS ARE TESTED AND LISTED TO STANDARDS AND/OR GUIDELINES FROM 1)FACTORY MUTUAL INSURERS 2)UL/ULC 3)LLOYDS OF LONDON 4)DET NORSKE VERITAS PRODUCTS INCLUDE : BLAST & FIRE WALLS AND DOORS CABLE TRAY OVERLAYS TRANSFORMER BARRIERS FIRE RATED & BLAST RESISTANT DUCTING FUME EXHAUST SYSTEMS SUITABLE FOR:OFFSHORE OIL & GAS, PETRO-CHEMICAL FACILITIES, HOSPITALS, NUCLEAR AND HYDRO POWER UTILITIES, MINING, MANUFACTURING PLANTS RELEVANT SYSTEMS ARE TESTED TO THE HYDROCARBON TIME TEMPERATURE CURVE.