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Conquest FireSpray Fire Rated Ductwork Warren Michigan Manufacturing Capabilities • • • • Two fabrication facilities (130,000 + sq. ft.) History of large projects (Ohio State Univ.) Full 3D modeling & project management staff All styles of duct (spiral, flat oval, rectangular, welded) Enclosure by Design: • In the USA the predominate method for fire protection is subdivided into categories: • Compartments • Detection • Alarm/Notification • Evacuation • Sprinklers • Smoke Removal Enclosure by Design: • What about smoke removal? • Are we engineering a smoke removal system tested for that use? • Or are we utilizing the existing systems to perform a function they are not tested to provide? Enclosure by Design: • According to SMACNA and the corresponding British standard ventilation and exhaust ductwork have no tested fire resistive standard in their respective designs. • That means the SMACNA tables are not designed to include a fire rating. • HVAC systems with openings will introduce hot gasses into the duct that is not designed to handle. What is Fire Rated Ductwork • Search of 2009 IBC and 2009 IMC • No mention in the code of Fire Resistive Ductwork • How do we handle Fire Resistive Ductwork? Enclosure by Design: • There is no USA (ASTM) test today that recognizes fire rated duct systems. • There is however an International Standard ISO 6944 (1985 and 2008) . ISO 6944 • ISO 6944 • Test Fire Resistive performance of ductwork. • Test follows time temperature curve in E119 • Developed in EU for Fire Duct and Smoke Extraction Ductwork. ISO 6944 • ISO 6944 • Tests Ductwork for 2 conditions • Fire inside a duct Type B • Fire outside a duct Type A • Conditions of the Test • Integrity • Stability • Insulation Type A and Type B Duct (Wrap is only rated for Type A) THE DUCT IS THE ENCLOSURE Alternate Systems Drywall Enclosures • Conventional Shaft Riser with 2 hour Rated Gypsum Enclosure (3 layers) • Fire dampers must be in wall Alt. Wrap Enclosures Firewrap Insulated Duct • Insulated Fire Wrap • 1 and 2 hr protection • Type A only (fire outside the duct) • Upgraded Duct • Upgraded Supports • Multiple Trades Fire Rated Duct Tested and Classified by UL & ETL Classified for up to 2 & 4 hours as a smoke and fire duct (ISO-6944) and complies with NFPA 96 Fire Rated Ductwork • US Codes are evolving to accept a duct as an enclosure. • ASTM E2816-11 Metallic Fire Resistive Duct Enclosures. • Passed Committee July 2011 • ICC Evaluation Services • Acceptance Criteria November 2011 Fire Rated Ductwork & Metalic Enclosure • Test Procedure based on ISO 6944 (2008) standard • Tests Ductwork for both conditions • Horizontal Condition A, C • Vertical Condition B, D • Test for fire inside and outside the duct. You cannot guarantee a fire will remain outside the duct. Fire Rated Ductwork & Metalic Enclosure • Test Procedure based on ISO 6944 (2008) standard • Conditions of the Test • Integrity • Stability • Insulation • Test includes Hangers, Supports and Firestop conditions. • Inserts and structural connections not inlcuded. Grease Duct • June 2012 • ICC ES issued Acceptance Criteria AC101.2 • Recognized galvanized duct without porcelain coating. • Tested to conditions of UL1978 except for those related to coating. • Field enclosure Conquest FireSpray [email protected] 586-576-7600