Sets out requirements for the design, installation commissioning and maintenance of pre-engineered fire protection systems for the protection of unenclosed cooking appliances that produce grease-laden vapours and which may have an open surface of cooking oil or fat. Applies to the grease removal devices, hood exhaust plenums, exhaust systems, ducts and filters. Protection of enclosed ovens, water boilers and similar appliances are excluded. KEYWORDS: fire protection cooking pre-engineered