Ansul Detection Line & Nozzles Severely Clogged - UL300 & NFPA Code Deficiency (Failed Trip Test) (Non-Compliant) (Replacement Needed) During your most recent Fire Protection Inspection, our technicians discovered that the detection line and nozzles on the Ansul system have a severe grease buildup that is clogging each component and affecting operation. As a result, the Ansul system has failed the trip test and does not meet the requirements of ANSI/NFPA/UL300 and the manufacturer. NFPA 17A 10.4.4 The manual release function test is tested to the standard of the manufacturer during each inspection. NFPA 10.2.3* Automatic Fire-Extinguishing systems SHALL comply with ANSI/UL300 or other equivalent standards and SHALL be installed in accordance with the requirements of the listing. As of 2014, standards written by the National Fire Protection Association (NFPA), and adopted by most states as a part of their fire code, require all kitchen systems must be UL 300-compliant. Additionally,