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EN 1568 2 EN 13565 1 2 IMO MSC 1 Circ 1384 3 Technical Rules T12 Coupling Generator Foam Agent of the APSAD R12 Standard HIGH EXPANSION FOAM GLOSSARY APSAD R12 A regulation which defines the minimum requirements for implementation commissioning and maintenance of high expansion foam systems primarily used in France APSAD T12 The technical rules governing the coupling or joint
High Expansion Foam Protocol, INTRODUCTION Inside Air System A high expansion foam system which utilizes air from inside the hazard area for the. High Expansion foam is used to suppress fire in a variety of applications from Class A and Class B storage generation of foam. facilities to shipboard machinery spaces to aircraft hangars Differences in regulatory requirements around the. world have led to a confusing collection of high expansion foam testing protocols These various protocols Outside Air System A high expansion foam system which utilizes air from outside the hazard area for the. set minimum performance standards for high expansion foam systems and equipment that vary in scope generation of foam. application and or geographical applicability Given the inconsistency among the various test protocols it can. be challenging to identify the most appropriate test method and 3rd party standard approvals for a specific. high expansion foam application Understanding the differences and limitations of the various test protocols Fill Rate The rate at which a hazard area is flooded with high expansion foam usually noted in units of. will enable a fire protection engineer to select the most applicable performance standard and 3rd party approval meters minute. for a given project, Fill Time Submergence Time A design criteria for high expansion foam systems defined as the maximum. This technical bulletin is intended to assist in specifying the most appropriate test protocols standards and time to completely submerge the tallest hazard in a protected space plus a safety factor typically defined. approvals for a given high expansion foam system installation It provides background terminology associated as some additional height above the hazard 3 meters per EN13565 2 For example if a 2 meter tall hazard. with high expansion foam systems and then compares and contrasts the performance criteria of three high requires a fill time of 2 minutes the high expansion foam system must be designed to discharge a minimum of. expansion foam test protocols commonly used in Europe 5 meters of foam in a maximum of 2 minutes fill rate 2 5 m min. 1 EN 1568 2 EN 13565 1, 2 IMO MSC 1 Circ 1384 Expansion Ratio The ratio of the volume of foam generated to the volume of foam solution required to. 3 Technical Rules T12 Coupling Generator Foam Agent of the APSAD R12 Standard produce the foam Example If one liter of foam is produced from one milliliter of foam solution the expansion. ratio would be 1000 ml foam 1 ml foam solution 1000 1. HIGH EXPANSION FOAM GLOSSARY, Drainage Time The time required for a specific percentage of foam solution to drain from the expanded foam. APSAD R12 A regulation which defines the minimum requirements for implementation commissioning and blanket and is often used as an indicator of how long the foam blanket will last For example 50 drainage time. maintenance of high expansion foam systems primarily used in France is the total time required for 50 of the volume of liquid consumed in generating the expanded foam to drain. from the foam, APSAD T12 The technical rules governing the coupling or joint testing of high expansion foam hardware and. high expansion foam equipment T12 delineates the tests required to validate the performance parameters Hydrocarbon Fuel A hydrocarbon based flammable liquid that is immiscible with water Examples crude oil. for the pairing of a specific high expansion foam generator model with a foam concentrate to meet design refined gasoline Jet A. requirements of a high expansion foam system in accordance with APSAD R12. Polar Fuel A hydrocarbon based flammable liquid that is miscible with water Examples Ethanol E85. IMO MSC 1 Circ 1384 The International Maritime Organization Guidelines for the Testing and Approval of Isopropyl Alcohol IPA Methyl Ethyl Ketone MEK. Fixed High Expansion Foam Systems, EN1568 2 Part 2 of the European Standard covering Fire Extinguishing Media Foam Concentrates Part 2. covers the specifications and testing requirements for high expansion foam concentrates for use on water. immiscible liquids, EN13565 2 Part 2 of the European Standard covering Fixed Firefighting Systems Foam Systems Part 2. addresses the requirements for design construction and maintenance of these systems. EN13565 1 Part 1 of the European Standard covering Fixed Firefighting Systems Foam Systems Part 1. covers the requirements and testing of system components. High Expansion Foam Protocol,Standards Comparison, EN1568 2 EN 13565 1 IMO MSC 1 Circ 1384 APSAD Technical Rules T12. Fire Classes Tested Class B Hydrocarbon Class B Hydrocarbon Class B Hydrocarbon and or Polar at the manufacturer s discretion. Inside Air Fire Tests N A Tests can be conducted with inside air at the manufacturer s discretion N A. For inside air tests the temperature of the air at the inlet is to be recorded throughout. Large scale inside air fire test is defined, Outside Air Fire Tests Test uses outside air Tests can be conducted with outside air at the manufacturer s discretion Tests must be conducted with outside air per the requirements of the T12 Technical. Rules Air temperature at the generator inlet must be at a temperature between 5 C. Class B Test 1 1 73 m2 round pan Heptane Class B Hydrocarbon Light Diesel Oil Simulated engine mockup with a combination Class B Hydrocarbon Heptane fire size to be 10 20 of the fire test enclosure. 60 second pre burn impinging low pressure 8 bar 10 4 kg min spray fire 4 m2 pan fire below the floor area maximum 30 second pre burn. simulated engine mockup and 3 m2 pan above the simulated engine mockup. 2 minute pre burn, Class B Test 2 N A Class B Hydrocarbon Light Diesel Oil High pressure 150 bar 3 0 kg min horizontal Class B Polar Solvent Acetone Fire size to be 20 30 of the fire test enclosure. spray fire over the top of the simulated engine mockup 15 second pre burn floor area maximum 30 second pre burn. Class B Test 3 N A Class B Hydrocarbon Light Diesel Oil Low pressure 8 bar 10 4 kg min concealed N A. inside the simulated engine mockup horizontal spray fire with a 0 1 m2 pan positioned. on the floor 2 minute pre burn, Class B Test 4 N A Class B Hydrocarbon Heptane Flowing 0 25 kg sec fire from the top of the simulated N A. engine mockup 15 second pre burn, Fire Test Notes Minimal transit time from the point The fire tests above are conducted twice once in a 500 m3 ceiling height 5 m Fill rate of the enclosure shall be 3 4 m min The fire test enclosure floor area may. of foam generation to the fire Foam enclosure and once in an enclosure of at least 1200 m3 and not more than 3500 m3 be resized with a room divider to bring the fill rate into the required range The fire. is fresh when applied to the fire ceiling height exceeding 7 5 m The intent of using different size compartments is to tests are used to determine the Foam Destruction Rate which is used for system. validate the ability to scale the system being tested to different size compartments calculation per the requirements of APSAD R12. during field application Fill rate of the enclosure shall be per system manufacturer s. requirements, Foam Quality Notes Fire conducted at a single expansion Foam quality is taken to be the nominal as specified by the manufacturer Fill rates for Actual expansion verified by determining the fill time of the fire test enclosure in the. ratio whatever the generic test the enclosures are based on the total solution flow and the nominal expansion ratio absence of a fire The fill test is repeated twice and the average expansion rate is. generator produces with the foam recorded for use in APSAD R12 system calculations 50 drainage time is determined. concentrate to be tested per the method in EN1568 2 and recorded. Test Foam Generic test foam generator used Generators used for all tests are stock units with no modifications in order to qualify Generators used for all tests are stock units with no modifications in order to qualify. Generator Notes Foam quality produced and used for the generator models tested with a specific foam concentrate the generator models tested with a specific foam concentrate. fire testing has no correlation to that,produced by full scale equipment. High Expansion Foam Protocol,STRENGTHS WEAKNESSES CONCLUSION. EN1568 2 EN13565 1 Specifying the right high expansion foam system requires an understanding of the insights and limitations of. Strengths each test protocol as well as the intended application of the system The protocols discussed are designed. to evaluate foam system performance in different environments The IMO test protocols simulate machinery. Widely recognized foam and foam hardware standards in Europe spaces such as an engine room where the potential for pool fires three dimensional fires and pressure fires. Validates high expansion foam hardware through a mechanical testing program which typically includes but is greater and where the likelihood that the high expansion foam system will have to function using hot and. is not limited to assessment of heat resistance salt spray corrosion and mechanical vibration or smoky air is high Alternatively the T12 Technical Rules protocols measure effectiveness in flammable liquid. Weaknesses storage applications where the most likely hazard is a small pool fire In contrast to the application specific test. protocols of the IMO tests and the T12 Technical Rules the EN fire test protocol utilizes a laboratory scale fire. The test protocols do not validate the fire performance of the foam quality produced by full scale equipment test with limited correlation to real world applications for high expansion foam systems. Laboratory fire test protocols do not simulate a specific hazard. No validation of fire performance using inside air Selecting the best test protocol for your given application is a critical first step in selecting the equipment you. No validation of fire performance on polar solvents will rely on to help protect lives and property For assistance in identifying the most appropriate test protocol. and system requirements contact SKUM Technical Services info skum com. IMO MSC 1 Circ 1384, Validates the combination of full scale equipment and foam concentrate as a system. Validates performance of the high expansion foam system under conditions that mimic changes in inside. outside air temperatures, Fire test scenarios and test conditions are representative of real world hazards obstacles pool fires three. dimensional fires and pressure fires, Multiple test enclosure sizes provide reasonable scalability insight for the high expansion foam system tested. Validates high expansion foam hardware through a mechanical testing program which typically includes but. is not limited to assessment of heat resistance salt spray corrosion and mechanical vibration. Weaknesses,Polar solvent fire performance is not validated. APSAD T12 Technical Rules, Fire tests validate the combination of full scale equipment and foam concentrate as a system. Fire tests offer the option to validate performance on both hydrocarbon and polar solvent fuels. Quantification of the Foam Destruction Rate allows for a method to account for the effect of the fire on the. fill rate of the system,Weaknesses, Requirements for the air temperature 5 C 25 C at the inlet to the high expansion foam generator eliminate. the possibility of testing under inside air conditions. APSAD is not widely recognized outside of France, About Johnson Controls Building Technologies Solutions. 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