ICAF System with pneumatic release - Fireflex.com

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ICAF - Integrated Compressed Air Foam SystemAir Supply SectionPage 1 of 4Air Supply SectionCompressed Air Foam is composed of 90% compressed air.This air is provided by DOT and TC certified compressed aircylinders (C2) pressurized to 2,400 psi (16,536 kPa). Eachcylinder is supplied with a cylinder valve (C4) equipped with asafety relief disc (C3), which provides relief at 3600-4000 psi.Factory adjusted air pressure regulators (C5) are used toreduce the storage air pressure to a working pressure of100 psi (689 kPa) for the system operation.The cylinders bank pressure is supervised by a pressuretransducer (C7) that sends a low pressure supervisory signalwhen storage pressure goes under 2200 psi (15,158 kPa).That pressure represents the minimum pressure required toprovide air supply for the specified system discharge time.A safety valve (A2 - mounted in the cabinet) is also used atthe outlet of the air pressure regulator (C5) to protect thesystem from high pressure in case of malfunction. Theworking air pressure on the system side (downstream of theair regulator) is adjusted to a maximum of 150 psi(1034 kPa).The cylinders bank is factory assembled on a painted steelskid and includes the cylinders, support brackets, valves,high pressure tubing, discharge manifold (C8) and all thenecessary hardware.Cylinder Valve Guards (not shown) are used instead ofcylinder caps, eliminating the repetitive costs associated withthe use of cylinder caps. These guards protects the cylinderheads during shipment, therefore no protective caps have tobe removed and most importantly, no tubing or fittings arerequired to be installed after receiving.The cylinders bank is also provided with a refilling outlet (C9),which allows refilling the complete bank on-site with a highpressure compressor, without having to remove any otherparts or having to transport the cylinders to a filling plant.The skid mounted cylinders bank is available with single ortwin pressure regulator (C5) assemblies and is available inthe following storage capacities: up to 4 cylinders up to 8 cylinders up to 6 cylinders up to 10 cylinders up to 12 cylinders1. Air supply design and selection:The number of cylinders (C2) and regulators (C5) establishedat the design stage is based on both the maximum systemflow and discharge time required for the largest single hazardprotected or group of hazards that are protectedsimultaneously. FireFlex's program will take that intoaccount when calculating the system's capacity.Note regarding air cylinders: The calculated number ofcompressed air cylinders is based on a storagetemperature of 70 ° F (21 ° C), for a storage temperaturerange between 60 ° F and 80 ° F (15.5 ° C and 26.6 ° C). Anystorage temperature outside this range must be taken intoconsideration during system design phase.2. Interconnection Piping to ICAF SystemThere is one interconnection line (item 4) provided on all aircylinders banks. This connection is used to supplycompressed air between the cylinders bank and the ICAFSystem. Piping is factory prepared according to installationarrangement and is supplied with the system.Fig. 1 - Cylinders Bank dimensions & capacity:StorageCapacityDimensions(inches)Nbr of cyls. Width Length Height4 246 368 24 48 8210 601272FM-0723-0-12 B
Page 2 of 4ICAF - Integrated Compressed Air Foam SystemAir Supply Section3. Operation5. Maintenance and inspection:.1 To OPEN Air Supply:.a Before opening any cylinder valve, verify that thepiping between the cylinder bank and the ICAFSystem is properly installed and secured..b Slowly open one cylinder valve (C4) and check forany leak between the cylinder valve, the manifoldand the ICAF System air supply line (circled item 4).If there is no leak, pressure will build up in themanifold and the piping..c Once pressure is stabilized, pressure gauge (C6)should indicate a minimum pressure of 2200 psi. andpressure transducer (C7) should indicate a normalstatus at the ARC-1 Release controller..d Air pressure gauge (A4) inside the ICAF Systemcabinet should indicate a pressure of 100 psi. Referto TRIM SCHEMATIC section..e Open all of the remaining cylinders..2 To CLOSE air supply:.a Close all cylinders valves (C4)..b Bleed system manifold and air supply line by openingsystem flushing valve (A3). Refer to TRIMSCHEMATIC section.4. Recharge cylinders:After a system discharge or when cylinder pressure is underthe minimum recommended pressure, cylinders must berefilled with dry air to a storage pressure of 2400 psi @ 70 ° F(16,536 kPa @ 21 ° C). The following steps must be followedbefore sending the cylinders for refilling..a Close all cylinder valves (C4)..b Bleed system manifold and air supply line by openingsystem flushing valve (A3). Refer to TRIMSCHEMATIC section..c After all the pressure is removed, pressure gauge(C6) should indicate a pressure of 0 psi..d Remove pressure regulator assembly (C5) andpressure gauge (C6)..e Properly plug manifold outlet to prevent any dirt fromcontaminating manifold during transport.Regular inspections, tests, and maintenance should beperformed at intervals specified in this document to verify thatthe air supply is in good operating condition and that itfunctions as intended.Cylinder inspection:Storage air pressure shall be checked at least semi-annually.If the air cylinders bank shows a pressure under 2200 psi. itshall be refilled or replaced.Hydrostatic test:High-pressure cylinders used in ICAF systems shall not berecharged without a hydrostatic test (and remarking) if morethan 5 years have elapsed from the date of the last test.Cylinders continuously in service without discharging shall bepermitted to be retained in service for a maximum of 12 yearsfrom the date of the last hydrostatic test. At the end of 12years, they shall be discharged and retested before beingreturned to service.Cylinders continuously in service without discharging shall begiven a complete external visual inspection every 5 years ormore frequently if required. The visual inspection shall be inaccordance with Section 3 of CGA C-6, Standard for VisualInspection of Steel Compressed Gas Cylinders, except thatthe cylinders need not be emptied or stamped while underpressure. Inspections shall be made only by competentpersonnel and the results recorded on both of the following:(1) A record tag permanently attached to each cylinder(2) A suitable inspection reportA completed copy of the inspection report shall be furnishedto the owner of the system or an authorized representative.These records shall be retained by the owner for the life ofthe system.Where external visual inspection indicates that the containerhas been damaged, additional strength tests shall berequired.NOTICE: Empty cylinders must be recharged by FireFlexor its trained authorized agent. Contact FireFlex AfterSales Support Department for information about thenearest authorized agent to your location.FM-0723-0-12 B
Page 1 and 2: Operation &Maintenance ManualFM-072
Page 3 and 4: OWNER'S OPERATION & MAINTENANCE MAN
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ICAF System with pneumatic release - Fireflex.com

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