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Published byTheodore Thompson Modified over 9 years ago
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ADS / PHX SERIES SYSTEMS ADVANCED TOPICS
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F O R T H E NEM ILLE NN I U M F O R T H E NEM ILLE NN I U M Advanced ADS / PHX Topics Halon retrofits Directional valve systems Nitrogen manifolds
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HALON RETROFIT
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F O R T H E NEM ILLE NN I U M F O R T H E NEM ILLE NN I U M Hazard Analysis As-built piping very important –Pipe type –Pipe grade –Note existing pipe sizes –Know all routings –Blow out existing pipe
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F O R T H E NEM ILLE NN I U M F O R T H E NEM ILLE NN I U M Hazard Analysis Nozzles –Note existing type and direction –Understand existing flow splits
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F O R T H E NEM ILLE NN I U M F O R T H E NEM ILLE NN I U M Hazard Analysis Enclosure –Check hazard dimensions and calculate FM-200 from volume, not Halon quantity –Check enclosure integrity
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DIRECTIONAL VALVE SYSTEMS
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F O R T H E NEM ILLE NN I U M F O R T H E NEM ILLE NN I U M ABCDE Directional Valve Systems Selector valves allow a single bank of FM-200 cylinders to protect multiple hazards independently
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F O R T H E NEM ILLE NN I U M F O R T H E NEM ILLE NN I U M Directional Valves Available sizes: –1/2” through 4” –EXCEPT 1½” Connections: –NPT for 1/2” through 3” –Flanged for 4” Factory fitted with a pneumatic actuator
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F O R T H E NEM ILLE NN I U M F O R T H E NEM ILLE NN I U M Pneumatic Solenoid Controls flow of nitrogen to the pneumatic actuator on the appropriate directional valve
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F O R T H E NEM ILLE NN I U M F O R T H E NEM ILLE NN I U M Pressure Relief Controls pressure in the nitrogen line to 116 psig for proper operation of the pneumatic actuator
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F O R T H E NEM ILLE NN I U M F O R T H E NEM ILLE NN I U M Directional Valve Operation Valve operates pneumatically, using pressure from a nitrogen pilot cylinder Operation can be controlled using the pneumatic solenoid Requires a 5-second delay between operation of the valve and actuation of the FM-200 system to ensure the valve is fully opened
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F O R T H E NEM ILLE NN I U M F O R T H E NEM ILLE NN I U M Directional Valve System Design Each possible agent path requires a separate hydraulic calculation All common components must be identical for every calculation –Cylinder Size and Fill –Manifold configuration –Nitrogen Orifice Fittings –Shared pipe sections
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F O R T H E NEM ILLE NN I U M F O R T H E NEM ILLE NN I U M Directional Valve System Design Equivalent length of the Directional Valve(s) must be modeled in the calculation –Thru tee orientation –90° elbow orientation
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NITROGEN MANIFOLDS
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F O R T H E NEM ILLE NN I U M F O R T H E NEM ILLE NN I U M ADS / PHX Nitrogen Manifolds Allows nitrogen cylinders to be remotely located from the FM-200 cylinder bank Single nitrogen pipe network feeds all of the FM-200 cylinders
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F O R T H E NEM ILLE NN I U M F O R T H E NEM ILLE NN I U M ADS / PHX Nitrogen Manifolds NOT UL Listed Design services will be available through Product Management and Applications Engineering
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