b'LT ENGINEERINGCATALOG MODELSThere are currently three models available for the ParkUSAfrom entering the outlet piping. Hazardous fumes are vented Helicepter unit, these configurations are given by thefrom the separator to a designated vent to prevent fumes material of construction: from entering the public sewer.The ParkUSA HFS-C Series Interceptor is manufactured The Coalescing Media Pack consists of closely spaced of Class II 4500 PSI precast concrete. Pre-casting thecorrugated plates manufactured with an oleophilic concrete shell insures that all units achieve structural and(hydrocarbon attracting) material. The corrugated pattern physical uniformity. The units are structurally engineered for induces a sinusoidal laminar flow of the oily water mixture. H-20 truck loading and can be buried without any need Under laminar flow conditions, buoyancy forces cause for any other structural protection. The unit is of monolithichydrocarbon droplets to rise until they attach themselves construction at bottom and walls to insure against to the oleophilic plates. Small hydrocarbon droplets tend joint leakage. to coalesce into sheets on the underside surfaces of the corrugated plates. The sinusoidal flow path also promotes a The ParkUSA HFS-S Series Interceptor is of -inch thickhigh incidence of droplet collision as the fluid flow constantly ASTM A36 carbon steel. All welding is performed inchanges direction from a downward path to a vertical path. accordance to American Welding Society D1.1 standards. The coalescing hydrocarbon rises to the surface in largeWastewater SystemsThe inlet, outlet, vent, and drain connections shall beglobules through weep holes or gutters in the coalescing standard duty Class 150 PSI. Interceptor shall have liftingplate pack.lugs, gasketed access covers, site glass, makeup water valve port, and support beams. The interceptor shall be coatedDESIGN CONSIDERATIONSinside and outside with a fire retardant and corrosionFor general commercial heliport applications, the standard resistant coating system. The coalescing media pack is Fuel-Water Separator is recommended. The parameters of modular construction for easy maintenance andused in designing these gravity flow units are: ambient fluid constructed of noncorrosive materials. temperatures (40 - 110 F), standard atmospheric conditions, fuel - water specific gravity differential of 0.15, pH ofThe ParkUSA HFS-F Series Interceptor is manufacturedsix - eight, and an average influent fuel concentration of fiberglass or plastic and is used where lightweight5000 ppm or less. The resultant effluent fuel concentration construction is required. of the wastewater should be less than 400 ppm for public sanitary sewer, or 15 ppm for discharge into storm sewer SYSTEM COMPONENTS conforming to EPA regulations.The ParkUSA HeliCepter Fuel-Oil Interceptor includes theThe fuel - water separator should be located so as to following standard & optional components: intercept the heliport wastewater drainage from the publicElevated Stands & Ladderssewer. The separator should be installed and located so Dual Wall Constructionthat it will be easily accessible for inspection, cleaning, Stainless Steel Constructionand removal of separated waste products. There should beUL 2085 Fuel Storage Tankan adequate number of separator access openings to permitConcrete Containment Vaultcleaning and/or removal of the coalescing plate packs. TheHigh Level Monitoring Sensors & Controlsseparator should be located near the heliport for maximumPrecast Concrete, Steel or Composite Separator Basinprotection against fire hazard. The inlet, outlet, and ventAccess covers or hatchwayspiping shall be adequately sized (minimum of 4 inches). Access laddersSafety hatch netsHigh-level alarm and control panelSIZINGThe fuel-water separator is selected based on anticipated OPERATION rainwater flow rate (gpm) and the fuel spill capacity through the separator.The function of the Fuel-Water Separator is to intercept free fuel and oils from the heliport drainage and then retain it forThe flow rate is determined by the maximum amount of removal. The ParkUSA Series HFS Interceptor utilizes similarrainwater drainage from the heliport. The National Weather technology in separating water and solids from aviationService and the Administrative Authority having jurisdiction fuels. The Coalescing Media Pack offers enhanced separationshould be consulted when determining the rate of rainfall for of the hydrocarbons. the area of the country in which the heliport is to be located.The wastewater flows through the separator into the inletThe fuel spill capacity of the separator is determined chamber, which is separated by an inlet weir. Heavy solidsaccording to the largest fuel capacity of all the aircraft that settle and 100 percent fuel/oil slugs rise immediately tocould use the heliport. The fuel spill capacity of the separator the surface. The remaining fuel laden wastewater flowsshould meet or exceed this capacity.through a Coalescing Media Pack (CMP). Both the smaller hydrocarbon droplets and fine solids are progressively separated. Downstream, the seal dam prevents collected fuel [email protected]|888-611-7275|WWW.PARKUSA.COM 349'