MOBILE AIRCRAFT REFUELERS

Pantograph and/or hose with approved, nonlubricated swivel. Zerk-type grease fittings in pantograph swing joints are not authorized, because of the possibility of contaminating the fuel with grease. Dry-break quick-disconnect fuel-service coupling with a 60- to 100-mesh strainer. Single-point-pressure refueling nozzle with a 55- psi maximum pressure regulator. Fire extinguisher(s) in accordance with NAVAIR 00-80R-14 (minimum of one 150-pound Halon or TAU unit per fueling point). Emergency eyewash/shower system available in the immediate area. Fire alarm. MOBILE AIRCRAFT REFUELERS Mobile refuelers are used primarily for cold fueling operations, with occasional hot-refueling operations at stations where installation of a direct refueling system is not justified. If continuous or extensive hot fueling is being performed with mobile refuelers, the use of an anchored pantograph, as shown in figure 7-5, should be considered. Mobile aircraft refuelers vary in capacity and configuration. However, whether contractor- or Government- owned, all mobile aircraft refuelers have the same basic requirements. These requirements are the following: Tank construction is one compartment only, with necessary baffles. Tank must completely drain at the low point without traps of liquid remaining in pockets. The tank is designed so that all portions are accessible for cleaning and maintenance. Tank is aluminum or stainless steel. Tank top opening(s) must be semi-permanently secured and used only for inventory and for interior inspections and repairs. Manhole covers must in-corporate a fusible plug or plugs, each equipped with fine screens to provide additional emergency release of vapor. Tank must be configured for bottom loading. The bottom loading hardware includes a cutoff valve, an adapter to accept the standard pressure (SPR) nozzle, and must be of sufficient size to receive the product at 600 gallons per minute. A fill stand anti-driveaway device is incorporated. Each tank must have an electronic system for controlling the filling operation (Scully Dynaprobe or equivalent) that is compatible with the system on the truck fill stand. It should be located near the bottom loading adapter and include art anti- driveaway feature (can be combined with anti- driveaway device previously mentioned). The piping system, including all hardware components, must be capable of dispensing fuel at the rated flow. A flow diagram of the general configuration of these system devices is shown in figure 7-6. Figure 7-5.—Hot-refueling with truck and pantograph. 7-8