RP500 Inspection & Maintenance Flashcards
a device usually incorporated into a suction pump housing that permits any air in the fuel to be released to the atmosphere to ensure accurate metering of the product
Air Eliminator
With regard to fuel dispensers, term generally means to use bolts to attach a component to a rigid base so that it cannot move
Anchor
fueling facility where a Level I or Level II qualified person is present
Attended Facility
a mechanism that does not allow a nozzle equipped with a bellows to deliver fuel unless the bellows has been compressed. The bellows interlock prevents the release of vapors by ensuring that the nozzle bellows seals tightly against the vehicle fill port before fuel can flor through the nozzle
Bellows Interlock
a safety device installed in a motor-vehicle fueling hose designed to separate when excessive pulling force is placed on the hose. Intended to minimize the release of flammable liquids and vapors, and to protect dispensers from damage when vehicles leave the dispenser area with the nozzle still in the vehicle fill pipe
single use cannot be reassembled after is has separated
reconnectable is designed to be recoupled after separation
Breakaway
the process of adjusting a metering device in a fuel dispenser so that the volume of the fuel actually dispensed and the volume indicated by the meter is within tolerances set by the authority having jurisdiction
Calibration
part of a classification system used by the National Electrical Code (NFPA 70) to describe the fire or explosion hazard present in a specific area.
~ignitable concentrations of flammable gases or vapors can exist under normal operating conditions
~ignitable concentrations of such gases or vapors may exist frequently because of repair or maintenance operation or because of leakage
~breakdown or faulty operation of equipment or processes might release ignitable concentrations of flammable gases or vapors, and might also cause simultaneous failure of electric equipment
Class I, Division 1
NFPA 70 - fire or explosion hazard present in specific area…
~in which volatile flammable liquids or flammable gases are handled, processed, or used, but in which the liquids, vapors, or gases will normally be confined within closed containers or closed systems from which they can escape only in case of accidental rupture or breakdown of such containers or systems, or in case of abnormal operation of equipment
~in which ignitable concentrations of gases or vapors are normally prevented by positive mechanical ventilation and which might become hazardous through failure or abnormal operation of the ventilating equipment
~adjacent to Class I, Division 1 location and to which ignitable concentrations of gases or vapors might occasionally be communicated unless such communication is prevented by adequate positive pressure ventilation from a source of clean air, and effective safeguards against ventilation failure are provided
Class I, Division 2
general term for a location where fire or explosion hazard are due to presence of fuel vapors. Classified areas are described in national fire and electrical codes
Classified Area
The presence of an electrical connection that can safely conduct static electrical charges from the nozzle spout through the hanging hardware to the dispenser cabinet and ground
Continuity
device that measures the transfers liquid fuel via pressure or suction from a storage system into a motor vehicle.
Dispenser
dispenser that includes a mechanism so that two grades of gasoline can be blended to form three or more grades
Blending Dispenser
a dispenser where the hose/dispenser connection is located at or near the top of the dispenser
High-Hose Dispenser
a dispenser where the hose/dispenser connection is located in the lower portion of the dispenser
Low-hose dispenser
a dispenser that has multiple fueling hoses on each side of the dispenser
(MHD) multi-hose dispenser
a dispenser that can deliver two or more products or product grades from the same side. may be single-hose (uni-hose) or multi-hose
(MPD) multi-product dispenser
fuel-dispensing system that allows fuel tanks on both sides of a vehicle to be filled during a single sales transaction. Fuel is metered in the master dispenser and then supplied to two nozzles. One nozzle attached to master dispenser and the other typically mounted on small cabinet positioned on the opposite side of the vehicle from the master dispenser. Supplied from fuel from underground piping.
Master/Satellite Dispenser
dispenser with only one hose on each side. However each hose can dispense more than one grade of fuel, depending on the grade selected by customer
(Uni-Hose) single hose dispenser
liquid tight container installed beneath a dispenser designed to contain leaks and spill from dispenser components and to isolate metallic piping and fittings from corrosive underground environment. AKA under dispenser containment (UDC)
Dispenser Sump
a fueling incident where a vehicle is driven away from the dispenser with the fueling nozzle spout still in the vehicle fill pipe. Not an incident where customer leaves after dispensing fuel without paying
Drive-Off
mechanical device installed at the base of a dispenser when the fuel supply piping operated under pressure. the valve is designed to auto shut off the flow to the dispenser in the event of a fire inside the dispenser of a sever impact to the dispenser. AKA crash valve, shear valve or impact valce
Emergency Shut Off Valve
clearly identified switch that disconnects all power to dispensers, pump and electrical equipment in the area surrounding fuel dispensers. May be inside or outside building
Emergency Stop Switch
component typically located inside a dispenser which removes particles and in some cases water that might be present in the motor fuel
Filter
device to aid putting out a fire.
Fire Extinguisher
device installed in a fuel dispensing system to limit the fuel flow rate. AKA flow restrictor
Flow Limiter
term used to describe the speed at which a liquid moves through a system. In a fuel dispenser, the flow rate is usually measured as a gallons per minute (gom)
Flow Rate
device equipped with an electrical conductor that provides a low-resistance connection between an electrical or electronic device and the earth
Grounded
part of a fueling nozzle that surrounds the operating lever. Helps prevent the lever from being operated accidentally and allows the nozzle to hung in cradle
Hand Guard
generic term for all the fuel and/or vapor containing components from the fuel-outlet fitting of the dispenser cabinet up to and including the nozzle. Typically include whip hoses, breakaways, dispensing hoses, swivels and nozzles,
Hanging Hardware
mechanism on fuel dispensing nozzle that holds the nozzle valve open, controls the flow rate and allows hands free motor vehicle fueling
Hold Open Latch