API RP 1639:2003 pdf download

API RP 1639:2003 pdf download.Ownerl Operator’s Guide to Operation and Maintenance of Vapor Recovery Systems at Gasoline Dispensing Facilities.
B.1 Definitions
B.1 .1 assist system: A vapor recovery system that employs a pump, blower, or other vacuum producing devices to collect and/or process vapors.
B.1 .2 balance system: A vapor recovery system that uses direct displacement to collect, transport, and/or process rapors generated during product transfer.
B.1.3 bellowless nozzle: Any nozzle used with a vacuum assist system to capture gasoline vapors at the motor vehicle filler neck without flexible bellows.
B.1 .4 bootless nozzle: A type of vapor recovery nozzle that does not have a bellows, or “boot,” over the length of the nozzle spout. (See “bellowless” nozzle).
B.1.5 breakaway coupling or valve: A component attached to the coaxial or inverted hose that allows the safe separation of the hose from the dispenser in the event of a forced removal such as in the case of a “drive-off.”
B.1 .6 CARB Certified or Certified by CAR B: A Stage I or Stage II vapor recovery system, equipment, or any component thereof for which the California Air Resources Board has evaluated its performance and issued a valid Executive Order or approval letter.
B.1.7 coaxial (submerged) fill tube: A fill tube that contains two concentric passages. The center passage transfers gasoline to the storage tank and the outer passage carries the gasoline vapors to the tank truck or trailer.
B.1 .8 coaxial hose: A hose that contains two concentric passages, one within the other. The inner passage dispenses the liquid gasoline into the vehicle fuel tank while the outer passage carries the gasoline vapors from the vehicle fuel tank to the storage tank.
B.1.9 dispenser: A unit housing the aboveground gasoline and vapor recovery piping, the meters, controls and registers which provides fittings to hang hoses and nozzles when they are not in use.
B.1 .10 dry break: A normally closed Stage I vapor recovery component installed on the underground vapor riser that opens when connected to a mating vapor elbow fitting. Also referred to as a poppet valve.
B.1 .11 Executive Order: A document issued by the
CARB Executive Officer to certify a vapor recovery system.
(CARB)
B.1.12 fill pipe (or drop tube): The tank opening where fuel is delivered into the underground storage tank. A submerged fill pipe has its discharge opening entirely covered when the liquid level in the tank is twelve inches above the bottom.
B.1.13 fueling position: A fuel dispensing unit consisting of one or more nozzles and meters capable of delivering only one fuel product at one time.
B.1 .14 headspace: The volume of the underground storage tank above the liquid product (ullage).
B.1 .15 hold-open latch: An integral part of a dispensing nozzle designed to allow hands-free dispensing of gasoline.
B.1.16 incinerator: A processor used on some vapor- assist systems and designed to eliminate hydrocarbon emissions by any kind of oxidation. Also called a thermal processor.
B.1.17 insertion interlock: An integral part of a vapor recovery nozzle which prohibits the dispensing of fuel unless the bellows has been compressed against the vehicle to make a seal.
B.1.18 inverted hose: A coaxial hose (hose within a hose) in which gasoline flows through the space between the inner and outer hose while vapors are returned through the inner hose.
B.1 .19 liquid removal device: A device designed to remove liquid from the vapor return portion of a coaxial vapor hose used with balance systems.
B.1 .20 mini-boot: A device that is permanently installed at the base of certain vapor recovery nozzle spouts to enhance the effectiveness of vapor collection.
B.1 .21 multi-product dispenser: A dispenser capable of delivering two or more product grades.
B.1 .22 overfill prevention device: A device designed to stop or restrict the delivery of product to a storage tank to prevent the over-filling and potential spills.
B.1 .23 Phase I or Stage I: Control of vapors generated during the transfer of gasoline from a transport tank to the gasoline dispensing facility tank.
B.1.24 Phase II or Stage II: Control of vapors generated during the transfer of gasoline to a vehicle fuel tank.
B.1.25 pressure/vacuum relief valve (P/V valve): A
valve installed on the vent riser of gasoline storage tanks designed to prevent vapor emissions and relieve pressure or vacuum build-up at preset values.