08/08/1994
"Ballasting" means the loading of water or other liquid into a marine tank vessel's cargo tank to obtain proper propeller, rudder and hull immersion.
"Boiler" means any enclosed combustion device that uses fuel to produce energy in the form of steam.
"Car-sealed" means having a seal that is placed on the device used to change the position of a valve (e.g., from open to closed) such that the position of the valve cannot be changed without breaking the seal and requiring the replacement of the old seal, once broken, with a new seal.
"Combustion device" means all equipment, including, but not limited to, incinerators, flares, boilers, and process heaters used for combustion or destruction of organic vapors displaced from the loading berths.
"Flare" means an engineered control device designed for direct combustion of waste gases.
"Facility" means any plant, terminal, refinery or other location where there exists a dock, berth, or anchorage capable of bulk loading on marine tank vessels.
"Gasoline" means any petroleum product having a Reid Vapor Pressure of four psia or greater and used as automotive fuel and aviation fuel.
"Housekeeping" means altering the composition of gases contained within marine vessel tanks by tank washing, gas freeing, or purging.
"Inlet to the control device" means any point on the vapor line between the vessel and the control device prior to the addition of any inert, dilution or enrichment gas.
"Loading berth" means the loading arms, pumps, meters, shutoff valves, relief valves, and other piping and valves necessary to fill marine vessels. This includes those items necessary for off shore loading.
"Loading cycle" means the time period from the beginning of filling a marine vessel until flow of product into the vessel ceases, as measured by the flow indicator.
"Marine tank vessel" means any tank ship or barge which transports liquid product such as gasoline in bulk.
"Non-vapor tight" means any marine vessel that does not pass the required vapor-tightness test.
"Process heater" means a device that transfers heat liberated by burning fuel to fluids contained in tubes, except water that is heated to produce steam.
"Recovery device" means an individual unit of equipment, including but not limited to an absorber, carbon adsorber, or condensers, capable of and used for the purpose of removing vapors and recovering liquids.
"Vapor collection system" means any equipment located at the affected facility used for containing vapors displaced during the loading of marine tank vessels. This does not include the vapor collection system that is part of any marine vessel vapor collection manifold system.
"Vapor-tight" means any marine tank vessel that has demonstrated within the preceding 12 months to have no leaks. This demonstration shall be made using 40 CFR Part 60, App. A., Method 21 (7/1/92), during the last 20% of loading in a product tank. A reading of greater than 10,000 ppmv as methane shall constitute a leak. As an alternative, a marine vessel owner or operator may use the vapor-tightness test described in 43.6 of this regulation to demonstrate vapor-tightness. A marine vessel loaded at negative pressure is assumed to be vapor-tight.
(43-1)
where:
Mei = Mass of total organic compounds (milligrams [mg]) emitted during testing interval i.
Ves = Volume of air-vapor mixture exhausted (cubic meters [m3]), at standard conditions.
Ce = Total organic compounds concentration (measured as carbon) at the exhaust vent (ppmv).
K = Density of calibration gas (milligrams/cubic meter [mg/m3]) at standard conditions.
= 1.83x106 for propane
= 2.41x106 for butane
s = Standard conditions, 20°C and 760 millimeters of mercury (mm Hg).
(43-2)
where:
E = Mass of total organic compounds emitted, kilograms per hour (kg/hr).
Mi = Mass of total organic compounds emitted during testing interval i, kg.
T = Total time of all testing intervals, hr.
n = Number of testing intervals.
(43-3)
where:
R = Efficiency of control device, %
Eb = Mass flow of total organic compounds prior to control device, kg/hr
Ea = Mass flow of total organic compounds after control device, kg/hr
(43-4)
where:
(43-5)
where:
7 Del. Admin. Code § 1124-43.0