As used in this subpart:
Certifying entity means an individual or organization accepted by the Commandant (CG-522) to review plans and calculations for vapor control system designs, and to conduct initial inspections and witness tests of vapor control system installations.
Existing vapor control system means a vapor control system which was operating prior to July 23, 1990.
Facility vapor connection means the point in a facility's vapor collection system where it connects to a vapor collection hose or the base of a vapor collection arm.
Inerted means the oxygen content of the vapor space in a tank vessel's cargo tank is reduced to 8 percent by volume or less in accordance with the inert gas requirements of 46 CFR 32.53 or CFR 153.500.
Liquid knockout vessel means a device to separate liquid from vapor.
Maximum allowable transfer rate means the maximum volumetric rate at which a vessel may receive cargo or ballast.
New vapor control system means a vapor control system which is not an existing vapor control system.
Vapor balancing means the transfer of vapor displaced by incoming cargo from the tank of a vessel receiving cargo into a tank of the vessel or facility delivering cargo via a vapor collection system.
Vapor collection system means an arrangement of piping and hoses used to collect vapor emitted from a vessel's cargo tanks and transport the vapor to a vapor processing unit.
Vapor control system means an arrangement of piping and equipment used to control vapor emissions collected from a vessel, and includes the vapor collection system and the vapor processing unit.
Vapor destruction unit means a vapor processing unit that destroys cargo vapor by a means such as incineration.
Vapor dispersion system means a vapor processing unit which releases cargo vapor to the atmosphere through a venting system not located on the vessel being loaded or ballasted.
Vapor processing unit means the components of a vapor control system that recovers, destroys, or disperses vapor collected from a vessel.
Vapor recovery unit means a vapor processing unit that recovers cargo vapor by a non-destructive means such as lean oil absorbtion, carbon bed adsorption, or refrigeration.
Vessel vapor connection means the point in a vessel's fixed vapor collection system where it connects to a vapor collection hose or arm.
[CGD 88-102, 55 FR 25429, June 21, 1990, as amended by CGD 96-026, 61 FR 33666, June 28, 1996; USCG-2010-0351, 75 FR 36284, June 25, 2010]