[Code of Federal Regulations]
[Title 46, Volume 1]
[Revised as of Octobery 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 46CFR39.10-3]

[Page 501-502]
 
                           TITLE 46--SHIPPING
 
         CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY
 
PART 39_VAPOR CONTROL SYSTEMS--Table of Contents
 
                          Subpart 39.10_General
 
Sec. 39.10-3  Definitions--TB/ALL.

    As used in this part:
    Cargo deck area means that part of the weather deck that is directly 
over the cargo tanks.
    Existing vapor collection system means a vapor collection system 
which was operating prior to July 23, 1990.
    Facility vapor connection means the point in a facility's fixed 
vapor collection system where it connects with the vapor collection hose 
or the base of the vapor collection arm.
    Independent as applied to two systems means that one system will 
operate with a failure of any part of the other system except power 
sources and electrical feeder panels.
    Inerted means the oxygen content of the vapor space in a cargo tank 
is reduced to 8 percent by volume or less in accordance with the inert 
gas requirements of Sec. 32.53 or Sec. 153.500 of this chapter.
    Lightering or lightering operation means the transfer of a bulk 
liquid cargo from a tank vessel to a service vessel.
    Marine Safety Center means the Commanding Officer, U.S. Coast Guard 
Marine Safety Center, 400 Seventh Street, SW., Washington, DC 20590-
0001.
    Maximum allowable transfer rate means the maximum volumetric rate at 
which a vessel may receive cargo or ballast.
    New vapor collection system means a vapor collection system which is 
not an existing vapor collection system.
    Service vessel means a vessel which transports bulk liquid cargo 
between a facility and another vessel.
    Topping-off operation means the transfer of a bulk liquid cargo from 
a service vessel to another vessel in

[[Page 502]]

order to load the receiving vessel to a deeper draft.
    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 to 
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. It includes the 
vapor collection system and vapor processing unit.
    Vapor processing unit means the components of a vapor control system 
that recovers, destroys, or disperses vapor collected from a vessel.
    Vessel vapor connection means the point in a vessel's fixed vapor 
collection system where it connects with the vapor collection hose or 
arm.