2012 Ocean Ranger Guidebook Revision 3-7-12 - Alaska ...

2012 Ocean Ranger Guidebook 3-7-12
Dispersion: The breaking up of an oil slick into small droplets which are mixed
into the water column as a result of breaking waves and other sea surface
turbulence.
DMR: Discharge Monitoring Report, a report submitted to ADEC listing
wastewater sample results and any violations of the General Permit, VSSP, or
QAPP.
Effluent: To flow out. (Waste material, refuse, and sewage)
Emulsification: The formation of a water - in - oil mixture. In the environment,
the tendency for emulsification to occur varies with different oils and is much
more likely to occur under high-energy conditions (wind and waves). Emulsions
may also be formed by surfactants, including detergents, which cause the oil and
water to mix, or by mechanical means such as pressure washing or pump action.
EPA VGP: The Environmental Protection Agencies Vessel General Permit.
Equipment having and oil to sea interface: Equipment that uses a seal to
prevent leakage of oil into the sea. Examples, oil-lubricated stern tube seals,
hydraulically-driven stabilizer fin seals, bow and stern thruster seals. An indicator
that system seals are leaking to the sea may be evidence of frequent filling of
system reservoirs, presence of barrels, drums, hoses, pumps, and other
equipment/supplies/arrangements necessary to refill systems. Some ships’ SMS
or environmental compliance programs may require that records of refilling such
systems are kept. If so, these records should be checked.
Fecal Coliform Bacteria: Bacteria found in the intestinal tracts of mammals.
Their presence in water or sludge is an indicator of pollution and possible
contamination by pathogens.
Free Cl2: Free Chlorine test method
Garbage (from 33 CFR 151): Garbage means all kinds of victual, domestic, and
operational waste, excluding fresh fish and parts thereof, generated during the
normal operation of the ship and liable to be disposed of continuously or
periodically, except dishwater, graywater, and those substances that are defined
or listed in other Annexes to MARPOL 73/78.
General Permit: The State of Alaska General Permit for the Marine Discharge of
Treated Sewage and Treated Graywater from Commercial Passenger Vessels
Operating in Alaska. This permit only applies to overnight vessels carrying more
than 250 passengers.
Geometric mean: The nth root of the product of a series of n numbers computed
by taking the logarithm of each number, computing the arithmetic mean of the
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