T R A I N E R S , E VA L UATO R S , A N D S A F E T Y
VAPOR--Gas state of a substance.
OBSERVERS--Trainers, evaluators, and safety
VAPOR SECURE--Establishing a film or foam
observers directly observe individual and team
b l a n k e t ove r f l a m m a b l e l i q u i d t o p r eve n t
performance of the training event and some may act
vaporization.
as initiators.
VAPORIZATION--To pass into the gas or vapor state.
TRANSFER HAZARD--Radioactive contamination
VECTORS--Disease vectors are animal carriers that
that can be spread from a contaminated area to a
transfer infective agents from one host to another.
clean area by foot traffic or some other form of
They usually are arthropods (insects, arachnids, and
physical contact.
crustaceans) but may be other animals.
TRANSIENT DOSE--A term used in some texts to
VENTILATING--The process of moving air into or
describe the radiological dose received from the
from a compartment or space.
time of arrival of fallout or the base surge to the time
of cessation of fallout.
VERTICAL AUDIT--These audits take into account
T R A N S I E N T R A D I AT I O N E F F E C T S O N
all aspects of a job or task by examining the
documentation used to certify or recertify the
ELECTRONICS (TREE)--Caused by initial
gamma and neutron emissions from a nuclear burst.
system/component during and after repairs. These
These emissions result in the failure or degraded
audits may examine any aspect of the task (training
operation of sophisticated solid-state circuits.
and qualification of personnel, technical and
production requirements, cleanliness, or material
T R A N S I T R A D I AT I O N -- R a d i a t i o n f r o m
control).
radioactive particles or droplets in the environment
around the ship.
V E RT I C A L O F F S E T L O O P F I R E M A I N
SYSTEM--Consists of two single piping runs,
TRANSMISSION FACTOR--A fraction, always less
installed fore and aft in an oblique (that is, angled)
than one, that represents the proportion by which
plane, separated both vertically and athwartship,
shielding attenuates gamma radiation.
connected at the ends to form a loop. The lower
TRIMMING MOMENT--A forward (or aft)
section of the firemain is located as low in the ship
movement of weight.
as practical on one side, and the upper section is
located on the damage control deck on the opposite
UNDERGROUND BURST--A nuclear explosion
side of the ship. Athwartship cross-connects are
centered below the surface of the ground.
usually provided at each pump riser.
UNDERWATER BURST--A nuclear burst centered
VIRUSES--A group of parasitic microorganisms that
below the surface of a body of water.
live in the cells of their selected hosts.
UNDERWATER SHOCK--A pressure wave that
VOLATILITY--The readiness of a liquid to vaporize
travels outward in water from an explosion at or
or evaporate. The tendency to be readily diffused or
under the surface.
dissipated in the atmosphere, especially at ordinary
UNDERWATER SHOCK INJURY--Injury among
temperatures.
topside and below-deck personnel by the rapid
VOMITING AGENTS--These agents are dispersed
upward movement of the deck.
as aerosols and produce their effects by inhalation.
UPPER DECK--A partial deck extending from side to
These agents produce minor eye irritation and a
side above the main deck amidships.
feeling of pain and sense of fullness in the nose and
UPPER EXPLOSIVE LIMIT (UEL)--Upper end of
sinuses.
the explosive range. Concentrations above this limit
WATERLINE--The water level along the hull of a
are too rich to explode or burn. Concentrations
ship afloat.
below the LTEL are within the explosive range.
WATERTIGHT INTEGRITY--The degree of
UPSET (EMP, TREE)--Temporary degradation in an
quality of watertightness.
electrical or electronic system caused by
WEATHER DECK--A deck or part of a deck exposed
electromagnetic pulse (EMP) or transient
radiological effects on equipment (TREE).
to the weather.
AI-22