IONIZATION--A process in which electrically
LOOSE WATER--Used to describe liquid that has a
neutral atoms or molecules are changed into
free surface; it is NOT used to describe water or
charged particles by the loss or addition of
other liquid that completely fills a tank or
electrons.
compartment and thus has no free surface.
IONIZING RADIATION--Energy in the form of
L OW E R E X P L O S I V E L I M I T ( L E L ) -- T h e
electromagnetic emissions or subatomic particles
minimum percent by volume of a gas that, when
that interact with electrically neutral atoms or
mixed with air at normal temperature and pressure,
molecules, changing them into charged particles
will form a flammable mixture.
(ions).
L OW E R F L A M M A B L E L I M I T ( L F L ) -- T h e
IRRITANT--Substance which when in contact with
minimum concentration of a combustible gas or
living tissue can cause burning or itching.
vapor in air, usually expressed in percent by volume
at sea level, which will ignite if a sufficient ignition
ISOLATION--A process whereby a confined space is
source of energy is present.
removed from service and completely protected
against the inadvertent release of hazardous
MACHINERY SPACE--Machinery space is main
material into the space. Isolation can be
and auxiliary machinery spaces that contain any of
accomplished
by
blanking
o ff ;
the following: installed fire-fighting systems,
blocking/disconnecting all mechanical linkage,
oil-fired boilers, internal combustion engines, gas
electrical isolation, or other specified means.
turbines, or steam turbines.
ISOMETRIC DIAGRAM--The isometric damage
MAGAZINE SPRINKLER SYSTEMS--Sprinkler
control diagram diagrams each deck or platform
systems are used for emergency cooling of, and fire
and is shown at a separate level. They also show
fighting in, magazines, ready-service rooms,
piping systems as close as possible to their actual
ammunition, and missile handling areas. A
shipboard locations. Usually the isometric damage
magazine sprinkler system consists of a network of
control diagrams are not drawn to scale.
pipes. Magazine sprinkler systems can completely
flood their designated spaces within an hour.
ISOTOPES--Different forms of a chemical element
that have the same chemical characteristics but
MANNED HOSE--Manned hose is a single fire hose
different atomic masses due to variations in the
manned with a nozzleman and hosemen (as
number of neutrons.
required).
JP-5--A high flash point, kerosene-type aircraft
MASK ONLY--A protective posture that provides
turbine fuel, specifically designed for storage and
personnel relief from wearing the complete
use on naval ships.
chemical protective ensemble.
KEEL--The keel is the backbone of the ship.
MASTER COMPARTMENT CHECK-OFF LIST
(CCOL)--A master CCOL is developed for each
KILOTON--Nuclear weapon yield equivalent to the
ship at the time of its construction. CCOLs are
explosive energy released by 1,000 tons of TNT.
provided in each compartment of the ship and
LIMITED PROTECTION (LP) ZONE--A zone
provide information on all fittings within the
within a collective protection system that provides
compartment.
protection against liquid and solid CBR agents but
MATERIAL CONDITIONS OF READINESS--
not agents in vapor form.
Refers to the degree of access and system closure in
LINE SOURCE--A continuously moving munition or
effect at any given time.
device that releases chemical or biological agent
MATERIAL SAFETY DATA SHEET (MSDS)--A
along its path.
written or printed document about a hazardous
LONGITUDINAL FRAMES--Frames running
material that is prepared and submitted by a
parallel with the keel.
manufacturer, product supplier, or distributor. Each
LONGITUDINAL STABILITY--The tendency of a
MSDS contains the data elements required in
ship to resist a change in trim.
29 CFR 1910.1200.
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