Except where expressly provided otherwise, the following
definitions apply to the Code. Additional definitions are provided
in chapters throughout the Code.
1.2.1
Accommodation spaces are those
spaces used for public spaces, corridors, lavatories, cabins, offices,
hospitals, cinemas, games and hobby rooms, barber shops, pantries
without cooking appliances and similar spaces.
1.2.2
"A" class divisions are divisions
as defined in regulation II-2/3.2 of
the SOLAS Convention.
1.2.3
Administration means the Government
of the State whose flag the ship is entitled to fly. For Administration
(port), see port Administration.
1.2.4
Anniversary date means the
day and the month of each year that will correspond to the date of
expiry of the International Certificate of Fitness for the Carriage
of Liquefied Gases in Bulk.
1.2.5
Boiling point is the temperature
at which a product exhibits a vapour pressure equal to the atmospheric
pressure.
1.2.6
Breadth (B) means the maximum
breadth of the ship, measured amidships to the moulded line of the
frame in a ship with a metal shell, and to the outer surface of the
hull in a ship with a shell of any other material. The breadth (B) shall
be measured in metres.
1.2.7
Cargo area is that part of
the ship which contains the cargo containment system and cargo pump
and compressor rooms and includes the deck areas over the full length
and breadth of the part of the ship over these spaces. Where fitted,
the cofferdams, ballast or void spaces at the after end of the aftermost
hold space or at the forward end of the foremost hold space are excluded
from the cargo area.
1.2.8
Cargo containment system is
the arrangement for containment of cargo including, where fitted,
a primary and secondary barrier, associated insulation and any intervening
spaces, and adjacent structure, if necessary, for the support of these
elements. If the secondary barrier is part of the hull structure,
it may be a boundary of the hold space.
1.2.9
Cargo control room is a space
used in the control of cargo handling operations.
1.2.10
Cargo machinery spaces are
the spaces where cargo compressors or pumps, cargo processing units,
are located, including those supplying gas fuel to the engine-room.
1.2.11
Cargo pumps are pumps used
for the transfer of liquid cargo including main pumps, booster pumps,
spray pumps, etc.
1.2.12
Cargoes are products listed
in chapter 19, that are carried in bulk by ships subject to the Code.
1.2.13
Cargo service spaces are spaces
within the cargo area, used for workshops, lockers and store-rooms
that are of more than 2 m2 in area.
1.2.14
Cargo tank is the liquid-tight
shell designed to be the primary container of the cargo and includes
all such containment systems whether or not they are associated with
the insulation or/and the secondary barriers.
1.2.15
Closed loop sampling is a
cargo sampling system that minimizes the escape of cargo vapour to
the atmosphere by returning product to the cargo tank during sampling.
1.2.16
Cofferdam is the isolating
space between two adjacent steel bulkheads or decks. This space may
be a void space or a ballast space.
1.2.17
Control stations are those
spaces in which ship's radio, main navigating equipment or the emergency
source of power is located or where the fire-recording or fire control
equipment is centralized. This does not include special fire control
equipment, which can be most practically located in the cargo area.
1.2.18
Flammable products are those
identified by an "F" in column "f" in the table of chapter
19.
1.2.19
Flammability limits are the
conditions defining the state of fuel-oxidant mixture at which application
of an adequately strong external ignition source is only just capable
of producing flammability in a given test apparatus.
1.2.21
Gas carrier is a cargo ship
constructed or adapted and used for the carriage in bulk of any liquefied
gas or other products listed in the table of chapter 19.
1.2.22
Gas combustion unit (GCU) is
a means of disposing excess cargo vapour by thermal oxidation.
1.2.23
Gas consumer is any unit within
the ship using cargo vapour as a fuel.
1.2.24
Hazardous area is an area
in which an explosive gas atmosphere is, or may be expected to be
present, in quantities that require special precautions for the construction,
installation and use of electrical equipment. When a gas atmosphere
is present, the following hazards may also be present: toxicity, asphyxiation,
corrosivity, reactivity and low temperature. These hazards shall also
be taken into account and additional precautions for the ventilation
of spaces and protection of the crew will need to be considered. Examples
of hazardous areas include, but are not limited to, the followingfootnote:
-
.1 the interiors of cargo containment systems
and any pipework of pressure-relief or other venting systems for cargo
tanks, pipes and equipment containing the cargo;
-
.2 interbarrier spaces;
-
.3 hold spaces where the cargo containment system
requires a secondary barrier;
-
.4 hold spaces where the cargo containment system
does not require a secondary barrier;
-
.5 a space separated from a hold space by a single
gastight steel boundary where the cargo containment system requires
a secondary barrier;
-
.6 cargo machinery spaces;
-
.7 areas on open deck, or semi-enclosed spaces
on open deck, within 3 m of possible sources of gas release, such
as cargo valve, cargo pipe flange, cargo machinery space ventilation
outlet, etc.;
-
.8 areas on open deck, or semi-enclosed spaces
on open deck within 1.5 m of cargo machinery space entrances, cargo
machinery space ventilation inlets;
-
.9 areas on open deck over the cargo area and
3 m forward and aft of the cargo area on the open deck up to a height
of 2.4 m above the weather deck;
-
.10 an area within 2.4 m of the outer surface
of a cargo containment system where such surface is exposed to the
weather;
-
.11 enclosed or semi-enclosed spaces in which
pipes containing cargoes are located, except those where pipes containing
cargo products for boil-off gas fuel burning systems are located;
-
.12 an enclosed or semi-enclosed space having
a direct opening into any hazardous area;
-
.13 void spaces, cofferdams, trunks, passageways
and enclosed or semi-enclosed spaces, adjacent to, or immediately
above or below, the cargo containment system;
-
.14 areas on open deck or semi-enclosed spaces
on open deck above and in the vicinity of any vent riser outlet, within
a vertical cylinder of unlimited height and 6 m radius centred upon
the centre of the outlet and within a hemisphere of 6 m radius below
the outlet; and
-
.15 areas on open deck within spillage containment
surrounding cargo manifold valves and 3 m beyond these up to a height
of 2.4 m above deck.
1.2.25
Non-hazardous area is an area
other than a hazardous area.
1.2.26
Hold space is the space enclosed
by the ship's structure in which a cargo containment system is situated.
1.2.28
Independent means that a piping
or venting system, for example, is in no way connected to another
system and that there are no provisions available for the potential
connection to other systems.
1.2.29
Insulation space is the space,
which may or may not be an interbarrier space, occupied wholly or
in part by insulation.
1.2.30
Interbarrier space is the
space between a primary and a secondary barrier, whether or not completely
or partially occupied by insulation or other material.
1.2.31
Length (L) is the length as
defined in the International Convention on Load Lines in force.
1.2.32
Machinery spaces of category A are
those spaces, and trunks to those spaces, which contain either:
-
.1 internal combustion machinery used for main
propulsion; or
-
.2 internal combustion machinery used for purposes
other than main propulsion where such machinery has, in the aggregate,
a total power output of not less than 375 kW; or
-
.3 any oil-fired boiler or oil fuel unit or any
oil-fired equipment other than boilers, such as inert gas generators,
incinerators, etc.
1.2.33
Machinery spaces are machinery
spaces of category A and other spaces containing propelling machinery,
boilers, oil fuel units, steam and internal-combustion engines, generators
and major electrical machinery, oil filling stations, refrigerating,
stabilizing, ventilation and air-conditioning machinery, and similar
spaces and the trunks to such spaces.
1.2.34
MARVS is the maximum allowable
relief valve setting of a cargo tank (gauge pressure).
1.2.35
Nominated surveyor is a surveyor
nominated/appointed by an Administration to enforce the provisions
of the SOLAS Convention regulations with regard to inspections and
surveys and the granting of exemptions therefrom.
1.2.36
Oil fuel unit is the equipment
used for the preparation of oil fuel for delivery to an oil-fired
boiler, or equipment used for the preparation for delivery of heated
oil to an internal combustion engine, and includes any oil pressure
pumps, filters and heaters dealing with oil at a pressure of more
than 0.18 MPa gauge.
1.2.37
Organization is the International
Maritime Organization (IMO).
1.2.38
Permeability of a space means
the ratio of the volume within that space which is assumed to be occupied
by water to the total volume of that space.
1.2.39
Port Administration means
the appropriate authority of the country for the port where the ship
is loading or unloading.
1.2.40
Primary barrier is the inner
element designed to contain the cargo when the cargo containment system
includes two boundaries.
1.2.41
Products is the collective
term used to cover the list of gases indicated in chapter 19 of this
Code.
1.2.42
Public spaces are those portions
of the accommodation that are used for halls, dining rooms, lounges
and similar permanently enclosed spaces.
1.2.43
Recognized organization is
an organization authorized by an Administration in accordance with
SOLAS regulation XI-1/1.
1.2.44
Recognized standards are applicable
international or national standards acceptable to the Administration,
or standards laid down and maintained by the recognized organization.
1.2.45
Relative density is the ratio
of the mass of a volume of a product to the mass of an equal volume
of fresh water.
1.2.46
Secondary barrier is the liquid-resisting
outer element of a cargo containment system, designed to afford temporary
containment of any envisaged leakage of liquid cargo through the primary
barrier and to prevent the lowering of the temperature of the ship's
structure to an unsafe level. Types of secondary barrier are more
fully defined in chapter 4.
1.2.47
Separate systems are those
cargo piping and vent systems that are not permanently connected to
each other.
1.2.48
Service spaces are those used
for galleys, pantries containing cooking appliances, lockers, mail
and specie rooms, store-rooms, workshops other than those forming
part of the machinery spaces, and similar spaces and trunks to such
spaces.
1.2.50
Tank cover is the protective
structure intended to either protect the cargo containment system
against damage where it protrudes through the weather deck or to ensure
the continuity and integrity of the deck structure.
1.2.51
Tank dome is the upward extension
of a portion of a cargo tank. In the case of below-deck cargo containment
systems, the tank dome protrudes through the weather deck or through
a tank cover.
1.2.52
Thermal oxidation method means
a system where the boil-off vapours are utilized as fuel for shipboard
use or as a waste heat system subject to the provisions of chapter
16 or a system not using the gas as fuel complying with this Code.
1.2.53
Toxic products are those defined
by a "T" in column "f" in the table of chapter 19.
1.2.54
Turret compartments are those
spaces and trunks that contain equipment and machinery for retrieval
and release of the disconnectable turret mooring system, high-pressure
hydraulic operating systems, fire protection arrangements and cargo
transfer valves.
1.2.55
Vapour pressure is the equilibrium
pressure of the saturated vapour above the liquid, expressed in Pascals
(Pa) absolute at a specified temperature.
1.2.56
Void space is an enclosed
space in the cargo area external to a cargo containment system, other
than a hold space, ballast space, oil fuel tank, cargo pumps or compressor
room, or any space in normal use by personnel.