4.1 The illustrations of this section apply to
the segregation of cargo transport units which are transported on
board roll-on/roll-off ships or in roll-on/roll-of cargo spacesfootnote.
4.2 To determine locations in which cargo transport
units are not permitted to contain dangerous goods that are incompatible
with those in a reference cargo transport unit, the following method
applies: locations where incompatible dangerous goods are not permitted
with respect to the referenced cargo transport unit are first determined
in the direct fore and aft and athwartships directions. The relevant
segregation distances to be considered in both directions are defined
in metres as shown in the figure. Cargo transport units located partially
or completely within these distances from the reference cargo transport
unit shall not contain dangerous goods that are incompatible with
those in the reference cargo transport unit.
4.3 The standard dimension of a cargo transport
unit used for the illustrations is:
–
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length: 12 m
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–
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width: 2.50 m
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4.4
Explanation of the segregation terms
Note 1:
All bulkheads
and decks shall be resistant to fire and liquid.
Note 2:
When an
illustration has more than one reference cargo transport units, only one should be used
when interpreting the illustration. When an illustration contains several reference
cargo transport units, they have to be considered as different examples.
“AWAY FROM” .1
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CLOSED VERSUS CLOSED OR CLOSED VERSUS
OPEN
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ON DECK
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UNDER DECK
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FORE AND AFT
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No restriction
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No restriction
|
ATHWARTSHIPS
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No restriction
|
No restriction
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1 Situations closed versus closed and closed versus open
Note All bulkheads and decks shall be resistant to fire and
liquids.
“AWAY FROM” .1
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OPEN VERSUS OPEN
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ON DECK
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UNDER DECK
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FORE AND AFT
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At least 3 metres
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At least 3 metres
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ATHWARTSHIPS
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At least 3 metres
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At least 3 metres
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1 Situation open versus open
Note All bulkheads and decks shall be resistant to fire and
liquids.
"SEPARATED FROM" .2
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CLOSED VERSUS CLOSED
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ON DECK
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UNDER DECK
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FORE AND AFT
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At least 6 metres
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At least 6 metres or ONE bulkhead
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ATHWARTSHIPS
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At least 3 metres
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At least 3 metres or ONE bulkhead
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2 Situation closed versus closed
Note All bulkheads and decks shall be resistant to fire and
liquids.
"SEPARATED FROM" .2
|
OPEN VERSUS OPEN
|
ON DECK
|
UNDER DECK
|
FORE AND AFT
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At least 6 metres
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At least 6 metres or ONE bulkhead
|
ATHWARTSHIPS
|
At least 3 metres
|
At least 6 metres or ONE bulkhead
|
2 Situation closed versus open
Note All bulkheads and decks shall be resistant to fire and
liquids.
"SEPARATED FROM" .2
|
OPEN VERSUS OPEN
|
ON DECK
|
UNDER DECK
|
FORE AND AFT
|
At least 6 metres
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At least 12 metres or ONE bulkhead
|
ATHWARTSHIPS
|
At least 6 metres
|
At least 12 metres or ONE bulkhead
|
2 Situation open versus open
Note All bulkheads and decks shall be resistant to fire and
liquids.
"SEPARATED BY A COMPLETE COMPARTMENT OR HOLD
FROM" .3
|
CLOSED VERSUS CLOSED
|
ON DECK
|
UNDER DECK
|
FORE AND AFT
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At least 12 metres
|
At least 24 metres + deck
|
ATHWARTSHIPS
|
At least 12 metres
|
At least 24 metres + deck
|
3 Situation closed versus closed
Note All bulkheads and decks shall be resistant to fire and
liquids.
"SEPARATED BY A COMPLETE COMPARTMENT OR HOLD
FROM" .3
|
CLOSED VERSUS OPEN
|
ON DECK
|
UNDER DECK
|
FORE AND AFT
|
At least 24 metres
|
At least 24 metres + deck
|
ATHWARTSHIPS
|
At least 24 metres
|
At least 24 metres + deck
|
3 Situation closed versus open
Note All bulkheads and decks shall be resistant to fire and
liquids.
"SEPARATED BY A COMPLETE COMPARTMENT OR HOLD
FROM" .3
|
OPEN VERSUS OPEN
|
ON DECK
|
UNDER DECK
|
FORE AND AFT
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At least 36 metres
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Two decks or TWO bulkheads
|
ATHWARTSHIPS
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Prohibited
|
Prohibited
|
3 Situation open versus open
Note All bulkheads and decks shall be resistant to fire and
liquids.
"SEPARATED LONGITUDINALLY BY AN INTERVENING
COMPLETE COMPARTMENT OR HOLD FROM" .4
|
CLOSED VERSUS CLOSED
|
ON DECK
|
UNDER DECK
|
FORE AND AFT
|
At least 36 metres
|
Two bulkheads or at least 36 metres +
two decks
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ATHWARTSHIPS
|
Prohibited
|
Prohibited
|
4 Situation closed versus closed
Note All bulkheads and decks shall be resistant to fire and
liquids.
"SEPARATED LONGITUDINALLY BY AN INTERVENING
COMPLETE COMPARTMENT OR HOLD FROM" .4
|
CLOSED VERSUS OPEN
|
ON DECK
|
UNDER DECK
|
FORE AND AFT
|
At least 36 metres
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At least 48 m including TWO bulkheads
|
ATHWARTSHIPS
|
Prohibited
|
Prohibited
|
4 Situation closed versus open
Note All bulkheads and decks shall be resistant to fire and
liquids.
"SEPARATED LONGITUDINALLY BY AN INTERVENING
COMPLETE COMPARTMENT OR HOLD FROM" .4
|
CLOSED VERSUS OPEN
|
ON DECK
|
UNDER DECK
|
FORE AND AFT
|
At least 48 metres
|
Prohibited
|
ATHWARTSHIPS
|
Prohibited
|
Prohibited
|
4 Situation open versus open
Note All bulkheads and decks shall be resistant to fire and
liquids.