Summary of Minimum Requirements
LR 19.1-01 The requirements of Chapter 19 of the IGC Code are to
be adhered to.
LR 19.1-02 Consideration should be given to legislation regarding
the known venting of refrigerant gases to the atmosphere. Some refrigerant gases may
not be carried in a Type 3G ship.
For the list of affected refrigerant gases refer to the current
production legislation of Montreal Protocol. The following refrigerant gases are
being commercially produced:
| pentafluoroethane (3220)
|
HFC
|
| 1.1.1.2-tetrafluoroethane (3159)
|
HFC
|
| trifluoromethane (1984)
|
HFC
|
| 1.1.1-trifluoroethane (2035)
|
HFC
|
There are various commercially produced refrigerant blends, containing
non-flammable and flammable (difluoromethane) constituents, which are also
considered as non-flammable refrigerant gases.
LR 19.1-03 Cargoes denoted by an asterisk (*) in column ‘a’ in
the table are also covered by the Rules and Regulations for the Construction and
Classification of Ships for the Carriage of Liquid Chemicals in Bulk.
Explanatory notes to the summary of minimum requirements
| Product name
|
The product name
shall be used in the shipping document for any cargo offered for
bulk shipments. Any additional name may be included in brackets
after the product name. In some cases, the product names are not
identical with the names given in previous issues of the
Code.
|
| (column a)
|
|
(column b)
|
Deleted
|
| Ship type
|
1: Ship type 1G (2.1.2.1)
|
| (column c)
|
2: Ship type 2G (2.1.2.2)
|
|
|
3: Ship type 2PG (2.1.2.3)
|
|
|
4: Ship type 3G
(2.1.2.4)
|
| Independent tank type C
required
|
Type C independent
tank (4.23)
|
| (column d)
|
| Tank environmental control
|
Inert: Inerting (9.4)
|
| (column e)
|
Dry: Drying (17.7)
|
|
|
- : No special requirements
under the Code
|
| Vapour detection
|
F: Flammable vapour detection
|
| (column f)
|
T: Toxic vapour detection
|
|
|
F+T: Flammable and toxic
vapour detection
|
|
|
A: Asphixiant
|
| Gauging
|
I: Indirect or closed (13.2.3.1
and .2)
|
| (column g)
|
R: Indirect, closed or
restricted (13.2.3.1, .2, .3 and .4)
|
|
|
C: Indirect or closed
(13.2.3.1, .2 and .3)
|
|
(column h)
|
Deleted
|
| Special requirements
|
When specific
reference is made to chapters 14 and/or 17, these requirements shall
be additional to the requirements in any other column.
|
| (column i)
|
| Refrigerant gases
|
Non-toxic and non-flammable
gases
|
Unless otherwise specified, gas mixtures containing less than 5% total
acetylenes may be transported with no further requirements than those provided for
the major components.
| a
|
b
|
c
|
d
|
e
|
f
|
g
|
h
|
i
|
| Product
name
|
|
Ship
type
|
Independent tank type C required
|
Control of
vapour space within cargo tanks
|
Vapour
detection
|
Gauging
|
|
Special
requirements
|
| Acetaldehyde
|
|
2G/2PG
|
—
|
Inert
|
F + T
|
C
|
|
14.4.3, 14.3.3.1,
17.4.1, 17.6.1
|
| Ammonia, anhydrous
|
|
2G/2PG
|
—
|
—
|
T
|
C
|
|
14.4, 17.2.1,
17.12
|
| Butadiene (all
isomers)
|
|
2G/2PG
|
—
|
—
|
F + T
|
C
|
|
14.4, 17.2.2,
17.4.2, 17.4.3, 17.6, 17.8
|
| Butane (all isomers)
|
|
2G/2PG
|
—
|
—
|
F
|
R
|
|
|
| Butane-propane mixture
|
|
2G/2PG
|
—
|
—
|
F
|
R
|
|
|
| Butylenes (all
isomers)
|
|
2G/2PG
|
—
|
—
|
F
|
R
|
|
|
| Carbon Dioxide (high
purity)
|
|
3G
|
—
|
—
|
A
|
R
|
|
17.21
|
| Carbon Dioxide (Reclaimed
quality)
|
|
3G
|
—
|
—
|
A
|
R
|
|
17.22
|
| Chlorine
|
|
1G
|
Yes
|
Dry
|
T
|
I
|
|
14.4, 17.3.2,
17.4.1, 17.5, 17.7, 17.9, 17.13
|
| Diethyl ether
*
|
|
2G/2PG
|
—
|
Inert
|
F + T
|
C
|
|
14.4.2, 14.4.3,
17.2.6, 17.3.1, 17.6.1, 17.9, 17.10, 17.11.2, 17.11.3
|
| Dimethylamine
|
|
2G/2PG
|
—
|
—
|
F + T
|
C
|
|
14.4,
17.2.1
|
| Dimethyl Ether
|
|
2G/2PG
|
—
|
—
|
F + T
|
C
|
|
|
| Ethane
|
|
2G
|
—
|
—
|
F
|
R
|
|
|
| Ethyl Chloride
|
|
2G/2PG
|
—
|
—
|
F + T
|
C
|
|
|
| Ethylene
|
|
2G
|
—
|
—
|
F
|
R
|
|
|
| Ethylene oxide
|
|
1G
|
Yes
|
Inert
|
F + T
|
C
|
|
14.4, 17.2.2,
17.3.2, 17.4.1, 17.5, 17.6.1, 17.14
|
| Ethylene oxide-propylene oxide
mixtures with ethylene oxide content of not more than 30% by
weight*
|
|
2G/2PG
|
—
|
Inert
|
F + T
|
C
|
|
14.4.3, 17.3.1,
17.4.1, 17.6.1, 17.9, 17.10, 17.18
|
| Isoprene* (all
isomers)
|
|
2G/2PG
|
—
|
—
|
F
|
R
|
|
14.4.3, 17.8,
17.9, 17.11.1
|
| Isoprene (part
refined)*
|
|
2G/2PG
|
—
|
—
|
F
|
R
|
|
14.4.3, 17.8,
17.9, 17.11.1
|
| Isopropylamine*
|
|
2G/2PG
|
—
|
—
|
F + T
|
C
|
|
14.4.2, 14.4.3,
17.2.4, 17.9, 17.10, 17.11.1, 17.15
|
| Methane (LNG)
|
|
2G
|
—
|
—
|
F
|
C
|
|
|
| Methyl acetylene-propadiene
mixtures
|
|
2G/2PG
|
—
|
—
|
F
|
R
|
|
17.16
|
| Methyl bromide
|
|
1G
|
Yes
|
—
|
F + T
|
C
|
|
14.4, 17.2.3,
17.3.2, 17.4.1, 17.5
|
| Methyl chloride
|
|
2G/2PG
|
—
|
—
|
F + T
|
C
|
|
17.2.3
|
| Mixed C4 Cargoes
|
|
2G/2PG
|
—
|
—
|
F + T
|
C
|
|
14.4, 17.2.2,
17.4.2, 17.4.3, 17.6, 17.20
|
| Monoethylamine*
|
|
2G/2PG
|
—
|
—
|
F + T
|
C
|
|
14.4, 17.2.1,
17.3.1, 17.9, 17.10, 17.11.1, 17.15
|
| Nitrogen
|
|
3G
|
—
|
—
|
A
|
C
|
|
17.17
|
| Pentane (all
isomers)*
|
|
2G/2PG
|
—
|
—
|
F
|
R
|
|
17.9,
17.11
|
| Pentene (all
isomers)*
|
|
2G/2PG
|
—
|
—
|
F
|
R
|
|
17.9,
17.11
|
| Propane
|
|
2G/2PG
|
—
|
—
|
F
|
R
|
|
|
| Propylene
|
|
2G/2PG
|
—
|
—
|
F
|
R
|
|
|
| Propylene oxide*
|
|
2G/2PG
|
—
|
Inert
|
F + T
|
C
|
|
14.4.3, 17.3.1,
17.4.1, 17.6.1, 17.9, 17.10, 17.18
|
| Refrigerant gases
|
|
3G
|
—
|
—
|
—
|
R
|
|
|
| Sulphur dioxide
|
|
1G
|
Yes
|
Dry
|
T
|
C
|
|
14.4, 17.3.2,
17.4.1, 17.5, 17.7
|
| Vinyl chloride
|
|
2G/2PG
|
—
|
—
|
F + T
|
C
|
|
14.4.2, 14.4.3,
17.2.2, 17.2.3, 17.3.1, 17.6, 17.19
|
| Vinyl ethyl
ether*
|
|
2G/2PG
|
—
|
Inert
|
F + T
|
C
|
|
14.4.2, 14.4.3,
17.2.2, 17.3.1, 17.6.1, 17.8, 17.9, 17.10, 17.11.2, 17.11.3
|
| Vinylidene chloride*
|
|
2G/2PG
|
—
|
Inert
|
F + T
|
C
|
|
14.4.2, 14.4.3,
17.2.5, 17.6.1, 17.8, 17.9, 17.10
|
* This cargo is also covered by the IBC Code.
|