The test pressure for tanks intended for the carriage of:
- high pressure liquefied gases; and
- dissolved gases
shall be such that, when the shell is filled to the maximum filling ratio, the pressure reached in the
shell by the substance at 55 °C for tanks with thermal insulation or 65 °C for tanks without thermal
insulation does not exceed the test pressure.

The test pressure for tanks intended for the carriage of low pressure liquefied gases will be:
(a) If the tank is equipped with thermal insulation, at least equal to the vapour pressure, reduced by
0.1 MPa (1 bar) of the liquid at 60 °C, but not less than 1 MPa (10 bar);
(b) If the tank is not equipped with thermal insulation, at least equal to the vapour pressure,
reduced by 0.1 MPa (1 bar), of the liquid at 65 °C, but not less than 1 MPa (10 bar).
The maximum permissible mass of contents per litre of capacity is calculated as follows:
Maximum permissible mass of contents per litre of capacity = 0.95 × density of the liquid phase
at 50 °C (in kg/l)
Moreover the vapour phase shall not disappear below 60 °C.
If the shells are not more than 1.5 m in diameter, the values of the test pressure and maximum filling
ratio conforming to packing instruction P200 in 4.1.4.1 shall be applicable.

The test pressure for tanks intended for the carriage of refrigerated liquefied gases shall be not less
than 1.3 times the maximum allowable working pressure and indicated on the tank but not less
than 300 kPa (3 bar) (gauge pressure); for tanks with vacuum insulation the test pressure shall be not
less than 1.3 times the maximum allowable working pressure increased by 100 kPa (1 bar).

Table of gases and gas mixtures which may be carried in fixed tanks (tank-vehicles), battery-vehicles,
demountable tanks, tank-containers or MEGCs indicating the minimum test pressure for tanks and as
far as applicable the filling ratio
In the case of gases and gas mixtures classified under n.o.s. entries, the values of the test pressure and
the filling ratio shall be prescribed by the expert approved by the competent authority.
When tanks for compressed or high pressure liquefied gases have been subjected to a test pressure
lower than shown in the table, and the tanks are fitted with thermal insulation, a lower maximum load
may be prescribed by the expert approved by the competent authority, provided that the pressure
reached in the tank by the substance at 55 °C does not exceed the test pressure stamped on the tank.
 
 

UN

No.

Name

Classification code

Minimum test pressure for tanks

Maximum permissible mass of contents per litre of capacity

With thermal insulation

Without thermal insulation

MPa

bar

MPa

bar

kg

1001

Acetylene, dissolved

4 F

only in battery-vehicles and MEGCs composed of receptacles

1002

Air, compressed

1 A

see 4.3.3.2.1

1003

Air, refrigerated liquid

3 O

see 4.3.3.2.4

1005

Ammonia, anhydrous

2 TC

2.6

26

2.9

29

0.53

1006

Argon, compressed

1 A

see 4.3.3.2.1

1008

Boron trifluoride

2 TC

22.5

225

22.5

225

0.715

30

300

30

300

0.86

1009

Bromotrifluoromethane (Refrigerant gas R13B1)

2 A

12

120

   

1.50

   

4.2

42

1.13

   

12

120

1.44

   

25

250

1.60

1010

BUTADIENES, STABILIZED (1,2-

butadiene) or

2 F

1

10

1

10

0.59

1010

BUTADIENES, STABILIZED (1,3-

butadiene) or

2 F

1

10

1

10

0.55

1010

BUTADIENES AND HYDROCARBON, MIXTURE, STABILIZED

 

2 F

 

1

 

10

 

1

 

10

 

0.50

1011

Butane

2 F

1

10

1

10

0.51

1012

1-butylene or

2 F

1

10

1

10

0.53

1012

trans-2-butylene or

2 F

1

10

1

10

0.54

1012

cis-2-butylene or

2 F

1

10

1

10

0.55

1012

butylenes mixture

2 F

1

10

1

10

0.50

1013

Carbon dioxide

2 A

19

190

   

0.73

22.5

225

   

0.78

   

19

190

0.66

   

25

250

0.75

1016

Carbon monoxide, compressed

1 TF

see 4.3.3.2.1

1017

Chlorine

2 TOC

1.7

17

1.9

19

1.25

1018

Chlorodifluoromethane (Refrigerant gas R22)

2 A

2.4

24

2.6

26

1.03

1020

Chloropentafluoroethane (Refrigerant gas R115)

2 A

2

20

2.3

23

1.08

1021

1-chloro-1,2,2,2- tetrafluoroethane (Refrigerant gas R124)

2 A

1

10

1.1

11

1.2

1022

Chlorotrifluoromethane (Refrigerant gas R13)

2 A

12

120

   

0.96

22.5

225

   

1.12

   

10

100

0.83

   

12

120

0.90

   

19

190

1.04

   

25

250

1.10

1023

Coal gas, compressed

TF

see 4.3.3.2.1

1026

Cyanogen

2 TF

10

100

10

100

0.70

1027

Cyclopropane

2 F

1.6

16

1.8

18

0.53

UN

No.

Name

Classification code

Minimum test pressure for tanks

Maximum permissible mass of contents per litre of capacity

With thermal insulation

Without thermal insulation

MPa

bar

MPa

bar

kg

1028

Dichlorodifluoromethane (Refrigerant gas R12)

2 A

1.5

15

1.6

16

1.15

1029

Dichlorofluoromethane (Refrigerant gas R21)

2 A

1

10

1

10

1.23

1030

1,1-difluoroethane (Refrigerant gas R152a)

2 F

1.4

14

1.6

16

0.79

1032

Dimethylamine, anhydrous

2 F

1

10

1

10

0.59

1033

Dimethyl ether

2 F

1.4

14

1.6

16

0.58

1035

Ethane

2 F

12

120

   

0.32

   

9.5

95

0.25

   

12

120

0.29

   

30

300

0.39

1036

Ethylamine

2 F

1

10

1

10

0.61

1037

Ethyl chloride

2 F

1

10

1

10

0.8

1038

Ethylene, refrigerated liquid

3 F

see 4.3.3.2.4

1039

Ethyl methyl ether

2 F

1

10

1

10

0.64

1040

Ethylene oxide with nitrogen up to a total pressure of 1MPa (10 bar) at 50 °C

2 TF

1.5

15

1.5

15

0.78

1041

Ethylene oxide and carbon dioxide mixture, with more than 9% but not more than 87% ethylene oxide

2 F

2.4

24

2.6

26

0.73

1046

Helium, compressed

1 A

see 4.3.3.2.1

1048

Hydrogen bromide, anhydrous

2 TC

5

50

5.5

55

1.54

1049

Hydrogen, compressed

1 F

see 4.3.3.2.1

1050

Hydrogen chloride, anhydrous

2 TC

12

120

   

0.69

   

10

100

0.30

   

12

120

0.56

   

15

150

0.67

   

20

200

0.74

1053

Hydrogen sulphide

2 TF

4.5

45

5

50

0.67

1055

Isobutylene

2 F

1

10

1

10

0.52

1056

Krypton, compressed

1 A

see 4.3.3.2.1

1058

Liquefied gases, non flammable, charged with nitrogen, carbon dioxide or air

2 A

1.5  filling pressure see 4.3.3.2.2 or 4.3.3.2.3

1060

Methylacetylene and propadiene mixture, stabilized:

2 F

see 4.3.3.2.2 or 4.3.3.2.3

mixture P1

2 F

2.5

25

2.8

28

0.49

mixture P2

2 F

2.2

22

2.3

23

0.47

propadiene with 1% to 4% methylacetylene

2 F

2.2

22

2.2

22

0.50

1061

Methylamine, anhydrous

2 F

1

10

1.1

11

0.58

1062

Methyl bromide with not more than 2% chloropicrin

2 T

1

10

1

10

1.51

1063

Methyl chloride (Refrigerant gas R40)

2 F

1.3

13

1.5

15

0.81

1064

Methyl mercaptan

2 TF

1

10

1

10

0.78

1065

Neon, compressed

1 A

see 4.3.3.2.1

1066

Nitrogen, compressed

1 A

see 4.3.3.2.1

1067

Dinitrogen tetroxide (nitrogen dioxide)

2 TOC

only in battery-vehicles and MEGCs composed of receptacles

1070

Nitrous oxide

2 O

22.5

225

   

0.78

   

18

180

0.68

   

22.5

225

0.74

   

25

250

0.75

1071

Oil gas, compressed

1 TF

see 4.3.3.2.1

1072

Oxygen, compressed

1 O

see 4.3.3.2.1

 

UN

No.

Name

Classification code

Minimum test pressure for tanks

Maximum permissible mass of contents per litre of capacity

With thermal insulation

Without thermal insulation

MPa

bar

MPa

bar

kg

1073

Oxygen, refrigerated liquid

3 O

see 4.3.3.2.4

1075

Petroleum gases, liquefied

2 F

See 4.3.3.2.2 or 4.3.3.2.3

1076

Phosgene

2 TC

only in battery-vehicles and MEGCs composed of receptacles

1081

Tetrafluoroethylene, stabilized

2 F

only in battery-vehicles and MEGCs composed of seamless receptacles

1077

Propylene

2 F

2.5

25

2.7

27

0.43

1078

Refrigerant gases, n.o.s. such as:

2 A

         

mixture F1

2 A

1

10

1.1

11

1.23

mixture F2

2 A

1.5

15

1.6

16

1.15

mixture F3

2 A

2.4

24

2.7

27

1.03

other mixtures

2 A

see 4.3.3.2.2 or 4.3.3.2.3

1079

Sulphur dioxide

2 TC

1

10

1.2

12

1.23

1080

Sulphur hexafluoride

2 A

12

120

   

1.34

   

7

70

1.04

   

14

140

1.33

   

16

160

1.37

1082

Trifluorochloroethylene, stabilized (Refrigerant gas R1113)

2 TF

1.5

15

1.7

17

1.13

1083

Trimethylamine, anhydrous

2 F

1

10

1

10

0.56

1085

Vinyl bromide, stabilized

2 F

1

10

1

10

1.37

1086

Vinyl chloride, stabilized

2 F

1

10

1.1

11

0.81

1087

Vinyl methyl ether, stabilized

2 F

1

10

1

10

0.67

1581

Chloropicrin and methyl bromide mixture with more than 2% chloropicrin

2 T

1

10

1

10

1.51

1582

Chloropicrin and methyl chloride mixture

2 T

1.3

13

1.5

15

0.81

1612

Hexaethyl tetraphosphate and compressed gas mixture

1 T

see 4.3.3.2.1

1749

Chlorine trifluoride

2 TOC

3

30

3

30

1.40

1858

Hexafluoropropylene (Refrigerant gas R 1216)

2A

1.7

17

1.9

19

1.11

1859

Silicon tetrafluoride

2 TC

20

30

200

300

20

30

200

300

0.74

1.10

1860

Vinyl fluoride, stabilized

2 F

12

120

   

0.58

22.5

225

   

0.65

   

25

250

0.64

1912

Methyl chloride and methylene chloride mixture

2 F

1.3

13

1.5

15

0.81

1913

Neon, refrigerated liquid

3 A

see 4.3.3.2.4

1951

Argon, refrigerated liquid

3 A

see 4.3.3.2.4

1952

Ethylene oxide and carbon dioxide mixture, with not more than 9% ethylene oxide

2 A

19

190

19

190

0.66

25

250

25

250

0.75

1953

Compressed gas, toxic, flammable, n.o.s.a

1 TF

see 4.3.3.2.1 or 4.3.3.2.2

1954

Compressed gas, flammable n.o.s.

1 F

see 4.3.3.2.1 or 4.3.3.2.2

1955

Compressed gas, toxic, n.o.s.a

1 T

see 4.3.3.2.1 or 4.3.3.2.2

1956

Compressed gas, n.o.s.

1 A

see 4.3.3.2.1 or 4.3.3.2.2

1957

Deuterium, compressed

1 F

see 4.3.3.2.1

1958

1,2-dichloro-1,1,2,2-tetrafluoroethane (Refrigerant gas R114)

2 A

1

10

1

10

1.3

1959

1,1-difluoroethylene (Refrigerant gas R1132a)

2 F

12

120

   

0.66

22.5

225

   

0.78

 

Allowed if LC50 equal to or greater than 200 ppm.

UN

No.

Name

Classification code

Minimum test pressure for tanks

Maximum permissible mass of contents per litre of capacity

With thermal insulation

Without thermal insulation

MPa

bar

MPa

bar

kg

   

25

250

0.77

1961

Ethane, refrigerated liquid

3 F

see 4.3.3.2.4

1962

Ethylene

2 F

12

120

   

0.25

22.5

225

   

0.36

   

22.5

225

0.34

   

30

300

0.37

1963

Helium, refrigerated liquid

3 A

see 4.3.3.2.4

1964

Hydrocarbon gas mixture, compressed, n.o.s.

1 F

see 4.3.3.2.1 or 4.3.3.2.2

1965

Hydrocarbon gas mixture, liquefied, n.o.s.:

2 F

 

Mixture A

2 F

1

10

1

10

0.50

Mixture A01

2 F

1.2

12

1.4

14

0.49

Mixture A02

2 F

1.2

12

1.4

14

0.48

Mixture A0

2 F

1.2

12

1.4

14

0.47

Mixture A1

2 F

1.6

16

1.8

18

0.46

Mixture B1

2 F

2

20

2.3

23

0.45

Mixture B2

2 F

2

20

2.3

23

0.44

Mixture B

2 F

2

20

2.3

23

0.43

Mixture C

2 F

2.5

25

2.7

27

0.42

Other mixtures

2 F

see 4.3.3.2.2 or 4.3.3.2.3

1966

Hydrogen, refrigerated liquid

3 F

see 4.3.3.2.4

1967

Insecticide gas, toxic, n.o.s.a

2 T

see 4.3.3.2.2 or 4.3.3.2.3

1968

Insecticide gas, n.o.s.

2 A

see 4.3.3.2.2 or 4.3.3.2.3

1969

Isobutane

2 F

1

10

1

10

0.49

1970

Krypton, refrigerated liquid

3 A

see 4.3.3.2.4

1971

Methane, compressed or natural gas, compressed with high methane content

1 F

see 4.3.3.2.1

1972

Methane, refrigerated liquid or natural gas, refrigerated liquid with high methane content

3 F

see 4.3.3.2.4

1973

Chlorodifluoromethane and chloropentafluoroethane mixture with fixed boiling point, with approximately 49% chlorodifluoromethane (Refrigerant gas R502)

2 A

2.5

25

2.8

28

1.05

1974

Chlorodifluorobromomethane (Refrigerant gas R12B1)

2 A

1

10

1

10

1.61

1976

Octafluorocyclobutane (Refrigerant gas RC318)

2 A

1

10

1

10

1.34

1977

Nitrogen, refrigerated liquid

3 A

see 4.3.3.2.4

1978

Propane

2 F

2.1

21

2.3

23

0.42

1982

Tetrafluoromethane (Refrigerant gas R14)

2 A

20

200

20

200

0.62

30

300

30

300

0.94

1983

1-chloro-2,2,2-trifluoroethane (Refrigerant gas R133a)

2 A

1

10

1

10

1.18

1984

Trifluoromethane (Refrigerant gas R23)

2 A

19

190

   

0.92

25

250

   

0.99

   

19

190

0.87

   

25

250

0.95

2034

Hydrogen and methane mixture, compressed

1 F

see 4.3.3.2.1

2035

1,1,1-trifluoroethane (Refrigerant gas R143a)

2 F

2.8

28

3.2

32

0.79

2036

Xenon

2 A

12

120

   

1.30

   

13

130

1.24

2044

2,2-dimethylpropane

2 F

1

10

1

10

0.53

 

UN

No.

Name

Classification code

Minimum test pressure for tanks

Maximum permissible mass of contents per litre of capacity

With thermal insulation

Without thermal insulation

MPa

bar

MPa

bar

kg

2073

Ammonia solutions, relative density less than 0.880 at 15 °C in water:

4 A

 

with more than 35% and not more than 40% ammonia

4 A

1

10

1

10

0.80

with more than 40% and not more than 50% ammonia

4 A

1.2

12

1.2

12

0.77

2187

Carbon dioxide, refrigerated liquid

3 A

see 4.3.3.2.4

2189

Dichlorosilane

2 TFC

1

10

1

10

0.90

2191

Sulfuryl fluoride

2 T

5

50

5

50

1.1

2193

Hexafluoroethane (Refrigerant gas R116)

2 A

16

160

   

1.28

20

200

   

1.34

   

20

200

1.10

2197

Hydrogen iodide, anhydrous

2 TC

1.9

19

2.1

21

2.25

2200

Propadiene, stabilized

2 F

1.8

18

2.0

20

0.50

2201

Nitrous oxide, refrigerated liquid

3 O

see 4.3.3.2.4

2203

Silane b

2 F

22.5

225

22.5

225

0.32

25

250

25

250

0.36

2204

Carbonyl sulphide

2 TF

2.7

27

3.0

30

0.84

2417

Carbonyl fluoride

2 TC

20

200

20

200

0.47

30

300

30

300

0.70

2419

Bromotrifluoroethylene

2 F

1

10

1

10

1.19

2420

Hexafluoroacetone

2 TC

1.6

16

1.8

18

1.08

2422

Octafluorobut-2-ene (Refrigerant gas R1318)

2 A

1

10

1

10

1.34

2424

Octafluoropropane (Refrigerant gas R218)

2 A

2.1

21

2.3

23

1.07

2451

Nitrogen trifluoride

2 O

20

200

20

200

0.50

30

300

30

300

0.75

2452

Ethylacetylene, stabilized

2 F

1

10

1

10

0.57

2453

Ethyl fluoride (Refrigerant gas R161)

2 F

2.1

21

2.5

25

0.57

2454

Methyl fluoride (Refrigerant gas R41)

2 F

30

300

30

300

0.36

2517

1-chloro-1,1-difluoroethane (Refrigerant gas R142b)

2 F

1

10

1

10

0.99

2591

Xenon, refrigerated liquid

3 A

see 4.3.3.2.4

2599

Chlorotrifluoromethane and trifluoromethane, azeotropic mixture with approximately

60% chlorotrifluoromethane (Refrigerant gas R503)

2 A

3.1

31

3.1

31

0.11

4.2

42

   

0.21

10

100

   

0.76

   

4.2

42

0.20

   

10

100

0.66

2601

Cyclobutane

2 F

1

10

1

10

0.63

2602

Dichlorodifluoromethane and difluoro-1,1 ethane, azeotropic mixture with approximately 74% dichlorodifluoromethane (Refrigerant gas R500)

2 A

1.8

18

2

20

1.01

2901

Bromine chloride

2 TOC

1

10

1

10

1.50

3057

Trifluoroacetyl chloride

2 TC

1.3

13

1.5

15

1.17

3070

Ethylene oxide and dichlorodifluoromethane mixture with not more than 12.5% ethylene oxide

2 A

1.5

15

1.6

16

1.09

3083

Perchloryl fluoride

2 TO

2.7

27

3.0

30

1.21

3136

Trifluoromethane, refigerated liquid

3 A

See 4.3.3.2.4

 

Considered as pyrophoric.

 

UN

No.

Name

Classification code

Minimum test pressure for tanks

Maximum permissible mass of contents per litre of capacity

With thermal insulation

Without thermal insulation

MPa

bar

MPa

bar

kg

3138

Ethylene, acetylene propylene in mixture, refrigerated liquid, containing at least 71.5% ethylene with not more than 22.5% acetylene and not more than 6% propylene

3 F

see 4.3.3.2.4

3153

Perfluoro(methyl vinyl ether)

2 F

1.4

14

1.5

15

1.14

3154

Perfluoro(ethyl vinyl ether)

2 F

1

10

1

10

0.98

3156

Compressed gas, oxidizing, n.o.s.

1 O

see 4.3.3.2.1 or 4.3.3.2.2

3157

Liquefied gas, oxidizing, n.o.s.

2 O

see 4.3.3.2.2 or 4.3.3.2.3

3158

Gas, refrigerated liquid, n.o.s.

3 A

see 4.3.3.2.4

3159

1,1,1,2-tetrafluoroethane (Refrigerant gas R134a)

2 A

1.6

16

1.8

18

1.04

3160

Liquefied gas, toxic, flammable, n.o.s. a

2 TF

see 4.3.3.2.2 or 4.3.3.2.3

3161

Liquefied gas, flammable, n.o.s.

2 F

see 4.3.3.2.2 or 4.3.3.2.3

3162

Liquefied gas, toxic, n.o.s. a

2 T

see 4.3.3.2.2 or 4.3.3.2.3

3163

Liquefied gas, n.o.s.

2 A

see 4.3.3.2.2 or 4.3.3.2.3

3220

Pentafluoroethane (Refrigerant gas R125)

2 A

4.1

41

4.9

49

0.95

3252

Difluoromethane (Refrigerant gas R32)

2 F

3.9

39

4.3

43

0.78

3296

Heptafluoropropane (Refrigerant gas R227)

2 A

1.4

14

1.6

16

1.20

3297

Ethylene oxide and chlorotetrafluoroethane mixture, with not more than 8.8% ethylene oxide

2 A

1

10

1

10

1.16

3298

Ethylene oxide and pentafluoroethane mixture, with not more than 7.9% ethylene oxide

2 A

2.4

24

2.6

26

1.02

3299

Ethylene oxide and tetrafluoroethane mixture, with not more than 5.6% ethylene oxide

2 A

1.5

15

1.7

17

1.03

3300

Ethylene oxide and carbon dioxide mixture, with more than 87% ethylene oxide

2 TF

2.8

28

2.8

28

0.73

3303

Compressed gas, toxic, oxidizing, n.o.s.a

1 TO

see 4.3.3.2.1 or 4.3.3.2.2

3304

Compressed gas, toxic, corrosive, n.o.s.a

1 TC

see 4.3.3.2.1 or 4.3.3.2.2

3305

Compressed gas, toxic, flammable, corrosive, n.o.s. a

1 TFC

see 4.3.3.2.1 or 4.3.3.2.2

3306

Compressed gas, toxic, oxidizing, corrosive, n.o.s. a

1 TOC

see 4.3.3.2.1 or 4.3.3.2.2

3307

Liquefied gas, toxic, oxidizing, n.o.s. a

2 TO

see 4.3.3.2.2 or 4.3.3.2.3

3308

Liquefied gas, toxic, corrosive, n.o.s. a

2 TC

see 4.3.3.2.2 or 4.3.3.2.3

3309

Liquefied gas, toxic, flammable, corrosive, n.o.s. a

2 TFC

see 4.3.3.2.2 or 4.3.3.2.3

3310

Liquefied gas, toxic, oxidizing, corrosive, n.o.s. a

2 TOC

see 4.3.3.2.2 or 4.3.3.2.3

3311

Gas, refrigerated liquid, oxidizing, n.o.s.

3 O

see 4.3.3.2.4

3312

Gas, refrigerated liquid, flammable, n.o.s.

3 F

see 4.3.3.2.4

3318

Ammonia solutions, relative density less than 0.880 at 15 °C in water, with more than 50% ammonia

4 TC

see 4.3.3.2.2

3337

Refrigerant gas R404A

2 A

2.9

29

3.2

32

0.84

3338

Refrigerant gas R407A

2 A

2.8

28

3.2

32

0.95

3339

Refrigerant gas R407B

2 A

3.0

30

3.3

33

0.95

 

Allowed if LC50 equal to or greater than 200 ppm.

 

UN

No.

Name

Classification code

Minimum test pressure for tanks

Maximum permissible mass of contents per litre of capacity

With thermal insulation

Without thermal insulation

MPa

bar

MPa

bar

kg

3340

Refrigerant gas R407C

2 A

2.7

27

3.0

30

0.95

3354

Insecticide gas, flammable, n.o.s.

2 F

see 4.3.3.2.2 or 4.3.3.2.3

3355

Insecticide gas, toxic, flammable, n.o.s.a

2 TF

see 4.3.3.2.2 or 4.3.3.2.3

Allowed if LC50 equal to or greater than 200 ppm.

Operation

When tanks, batteryvehicles
or MEGCs are approved for different gases, the change of use shall
include emptying, purging and evacuation operations to the extent necessary for safe operation.

When tanks, batteryvehicles
or MEGCs are handed over for carriage, only the particulars specified in
6.8.3.5.6 applicable to the gas loaded or just discharged shall be visible; all particulars concerning
other gases shall be covered up.

All the elements of a batteryvehicle
or MEGC shall contain only one and the same gas.

When the external overpressure could be greater than the tank resistance to external pressure (e.g. due
to low ambient temperatures), adequate measures shall be taken to protect tanks carrying low pressure
liquefied gases against the risk of deformation, e.g. by filling them with nitrogen or another inert gas
in order to maintain sufficient pressure inside the tank.

(Reserved)

                                                                                        
The actual holding time shall be determined for
each journey of a tank-container carrying a
refrigerated liquefied gas on the basis of the
following:
(a) The reference holding time for the
refrigerated liquefied gas to be carried (see
6.8.3.4.10) as indicated on the plate referred
to in 6.8.3.5.4;
(b) The actual filling density;
(c) The actual filling pressure;
(d) The lowest set pressure of the pressure
limiting device(s);
(e) The deterioration of the insulation4.
NOTE: ISO 21014:2006 ‘Cryogenic vessels –
Cryogenic insulation performance’ details methods
of determining the insulation performance of
cryogenic vessels and provides a method of
calculating the holding time.
The date at which the actual holding time ends shall
be entered in the transport document (see 5.4.1.2.2.
(d)).
Tank-containers shall not be offered for carriage:
(a) In an ullage condition liable to produce an
unacceptable hydraulic force due to surge
within the shell;
(b) When leaking;
(c) When damaged to such an extent that the
integrity of the tank-container or its lifting or
securing arrangements may be affected;
(d) Unless the service equipment has been
examined and found to be in good working
order;
(e) Unless the actual holding time for the
refrigerated liquefied gas being carried has
been determined;
(f) Unless the duration of carriage, after taking
into consideration any delays which might be
encountered, does not exceed the actual
holding time;
(g) Unless the pressure is steady and has been
lowered to a level such that the actual holding
time may be achieved4.
4 Guidance is provided in the European Industrial Gases Association (EIGA) document “Methods to prevent the
premature activation of relief devices on tanks” available at www.eiga.eu.
 
 

Special provisions applicable to Classes 1 and 3 to 9

Coding, rationalized approach and hierarchy of tanks

Coding of tanks

Part

Description

Tank code

1

Types of tank

L = tank for substances in the liquid state (liquids or solids handed over for carriage in the molten state);

 

S = tank for substances in the solid state (powdery or granular).

2

Calculation pressure

G = minimum calculation pressure according to the general requirements of 6.8.2.1.14; or

 

1.5; 2.65; 4; 10; 15 or 21=

minimum calculation pressure in bar (see 6.8.2.1.14).

3

Openings

(see 6.8.2.2.2)

A = tank with bottom-filling or bottom-discharge openings with 2 closures;

   

B = tank with bottom-filling or bottom-discharge openings with 3 closures;

 

C = tank with top-filling and discharge openings with only cleaning openings below the surface of the liquid;

 

D = tank with top-filling and discharge openings with no openings below the surface of the liquid.

4

Safety valves/devices

V = tank with a breather device, according to 6.8.2.2.6, but no device protecting against the propagation of a flame; or

non-explosion pressure shock resistant tank ;

 

F = tank with a breather device, according to 6.8.2.2.6, fitted with a device protecting against the propagation of a flame; or

explosion pressure shock resistant tank ;

 

N = tank without a breather device according to 6.8.2.2.6 and not hermetically closed;

   

B = tank with bottom-filling or bottom-discharge openings with 3 closures;

 

C = tank with top-filling and discharge openings with only cleaning openings below the surface of the liquid;

 

D = tank with top-filling and discharge openings with no openings below the surface of the liquid.

 

Rationalized approach for assignment of ADR tank codes to groups of substances and hierarchy of
tanks
NOTE: Certain substances and groups of substances are not included in the rationalized approach,
see 4.3.4.1.3.
 

ationalized approach

Tank code

Group of permitted substances

Class

Classification code

Packing group

LIQUIDS

LGAV

3

F2

III

9

M9

III

LGBV

4.1

F2

II, III

5.1

O1

III

9

M6

III

M11

III

and groups of permitted substances for tank code LGAV

LGBF

3

F1

II

vapour pressure at 50 °C ≤ 1.1 bar

F1

III

D

II

vapour pressure at 50 °C ≤ 1.1 bar

D

III

and groups of permitted substances for tank codes LGAV and LGBV

L1.5BN

3

F1

II

vapour pressure at 50 °C > 1.1 bar

F1

III

flash-point < 23 °C, viscous, vapour pressure at 50 °C > 1.1 bar boiling point > 35 °C

D

II

vapour pressure at 50 °C > 1.1 bar

and groups of permitted substances for tank codes LGAV, LGBV and LGBF

L4BN

3

F1

I,

III boiling point ≤ 35 °C

FC

III

D

I

5.1

O1

I, II

OT1

I

8

C1

II, III

C3

II, III

C4

II, III

C5

II, III

C7

II, III

C8

II, III

C9

II, III

C10

II, III

CF1

II

CF2

II

CS1

II

CW1

II

CW2

II

CO1

II

CO2

II

CT1

II, III

CT2

II, III

CFT

II

9

M11

III

and groups of permitted substances for tank codes LGAV, LGBV, LGBF and L1.5BN

Rationalized approach

Tank code

Group of permitted substances

Class

Classification code

Packing group

L4BH

3

FT1

II, III

FT2

II

FC

II

FTC

II

6.1

T1

II, III

T2

II, III

T3

II, III

T4

II, III

T5

II, III

T6

II, III

T7

II, III

TF1

II

TF2

II, III

TF3

II

TS

II

TW1

II

TW2

II

TO1

II

TO2

II

TC1

II

TC2

II

TC3

II

TC4

II

TFC

II

6.2

I3

II

I4

 

9

M2

II

and groups of permitted substances for tank codes LGAV, LGBV, LGBF, L1.5BN and L4BN

L4DH

4.2

S1

II, III

S3

II, III

ST1

II, III

ST3

II, III

SC1

II, III

SC3

II, III

4.3

W1

II, III

WF1

II, III

WT1

II, III

WC1

II, III

8

CT1

II, III

and groups of permitted substances for tank codes LGAV, LGBV, LGBF, L1.5BN, L4BN and L4BH

L10BH

8

C1

I

C3

I

C4

I

C5

I

C7

I

C8

I

C9

I

C10

I

CF1

I

СF2

I

CS1

I

СW1

I

СW2

I

CO1

I

CO2

I

CT1

I

CT2

I

COT

I

and groups of permitted substances for tank codes LGAV, LGBV, LGBF, L1.5BN, L4BN, and L4BH

Rationalized approach

Tank code

Group of permitted substances

Class

Classification code

Packing group

L10CH

3

FT1

I

FT2

I

FC

I

FTC

I

6.1*

T1

I

T2

I

T3

I

T4

I

T5

I

T6

I

T7

I

TF1

I

TF2

I

TF3

I

TS

I

TW1

I

TO1

I

TC1

I

TC2

I

TC3

I

TC4

I

TFC

I

TFW

I

and groups of permitted substances for tank codes LGAV, LGBV, LGBF, L1.5BN, L4BN, L4BH, and L10BH

Substances with an LC50 lower than or equal to 200 ml/mand saturated vapour concentration greater than or equal to 500 LC50 shall be assigned to tank code L15CH.

L10DH

4.3

W1

I

WF1

I

WT1

I

WC1

I

WFC

I

5.1

OTC

I

8

CT1

I

and groups of permitted substances for tank codes LGAV, LGBV, LGBF, L1.5BN, L4BN, L4BH, L4DH, L10BH and L10CH

L15CH

3

FT1

I

6.1**

T1

I

T4

I

TF1

I

TW1

I

TO1

I

TC1

I

TC3

I

TFC

I

TFW

I

and groups of permitted substances for tank codes LGAV, LGBV, LGBF, L1.5BN, L4BN, L4BH, L10BH and L10CH

** Substances with an LC50 lower than or equal to 200 ml/mand saturated vapour concentration greater than or equal to 500 LC50 shall be assigned to this tank code.

L21DH

4.2

S1

I

S3

I

SW

I

ST3

I

and groups of permitted substances for tank codes LGAV, LGBV, LGBF, L1.5BN, L4BN, L4BH, L4DH, L10BH, L10CH, L10DH and L15CH

Rationalized approach

Tank code

Group of permitted substances

Class

Classification code

Packing group

SOLIDS

SGAV

4.1

F1

III

F3

III

4.2

S2

II, III

   

S4

III

5.1

O2

II, III

8

C2

II, III

C4

III

C6

III

C8

III

C10

II, III

СT2

III

9

M7

III

M11

II, III

SGAN

4.1

F1

II

F3

II

FT1

II, III

FT2

II, III

FC1

II, III

FC2

II, III

4.2

S2

II

S4

II, III

ST2

II, III

ST4

II, III

SC2

II, III

SC4

II, III

4.3

W2

II, III

WF2

II

WS

II, III

WT2

II, III

WC2

II, III

5.1

O2

II, III

OT2

II, III

OC2

II, III

8

C2

II

С4

II

С6

II

С8

II

С10

II

CF2

II

CS2

II

CW2

II

CO2

II

CT2

II

9

M3

III

and groups of permitted substances for tank codes SGAV

SGAH

6.1

T2

II, III

T3

II, III

T5

II, III

T7

II, III

T9

II

TF3

II

TS

II

TW2

II

TO2

II

TC2

II

TC4

II

9

M1

II, III

and groups of permitted substances for tanks codes SGAV and SGAN

Rationalized approach

Tank code

Group of permitted substances

Class

Classification code

Packing group

S4AH

6.2

I3

II

9

M2

II

and groups of permitted substances for tanks codes SGAV, SGAN and SGAH

S10AN

8

C2

I

C4

I

   

C6

I

C8

I

C10

I

CF2

I

CS2

I

CW2

I

CO2

I

CT2

I

and groups of permitted substances for tank codes SGAV and SGAN

S10AH

6.1

T2

I

T3

I

T5

I

T7

I

TS

I

TW2

I

TO2

I

TC2

I

TC4

I

and groups of permitted substances for tank codes SGAV, SGAN, SGAH and S10AN

Rationalized approach

Tank code

Group of permitted substances

Class

Classification code

Packing group

S4AH

6.2

I3

II

9

M2

II

and groups of permitted substances for tanks codes SGAV, SGAN and SGAH

S10AN

8

C2

I

C4

I

   

C6

I

C8

I

C10

I

CF2

I

CS2

I

CW2

I

CO2

I

CT2

I

and groups of permitted substances for tank codes SGAV and SGAN

S10AH

6.1

T2

I

T3

I

T5

I

T7

I

TS

I

TW2

I

TO2

I

TC2

I

TC4

I

and groups of permitted substances for tank codes SGAV, SGAN, SGAH and S10AN

 

Hierarchy of tanks

Tanks with tank codes different from those indicated in this table or in Table A of Chapter 3.2 may also be used provided that any element (number or letter) of parts 1 to 4 of these tank codes correspond to a level of safety at least equivalent to the corresponding element of the tank code indicated in Table A of Chapter 3.2, according to the following increasing order:

Part 1: Types of tanks S  L

Part 2: Calculation pressure

 1.5  2.65  4  10  15  21 bar

Part 3: Openings A  B  C  D

Part 4: Safety valves/devices V  F  N  H

 

For example:

  • A tank with the tank code L10CN is authorized for the carriage of a substance to which the tank code L4BN has been assigned;

     

  • A tank with the tank code L4BN is authorized for the carriage of a substance to which the tank code SGAN has been assigned.

 

E: The hierarchy does not take account of any special provisions for each entry (see 4.3.5 and

.8.4).

 

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