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).

 

The following substances and groups of substances in respect of which a "(+)" is given after the tank
code in Column (12) of Table A in Chapter 3.2 are subject to special provisions. In that case the
alternate use of the tanks for other substances and groups of substances is permitted only where this is
specified in the certificate of type approval. Higher value tanks according to the provisions at the end
of the table in 4.3.4.1.2 may be used with due regard to the special provisions indicated in Column
(13) of Table A in Chapter 3.2.
(a) Class 1
Division 1.5, UN No 0331 explosive, blasting, type B: code S2.65AN;
(b) Class 4.1:
UN No. 2448 sulphur, molten: code LGBV;
UN No. 3531 polymerizing substance, solid, stabilized, n.o.s, UN No. 3533 polymerizing
substance, solid, stabilized, temperature controlled, n.o.s.: code SGAN;
UN No. 3532 polymerizing substance, liquid, stabilized, n.o.s, UN No. 3534 polymerizing
substance, liquid, stabilized, temperature controlled, n.o.s.: code L4BN;
(c) Class 4.2:
UN No. 1381 phosphorus, white or yellow, dry, or under water or in solution and UN No.
2447 phosphorus, white molten: code L10DH;
(d) Class 4.3:
UN No. 1389 alkali metal amalgam, liquid, UN No. 1391 alkali metal dispersion or alkaline
earth metal dispersion, UN No. 1392 alkaline earth metal amalgam, liquid, UN No. 1415
lithium, UN No. 1420 potassium metal alloys, liquid, UN No. 1421 alkali metal alloy, liquid,
n.o.s, UN No. 1422 potassium sodium alloys, liquid, UN No. 1428 sodium,
UN No. 2257 potassium, UN No. 3401 alkali metal amalgam, solid, UN No. 3402 alkaline
earth metal amalgam, solid, 3403 potassium metal alloys, solid, UN No. 3404 potassium
sodium alloys, solid and UN No. 3482 alkali metal dispersion, flammable or UN No. 3482
alkaline earth metal dispersion, flammable: code L10BN;
UN No. 1407 caesium and UN No. 1423 rubidium: code L10CH;
UN No. 1402 calcium carbide, packing group I: code S2.65AN;
(e) Class 5.1:
UN No. 1873 perchloric acid 5072%:
code L4DN;
UN No. 2015 hydrogen peroxide, aqueous solution, stabilized with more than 70% hydrogen
peroxide: code L4DV;
UN No. 2014 hydrogen peroxide, aqueous solution with 20-60% hydrogen peroxide, UN No.
2015 hydrogen peroxide, aqueous solution, stabilized with 60-70% hydrogen peroxide, UN No.
2426 ammonium nitrate, liquid, hot concentrated solution with more than 80% but not more
than 93% and UN No. 3149 hydrogen peroxide and peroxyacetic acid mixture, stabilized: code
L4BV;
UN No. 3375 ammonium nitrate emulsion, suspension or gel, liquid: code LGAV;
UN No. 3375 ammonium nitrate emulsion, suspension or gel, solid: code SGAV;
(f) Class 5.2:
UN No. 3109 organic peroxide type F, liquid and UN No. 3119 organic peroxide, type F, liquid
temperature controlled: code L4BN;
UN No. 3110 organic peroxide, type F, solid and UN No. 3120 organic peroxide, type F, solid,
temperature controlled: code S4AN;
(g) Class 6.1:
UN No. 1613 hydrogen cyanide, aqueous solution and UN No. 3294 hydrogen cyanide
solution in alcohol: code L15DH;
(h) Class 7:
All substances: special tanks;
Minimum requirements for liquids: code L2.65CN; for solids: code S2.65AN
Notwithstanding the general requirements of this paragraph, tanks used for radioactive material
may also be used for the carriage of other goods provided the requirements of 5.1.3.2 are
complied with.
(i) Class 8:
UN No. 1052 hydrogen fluoride, anhydrous, UN No. 1744 bromine or bromine solution and
UN No. 1790 hydrofluoric acid, solution, with more than 85% hydrofluoric acid: code L21DH;
UN No. 1791 hypochlorite solution and UN No. 1908 chlorite solution: code L4BV.

 

Tanks intended for the carriage of liquid wastes complying with the requirements of Chapter 6.10 and
equipped with two closures in accordance with 6.10.3.2, shall be assigned to tank code L4AH. If the
tanks concerned are equipped for the alternate carriage of liquid and solid substances, they shall be
assigned to the combined codes L4AH+S4AH.

General provisions

Where hot substances are loaded, the temperature of the outer surface of the tank or of the thermal
insulation shall not exceed 70 °C during carriage.
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