Every MEGC shall be fitted with a corrosion resistant metal plate permanently attached to the MEGC
in a conspicuous place readily accessible for inspection. The metal plate shall not be affixed to the
elements. The elements shall be marked in accordance with Chapter 6.2. As a minimum, at least the
following information shall be marked on the plate by stamping or by any other similar method:
(a) Owner information
(i) Owner’s registration number;
(b) Manufacturing information
(i) Country of manufacture;
(ii) Year of manufacture;
(iii) Manufacturer’s name or mark;
(iv) Manufacturer’s serial number;
(c) Approval information
(i) The United Nations packaging symbol 
;
This symbol shall not be used for any purpose other than certifying that a packaging, a
flexible bulk container, a portable tank or a MEGC complies with the relevant
requirements in Chapter 6.1, 6.2, 6.3, 6.5, 6.6, 6.7 or 6.11;
(ii) Approval country;
(iii) Authorized body for the design approval;
(iv) Design approval number;
(v) Letters ‘AA’, if the design was approved under alternative arrangements (see 6.7.1.2);
(d) Pressures
(i) Test pressure (in bar gauge)3;
(ii) Initial pressure test date (month and year);
(iii) Identification mark of the initial pressure test witness;
(e) Temperatures
(i) Design temperature range (in °C)3;
(f) Elements / Capacity
(i) Number of elements;
(ii) Total water capacity (in litres)3;
(g) Periodic inspections and tests
(i) Type of the most recent periodic test (5-year or exceptional);
(ii) Date of the most recent periodic test (month and year);
(iii) Identification mark of the authorized body who performed or witnessed the most recent
test.
 
3 The unit used shall be indicated.

The following information shall be durably marked on a metal plate firmly secured to the MEGC:
Name of the operator
Maximum permissible load mass ________ kg
Working pressure at 15°C: ________ bar gauge
Maximum permissible gross mass (MPGM) __________ kg
Unladen (tare) mass _________ kg

6.8

REQUIREMENTS FOR THE CONSTRUCTION, EQUIPMENT, TYPE APPROVAL, INSPECTIONS AND TESTS, AND MARKING OF FIXED TANKS (TANK-VEHICLES), DEMOUNTABLE TANKS AND TANK-CONTAINERS AND TANK SWAP BODIES, WITH SHELLS MADE OF METALLIC MATERIALS, AND BATTERY-VEHICLES AND MULTIPLE ELEMENT GAS CONTAINERS (MEGCs)

NOTE 1: For portable tanks and UN multiple-element gas containers (MEGCs) see Chapter 6.7, for fibrereinforced
plastics tanks see Chapter 6.9, for vacuum operated waste tanks see Chapter 6.10.
NOTE 2: For fixed tanks (tank-vehicles) and demountable tanks with additive devices, see special provision 664
of Chapter 3.3.

Scope

The requirements across the whole width of the page apply both to fixed tanks (tank-vehicles), to
demountable tanks and battery-vehicles, and to tank-containers, tank swap bodies and MEGCs. Those
contained in a single column apply only:
- to fixed tanks (tank-vehicles), to demountable tanks and battery-vehicles (left hand column);
- to tank-containers, tank swap bodies and MEGCs (right hand column).

These requirements shall apply to:

fixed tanks (tank-vehicles), demountable tanks
and battery-vehicles
tank-containers, tank swap bodies and MEGCs

used for the carriage of gaseous, liquid, powdery or granular substances.

Section 6.8.2 sets out the requirements applicable to fixed tanks (tank-vehicles), to demountable tanks,
tank-containers, tank swap bodies intended for the carriage of substances of all classes and batteryvehicles
and MEGCs for gases of Class 2. Sections 6.8.3 to 6.8.5 contain special requirements
supplementing or modifying the requirements of section 6.8.2.

For provisions concerning use of these tanks, see Chapter 4.3.

Requirements applicable to all classes

Construction

Basic principles

Shells, their attachments and their service and structural equipment shall be designed to withstand
without loss of contents (other than quantities of gas escaping through any degassing vents):
- static and dynamic stresses in normal conditions of carriage as defined in 6.8.2.1.2 and
6.8.2.1.13;
- prescribed minimum stresses as defined in 6.8.2.1.15.

The tanks and their fastenings shall be capable of
absorbing, under the maximum permissible load,
the forces exerted by:
- in the direction of travel: twice the total
mass;
- at right angles to the direction of travel: the
total mass;
- vertically upwards: the total mass;
- vertically downwards: twice the total mass.
Tank-containers and their fastenings shall,
under the maximum permissible load be
capable of absorbing the forces equal to those
exerted by:
- in the direction of travel: twice the total
mass;
- horizontally at right angles to the direction
of travel: the total mass; (where the
direction of travel is not clearly
determined, twice the total mass in each
direction);
- vertically upwards: the total mass;
- vertically downwards: twice the total
mass.

 

The walls of the shells shall have at least the thickness specified in

6.8.2.1.17 to 6.8.2.1.21 6.8.2.1.17 to 6.8.2.1.20.

 

Shells shall be designed and constructed in accordance with the requirements of standards listed in
6.8.2.6 or of a technical code recognized by the competent authority, in accordance with 6.8.2.7, in
which the material is chosen and the shell thickness determined taking into account maximum and
minimum filling and working temperatures, but the following minimum requirements of 6.8.2.1.6 to
6.8.2.1.26 shall be met.

Tanks intended to contain certain dangerous substances shall be provided with additional protection.
This may take the form of additional thickness of the shell (increased calculation pressure) determined
in the light of the dangers inherent in the substances concerned or of a protective device (see the
special provisions of 6.8.4).
Previous Matter Next Matter

adrbook.com - Copyright all rights reserved. © 2015-2018