Unless expressly stated otherwise, the sign "%" in ADR represents:
(a) In the case of mixtures of solids or of liquids, and also in the case of solutions and of solids
wetted by a liquid, a percentage mass based on the total mass of the mixture, the solution or the
wetted solid;
(b) In the case of mixtures of compressed gases, when filled by pressure, the proportion of the
volume indicated as a percentage of the total volume of the gaseous mixture, or, when filled by
mass, the proportion of the mass indicated as a percentage of the total mass of the mixture;
(c) In the case of mixtures of liquefied gases and dissolved gases, the proportion of the mass
indicated as a percentage of the total mass of the mixture.
Pressures of all kinds relating to receptacles (such as test pressure, internal pressure, safety valve
opening pressure) are always indicated in gauge pressure (pressure in excess of atmospheric pressure);
however, the vapour pressure of substances is always expressed in absolute pressure.
Where ADR specifies a degree of filling for receptacles, this is always related to a reference
temperature of the substances of 15 °C, unless some other temperature is indicated.
TRAINING OF PERSONS INVOLVED IN THE CARRIAGE OF DANGEROUS GOODS
Scope and applicability
Persons employed by the participants referred to in Chapter 1.4, whose duties concern the carriage of
dangerous goods, shall be trained in the requirements governing the carriage of such goods
appropriate to their responsibilities and duties. Employees shall be trained in accordance with 1.3.2
before assuming responsibilities and shall only perform functions, for which required training has not
yet been provided, under the direct supervision of a trained person. Training requirements specific to
security of dangerous goods in Chapter 1.10 shall also be addressed.
NOTE 1: With regard to the training for the safety adviser, see 1.8.3 instead of this section.
NOTE 2: With regard to the training of the vehicle crew, see Chapter 8.2 instead of this section.
NOTE 3: For training with regard to Class 7, see also 1.7.2.5.
Nature of the training
The training shall take the following form, appropriate to the responsibility and duties of the
individual concerned.
General awareness training
Personnel shall be familiar with the general requirements of the provisions for the carriage of
dangerous goods.
Function-specific training
Personnel shall be trained, commensurate directly with their duties and responsibilities in the
requirements of the regulations concerning the carriage of dangerous goods.
Where the carriage of dangerous goods involves a multimodal transport operation, the personnel shall
be aware of the requirements concerning other transport modes.
Safety training
Commensurate with the degree of risk of injury or exposure arising from an incident involving the
carriage of dangerous goods, including loading and unloading, personnel shall be trained in the
hazards and dangers presented by dangerous goods.
The training provided shall aim to make personnel aware of the safe handling and emergency response
procedures.
The training shall be periodically supplemented with refresher training to take account of changes in
regulations.
Documentation
Records of training received according to this Chapter shall be kept by the employer and made
available to the employee or competent authority, upon request. Records shall be kept by the employer
for a period of time established by the competent authority. Records of training shall be verified upon
commencing a new employment.
SAFETY OBLIGATIONS OF THE PARTICIPANTS
General safety measures
The participants in the carriage of dangerous goods shall take appropriate measures according to the
nature and the extent of foreseeable dangers, so as to avoid damage or injury and, if necessary, to
minimize their effects. They shall, in all events, comply with the requirements of ADR in their
respective fields.
When there is an immediate risk that public safety may be jeopardized, the participants shall
immediately notify the emergency services and shall make available to them the information they
require to take action.
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