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Summary of the "Convention on the Transboundary Effects of Industrial Accidents" is available from the UNEP Register of International Treaties and Other Agreements in the Field of the Environment.

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CONVENTION ON THE TRANSBOUNDARY EFFECTS OF 
INDUSTRIAL ACCIDENTS

(Helsinki, 17 March 1992)

Preamble

The Parties to this Convention,

Mindful of the special importance, in the interest of 
present and future generations, of protecting human 
beings and the environment against the effects of 
industrial accidents, Recognizing the importance and 
urgency of preventing serious adverse effects of 
industrial accidents on human beings and the 
environment, and of promoting all measures that 
stimulate the rational, economic and efficient use of 
preventive, preparedness and response measures to enable 
environmentally sound and sustainable economic 
development,

Taking into account the fact that the effects of industrial 
accidents may make themselves felt across borders, and 
require cooperation among States,

Affirming the need to promote active international 
cooperation among the States concerned before, during, and 
after an accident, to enhance appropriate policies and to 
reinforce and coordinate action at all appropriate levels 
for promoting the prevention of, preparedness for and 
response to the transboundary effects of industrial 
accidents,

Noting the importance and usefulness of bilateral and 
multilateral arrangements for the prevention of, 
preparedness for and response to the effects of industrial 
accidents,

Conscious of the role played in this respect by the United 
Nations Economic Commission for Europe (ECE) and recalling, 
inter alia, the ECE Code of Conduct on Accidental Pollution 
of Transboundary Inland Waters and the Convention on 
Environmental Impact Assessment in a Transboundary Context,

Having regard to the relevant provisions of the Final Act of 
the Conference on Security and Cooperation in Europe (CSCE), 
the Concluding Document of the Vienna Meeting of 
Representatives of the Participating States of the CSCE, and 
the outcome of the Sofia Meeting on the Protection of the 
Environment of the CSCE, as well as to pertinent activities 
and mechanisms in the United Nations Environment Programme 
(UNEP), in particular the APELL programme, in the 
International Labour Organisation (ILO), in particular the 
Code of Practice on the Prevention of Major Industrial 
Accidents, and in other relevant international organizations,

Considering the pertinent provisions of the Declaration of 
the United Nations Conference on the Human Environment, and 
in particular principle 2l, according to which States have, 
in accordance with the Charter of the United Nations and the 
principles of international law, the sovereign right to 
exploit their own resources pursuant to their own 
environmental policies, and the responsibility to ensure that 
activities within their jurisdiction or control do not cause 
damage to the environment of other States or of areas beyond 
the limits of national jurisdiction,

Taking account of the polluter pays principle as a general 
principle of international environmental law,

Underlining the principles of international law and custom, 
in particular the principles of good-neighbourliness, 
reciprocity, non-discrimination and good faith,

Have agreed as follows:

Article 1

Definitions

For the purposes of this Convention,

(a) "Industrial accident" means an event resulting from an 
uncontrolled development in the course of any activity 
involving hazardous substances either:

(i) In an installation, for example during manufacture, use, 
storage, handling, or disposal; or

(ii) During transportation in so far as it is covered by 
paragraph 2 (d) of Article 2;

(b) "Hazardous activity" means any activity in which one or 
more hazardous substances are present or may be present in 
quantities at or in excess of the threshold quantities 
listed in Annex I hereto, and which is capable of causing 
transboundary effects;

(c) "Effects" means any direct or indirect, immediate or 
delayed adverse consequences caused by an industrial 
accident on, inter alia:

(i) Human beings, flora and fauna;

(ii) Soil, water, air and landscape;

(iii) The interaction between the factors in (i) and (ii);

(iv) Material assets and cultural heritage, including 
historical monuments;

(d) "Transboundary effects" means serious effects within the 
jurisdiction of a Party as a result of an industrial accident 
occurring within the jurisdiction of another Party;

(e) "Operator" means any natural or legal person, including 
public authorities, in charge of an activity, e.g. 
supervising, planning to carry out or carrying out an 
activity;

(f) "Party" means, unless the text otherwise indicates, a 
Contracting Party to this Convention;

(g) "Party of origin" means any Party or Parties under whose 
jurisdiction an industrial accident occurs or is capable of 
occurring; (h) "Affected Party" means any Party or Parties 
affected or capable of being affected by transboundary effects 
of an industrial accident;

(i) "Parties concerned" means any Party of origin and any 
affected Party;

(j) "The public" means one or more natural or legal persons.

Article 2

Scope

1. This Convention shall apply to the prevention of, 
preparedness for and response to industrial accidents 
capable of causing transboundary effects, including the 
effects of such accidents caused by natural disasters, 
and to international cooperation concerning mutual 
assistance, research and development, exchange of 
information and exchange of technology in the area of 
prevention of, preparedness for and response to 
industrial accidents.

2. This Convention shall not apply to:

(a) Nuclear accidents or radiological emergencies;

(b) Accidents at military installations;

(c) Dam failures, with the exception of the effects of 
industrial accidents caused by such failures;

(d) Land-based transport accidents with the exception 
of:

(i) Emergency response to such accidents;

(ii) Transportation on the site of the hazardous 
activity;

(e) Accidental release of genetically modified 
organisms;

(f) Accidents caused by activities in the marine 
environment, including seabed exploration or 
exploitation;

(g) Spills of oil or other harmful substances at sea.

Article 3

General provisions

1. The Parties shall, taking into account efforts 
already made at national and international levels, take 
appropriate measures and cooperate within the framework 
of this Convention, to protect human beings and the 
environment against industrial accidents by preventing 
such accidents as far as possible, by reducing their 
frequency and severity and by mitigating their effects. To 
this end, preventive, preparedness and response measures, 
including restoration measures, shall be applied.

2. The Parties shall, by means of exchange of information, 
consultation and other cooperative measures and without 
undue delay, develop and implement policies and strategies 
for reducing the risks of industrial accidents and 
improving preventive, preparedness and response measures, 
including restoration measures, taking into account, in 
order to avoid unnecessary duplication, efforts already 
made at national and international levels.

3. The Parties shall ensure that the operator is obliged to 
take all measures necessary for the safe performance of the 
hazardous activity and for the prevention of industrial 
accidents.

4. To implement the provisions of this Convention, the 
Parties shall take appropriate legislative, regulatory, 
administrative and financial measures for the prevention 
of, preparedness for and response to industrial accidents.

5. The provisions of this Convention shall not prejudice 
any obligations of the Parties under international law with 
regard to industrial accidents and hazardous activities.

Article 4

Identification, consultation and advice

1. For the purpose of undertaking preventive measures and 
setting up preparedness measures, the Party of origin shall 
take measures, as appropriate, to identify hazardous 
activities within its jurisdiction and to ensure that 
affected Parties are notified of any such proposed or 
existing activity.

2. Parties concerned shall, at the initiative of any such 
Party, enter into discussions on the identification of those 
hazardous activities that are, reasonably, capable of causing 
transboundary effects. If the Parties concerned do not agree 
on whether an activity is such a hazardous activity, any such 
Party may, unless the Parties concerned agree on another 
method of resolving the question, submit that question to an 
inquiry commission in accordance with the provisions of Annex 
II hereto for advice.

3. The Parties shall, with respect to proposed or existing 
hazardous activities, apply the procedures set out in Annex 
III hereto.

4. When a hazardous activity is subject to an environ-
mental impact assessment in accordance with the Convention 
on Environmental Impact Assessment in a Transboundary 
Context and that assessment includes an evaluation of the 
transboundary effects of industrial accidents from the 
hazardous activity which is performed in conformity with 
the terms of this Convention, the final decision taken for 
the purposes of the Convention on Environmental Impact 
Assessment in a Transboundary Context shall fulfil the 
relevant requirements of this Convention.

Article 5

Voluntary Extension

Parties concerned should, at the initiative of any of 
them, enter into discussions on whether to treat an 
activity not covered by Annex I as a hazardous activity. 
Upon mutual agreement, they may use an advisory mechanism 
of their choice, or an inquiry commission in accordance 
with Annex II, to advise them. Where the Parties concerned 
so agree, this Convention, or any part thereof, shall 
apply to the activity in question as if it were a 
hazardous activity.


Article 6

Prevention

1. The Parties shall take appropriate measures for the 
prevention of industrial accidents, including measures to 
induce action by operators to reduce the risk of industrial 
accidents. Such measures may include, but are not limited to 
those referred to in Annex IV hereto.

2. With regard to any hazardous activity, the Party of 
origin shall require the operator to demonstrate the safe 
performance of the hazardous activity by the provision of 
information such as basic details of the process, including 
but not limited to, analysis and evaluation as detailed in 
Annex V hereto.

Article 7

Decision-making on Siting

Within the framework of its legal system, the Party of 
origin shall, with the objective of minimizing the risk to 
the population and the environment of all affected Parties, 
seek the establishment of policies on the siting of new 
hazardous activities and on significant modifications to 
existing hazardous activities. Within the framework of 
their legal systems, the affected Parties shall seek the 
establishment of policies on significant developments in 
areas which could be affected by transboundary effects of 
an industrial accident arising out of a hazardous activity 
so as to minimize the risks involved. In elaborating and 
establishing these policies, the Parties should consider 
the matters set out in Annex V, paragraph 2, subparagraphs 
(1) to (8), and Annex VI hereto.

Article 8

Emergency Preparedness

1. The Parties shall take appropriate measures to establish 
and maintain adequate emergency preparedness to respond to 
industrial accidents. The Parties shall ensure that 
preparedness measures are taken to mitigate transboundary 
effects of such accidents, on-site duties being undertaken 
by operators. These measures may include, but are not 
limited to those referred to in Annex VII hereto. In 
particular, the Parties concerned shall inform each other 
of their contingency plans.

2. The Party of origin shall ensure for hazardous 
activities the preparation and implementation of on-site 
contingency plans, including suitable measures for response 
and other measures to prevent and minimize transboundary 
effects. The Party of origin shall provide to the other 
Parties concerned the elements it has for the elaboration 
of contingency plans.

3. Each Party shall ensure for hazardous activities the 
preparation and implementation of off-site contingency 
plans covering measures to be taken within its territory 
to prevent and minimize transboundary effects. In 
preparing these plans, account shall be taken of the 
conclusions of analysis and evaluation, in particular the 
matters set out in Annex V, paragraph 2, subparagraphs (1) 
to (5). Parties concerned shall endeavour to make such 
plans compatible. Where appropriate, joint off-site 
contingency plans shall be drawn up in order to facilitate 
the adoption of adequate response measures.

4. Contingency plans should be reviewed regularly, or when 
circumstances so require, taking into account the 
experience gained in dealing with actual emergencies.

Article 9

Information to, and Participation of the Public

1. The Parties shall ensure that adequate information is 
given to the public in the areas capable of being affected 
by an industrial accident arising out of a hazardous 
activity. This information shall be transmitted through 
such channels as the Parties deem appropriate, shall 
include the elements contained in Annex VIII hereto and 
should take into account matters set out in Annex V, 
paragraph 2, subparagraphs (1) to (4) and (9).

2. The Party of origin shall, in accordance with the 
provisions of this Convention and whenever possible and 
appropriate, give the public in the areas capable of being 
affected an opportunity to participate in relevant procedures 
with the aim of making known its views and concerns on 
prevention and preparedness measures, and shall 
ensure that the opportunity given to the public of the 
affected Party is equivalent to that given to the public of 
the Party of origin.
3. The Parties shall, in accordance with their legal systems 
and, if desired, on a reciprocal basis provide natural or 
legal persons who are being or are capable of being adversely 
affected by the transboundary effects of an industrial 
accident in the territory of a Party, with access to, and 
treatment in the relevant administrative and judicial 
proceedings, including the possibilities of starting a legal 
action and appealing a decision affecting their rights, 
equivalent to those available to persons within their own 
jurisdiction.

Article 10

Industrial Accident Notification Systems

1. The Parties shall, with the aim of obtaining and 
transmitting industrial accident notifications containing 
information needed to counteract transboundary effects, 
provide for the establishment and operation of compatible 
and efficient industrial accident notification systems at 
appropriate levels.

2. In the event of an industrial accident, or imminent 
threat thereof, which causes or is capable of causing 
transboundary effects, the Party of origin shall ensure 
that affected Parties are, without delay, notified at 
appropriate levels through the industrial accident 
notification systems. Such notification shall include the 
elements contained in Annex IX hereto.

3. The Parties concerned shall ensure that, in the event of 
an industrial accident or imminent threat thereof, the 
contingency plans prepared in accordance with Article 8 are 
activated as soon as possible and to the extent appropriate 
to the circumstances.

Article 11

Response

1. The Parties shall ensure that, in the event of an 
industrial accident, or imminent threat thereof, adequate 
response measures are taken, as soon as possible and using 
the most efficient practices, to contain and minimize 
effects.

2. In the event of an industrial accident, or imminent threat 
thereof, which causes or is capable of causing transboundary 
effects, the Parties concerned shall ensure that the effects 
are assessed, where appropriate, jointly for the purpose of 
taking adequate response measures. The Parties concerned 
shall endeavour to coordinate their response measures.

Article 12

Mutual Assistance

1. If a Party needs assistance in the event of an industrial 
accident, it may ask for assistance from other Parties, 
indicating the scope and type of assistance required. A Party 
to whom a request for assistance is directed shall promptly 
decide and inform the requesting Party whether it is in a 
position to render the assistance required and indicate the 
scope and terms of the assistance that might be rendered.

2. The Parties concerned shall cooperate to facilitate the 
prompt provision of assistance agreed to under paragraph 1 
of this Article, including, where appropriate, action to 
minimize the consequences and effects of the industrial 
accident, and to provide general assistance. Where Parties 
do not have bilateral or multilateral agreements which 
cover their arrangements for providing mutual assistance, 
the assistance shall be rendered in accordance with Annex 
X hereto, unless the Parties agree otherwise.

Article 13

Responsibility and Liability

The Parties shall support appropriate international efforts to 
elaborate rules, criteria and procedures in the field of 
responsibility and liability.

Article 14

Research and Development

The Parties shall, as appropriate, initiate and cooperate 
in the conduct of research into, and in the development 
of methods and technologies for the prevention of, 
preparedness for and response to industrial accidents. 
For these purposes, the Parties shall encourage and 
actively promote scientific and technological 
cooperation, including research into less hazardous 
processes aimed at limiting accident hazards and 
preventing and limiting the consequences of industrial 
accidents.

Article 15

Exchange of Information

The Parties shall, at the multilateral or bilateral level, 
exchange reasonably obtainable information, including the 
elements contained in Annex XI hereto.

Article 16

Exchange of Technology

1. The Parties shall, consistent with their laws, 
regulations and practices, facilitate the exchange of 
technology for the prevention of, preparedness for and 
response to the effects of industrial accidents, 
particularly through the promotion of:

(a) Exchange of available technology on various financial 
bases; 

(b) Direct industrial contacts and cooperation;

(c) Exchange of information and experience;

(d) Provision of technical assistance.

2. In promoting the activities specified in paragraph 1, 
subparagraphs (a) to (d) of this Article, the Parties 
shall create favourable conditions by facilitating 
contacts and cooperation among appropriate organizations 
and individuals in both the private and the public sectors 
that are capable of providing technology, design and 
engineering services, equipment or finance.

Article 17

Competent Authorities and Points of Contact

1. Each Party shall designate or establish one or more 
competent authorities for the purposes of this Convention.

2. Without prejudice to other arrangements at the bilateral 
or multilateral level, each Party shall designate or 
establish one point of contact for the purpose of industrial 
accident notifications pursuant to Article 10, and one point 
of contact for the purpose of mutual assistance pursuant to 
Article 12. These points of contact should preferably be the 
same.

3. Each Party shall, within three months of the date of 
entry into force of this Convention for that Party, inform 
the other Parties, through the secretariat referred to in 
Article 20, which body or bodies it has designated as its 
point(s) of contact and as its competent authority or 
authorities.

4. Each Party shall, within one month of the date of 
decision, inform the other Parties, through the secretariat, 
of any changes regarding the designation(s) it has made 
under paragraph 3 of this Article.

5. Each Party shall keep its point of contact and industrial 
accident notification systems pursuant to Article 10 
operational at all times. 6. Each Party shall keep its point 
of contact and the authorities responsible for making and 
receiving requests for, and accepting offers of assistance 
pursuant to Article 12 operational at all times.

Article 18

Conference of the Parties

1. The representatives of the Parties shall constitute the 
Conference of the Parties of this Convention and hold their 
meetings on a regular basis. The first meeting of the 
Conference of the Parties shall be convened not later than 
one year after the date of the entry into force of this 
Convention. Thereafter, a meeting of the Conference of the 
Parties shall be held at least once a year or at the 
written request of any Party, provided that, within six 
months of the request being communicated to them by the 
secretariat, it is supported by at least one third of the 
Parties. 

2. The Conference of the Parties shall:

(a) Review the implementation of this Convention;

(b) Carry out advisory functions aimed at strengthening the 
ability of Parties to prevent, prepare for and respond to 
the transboundary effects of industrial accidents, and at 
facilitating the provision of technical assistance and 
advice at the request of Parties faced with industrial 
accidents;

(c) Establish, as appropriate, working groups and other 
appropriate mechanisms to consider matters related to the 
implementation and development of this Convention and, to this 
end, to prepare appropriate studies and other documentation 
and submit recommendations for consideration by the Conference 
of the Parties;

(d) Fulfil such other functions as may be appropriate under 
the provisions of this Convention;

(e) At its first meeting, consider and, by consensus, adopt 
rules of procedure for its meetings.

3. The Conference of the Parties, in discharging its 
functions, shall, when it deems appropriate, also cooperate 
with other relevant international organizations.

4. The Conference of the Parties shall, at its first meeting, 
establish a programme of work, in particular with regard to 
the items contained in Annex XII hereto. The Conference of 
the Parties shall also decide on the method of work, 
including the use of national centres and cooperation with 
relevant international organizations and the establishment of 
a system with a view to facilitating the implementation of 
this Convention, in particular for mutual assistance in the 
event of an industrial accident, and building upon pertinent 
existing activities within relevant international 
organizations. As part of the programme of work, the 
Conference of the Parties shall review existing national, 
regional and international centres, and other bodies and 
programmes aimed at coordinating information and efforts in 
the prevention of, preparedness for and response to 
industrial accidents, with a view to determining what 
additional international institutions or centres may be 
needed to carry out the tasks listed in Annex XII.

5. The Conference of the Parties shall, at its first 
meeting, commence consideration of procedures to create more 
favourable conditions for the exchange of technology for the 
prevention of, preparedness for and response to the effects 
of industrial accidents.

6. The Conference of the Parties shall adopt guidelines and 
criteria to facilitate the identification of hazardous 
activities for the purposes of this Convention.

Article 19

Right to Vote

1. Except as provided for in paragraph 2 of this Article, 
each Party to this Convention shall have one vote.

2. Regional economic integration organizations as defined in 
Article 27 shall, in matters within their competence, 
exercise their right to vote with a number of votes equal to 
the number of their member States which are Parties to this 
Convention. Such organizations shall not exercise their 
right to vote if their member States exercise theirs, and 
vice versa.

Article 20

Secretariat

The Executive Secretary of the Economic Commission for 
Europe shall carry out the following secretariat functions:

(a) Convene and prepare meetings of the Parties;

(b) Transmit to the Parties reports and other information 
received in accordance with the provisions of this 
Convention;

(c) Such other functions as may be determined by the 
Parties.


Article 21

Settlement of Disputes


1. If a dispute arises between two or more Parties about 
the interpretation or application of this Convention, they 
shall seek a solution by negotiation or by any other 
method of dispute settlement acceptable to the parties to 
the dispute.

2. When signing, ratifying, accepting, approving or 
acceding to this Convention, or at any time thereafter, a 
Party may declare in writing to the Depositary that, for a 
dispute not resolved in accordance with paragraph 1 of this 
Article, it accepts one or both of the following means of 
dispute settlement as compulsory in relation to any Party 
accepting the same obligation:

(a) Submission of the dispute to the International Court of 
Justice; (b) Arbitration in accordance with the procedure 
set out in Annex XIII hereto.

3. If the parties to the dispute have accepted both means 
of dispute settlement referred to in paragraph 2 of this 
Article, the dispute may be submitted only to the 
International Court of Justice, unless the parties to the 
dispute agree otherwise.

Article 22

Limitations on the Supply of Information

1. The provisions of this Convention shall not affect the 
rights or the obligations of Parties in accordance with 
their national laws, regulations, administrative provisions 
or accepted legal practices and applicable international 
regulations to protect information related to personal 
data, industrial and commercial secrecy, including 
intellectual property, or national security.

2. If a Party nevertheless decides to supply such 
protected information to another Party, the Party 
receiving such protected information shall respect the 
confidentiality of the information received and the 
conditions under which it is supplied, and shall only 
use that information for the purposes for which it was 
supplied.

Article 23

Implementation

The Parties shall report periodically on the implementation 
of this Convention.

Article 24

Bilateral and Multilateral Agreements

1. The Parties may, in order to implement their obligations 
under this Convention, continue existing or enter into new 
bilateral or multilateral agreements or other arrangements.

2. The provisions of this Convention shall not affect the 
right of Parties to take, by bilateral or multilateral 
agreement where appropriate, more stringent measures than 
those required by this Convention.

Article 25

Status of Annexes

The Annexes to this Convention form an integral part of the 
Convention.

Article 26

Amendments to the Convention

1. Any Party may propose amendments to this Convention.

2. The text of any proposed amendment to this Convention 
shall be submitted in writing, to the Executive Secretary 
of the Economic Commission for Europe, who shall circulate 
it to all Parties. The Conference of the Parties shall 
discuss proposed amendments at its next annual meeting, 
provided that such proposals have been circulated to the 
Parties by the Executive Secretary of the Economic 
Commission for Europe at least ninety days in advance.

3. For amendments to this Convention - other than those to 
Annex I, for which the procedure is described in paragraph 
4 of this Article: (a) Amendments shall be adopted by 
consensus of the Parties present at the meeting and shall 
be submitted by the Depositary to all Parties for 
ratification, acceptance or approval;

(b) Instruments of ratification, acceptance or approval of 
amendments shall be deposited with the Depositary. 
Amendments adopted in accordance with this Article shall 
enter into force for Parties that have accepted them on the 
ninetieth day following the day of receipt by the 
Depositary of the sixteenth instrument of ratification, 
acceptance or approval;

(c) Thereafter, amendments shall enter into force for any 
other Party on the ninetieth day after that Party deposits 
its instruments of ratification, acceptance or approval of 
the amendments.

4. For amendments to Annex I:

(a) The Parties shall make every effort to reach agreement 
by consensus. If all efforts at consensus have been 
exhausted and no agreement reached, the amendments shall, 
as a last resort, be adopted by a nine-tenths majority vote 
of the Parties present and voting at the meeting. If 
adopted by the Conference of the Parties, the amendments 
shall be communicated to the Parties and recommended for 
approval;

(b) On the expiry of twelve months from the date of their 
communication by the Executive Secretary of the Economic 
Commission for Europe, the amendments to Annex I shall become 
effective for those Parties to this Convention which have not 
submitted a notification in accordance with the provisions of 
paragraph 4 (c) of this Article, provided that at least 
sixteen Parties have not submitted such a notification;

(c) Any Party that is unable to approve an amendment to 
Annex I of this Convention shall so notify the Executive 
Secretary of the Economic Commission for Europe in 
writing within twelve months from the date of the 
communication of the adoption. The Executive Secretary 
shall without delay notify all Parties of any such 
notification received. A Party may at any time 
substitute an acceptance for its previous notification 
and the amendment to Annex I shall thereupon enter into 
force for that Party.

(d) For the purpose of this paragraph "Parties present and 
voting" means Parties present and casting an affirmative or 
negative vote.

Article 27

Signature

This Convention shall be open for signature at Helsinki 
from 17 to 18 March 1992 inclusive, and thereafter at 
United Nations Headquarters in New York until 18 
September 1992, by States members of the Economic 
Commission for Europe, as well as States having 
consultative status with the Economic Commission for 
Europe pursuant to paragraph 8 of Economic and Social 
Council resolution 36 (IV) of 28 March 1947, and by 
regional economic integration organizations constituted 
by sovereign States members of the Economic Commission 
for Europe to which their member States have transferred 
competence in respect of matters governed by this 
Convention, including the competence to enter into 
treaties in respect of these matters.

Article 28

Depositary

The Secretary-General of the United Nations shall act as 
the Depositary of this Convention.

Article 29

Ratification, Acceptance, Approval and Accession

1. This Convention shall be subject to ratification, 
acceptance or approval by the signatory States and regional 
economic integration organizations referred to in Article 
27.

2. This Convention shall be open for accession by the 
States and organizations referred to in Article 27.

3. Any organization referred to in Article 27 which becomes 
Party to this Convention without any of its member States 
being a Party shall be bound by all the obligations under 
this Convention. In the case of such organizations, one or 
more of whose member States is a Party to this Convention, 
the organization and its member States shall decide on their 
respective responsibilities for the performance of their 
obligations under this Convention. In such cases, the 
organization and the member States shall not be entitled to 
exercise rights under this Convention concurrently.

4. In their instruments of ratification, acceptance, 
approval or accession, the regional economic integration 
organizations referred to in Article 27 shall declare the 
extent of their competence with respect to the matters 
governed by this Convention. These organizations shall also 
infom the Depositary of any substantial modification to the 
extent of their competence.

Article 30

Entry into Force

1. This Convention shall enter into force on the ninetieth 
day after the date of deposit of the sixteenth instrument 
of ratification, acceptance, approval or accession.

2. For the purposes of paragraph 1 of this Article, any 
instrument deposited by an organization referred to in 
Article 27 shall not be counted as additional to those 
deposited by States members of such an organization.

3. For each State or organization referred to in Article 27 
which ratifies, accepts or approves this Convention or 
accedes thereto after the deposit of the sixteenth 
instrument of ratification, acceptance, approval or 
accession, this Convention shall enter into force on the 
ninetieth day after the date of deposit by such State or 
organization of its instrument of ratification, acceptance, 
approval or accession.

Article 31

Withdrawal

1. At any time after three years from the date on which 
this Convention has come into force with respect to a 
Party, that Party may withdraw from this Convention by 
giving written notification to the Depositary. Any such 
withdrawal shall take effect on the ninetieth day after the 
date of the receipt  of the notification by the Depositary.

2. Any such withdrawal shall not affect the application of 
Article 4 to an activity in respect of which a notification 
has been made pursuant to Article 4, paragraph 1, or a 
request for discussions has been made pursuant to Article 
4, paragraph 2.

Article 32

Authentic Texts

The original of this Convention, of which the English, 
French and Russian texts are equally authentic, shall be 
deposited with the Secretary-General of the United Nations.

Annex I - Hazardous Substances for the Purposes of 
Defining Hazardous Activities

omissis

Annex II - Inquiry Commission Procedure Pursuant to 
Articles 4 and 5

omissis

Annex III - Procedures Pursuant to Article 4

omissis

Annex IV - Preventive Measures Pursuant to Article 6

omissis

Annex V - Analysis and Evaluation

omissis

Annex VI - Decision-Making on Siting Pursuant to Article 7

omissis

Annex VII - Emergency Preparedness Measures Pursuant to 
Article 8

omissis

Annex VIII - Information to the Public Pursuant to Article 
9
omissis

Annex IX - Industrial Accident Notification Systems 
Pursuant to Article 10

omissis

Annex X - Mutual Assistance Pursuant to Article 12

omissis


Annex XI - Exchange of Information Pursuant to Article 15

omissis

Annex XII - Tasks for Mutual Assistance Pursuant to Article 
18, Paragraph 4

omissis

Annex XIII - Arbitration

omissis.