combined operation — an operation carried out from an installation with another installation or installations for purposes related to the other installation(s) which thereby materially affects the risks to the safety of persons or the protection of the environment on any or all of the installations (25)

commencement of operations — the point in time when the installation or connected infrastructure is involved for the first time in the operations for which it is designed (31)

competent authority — the public authority, appointed pursuant to this Directive and responsible for the duties assigned to it in this Directive. The competent authority may be comprised of one or more public bodies (14)

connected infrastructure — within the safety zone or within a nearby zone of a greater distance from the installation at the discretion of the Member State: any well and associated structures, supplementary units and devices connected to the installation; any apparatus or works on or fixed to the main structure of the installation; any attached pipeline apparatus or works (21)

contractor — any entity contracted by the operator or owner to perform specific tasks on behalf of the operator or owner (12)

entity — any natural or legal person or any group of such persons (7)

exploration — drilling into a prospect and all related offshore oil and gas operations necessary prior to production-related operations (15)

external emergency response plan — a local, national or regional strategy to prevent escalation or limit the consequences of a major accident relating to offshore oil and gas operations using all resources available to the operator as described in the relevant internal emergency response plan, and any supplementary resources made available by the Member States (36)

independent verification — an assessment and confirmation of the validity of particular written statements by an entity or an organisational part of the operator or the owner that is not under the control of or influenced by, the entity or the organisational part using those statements (29)

industry — entities that are directly involved in offshore oil and gas operations covered by this Directive or whose activities are closely related to those operations (35)

installation — a stationary, fixed or mobile facility, or a combination of facilities permanently inter-connected by bridges or other structures, used for offshore oil and gas operations or in connection with such operations. Installations include mobile offshore drilling units only when they are stationed in offshore waters for drilling, production or other activities associated with offshore oil and gas operations (19)

internal emergency response plan — a plan prepared by the operator or owner pursuant to the requirements of this Directive concerning the measures to prevent escalation or limit the consequences of a major accident relating to offshore oil and gas operations (28)

licence — an authorisation for offshore oil and gas operations pursuant to Directive 94/22/EC (9)

licensed area — the geographical area covered by the licence (10)

licensee — the holder or joint holders of a licence (11)

licensing authority — the public authority which is responsible for granting authorisations or for monitoring the use of authorisations as provided for in Directive 94/22/EC (13)

major accident — in relation to an installation or connected infrastructure: For the purposes of determining whether an incident constitutes a major accident under points (a), (b) or (d), an installation that is normally unattended shall be treated as if it were attended; an incident involving an explosion, fire, loss of well control, or release of oil, gas or dangerous substances involving, or with a significant potential to cause, fatalities or serious personal injury; an incident leading to serious damage to the installation or connected infrastructure involving, or with a significant potential to cause, fatalities or serious personal injury; any other incident leading to fatalities or serious injury to five or more persons who are on the offshore installation where the source of danger occurs or who are engaged in an offshore oil and gas operation in connection with the installation or connected infrastructure; or any major environmental incident resulting from incidents referred to in points (a), (b) and (c) (1)

major environmental incident — an incident which results, or is likely to result, in significant adverse effects on the environment in accordance with Directive 2004/35/EC (37)

major hazard — a situation with the potential to result in a major accident (23)

material change — in the case of a report on major hazards, a change to the basis on which the original report was accepted including, inter alia, physical modifications, availability of new knowledge or technology and operational management changes; in the case of a notification of well operations or combined operations, a change to the basis on which the original notification was submitted including, inter alia, physical modifications, replacement of one installation with another, availability of new knowledge or technology and operational management changes (30)

non-production installation — an installation other than an installation used for production of oil and gas (17)

offshore — situated in the territorial sea, the Exclusive Economic Zone or the continental shelf of a Member State within the meaning of the United Nations Convention on the Law of the Sea (2)

offshore oil and gas operations — all activities associated with an installation or connected infrastructure, including design, planning, construction, operation and decommissioning thereof, relating to exploration and production of oil or gas, but excluding conveyance of oil and gas from one coast to another (3)

oil spill response effectiveness — the effectiveness of spill response systems in responding to an oil spill, on the basis of an analysis of the frequency, duration, and timing of environmental conditions that would preclude a response. The assessment of oil spill response effectiveness is to be expressed as a percentage of time that such conditions are not present and is to include a description of the operating limitations placed on the installations concerned as a result of that assessment (32)

operator — the entity appointed by the licensee or licensing authority to conduct offshore oil and gas operations, including planning and executing a well operation or managing and controlling the functions of a production installation (5)

owner — an entity legally entitled to control the operation of a non-production installation (27)

production — offshore extraction of oil and gas from the underground strata of the licensed area including offshore processing of oil and gas and its conveyance through connected infrastructure (16)

production installation — an installation used for production (20)

risk — the combination of the probability of an event and the consequences of that event (4)

safety and environmental critical elements — parts of an installation, including computer programmes, the purpose of which is to prevent or limit the consequences of a major accident, or the failure of which could cause or contribute substantially to a major accident (33)

safety zone — the area within a distance of 500 metres from any part of the installation, established by the Member State (26)

suitable — right or fully appropriate, including consideration of proportionate effort and cost, for a given requirement or situation, based on objective evidence and demonstrated by an analysis, comparison with appropriate standards or other solutions used in comparable situations by other authorities or industry (6)

the public — one or more entities and, in accordance with national legislation or practice, their associations, organisations or groups (18)

tripartite consultation — a formal arrangement to enable dialogue and cooperation between the competent authority, operators and owners, and workers’ representatives (34)

well operation — any operation concerning a well that could result in the accidental release of materials that has the potential to lead to a major accident, including the drilling of a well, the repair or modification of a well, the suspension of well operations and the permanent abandonment of a well (24)