Glossary
Browse the IADC Lexicon alphabetically or by category. Get comprehensive definitions of drilling industry terms.
Explosive Gas Atmosphere
Definition(s)
Explosive Gas Atmosphere (Gas Properties)
Mixture with air, under normal atmospheric conditions, of flammable substances in the form of gas or vapour, in which, after ignition, self-sustaining flame propagation. NOTE 1 This definition specifically excludes dusts and fibres in suspension in air. Mists are not covered by this standard. NOTE 2 Although a mixture that has a concentration above the upper flammable limit (see 3.1.9) is not an explosive atmosphere, in certain cases for area classification purposes, it is advisable to consider it as an explosive gas atmosphere. NOTE 3 Normal atmospheric conditions include variations above and below the reference levels of 101,3 kPa and 20 °C provided the variations have a negligible effect on the explosive properties of the flammable materials. Source: IEC 60079-29-1, Explosive atmospheres – Part 29-1: Gas detectors – Performance requirements of detectors for flammable gases. Global StandardsExplosive Gas Atmosphere
Mixture with air, under atmospheric conditions, of flammable substances in the form of gas or vapour in which, after ignition, combustion spreads throughout the unconsumed mixture [IEV 426-02-03, modified]. NOTE Although a mixture which has a concentration above the upper explosive limit (UEL) is not an explosive gas atmosphere, it can readily become so and, in certain cases for area classification purposes, it is advisable to consider it as an explosive gas atmosphere. Source: IEC 61892-7, Mobile and fixed offshore units – Electrical installations – Part 7: Hazardous areas. Global StandardsAmbient Air
Definition(s)
Ambient Air (gas properties)
Normal atmosphere surrounding the apparatus. Source: IEC 60079-29-1, Explosive atmospheres – Part 29-1: Gas detectors – Performance requirements of detectors for flammable gases. Global StandardsDiving Program Authorization
Definition(s)
Diving Program Authorization
“Diving Program Authorization” means an authorization to conduct a diving program that is issued to an operator pursuant to paragraph 5(1)(b) of the Act (autorisation de programme de plongée). Source: Canada Oil and Gas Installations Regulations, SOR/96-111, Canada, current to May 1, 2014. Regulations Source: Canada Oil and Gas Installations Regulations, SOR/96-118, February 2013. RegulationsDiving Installation
Definition(s)
Diving Installation
“Diving installation” means a diving system and any associated vessel that function independently of an accommodation installation, production installation or drilling installation (installation de plongée). Source: Canada Oil and Gas Installations Regulations, SOR/96-111, Canada, current to May 1, 2014. Regulations Source: Canada Oil and Gas Installations Regulations, SOR/96-118, February 2013. Regulations Source: Nova Scotia Offshore Certificate of Fitness Regulations, SOR/95-187, Canada, current to May 31, 2012. Regulations Source: Nova Scotia Offshore Petroleum Installations Regulations, SOR/95-191, Canada, current to May 31, 2012. RegulationsDevelopment Plan Approval
Definition(s)
Development Plan Approval
“Development plan approval” means the approval of a development plan pursuant to section 5.1 of the Act (approbation de plan de mise en valeur). Source: Canada Oil and Gas Installations Regulations, SOR/96-111, Canada, current to May 1, 2014. Regulations Source: Canada Oil and Gas Installations Regulations, SOR/96-118, February 2013.RegulationsDevelopment Plan Approval
“Development plan approval” means the approval of a development plan pursuant to section 143 of the Act; approbation de plan de mise en valeur. Source: Nova Scotia Offshore Petroleum Installations Regulations, SOR/95-191, Canada, current to May 31, 2012. RegulationsDevelopment Plan
Definition(s)
Development Plan
“Development plan” means the development plan that is approved by the Board in accordance with section 5.1 of the Act (plan de mise en valeur). Source: Canada Oil and Gas Drilling and Production Regulations, SOR/2009-315, February 2013. RegulationsDevelopment Plan
“Development plan” means a development plan relating to the development of a pool or field that is referred to in section 5.1 of the Act (plan de mise en valeur. Source: Canada Oil and Gas Installations Regulations, SOR/96-111, Canada, current to May 1, 2014. Regulations Source: Canada Oil and Gas Installations Regulations, SOR/96-118, February 2013.RegulationsDevelopment Plan
“Development plan” means a plan submitted pursuant to subsection 143(2) for the purpose of obtaining approval of the general approach of developing a pool or field as proposed in the plan; plan de mise en valeur. Source: Canada-Nova Scotia Offshore Petroleum Resources Accord Implementation Act, S.C. 1988, c. 28, Canada, current to May 26, 2013. LegislationDevelopment Plan
“Development plan” means a plan submitted for the purpose of obtaining approval of the general approach of developing a pool or field as proposed in the plan. Source: Drilling and Production Guidelines, The Canada-Nova Scotia Offshore Petroleum Board and Canada-Newfoundland and Labrador Offshore Petroleum Board, Canada, March 31, 2011. Regulatory GuidanceDevelopment Plan
The development plan that is approved by a Board pursuant to subsection 5.1(4) of COGOA, 143(4) of CNSOPRAIA, or 139(4) of CNAAIA. Source: Environmental Protection Plan Guidelines, The Canada-Newfoundland and Labrador Offshore Petroleum Board, Canada-Nova Scotia Offshore Petroleum Board, and National Energy Board, Canada, March 31, 2011. Regulatory Guidance Source: Offshore Waste Treatment Guidelines, The Canada-Newfoundland and Labrador Offshore Petroleum Board, Canada-Nova Scotia Offshore Petroleum Board, and National Energy Board, Canada, December 15, 2010. Regulatory Guidance Source: Safety Plan Guidelines, The Canada-Newfoundland and Labrador Offshore Petroleum Board, Canada-Nova Scotia Offshore Petroleum Board, and National Energy Board, Canada, March 31, 2011. Regulatory GuidanceDependent Personnel Accommodation
Definition(s)
Dependent Personnel Accommodation
“Dependent personnel accommodation” means personnel accommodation that is associated with an installation other than an accommodation installation and that does not function independently of the installation (logement du personnel connexe). Source: Canada Oil and Gas Installations Regulations, SOR/96-111, Canada, current to May 1, 2014. Regulations Source: Canada Oil and Gas Installations Regulations, SOR/96-118, February 2013.Regulations Source: Nova Scotia Offshore Certificate of Fitness Regulations, SOR/95-187, Canada, current to May 31, 2012. Regulations Source: Nova Scotia Offshore Petroleum Installations Regulations, SOR/95-191, Canada, current to May 31, 2012. RegulationsDamaged Condition
Definition(s)
Damaged Condition
“Damaged condition” means, with respect to a floating platform, the condition of the platform after it has suffered damage to the extent described in the Code referred to in subsection 57(9) (condition avariée). Source: Canada Oil and Gas Installations Regulations, SOR/96-111, Canada, current to May 1, 2014. Regulations Source: Canada Oil and Gas Installations Regulations, SOR/96-118, February 2013.Regulations Source: Nova Scotia Offshore Petroleum Installations Regulations, SOR/95-191, Canada, current to May 31, 2012. RegulationsControl Station
Definition(s)
Control Station
“Control station” means a continuously manned work area from which process and export equipment, wellhead manifold and christmas trees, main and emergency power, fire and gas detection, fire control, communications equipment, emergency shutdown systems, ballast control system, dynamic positioning systems and other systems and equipment critical to the safety of the installation are remotely controlled or monitored (salle de commande). Source: Canada Oil and Gas Installations Regulations, SOR/96-111, Canada, current to May 1, 2014. Regulations Source: Canada Oil and Gas Installations Regulations, SOR/96-118, February 2013.Regulations Source: Nova Scotia Offshore Petroleum Installations Regulations, SOR/95-191, Canada, current to May 31, 2012. RegulationsControl Station
Place on the installation from which personnel can monitor the status of the installation, initiate appropriate shutdown actions, and undertake any emergency communication. Source: ISO 13702:2015, Petroleum and natural gas industries — Control and mitigation of fires and explosions on offshore production installations — Requirements and guidelines, Second Edition, August 2015. Global StandardsControl Point
Definition(s)
Control Point
“Control point” means a work area other than a control station from which systems and equipment critical to the safety of the installation can be monitored and controlled (poste de commande). Source: Canada Oil and Gas Installations Regulations, SOR/96-111, Canada, current to May 1, 2014. Regulations Source: Canada Oil and Gas Installations Regulations, SOR/96-118, February 2013.Regulations Source: Nova Scotia Offshore Petroleum Installations Regulations, SOR/95-191, Canada, current to May 31, 2012. RegulationsContingency Plan
Definition(s)
Contingency Plan
“Contingency plan” means a plan that addresses abnormal conditions or emergencies that can reasonably be anticipated (plan d’urgence). Source: Canada Oil and Gas Installations Regulations, SOR/96-111, Canada, current to May 1, 2014. Regulations Source: Canada Oil and Gas Installations Regulations, SOR/96-118, February 2013. Regulations Source: Nova Scotia Offshore Area Petroleum Diving Regulations, SOR/95-189, Canada, current to May 31, 2012. Regulations Source: Nova Scotia Offshore Petroleum Installations Regulations, SOR/95-191, Canada, current to May 31, 2012. RegulationsContingency Plan
“Contingency plan” means a contingency plan referred to in paragraph 4(4)(i) (plan d’urgence). Source: Canada Oil and Gas Diving Regulations, SOR/88-600, February 2013. RegulationsContingency Plan
"Contingency plan" is a written document which provides for an organized plan of action for alerting and protecting the public within an area of exposure following the accidental release of a potentially hazardous volume of poisonous gas such as hydrogen sulfide. Source: Corporation Commission, Oil and Gas Conservation, Oklahoma Administrative Code 165:10, February 2013. RegulationsContingency Plan
A written document that shall provide an organized plan of action for alerting and protecting the public within an area of exposure prior to an intentional release, or following the accidental release of a potentially hazardous volume of hydrogen sulfide. Source: Oil and Gas Division, Texas Administrative Code, Title 16, Chapter 3, February 2013. RegulationsClassification Society
Definition(s)
Classification Society
“Classification society” means an independent organization whose purpose is to supervise the construction, ongoing maintenance and any modifications of an offshore platform in accordance with the society’s rules for classing offshore platforms and includes the American Bureau of Shipping, Lloyd’s Register of Shipping, Det norske Veritas Classification A/S and Bureau Veritas (société de classification). Source: Canada Oil and Gas Installations Regulations, SOR/96-111, Canada, current to May 1, 2014. Regulations Source: Canada Oil and Gas Installations Regulations, SOR/96-118, February 2013.Regulations Source: Nova Scotia Offshore Petroleum Installations Regulations, SOR/95-191, Canada, current to May 31, 2012. RegulationsChief
Definition(s)
Chief
“Chief” means the Chief Safety Officer (délégué) Source: Canada Oil and Gas Installations Regulations, SOR/96-111, Canada, current to May 1, 2014. Regulations Source: Canada Oil and Gas Installations Regulations, SOR/96-118, February 2013.Regulations Source: Nova Scotia Offshore Certificate of Fitness Regulations, SOR/95-187, Canada, current to May 31, 2012. Regulations Source: Nova Scotia Offshore Petroleum Installations Regulations, SOR/95-191, Canada, current to May 31, 2012. RegulationsChief
“Chief” means the chief of the division of oil and gas resources management. Source: Division of Mineral Resources Management - Oil and Gas, Ohio Administrative Code, Chapter 1501:9, January 2012. RegulationsChief
“Chief” means chief, division of oil and gas. Source: Division of Mineral Resources Management - Oil and Gas, Ohio Administrative Code, Chapter 1501:9, January 2012. RegulationsChief
“Chief” means chief, Division of Mineral Resources Management. Source: Division of Mineral Resources Management - Oil and Gas, Ohio Administrative Code, Chapter 1501:9, January 2012. RegulationsChief
“Chief” means the Chief Conservation Officer as designated pursuant to section 144 of the Act. Source: Nova Scotia Offshore Petroleum Occupational Health & Safety Requirements, Canada-Nova Scotia Offshore Petroleum Board, Canada, December 2000. RegulationsSecondary Line
Definition(s)
Secondary line
Secondary line means a pipe, or system of pipes, for:- returning petroleum to a natural reservoir; or
- conveying petroleum for use for petroleum exploration operations; or
- conveying petroleum for use for petroleum recovery operations; or
- conveying petroleum that is to be flared or vented; or
- conveying petroleum from a well, wherever located, to a terminal station in an offshore area without passing through another terminal station.
Scheduled Area
Definition(s)
Scheduled area
Scheduled area, in relation to a State or Territory, has the meaning given by Schedule 1. Source: Offshore Petroleum and Greenhouse Gas Storage Act 2006, Australia, amended 2012. LegislationRoyalty Rate
Definition(s)
Royalty rate
Royalty rate means the percentage rate at which royalty is payable by the holder under the Royalty Act in relation to that petroleum (disregarding any determination under section 9 of the Royalty Act in relation to a well). Source: Offshore Petroleum and Greenhouse Gas Storage Act 2006, Australia, amended 2012. LegislationRoyalty Act
Definition(s)
Royalty Act
Royalty Act means the Offshore Petroleum (Royalty) Act 2006. Source: Offshore Petroleum and Greenhouse Gas Storage Act 2006, Australia, amended 2012. LegislationRoyal Commission
Definition(s)
Royal Commission
Royal Commission has the same meaning as in the Royal Commissions Act 1902. Source: Offshore Petroleum and Greenhouse Gas Storage Act 2006, Australia, amended 2012. LegislationResponsible State Minister
Definition(s)
Responsible State Minister
Responsible State Minister, in relation to a State, means: (a) the Minister of the State who is authorised under a law of the State to perform the functions, and exercise the powers, of a member of the Joint Authority for the State under this Act; or (b) another Minister of the State acting for and on behalf of the Minister referred to in paragraph (a). Source: Offshore Petroleum and Greenhouse Gas Storage Act 2006, Australia, amended 2012. LegislationGraticular Section That Constitutes a Block
Definition(s)
Graticular section that constitutes a block
A reference in this Act to a graticular section that constitutes a block includes a reference to:- a graticular section only part of which constitutes a block; or
- a graticular section only parts of which constitute a block.
Graticular Section
Definition(s)
Graticular section
Graticular section has the meaning given by section 33. Source: Offshore Petroleum and Greenhouse Gas Storage Act 2006, Australia, amended 2012. LegislationResponsible Northern Territory Minister
Definition(s)
Responsible Northern Territory Minister
Responsible Northern Territory Minister means:- the Minister of the Northern Territory who is authorised under a law of the Northern Territory to perform the functions, and exercise the powers, of a member of the Joint Authority for the Northern Territory under this Act; or
- another Minister of the Northern Territory acting for and on behalf of the Minister referred to in paragraph (a).
Responsible Commonwealth Minister
Definition(s)
Responsible Commonwealth Minister
Responsible Commonwealth Minister means:- the Minister who is responsible for the administration of this Act; or
- another Minister acting for and on behalf of the Minister referred to in paragraph (a).
Renewal
Definition(s)
Renewal
Activity that discards an existing component, fitting, or portion of a piping circuit and replaces it with new or existing spare materials of the same or better qualities as the original piping components.
Source: API 570, Piping Inspection Code: In-service Inspection, Rating, Repair, and Alteration of Piping Systems, Fourth Edition, February 2016, with Addendum May 2017. Global StandardsRenewal
Renewal:- when used in relation to a petroleum exploration permit, petroleum retention lease or petroleum production licence—has the meaning given by subsection 11(1); or
- when used in relation to a greenhouse gas assessment permit or greenhouse gas holding lease—has the meaning given by subsection 11(2).
Regulatory Levies Act
Definition(s)
Regulatory Levies Act
Regulatory Levies Act means the Offshore Petroleum and Greenhouse Gas Storage (Regulatory Levies) Act 2003. Source: Offshore Petroleum and Greenhouse Gas Storage Act 2006, Australia, amended 2012. LegislationRegulated Operation
Definition(s)
Regulated operation
Regulated operation means:- an activity to which Chapter 2 applies; or
- an activity to which Chapter 3 applies.
Regulated operation
Regulated operation includes an activity to which the core regulatory provisions of a State or Territory PSLA apply. For this purpose, the core regulatory provisions are the provisions that substantially correspond to Chapter 2 or 3 of this Act. Source: Offshore Petroleum and Greenhouse Gas Storage Act 2006, Australia, amended 2012. LegislationRegistration Fees Act
Definition(s)
Registration Fees Act
Registration Fees Act means the Offshore Petroleum and Greenhouse Gas Storage (Registration Fees) Act 2006. Source: Offshore Petroleum and Greenhouse Gas Storage Act 2006, Australia, amended 2012. LegislationRegistered Holder
Definition(s)
Registered holder
Registered holder, in relation to a title, means the person whose name is shown in the Register kept under section 469 or 521 as the holder of the title. For this purpose, a title is a petroleum exploration permit, petroleum retention lease, petroleum production licence, infrastructure licence, pipeline licence, petroleum special prospecting authority, petroleum access authority, greenhouse gas assessment permit, greenhouse gas holding lease, greenhouse gas injection licence, greenhouse gas search authority or greenhouse gas special authority. Source: Offshore Petroleum and Greenhouse Gas Storage Act 2006, Australia, amended 2012. LegislationRegister
Definition(s)
Register
list issued by a certification body, an authority or another registration organization, for certificate holders or persons meeting predetermined criteria Note 1 to entry: A register can be publicly available or for in-house purposes. Source: ISO/IEC TS 17027:2014, Conformity assessment – Vocabulary related to competence of persons used for certification of persons, Global StandardsRegister
Register:- when used in Chapter 4—has the meaning given by section 467; or
- when used in Chapter 5—has the meaning given by section 519.