Glossary
Browse the IADC Lexicon alphabetically or by category. Get comprehensive definitions of drilling industry terms.
Secretary
Definition(s)
Secretary
"Secretary" means the duly appointed and qualified Secretary of the Commission or any person appointed by the Commission to act as such Secretary during the absence of the Secretary, his inability, or disqualification to act. Source: Corporation Commission, Oil and Gas Conservation, Oklahoma Administrative Code 165:10, February 2013. RegulationsSecretary
“Secretary” means the Secretary of the Board; secrétaire. Source: National Energy Board Act, R.S.C., 1985, c. N-7, Canada, current to April 29, 2013. LegislationSecretary
Secretary means the Secretary of the Department. Source: Offshore Petroleum and Greenhouse Gas Storage Act 2006, Australia, amended 2012. LegislationSecretary
"Secretary" means the Secretary of the U.S. Department of Labor. (A) May be referred to as the Assistant Secretary. Source: State of Wyoming Occupational Safety and Health Rules and Regulations for Oil and Gas Well Drilling, Revised January 8, 2013. RegulationsSecretary
The chief executive of the Department of Labour. *Indicates that the definition has been extracted from the HSE Act. Source: Approved Code of Practice for Managing Hazards to Prevent Major Industrial Accidents, Health and Safety in Employment Act 1992, Department of Labour, New Zealand, July 1994. Regulatory GuidanceSecretary
Secretary means the chief executive of the department. Source: Health and Safety in Employment Act 1992, Public Act 1992 No 96, New Zealand, as of 1 July 2011. LegislationIntact Condition
Definition(s)
Intact Condition
“Intact condition” means, with respect to a floating platform, that the platform is not in a damaged condition (condition intacte). 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. RegulationsHazardous Area
Definition(s)
Hazardous Area
Three-dimensional space in which a combustible or explolsive atmosphere can be expected to be present frequently enough to require special precautions for the control of potential ignition sources- Note: 1 to entry: Hazardous areas are typically defined by local, national or international standards (e.g. the National Electric Code (NEC) in the United States).
Hazardous Area
Three-dimensional space in which a flammable atmosphere can be expected to be present at such frequencies as to require special precautions for the control of potential ignition sources. 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 StandardsHazardous Area
“Hazardous area” means an area classified as hazardous in the Recommended Practice referred to in subsection (2) (zone dangereuse). 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. RegulationsHazardous Area
Area in which an explosive atmosphere is present, or may be expected to be present, in quantities such as to require special precautions for the construction, installation and use of equipment. Source: IEC 60079-14:2013, Explosive atmospheres – Part 14: Electrical installations design, selection and erection, Edition 5.0, November 2013. Global StandardsHazardous Area
Area in which an explosive gas atmosphere is present, or may be expected to be present, in quantities such as to require special precautions for the construction, installation and use of apparatus.[IEV 426-03-01, modified] Source: IEC 61892-7, Mobile and fixed offshore units – Electrical installations – Part 7: Hazardous areas. Global StandardsHazardous Area
Area in which an explosive atmosphere is present, or may be expected to be present, in quantities such as to require special precautions for the construction, installation and use of equipment- Note: 1 to entry: For the purposes of this standard, an area is a three-dimensional region or space.
Hazardous Area
Hazardous area: as defined in the standard NEN-EN-IEC 60079-10, “Electrical apparatus for explosive gas atmospheres”, Part 10: Classification of hazardous areas; July 1997; Source: Mining Regulation of the Netherlands, WJZ 02063603, Netherlands,16 December 2002. RegulationsHazardous Area
A hazardous area is an area on the unit where flammable gas-air mixtures are, or are likely to be, present in sufficient quantities and for sufficient periods of time such as to require special precautions to be taken in the selection, installation and use of machinery and electrical equipment. Source: Rules and Regulations for the Classification of Mobile Offshore Units, Part 7, Safety Systems, Hazardous Areas and Fire, June 2013, Lloyd’s Register, Global StandardsGastight Sealed (Secondary) Cell
Definition(s)
Gastight Sealed (secondary) Cell
A secondary cell which remains closed and does not release either gas or liquid when operated within the limits and temperature specified by the manufacturer. The cell may be equipped with a safety device to prevent dangerously high internal pressure. The cell does not require addition to the electrolyte and is designed to operate during its life in its original sealed state. Source: IEC 61892-6, Mobile and fixed offshore units – Electrical installations – Part 6: Installation. Global StandardsVented (Secondary) Battery Cell
Definition(s)
Vented (Secondary) Battery Cell (Syn. Open (Secondary) Cell)
A secondary cell having a cover provided with an opening through which gaseous products may escape. NOTE The opening may be fitted with a venting system. Source: IEC 61892-6, Mobile and fixed offshore units – Electrical installations – Part 6: Installation. Global StandardsValve-Regulated Battery Cell
Definition(s)
Valve-Regulated Battery Cell
A secondary cell which is closed under normal conditions but which has an arrangement which allows the escape of gas if the internal pressure exceeds a predetermined value. The cell cannot normally receive addition to the electrolyte. Source: IEC 61892-6, Mobile and fixed offshore units – Electrical installations – Part 6: Installation. Global StandardsSecondary Damage
Definition(s)
Secondary Damage
Damage to units or to their electrical installations, which can result as an indirect consequence of a lightning strike to a unit or to its immediate vicinity. A path to earth of low resistance may not prevent secondary damage, which may occur as a result of high values of induced, or resistance drop voltages produced by the passage of lightning currents. Source: IEC 61892-6, Mobile and fixed offshore units – Electrical installations – Part 6: Installation, Third Edition, December 2013. Global Standards Source: IEC 61892-6, Mobile and fixed offshore units – Electrical installations – Part 6: Installation. Global StandardsSafety Voltage
Definition(s)
Safety Voltage (Extra Low Voltage)
Voltage which does not exceed 50 V a.c. r.m.s. between conductors, or between any conductor and earth, in a circuit isolated from the supply by means such as a safety isolating transformer, or converter with separate windings; a voltage which does not exceed 50 V d.c. between conductors, or between any conductor and earth, in a circuit which is isolated from higher voltage circuits. NOTE 1 Consideration should be given to the use of equipment operating at less than 50 V under certain conditions, such as wet surroundings, exposure to heavy seas or powerful water jets where direct contact with live parts is involved. NOTE 2 The voltage limit should not be exceeded either at full load or no-load but it is assumed, for the purpose of this definition, that any transformer or converter is operated at its rated supply voltage. Source: IEC 61892-6, Mobile and fixed offshore units – Electrical installations – Part 6: Installation. Global StandardsPrimary Structural Damage
Definition(s)
Primary Structural Damage
Damage which can result from lightning strike to units which do not provide a path of low resistance to earth for the passage of lightning currents, for example units of non-metallic construction or those having substantial non-metallic members. Source: IEC 61892-6, Mobile and fixed offshore units – Electrical installations – Part 6: Installation, Third Edition, December 2013. Global Standards Source: IEC 61892-6, Mobile and fixed offshore units – Electrical installations – Part 6: Installation. Global StandardsOpen (Secondary) Cell
Definition(s)
Open (secondary) Cell
A secondary cell having a cover provided with an opening through which gaseous products may escape. NOTE The opening may be fitted with a venting system. Source: IEC 61892-6, Mobile and fixed offshore units – Electrical installations – Part 6: Installation. Global StandardsExtraneous Conductive Part
Definition(s)
Extraneous Conductive Part
Conductive part not forming a part of the electrical installation and liable to propagate a potential, including earth potential. Source: IEC 61892-6, Mobile and fixed offshore units – Electrical installations – Part 6: Installation. Global Standards Source: IEC 61892-7, Mobile and fixed offshore units – Electrical installations – Part 7: Hazardous areas. Global StandardsExposed Conductive Part
Definition(s)
Exposed Conductive Part
conductive part which can readily be touched and which is not normally alive, but which may become alive under fault conditions Note 1 to entry: Typical exposed conductive parts are walls of enclosures, operating handles, etc. [SOURCE: IEC 60050-441:1984, 441.11.10]. Source: IEC 61892-6, Mobile and fixed offshore units – Electrical installations – Part 6: Installation, Third Edition, December 2013. Global StandardsExposed Conductive Part
conductive part not forming a part of the electrical installation and liable to introduce an electric potential, generally the potential of a local earth [SOURCE: IEC 60050-195:1998, 195.06.11] Source: IEC 61892-6, Mobile and fixed offshore units – Electrical installations – Part 6: Installation, Third Edition, December 2013. Global StandardsExposed Conductive Part
Conductive part which can readily be touched and which is not normally alive, but which may become alive under fault conditions. NOTE Typical exposed conductive parts are walls of enclosures, operating handles, etc. Source: IEC 61892-6, Mobile and fixed offshore units – Electrical installations – Part 6: Installation. Global StandardsExposed Conductive Part
Conductive part which can readily be touched and which may become alive under fault conditions. NOTE Typical exposed conductive parts are walls of enclosures, operating handles, etc. Source: IEC 61892-7, Mobile and fixed offshore units – Electrical installations – Part 7: Hazardous areas. Global StandardsEquipotential Bonding
Definition(s)
Equipotential Bonding
provision of electric connections between conductive parts, intended to achieve equipotentiallity [SOURCE: IEC 60050-195:1998, 195.01.10]. Source: IEC 61892-6, Mobile and fixed offshore units – Electrical installations – Part 6: Installation, Third Edition, December 2013. Global StandardsEquipotential Bonding
Electrical connection putting various exposed conductive parts and extraneous conductive parts at a substantially equal potential. Source: IEC 61892-6, Mobile and fixed offshore units – Electrical installations – Part 6: Installation. Global StandardsElectric Surface Heating System
Definition(s)
Electric Surface Heating System
System of electric surface heating devices together with any controls, thermal insulation and protective cladding designed to meet a specified electric surface heating requirement. Source: IEC 61892-6, Mobile and fixed offshore units – Electrical installations – Part 6: Installation. Global StandardsElectric Surface Heating
Definition(s)
Electric Surface Heating
Heat generated in the surface layer of a body to be heated by electrical means in order to raise or maintain its temperature. Source: IEC 61892-6, Mobile and fixed offshore units – Electrical installations – Part 6: Installation. Global StandardsFloating Platform
Definition(s)
Floating Platform
“Floating platform” means a column-stabilized mobile offshore platform or a surface mobile offshore platform (plate-forme flottante). 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. RegulationsBonding
Definition(s)
Bonding
An electrical connection between two electrically conductive objects that is intended to significantly reduce potential differences.
Source: API RP 545 Recommended Practice for Lightning Protection of Aboveground Storage Tanks for Flammable or Combustible Liquids, First Edition, October 2009. Global StandardsBonding
Connection of non-current-carrying parts to ensure continuity of electrical connection, or to equalize the potential between parts. Source: IEC 61892-6, Mobile and fixed offshore units – Electrical installations – Part 6: Installation. Global StandardsAppropriate Authority
Definition(s)
Appropriate Authority
Governmental body and/or classification society with whose rules a unit is required to comply. Source: IEC 61892-6, Mobile and fixed offshore units – Electrical installations – Part 6: Installation. Global Standards Source: IEC 61892-7, Mobile and fixed offshore units – Electrical installations – Part 7: Hazardous areas. Global StandardsAppropriate Authority
In this section, “appropriate authority” means- with respect to a navigable water, the Minister of Transport; and
- [Repealed, 1996, c. 10, s. 239]
- with respect to any other facility, the Board.
Appropriate Authority
In this section and sections 110 and 111, “appropriate authority” means- with respect to a navigable water, the Minister of Transport, and
- [Repealed, 1996, c. 10, s. 244]
- with respect to any other utility, the Board; autorité compétente.
Drill Site
Definition(s)
Drill Site
Drill site In these Regulations, “drilling installation”, “drilling rig”, “drilling unit”, “drill site”, “installation”, “production installation”, “production operation”, “production site” and “subsea production system” have the same meaning as in subsection 2(1) of the Canada Oil and Gas Installations Regulations. Source: Canada Oil and Gas Drilling and Production Regulations, SOR/2009-315, February 2013. Regulations Source: Nova Scotia Offshore Petroleum Drilling and Production Regulations, SOR/2009-317, Canada, current to May 31, 2012. RegulationsDrill Site
“Drill site” means a location where a drilling rig is or is proposed to be installed (emplacement de forage). 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. RegulationsType of Protection
Definition(s)
Type of Protection
See protection, type of.
Source: API Recommended Practice 14FZ, Recommended Practice for Design, Installation, and Maintenance of Electrical Systems for Fixed and Floating Offshore Petroleum Facilities for Unclassified and Class I, Zone 0, Zone 1, and Zone 2 Locations, Second Edition, May 2013. Global StandardsType of Protection (Miscellaneous)
Measures applied in the construction of electrical equipment to prevent ignition of the surrounding explosive atmosphere by such apparatus (see 4.1.2). Source: IEC 60079-29-1, Explosive atmospheres – Part 29-1: Gas detectors – Performance requirements of detectors for flammable gases. Global StandardsSpecial Tool
Definition(s)
Special Tool (Miscellaneous)
Tool required to gain access to, or to adjust, controls. The design of the tool is intended to discourage unauthorised interference with the apparatus. Source: IEC 60079-29-1, Explosive atmospheres – Part 29-1: Gas detectors – Performance requirements of detectors for flammable gases. Global StandardsNominal Supply Voltage
Definition(s)
Nominal Supply Voltage (Miscellaneous)
Voltage that is given by manufacturers as the recommended operating voltage of their gas detection apparatus. Source: IEC 60079-29-1, Explosive atmospheres – Part 29-1: Gas detectors – Performance requirements of detectors for flammable gases. Global StandardsWarm-Up Time
Definition(s)
Warm-Up Time (not applicable to spot-reading apparatus) (times)
Time interval, with the apparatus in a stated atmosphere, between the time when the apparatus is switched on and the time when the indication reaches and remains within the stated tolerances (see Figures 1 and 2). Source: IEC 60079-29-1, Explosive atmospheres – Part 29-1: Gas detectors – Performance requirements of detectors for flammable gases. Global StandardsDrilling Unit
Definition(s)
Drilling Unit
"Drilling unit" means an area of a pool- established by the commission under AS 31.05.100 , either by order or by regulation;
- to which no more than one oil or gas well may be drilled; and
- from which no more than one oil or gas well may produce.