Glossary
Browse the IADC Lexicon alphabetically or by category. Get comprehensive definitions of drilling industry terms.
State PSLA
Definition(s)
State PSLA
State PSLA has the same meaning as in Part 6.9.1State PSLA
State PSLA means:- in relation to New South Wales—the Petroleum (Submerged Lands) Act 1982 of that State; or
- in relation to Victoria—the Petroleum (Submerged Lands) Act 1982 of that State; or
- in relation to Queensland—the Petroleum (Submerged Lands) Act 1982 of that State; or
- in relation to Western Australia—the Petroleum (Submerged Lands) Act 1982 of that State; or
- in relation to South Australia—the Petroleum (Submerged Lands) Act 1982 of that State; or
- in relation to Tasmania—the Petroleum (Submerged Lands) Act 1982 of that State.
Special Petroleum Exploration Permit
Definition(s)
Special petroleum exploration permit
Special petroleum exploration permit means:- a petroleum exploration permit granted under Division 4 of Part 2.2 of this Act; or
- an exploration permit granted under section 27 of the repealed Petroleum (Submerged Lands) Act 1967; or
- a petroleum exploration permit granted under Division 5 of Part 2.2 of this Act by way of the renewal of a permit referred to in paragraph (a) or (b); or
- an exploration permit granted under section 32 of the repealed Petroleum (Submerged Lands) Act 1967 by way of the renewal of a permit referred to in paragraph (b).
Special Greenhouse Gas Holding Lease
Definition(s)
Special greenhouse gas holding lease
Special greenhouse gas holding lease means a greenhouse gas holding lease granted under section 338. Source: Offshore Petroleum and Greenhouse Gas Storage Act 2006, Australia, amended 2012. LegislationSpatial
Definition(s)
Spatial
Spatial extent of an eligible greenhouse gas storage formation has the meaning given by subsection 21(3). Source: Offshore Petroleum and Greenhouse Gas Storage Act 2006, Australia, amended 2012. LegislationSite Plan
Definition(s)
Site plan
Site plan, in relation to an identified greenhouse gas storage formation, has the meaning given by section 24. Source: Offshore Petroleum and Greenhouse Gas Storage Act 2006, Australia, amended 2012. LegislationSite Closing Certificate
Definition(s)
Site closing certificate
Site closing certificate means a certificate issued under section 392. Source: Offshore Petroleum and Greenhouse Gas Storage Act 2006, Australia, amended 2012. LegislationSignificant Risk
Definition(s)
Significant risk
A risk that has been assessed as requiring risk controls/barriers to reduce that risk to an acceptable level. It is an important judgement for a company to determine which risks are considered "significant". This may be based on its process and criteria for risk acceptability. Significant risks may also have assessment and/or controls defined and/or required through regulatory compliance. Source: IOGP Report No. 510, Operating Management System Framework for controlling risk and delivering high performance in the oil and gas industry, International Association of Oil & Gas Producers, June 2014. Global StandardsSignificant risk
Significant risk has a meaning affected by section 25, 26, 27, 28 or 29. Source: Offshore Petroleum and Greenhouse Gas Storage Act 2006, Australia, amended 2012. LegislationSection 33 Block
Definition(s)
Section 33 block
Section 33 block means a block constituted as provided by section 33. Source: Offshore Petroleum and Greenhouse Gas Storage Act 2006, Australia, amended 2012. LegislationSecretary
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. LegislationSecondary 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 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 StandardsStabilisation
Definition(s)
Stabilisation (Times)
State when three successive readings of an apparatus, taken at 2 min intervals, indicates no changes greater than ±1 % of the measuring range. Source: IEC 60079-29-1, Explosive atmospheres – Part 29-1: Gas detectors – Performance requirements of detectors for flammable gases. Global StandardsSpecial State
Definition(s)
Special State (Signals and Alarms)
All states of the apparatus other than those in which monitoring of gas concentration takes place, for example warm-up, calibration mode or fault condition. Source: IEC 60079-29-1, Explosive atmospheres – Part 29-1: Gas detectors – Performance requirements of detectors for flammable gases. Global StandardsSampling Probe
Definition(s)
Sampling Probe (Supply of Gas to Instrument)
Separate sample line, which is attached to the apparatus as required, that may or may not be supplied with the apparatus. It is usually short (e.g. in the order of 1 m) and rigid (although it may be telescopic), but it may be connected by a flexible tube to the apparatus. Source: IEC 60079-29-1, Explosive atmospheres – Part 29-1: Gas detectors – Performance requirements of detectors for flammable gases. Global StandardsSample Line
Definition(s)
Sample Line (Supply of Gas to Instrument)
A means by which the gas being sampled is conveyed to the sensor including accessories, e.g. filter, water trap. Source: IEC 60079-29-1, Explosive atmospheres – Part 29-1: Gas detectors – Performance requirements of detectors for flammable gases. Global StandardsSensor
Definition(s)
Sensor
Instrument used to measure operating information such as pressure, flow or temperature. Source: IADC UBO / MPD Glossary, December 2011. Global StandardsSensor (Types of Instruments)
Assembly in which the sensing element is housed and that may also contain associated circuit components. Source: IEC 60079-29-1, Explosive atmospheres – Part 29-1: Gas detectors – Performance requirements of detectors for flammable gases. Global StandardsSensor
Sensor means any unit external to the S-VDR, to which the S-VDR is connected and from which it obtains data to be recorded. Source: IMO Resolution MSC.163(78), Recommendation on Performance Standards for Shipborne Simplified Voyage Data Recorders (S-VDRs), 17 May 2004, International Maritime Organization. Regulatory GuidanceStand-Alone Control Unit
Definition(s)
Stand-Alone Control Unit (Types of Instruments)
Fixed gas detection control units intended to provide meter indication, alarm functions, output contacts and/or alarm signal outputs when utilized with stand-alone gas detection apparatus. Source: IEC 60079-29-1, Explosive atmospheres – Part 29-1: Gas detectors – Performance requirements of detectors for flammable gases. Global StandardsStand-Alone Gas Detection Apparatus
Definition(s)
Stand-Alone Gas Detection Apparatus (Types of Instruments)
Fixed gas detection apparatus that provide a conditioned electronic signal or output indication to a generally accepted industry standard (such as 4-20 mA or 3-15 psi), intended to be utilized with stand-alone control units or signal processing data acquisition, central monitoring and similar systems, which typically process information from various locations and sources including, but not limited to gas detection apparatus. Source: IEC 60079-29-1, Explosive atmospheres – Part 29-1: Gas detectors – Performance requirements of detectors for flammable gases. Global StandardsSpot-Reading Apparatus
Definition(s)
Spot-Reading Apparatus (Types of Instruments)
Apparatus intended to be used for short, intermittent or irregular periods of time as required (typically 5 min or less). Source: IEC 60079-29-1, Explosive atmospheres – Part 29-1: Gas detectors – Performance requirements of detectors for flammable gases. Global StandardsSecondary 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.