Glossary
Browse the IADC Lexicon alphabetically or by category. Get comprehensive definitions of drilling industry terms.
2008 IS Code
Definition(s)
2008 IS Code
2008 IS Code means the International Code on Intact Stability, 2008, as adopted by resolution MSC.267(85). Source: IMO resolution A.1021(26), Guidelines for ships operating in polar waters, 18 January 2010, International Maritime Organization. Regulatory Guidance25% (50%) Drainage time
Definition(s)
25% (50%) Drainage Time
25% (50%) drainage time is the time for 25% (50%) of the liquid content of a foam to drain out. Source: IMO MSC.1/Circ.1312, Revised Guidelines for the performance and testing criteria, and surveys of foam concentrates for fixed fire-extinguishing systems, 10 June 2009, International Maritime Organization. Regulatory GuidanceA.D.A.S.
Definition(s)
A.D.A.S. The Australian Diver Accreditation Scheme. Source: Guidelines for Occupational Diving 2004, Occupational Safety and Health Service, New Zealand, updated October 2010. Regulatory Guidance
Abandoned
Definition(s)
Abandoned
“Abandoned”, in relation to a well, means a well or part of a well that has been permanently plugged (abandonné). 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. Regulations 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 GuidanceAbsolute Risk
Definition(s)
Absolute Risk
Level of risk expressed with standard units of measurement that allows for independent interpretation without comparison to estimates of other risks. Sample Usage: Analysts used the absolute risk estimate for a particular scenario to determine if a mitigation measure was cost effective. Annotation:- The absolute risk value of a scenario has a meaningful independent interpretation in contrast to relative risk that is meaningful only in comparison to other similarly constructed risk values. 2) Can be measured using annualized lives lost, expected economic impact, or other metrics but it is not a ratio of risks.
- Can measure absolute level of risk pre-or post-risk reduction measures.
Absolute Risk (Unmitigated)
Definition(s)
Absolute Risk (Unmitigated)
Level of risk that exists without risk controls. Sample Usage: An absolute risk value for the facility, assuming no security measures, was determined at the outset of the analysis. Extended Definition: a hypothetical condition that would exist if risk mitigation measures were absent. Annotation:- The application of absolute risk to natural hazards is straightforward. It is a reasonable approximation of what the risk would be if all countermeasures were actually removed. It is commonly used as a step in calculating the risk-reduction value of existing or prospective countermeasures.
- The use of absolute risk for crime and terrorism involves limitations. In this context, absolute risk involves imagining that no countermeasures are in place. However, it does not involve imagining the response of adaptive intelligent adversaries in this absence of countermeasures. As a result, it is a poor approximation of what the actual risk would be if the countermeasures were removed.
- It is critical to be transparent about these assumptions when comparing any crime-or terrorism-related absolute risk (or calculation derived therein) to any other absolute risk-derived calculation.
Acceptable Risk
Definition(s)
Acceptable Risk
Level of risk at which, given costs and benefits associated with risk reduction measures, no action is deemed to be warranted at a given point in time. Sample Usage: Extremely low levels of water-borne contaminants can be deemed an acceptable risk. Source: DHS Risk Lexicon, U.S. Department of Homeland Security, 2010 Edition. September 2010 Regulatory GuidanceAcceptance Criteria
Definition(s)
Acceptance Criteria
Defined limits placed on characteristics of materials, products, equipment, processes, or services. Source: API Specification 16A, Specification for Drill-through Equipment, Fourth Edition, April 2017. Global StandardsAcceptance Criteria
Defined limits placed on characteristics of materials, equipment, processes, or service.
Source: API STANDARD 16AR, Standard for Repair and Remanufacture of Drill-through Equipment, First Edition, April 2017. Global StandardsAcceptance Criteria
Specified limits of acceptability applied to process or product characteristics. Source: API Technical Report 17TR7, Verification and Validation of Subsea Connectors, First Edition, April 2017. Global Standards Source: ISO 16530-1:2017, Petroleum and natural gas industries - Well integrity – Part 1: Life cycle governance, First Edition, March 2017. Global Standards Source: API Spec Q2, Specification for Quality Management System Requirements for Service, Supply Organizations for the Petroleum and Natural Gas Industries, Upstream Segment, First Edition, December 2011. Global Standards Source: API SPEC Q1, Specification for Quality Management System Requirements for Manufacturing Organizations for the Petroleum and Natural Gas Industry, Ninth Edition, June 2013 (Errata 2, March 2014). Global StandardsAcceptance Criteria
Acceptance criteria (definition at Rule 2(a)) means the upper limit of acceptable risk related to major accidents and risk related to the environment. Major accident means an accident involving several serious personal injuries or deaths or an accident that jeopardises the integrity of the facility. Environmental risk means the risk of pollution. Source: Guidance Notes on Petroleum and Natural Gas (Safety in Offshore Operations) Rules, 2008, Oil Industry Safety Directorate (India), 2012. Regulatory GuidanceAcceptance Criteria
Defined limits placed on characteristics of materials, products or services . Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards Source: API SPEC 16A, Specification for Drill-through Equipment, Third Edition, June 2004 (Errata/Supplement November 2004). Global Standards Source: API SPEC 16C, Specification for Choke and Kill Systems, First Edition, January 1993 (Reaffirmed 2001). Global StandardsAcceptance Criteria
Specified limits of acceptability applied to process, service, or product characteristics. Source: API Spec Q2, Specification for Quality Management System Requirements for Service, Supply Organizations for the Petroleum and Natural Gas Industries, Upstream Segment, First Edition, December 2011. Global StandardsAcceptance Criteria
Specified limits of acceptability applied to process or product characteristics. Source:ISO/TS 29001:2010(E).Global StandardsAcceptance Criteria
The limits for the risk to be acceptable (Arbo Regulation Article 3.2). Source: NOGEPA Industrial Guideline No. 7, Rescue at Sea, Netherlands, Version 0, January 2008. Global StandardsAcceptance Criteria
“Acceptance criteria” means criteria used to express a risk level that is considered acceptable for the activity in question, limited to the high level expressions of risk. Source: Petroleum and Natural Gas (Safety in Offshore Operations) Rules, 2008, India, 18th June 2008. RegulationsAcceptance Criteria
Defined limits placed on characteristics of materials, products, or services. Source: API SPEC 16RCD, Specification for Drill Through Equipment—Rotating Control Devices, Upstream Segment, First Edition, February 2005. Global StandardsAccess
Definition(s)
Access
The ability and means to communicate with or otherwise interact with a system, to use system resources to handle information, to gain knowledge of the information the system contains, or to control system components and functions. From: CNSSI 4009 Source: NICCS™ Portal Cybersecurity Lexicon, National Initiative for Cybersecurity Careers and Studies (https://niccs.us-cert.gov/glossary) as of 11 November 2015, Global StandardsAccess
Handling of materials and transport routes, access and evacuation routes: The terms transport, access and evacuation routes also include stairs, doors, hatches, etc. Source: Guidance Notes on Petroleum and Natural Gas (Safety in Offshore Operations) Rules, 2008, Oil Industry Safety Directorate (India), 2012. Regulatory GuidanceAccess
Ability and means to communicate with or otherwise interact with a system in order to use system resources.- NOTE: Access may involve physical access (authorization to be allowed physically in an area, possession of a physical key lock, PIN code, or access card or biometric attributes that allow access) or logical access (authorization to log in to a system and application, through a combination of logical and physical means).
Accident
Definition(s)
Accident
“Accident” means a fortuitous event that results in the death of or injury to any person involved in a diving operation (accident). Source: Canada Oil and Gas Diving Regulations, SOR/88-600, February 2013. Regulations Source: Nova Scotia Offshore Area Petroleum Diving Regulations, SOR/95-189, Canada, current to May 31, 2012. RegulationsAccident
Accident includes the contraction of a disease. Source: Offshore Petroleum and Greenhouse Gas Storage Act 2006, Australia, amended 2012. LegislationAccident
Accident means an event that. (a) causes any person to be harmed; or (b) in different circumstances, might have caused any person to be harmed. Source: Health and Safety in Employment Act 1992, Public Act 1992 No 96, New Zealand, as of 1 July 2011. LegislationAccident
“Accident” means an incident that results in a hazard causing harm to a worker. Source: Nova Scotia Offshore Petroleum Occupational Health & Safety Requirements, Canada-Nova Scotia Offshore Petroleum Board, Canada, December 2000. RegulationsAccident
Event or chain of events which cause, or could have caused, injury, illness and/or damage (loss) to assets, the environment or third parties. Source: ISO 17776:2000, Petroleum and natural gas industries – Offshore production installations – Guidelines on tools and techniques for hazard identification and risk assessment. GlobalStandardsAccident
See Incident. As low as reasonably practicable (ALARP) To reduce a risk to a level which is ‘as low as reasonably practicable’ involves balancing reduction in risk against the time, trouble, difficulty and cost of achieving it. This level represents the point, objectively assessed, at which the time, trouble, difficulty and cost of further reduction measures become unreasonably disproportionate to the additional risk reduction obtained. Source: OGP Report No. 6.36/210, Guidelines for the Development and Application of Health, Safety and Environmental Management Systems, International Association of Oil & Gas Producers, July 1994. Global StandardsAccident
An event that causes any person to be harmed, or in different circumstances might have caused any person to be harmed. 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 GuidanceAccident Event
Definition(s)
Accident Event
An event that is assessed to be inappropriate and significant in the sequence of events that led to the marine casualty or marine incident (e.g. human erroneous action, equipment failure). Source: IMO resolution A.1075(28), Guidelines to assist investigators in the implementation of the Casualty Investigation Code, 4 December 2013, Regulatory GuidanceAccidental Hazard
Definition(s)
Accidental Hazard
Source of harm or difficulty created by negligence, error, or unintended failure. Sample Usage: The chemical storage tank in the loading area without a concrete barrier may present an accidental hazard. Source: DHS Risk Lexicon, U.S. Department of Homeland Security, 2010 Edition. September 2010 Regulatory GuidanceAccidents That Have Led to Work Disability
Definition(s)
Accidents That Have Led to Work Disability
Accidents that have led to work disability and absence pursuant to the first subsection, litera c, means accidents with the result that the injured person is unable to return to work, or cannot perform his/her normal work tasks in the following or subsequent shifts. This also includes cases where the injury occurs on the last day of a work period. Source: Guidelines Regarding the Management Regulations, Norway, updated December 2012. Regulatory GuidanceAccord Acts
Definition(s)
Accord Acts
“Accord Acts” means- the Canada-Newfoundland Atlantic Accord Implementation Act, and
- the Canada-Nova Scotia Offshore Petroleum Resources Accord Implementation Act; lois de mise en oeuvre.
Accord Acts
The Canada-Nova Scotia Offshore Petroleum Resources Accord Implementation Act and Canada-Nova Scotia Offshore Petroleum Resources Accord Implementation (Nova Scotia) Act, Canada-Newfoundland Atlantic Accord Implementation Act and the Canada Newfoundland and Labrador Atlantic Accord Implementation (Newfoundland and Labrador) Act. Source: Incident Reporting and Investigation Guidelines, The Canada-Nova Scotia Offshore Petroleum Board and Canada-Newfoundland and Labrador Offshore Petroleum Board, Canada, November 30, 2012. Regulatory Guidance 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: 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 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: Nova Scotia Offshore Petroleum Occupational Health & Safety Requirements, Canada-Nova Scotia Offshore Petroleum Board, Canada, December 2000. RegulationsAcknowledge
Definition(s)
Acknowledge
Manual response to the receipt of an alert or call. Source: IMO resolution A.1021(26), Code on Alarms and Indicators, 2009, 18 January 2010, International Maritime Organization. Regulatory GuidanceAcknowledgement of Compliance (AoC)
Definition(s)
Acknowledgement of Compliance (AoC)
An Acknowledgement of Compliance (AoC) is a statement from the Petroleum Safety Authority Norway that expresses the authorities' confidence that petroleum activities can be carried out using the 27 facility within the framework of the regulations. Source: Guidelines Regarding the Framework Regulations, Norway, updated December 2012. Regulatory GuidanceAcquiring
Definition(s)
Acquiring
Acquiring as mentioned in the second subsection, includes active searching in internal and external information sources. Source: Guidelines Regarding the Management Regulations, Norway, updated December 2012. Regulatory GuidanceAct
Definition(s)
Act
“Act” means the Canada Oil and Gas Operations Act (Loi). Source: Canada Oil and Gas Installations Regulations, SOR/96-111, Canada, current to May 1, 2014. Regulations Source: Canada Oil and Gas Drilling and Production Regulations, SOR/2009-315, February 2013. Regulations Source: Canada Oil and Gas Geophysical Operations Regulations, SOR/96-117, Canada, current to April 29, 2013. Regulations Source: Canada Oil and Gas Installations Regulations, SOR/96-118, February 2013. Regulations 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 GuidanceACT
The assumed malevolent scenario under study.
Source:API STANDARD 780, Security Risk Assessment Methodology for the Petroleum and Petrochemical Industries, First Edition, May 2013. Global StandardsAct
“Act” means the Oil and Gas Production and Conservation Act (Loi). Source: Canada Oil and Gas Diving Regulations, SOR/88-600, February 2013. RegulationsAct
“Act” means Part II of the Canada Labour Code (Loi). Source: Canada Oil and Gas Occupational Safety and Health Regulations, SOR/87-612, February 2013. Regulations Source: Oil and Gas Occupational Safety and Health Regulations, SOR/87-612, Canada, current to April 29, 2013. RegulationsAct
ACT shall mean the Oil and Gas Conservation Act of the State of Colorado. Source: Oil and Gas Conservation Commission, Practice and Procedure, Code of Colorado Regulations, 2 CCR 404-1, February 2013. RegulationsAct
“ACT” means automatic custody transfer. Source: Oil and Gas, New Mexico Administrative Code Title 19, Chapter 15, January 2013. RegulationsAct
Act means the OCS Lands Act, as amended (43 U.S.C. 1331 et seq.). Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). RegulationsAct
Act means the Outer Continental Shelf Lands Act of 1953 (43 U.S.C. 1331 et seq. ), as amended by the Outer Continental Shelf Lands Act Amendments of 1978 (Pub. L. 95-372). Source: Outer Continental Shelf Activities, 33 CFR 140-147 (2013). RegulationsAct
"Act" means State of Wyoming Occupational Health and Safety Act, as amended 1992. Source: State of Wyoming Occupational Safety and Health Rules and Regulations for Oil and Gas Well Drilling, Revised January 8, 2013. RegulationsAct
Act means the Health and Safety in Employment Act 1992. Source: Health and Safety in Employment (Petroleum Exploration and Extraction) Regulations 2013, SR 2013/208, New Zealand, as of May 2013. RegulationsACT
Automatic custody transfer. API RP 500, Recommended Practice for Classification of Locations for Electrical Installations at Petroleum Facilities Classified as Class I, Division 1 and Division 2, Third Edition, December 2012, Global StandardsAct
Act—The Oil and Gas Act (58 P. S. § § 601.101—601.605). Source: Oil and Gas Wells, Pennsylvania Code, Title 25, Chapter 78, December 2012. RegulationsAct
Act means the Canada-Nova Scotia Offshore Petroleum Resources Accord Implementation Act. Source: Nova Scotia Offshore Area Petroleum Geophysical Operations Regulations, SOR/95-144, Canada, current to May 31, 2012. Regulations Source: Nova Scotia Offshore Certificate of Fitness Regulations, SOR/95-187, Canada, current to May 31, 2012. 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. Regulations Source: Nova Scotia Offshore Petroleum Drilling and Production Regulations, SOR/2009-317, Canada, current to May 31, 2012. Regulations 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 Guidance Source: Nova Scotia Offshore Petroleum Occupational Health & Safety Requirements, Canada-Nova Scotia Offshore Petroleum Board, Canada, December 2000. RegulationsAct
Act means the Canada Newfoundland Atlantic Accord Implementation Act. 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 GuidanceAct
The Accord Acts and the Canada Oil and Gas Operations Act. 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 GuidanceAct
Act means the Offshore Petroleum and Greenhouse Gas Storage Act 2006. Source: Offshore Petroleum and Greenhouse Gas Storage (Environment) Regulations 2009 (Statutory Rules 1999 No. 228 as amended), Australia, prepared on 1 January 2012. Regulations Source: Offshore Petroleum and Greenhouse Gas Storage (Resource Management and Administration) Regulations 2011 (Select Legislative Instrument 2011 No. 54 as amended), Australia, prepared on 1 January 2012. Regulations Source: Offshore Petroleum and Greenhouse Gas Storage (Safety) Regulations 2009 (Select Legislative Instrument 2009 No. 382 as amended), Australia, prepared on 1 January 2012. RegulationsThis Act
This Act includes the regulations. Source: Offshore Petroleum and Greenhouse Gas Storage Act 2006, Australia, amended 2012. LegislationAct, The
The enabling legislation that creates NOPSEMA, provides its functions and powers for its OHS inspectors and imposes duties on those who are regulated by NOPSEMA. The Act has changed over time:- From 1st January 2005 to 30th June 2008: The Petroleum (Submerged Lands) Act 1967
- From 1st July 2008 to 20th November 2008 The Offshore Petroleum Act 2006
- From 21st November 2008: The Offshore Petroleum and Greenhouse Gas Storage Act 2006
Act
The Canada Oil and Gas Operations Act, the Canada-Nova Scotia Atlantic Accord Implementation Act and the Canada-Newfoundland and Labrador Atlantic Accord Implementation Act. 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 GuidanceAct
Act means the Health and Safety in Employment Act 1992. Source: Health and Safety in Employment (Mining Administration) Regulations 1996, SR 1996/220, New Zealand, as of January 2011. RegulationsAct
“Act” means the Oilfields (Regulation and Development) Act, 1948 (53 of 1948. Source: Petroleum and Natural Gas (Safety in Offshore Operations) Rules, 2008, India, 18th June 2008. RegulationsAct
Act: Mijnbouwwet. Source: Mining Decree of the Netherlands, Netherlands, 2003 (as amended in 2007). LegislationAct
“Act” means the Petroleum Act, 1934 (30 of 1934). Source: The Petroleum Rules, 2002, India, 13th March 2002. RegulationsAct
“Act” means the Petroleum Act, 1934 (30 of 1934. Source: The Petroleum Rules, 1976, India, 1976. RegulationsActive Substance
Definition(s)
Active Substance
“Active Substance” means a substance or organism, including a virus or a fungus, that has a general or specific action on or against Harmful Aquatic Organisms and Pathogens. Source: International Convention for the Control and Management of Ships’ Ballast Water and Sediments, 2004. LegislationActive Substances
Active Substances - means a substance or organism, including a virus or a fungus that has a general or specific action on or against Harmful Aquatic Organisms and Pathogens. Source: Resolution MEPC.174(58), revised Guidelines for approval of ballast water management systems (G8), 10 October 2008, International Maritime Organization. Regulatory Guidance Source: Resolution MEPC.169(57), revised Procedure for approval of ballast water management systems that make use of Active Substances (G9), 4 April 2008, International Maritime Organization. Regulatory Guidance Source: Resolution MEPC.140(54), Guidelines for approval and oversight of prototype ballast water treatment technology programmes (G10), 24 March 2006, International Maritime Organization. Regulatory GuidanceActivity-Specific Operating Guidelines (ASOG)
Definition(s)
Activity-Specific Operating Guidelines (ASOG)
Guidelines on the operational, environmental and equipment performance limits for the location and specific activity.(For drilling operations, the ASOG may be known as the Well-Specific Operating Guidelines(WSOG)). Source: IMO MSC.1/Circ.1580, GUIDELINES FOR VESSELS AND UNITS WITH DYNAMIC POSITIONING (DP) SYSTEMS, 16 June 2017, International Maritime Organization. Regulatory GuidanceActivity-Specific Operating Guidelines (ASOG)
Activity-Specific Operating Guidelines (ASOG) means guidelines on the operational, environmental and equipment performance limits for the location and specific activity. (For drilling operations, the ASOG may be known as the Well-Specific Operating Guidelines (WSOG)). Source: IMO MSC.1/Circ.1580, GUIDELINES FOR VESSELS AND UNITS WITH DYNAMIC POSITIONING (DP) SYSTEMS, 16 June 2017, International Maritime Organization. Regulatory GuidanceActual Opportunity
Definition(s)
Actual Opportunity
An actual opportunity means that the employees are involved sufficiently early in the decision process for their input to amount to part of the basis for making decisions. Source: Guidelines Regarding the Framework Regulations, Norway, updated December 2012. Regulatory GuidanceActuating Force
Definition(s)
Actuating Force
Actuating force means the force required to set the actuating mechanism. Source: IMO Resolution MSC.81(70), Revised Recommendation on Testing of Life-Saving Appliances, 11 December 1998, International Maritime Organization. Regulatory GuidanceActuating Mechanism
Definition(s)
Actuating Mechanism
Actuating mechanism means the mechanism which, when operated, allows the liferaft to be released automatically. Source: IMO Resolution MSC.81(70), Revised Recommendation on Testing of Life-Saving Appliances, 11 December 1998, International Maritime Organization. Regulatory GuidanceAcute Pollution
Definition(s)
Acute Pollution
Acute pollution is defined in Section 38 of the Pollution Control Act (in Norwegian only) as “pollution of importance, which happens suddenly, and which is not allowed according to provision in or pursuant to this Act”. This means that an accidental discharge can be considered acute pollution even if limit values in a permit granted pursuant to Section 11 of the Pollution Control Act (in Norwegian only), have not been exceeded. An example of this is an abnormal discharge situation with high concentrations of oil in water over a short period of time, even if this does not lead to overruns in relation to the permit in the form of a monthly average. Similarly, pollution can be deemed acute and the harmful effects on the environment can be serious, even if the pollution develops gradually and over a longer period of time, for example in connection with leaks from tanks, pipelines, etc. In each individual case, the operator shall determine whether the discharge entails a need for notification or reporting. Source: Guidelines Regarding the Management Regulations, Norway, updated December 2012. Regulatory GuidanceAcute Pollution
Acute pollution means pollution of significance which occurs suddenly and should take into account worst case discharge scenario from the facility. Typical examples are larger oil spill due to pipe rupture or a blow out from a well. Source: Guidance Notes on Petroleum and Natural Gas (Safety in Offshore Operations) Rules, 2008, Oil Industry Safety Directorate (India), 2012. Regulatory GuidanceAdaptive Risk
Definition(s)
Adaptive Risk
Category of risk that includes threats intentionally caused by humans. Sample Usage: A terrorist plot to attack a public transportation system can be categorized as an adaptive risk. Annotation: Adaptive risks can include insider threats, civil disturbances, terrorism, or transnational crime. Those threats are caused by people that can change their behavior or characteristics in reaction to prevention, protection, response, or recovery measures taken. Source: DHS Risk Lexicon, U.S. Department of Homeland Security, 2010 Edition. September 2010 Regulatory GuidanceAdequate
Definition(s)
Adequate
Adequate: equal to the requirement or occasion; fully sufficient, suitable or fit (The Macquarie Dictionary Online © 2007). Source: NOPSEMA Guidance note: Safety Case Content and Level of Detail, N-04300-GN0106, Australia, Revision 5, December 2012. Regulatory GuidanceAdequate
- in relation to ventilation, means where the concentration of the inflammable gas in gas-air mixture does not reach the lower inflammable limit, or
- where applied to provision of facilities for fire-fighting means the facilities so provided are in accordance with the prevalent recognized standards or codes safety.