Required Relief Rate

Required Relief Rate

Definition(s)


Required Relief Rate

Estimated flow rate that needs to be relieved to prevent the equipment pressure from exceeding the specified design value.

Source: API STD 521, Pressure-relieving and Depressuring Systems, Sixth Edition, January 2014. Global Standards
Required Thickness

Required Thickness

Definition(s)


Required thickness

The minimum thickness without corrosion allowance for each element of a pressure vessel based on the appropriate design code calculations and code allowable stress that consider pressure, mechanical, and structural loadings. Alternately, required thickness can be reassessed and revised using FFS analysis in accordance with API 579-1/ASME FFS-1.

Source: API 510, Pressure Vessel Inspection Code: In-service Inspection, Rating, Repair, and Alteration, Tenth Edition, May 2014, with Addendum May 2017. Global Standards

Required thickness

The minimum thickness without corrosion allowance for each element of a pressure vessel based on the appropriate design code calculations and code allowable stress that consider pressure, mechanical and structural loadings. Alternately, required thickness can be reassessed using fitness for service analysis in accordance with API 579. Source: API 510, Pressure Vessel Inspection Code: In-Service Inspection, Rating, Repair, and Alteration Downstream Segment, Ninth Edition, June 2006. Global Standards
Requirement

Requirement

Definition(s)


Requirement

Need or expectation that is stated, generally implied or obligatory.
  • Note 1 to entry: “Generally implied” means that it is custom or common practice for the organization and interested parties that the need or expectation under consideration is implied.
  • Note 2 to entry: A specified requirement is one that is stated, for example in documented information.
Source: ISO/IEC 27000:2014, Information technology — Security techniques — Information security management systems — Overview and vocabulary, Third Edition, January 2014. Global Standards
Rerate

Rerate

Definition(s)


Rerate

The act of changing the lifting capacity or operations of a crane. NOTE Refer to 5.5 [Crane Rating]. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Seventh Edition, December 2014. Global Standards
Rerating

Rerating

Definition(s)


Rerating

A change in the design temperature, design pressure or the maximum allowable working pressure of a piping system (sometimes called rating).
  • NOTE: A rerating may consist of an increase, a decrease, or a combination of both. Derating below original design conditions is a means to provide increased corrosion allowance.
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 Standards

Rerating

A change in either the design temperature rating, the MDMT or the MAWP rating of a vessel. The design temperature and MAWP of a vessel may be increased or decreased because of a rerating. Derating below original design conditions is a permissible way to provide for additional corrosion allowance.

Source: API 510, Pressure Vessel Inspection Code: In-service Inspection, Rating, Repair, and Alteration, Tenth Edition, May 2014, with Addendum May 2017. Global Standards

Rerating

A change in either the design temperature rating, the MDMT or the MA WP rating of a vessel. The design temperature and maximum allowable working pressure of a vessel may be increased or decreased because of a rerating. Derating below original design conditions is a permissible way to provide for additional corrosion allowance. Source: API 510, Pressure Vessel Inspection Code: In-Service Inspection, Rating, Repair, and Alteration Downstream Segment, Ninth Edition, June 2006. Global Standards
Rescue

Rescue

Definition(s)


Rescue

"Rescue". An operation to retrieve persons in distress, provide for their initial medical or other needs, and deliver them to a place of safety. Source: IMO Resolution MSC.70(69), adoption of amendments to the International Convention on Maritime Search and Rescue (SAR), 1979, 18 May 1998, International Maritime Organization. Legislation  

Rescue

Process by which those who have entered the sea directly or in survival craft/liferafts are retrieved to a place where medical assistance is available. Source: ISO 15544:2000, Petroleum and natural gas industries – Offshore production installations – Requirements and guidelines for emergency. Global Standards
Rescue Analysis

Rescue Analysis

Definition(s)


Rescue Analysis

A systematic method according to which it can be ascertained whether the measures and means described in the emergency plan of the mining installation are adequate and sufficient for the prevention of persons falling overboard and possible loss of life. In other words: are the risks within the acceptance criteria. Source: NOGEPA Industrial Guideline No. 7, Rescue at Sea, Netherlands, Version 0, January 2008. Global Standards
Rescued

Rescued

Definition(s)


Rescued

Rescued means being transferred to a safe haven alive. Source: NOGEPA Industrial Guideline No. 6, Standby Vessels, Netherlands, Version 1, June 2004. Global Standards
Reserve Strength Ratio

Reserve Strength Ratio

Definition(s)


Reserve Strength Ratio

A measure of the ultimate load carrying capacity of a platform, defined as the ratio of the base shear at ultimate capacity to the base shear from the 1 00-year reference criteria. NOTE For the Gulf of Mexico this is the full population hurricane. Source: API RP 2SIM, Structural Integrity Management of Fixed Offshore Structures, First Edition, November 2014. Global Standards
Reservoir

Reservoir

Definition(s)


Reservoir

"Reservoir" means the same as "pool" in AS 31.05.170. Source: Alaska Oil and Gas Conservation Commission, Definitions, Alaska Admin. Code tit. 20, § 25.990, December 7, 2012. Regulations  

Reservoir

An economic hydrocarbon-bearing zone. Source: IADC UBO / MPD Glossary, December 2011. Global Standards  

Reservoir

A roofed excavation for the storage of petroleum liquids. Source: Petroleum Safety Orders--Drilling and Production, Definitions, California Code of Regulations, 8 CCR § 6505, December 2012. Regulations  

Reservoir

"Reservoir" means pool or common source of supply. Source: Oil and gas Conservation, North Dakota Administrative Code, Chapter 43-02-03, April 2012. Regulations  

Reservoir

A storage tank for BOP control system fluid. Source: API SPEC 16D, Specification for Control Systems for Drilling Well Control Equipment and Control Systems for Diverter Equipment, Upstream Segment, Second Edition, July 2004. Global Standards  
Residual Current

Residual Current

Definition(s)


Residual Current

part of the total current that is not constituted from harmonic tidal components (i.e. the tidal stream) NOTE Residual currents are caused by a variety of physical mechanisms and comprise a large range of natural frequencies and magnitudes in different parts of the world. Source: API RP 2MET, Derivation of Metocean Design and Operating Conditions, First Edition, November 2014. Global Standards
Residual Field

Residual Field

Definition(s)


Residual Field

Remaining magnetic field retained by ferromagnetic materials after they have been exposed to a magnetic force. Source: API RP 5A5, Field Inspection of New Casing, Tubing, and Plain-end Drill Pipe, Reaffirmed August 2010. Global Standards
Residual Risk

Residual Risk

Definition(s)


Residual Risk

Risk that remains after controls have been implemented. Source: ISO 16530-1:2017, Petroleum and natural gas industries — Well integrity – Part 1: Life cycle governance, First Edition, March 2017. Global Standards

Residual Risk

Risk that remains after risk management measures have been implemented.

Source:API STANDARD 780, Security Risk Assessment Methodology for the Petroleum and Petrochemical Industries, First Edition, May 2013. Global Standards

Residual Risk

Risk that remains after risk management measures have been implemented. Sample Usage: While increased patrols lessened the likelihood of trespassers, residual risk remained due to the unlocked exterior doors. Synonym: unmitigated risk (residual risk). Source: DHS Risk Lexicon, U.S. Department of Homeland Security, 2010 Edition. September 2010 Regulatory Guidance

Residual Risk

The amount of assessed risk that remains after risk controls/barriers have been fully implemented to reduce and mitigate a risk. 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 Standards  

Residual Risk

Risk remaining after risk treatment.
  • Note 1 to entry: Residual risk can contain unidentified risk.
  • Note 2 to entry: Residual risk can also be known as “retained risk”.
Source: ISO/IEC 27000:2014, Information technology — Security techniques — Information security management systems — Overview and vocabulary, Third Edition, January 2014. Global Standards

Residual Risk

Risk (1.1) remaining after risk treatment (3.8.1).
  • NOTE 1 Residual risk can contain unidentified risk.
  • NOTE 2 Residual risk can also be known as “retained risk”.
Source: ISO Guide 73:2009(E/F), Risk Management – Vocabulary, First Edition, 2009. Global Standards  

Residual Risk

Risk that remains when a barrier, or combination of barriers, operates as intended. Source: OGP Report No. 415, Asset integrity – the key to managing major incident risks, International Association of Oil & Gas Producers, December 2008. Global Standards  

Residual Risk

The remaining risk after the security controls or countermeasures have been applied.

Source: ANSI/ISA–99.00.01–2007, Security for Industrial Automation and Control Systems, Part 1: Terminology, Concepts, and Models, 29 October 2007. National Standard
Resilience

Resilience

Definition(s)


Resilience

The ability to adapt to changing conditions and prepare for, withstand and rapidly recover from disruption.

Source: API RP 781 Security Plan Methodology for the Oil and Natural Gas Industries.1st Ed. September 2016. Global Standards

Resilience

The ability to adapt to changing conditions and prepare for, withstand, and rapidly recover from disruption. From: DHS Risk Lexicon. Source: NICCS™ Portal Cybersecurity Lexicon, National Initiative for Cybersecurity Careers and Studies (https://niccs.us-cert.gov/glossary) as of 11 November 2015, Global Standards

Resilience

Ability to adapt to changing conditions and prepare for, withstand, and rapidly recover from disruption.

Sample Usage: The county was able to recover quickly from the disaster because of the resilience of governmental support systems.

Extended Definition: ability of systems, infrastructures, government, business, communities, and individuals to resist, tolerate, absorb, recover from, prepare for, or adapt to an adverse occurrence that causes harm, destruction, or loss.

Annotation:

  1. According to the QHSR, ―Resilient individuals, families, and communities—and the systems that sustain them—are informed, trained, and materially and psychologically prepared to withstand disruption, absorb or tolerate disturbance, know their role in a crisis, adapt to changing conditions, and grow stronger over time.‖
  2. Resilience can reduce the consequences associated with an incident, event, or occurrence; resilience can also impact the likelihood of a significant incident, event, or occurrence happening at all.

Source: DHS Risk Lexicon, U.S. Department of Homeland Security, 2010 Edition. September 2010 Regulatory Guidance

Resilience

Adaptive capacity of an organization in a complex and changing environment.

Source: ISO Guide 73:2009(E/F), Risk Management – Vocabulary, First Edition, 2009. Global Standards

Resilience/Resiliency

Resilience/Resiliency

Definition(s)


Resilience/Resiliency

The ability to resist, absorb, recover from, or successfully adapt to adversity or a change in conditions. In the context of energy security, resilience is measured in terms of robustness, resourcefulness, and rapid recovery.

Source:API STANDARD 780, Security Risk Assessment Methodology for the Petroleum and Petrochemical Industries, First Edition, May 2013. Global Standards
Resilient Seal

Resilient Seal

Definition(s)


Resilient Seal

Seal or sealing system, which relies on entrapment of a seal ring within a section of the connection (e.g. in the thread-form, on a seal area, etc.) to achieve a seal. Source: API RP 5C5, Recommended Practice on Procedures for Testing Casing and Tubing Connections, Third Edition, July 2003 (Reaffirmed August 2010). Global Standards
Resistance

Resistance

Definition(s)


Resistance

Mechanical property of a component, a cross-section, or a member of the structure, e.g. bending resistance, local buckling resistance. Source: API Standard 2RD, Dynamic Risers for Floating Production Systems, Second Edition, September 2013. Global Standards Source: API RP 17G, Recommended Practice for Completion/Workover Risers, Second Edition, July 2006 (Reaffirmed April 2011). Global Standards  

Resistance

Capacity of a structure, a component or a cross-section of a component to withstand action effects without exceeding a limit state. NOTE This definition is at variance with that specified in ISO 19900:2002. Source: ISO 19901-7:2013, Petroleum and natural gas industries – Specific requirements for offshore structures – Part 7: Stationkeeping systems for floating offshore structures and mobile offshore units. Global Standards  

Resistance

capacity of a component, or a cross-section of a component, to withstand action effects without failure Source: ISO 19900:2013, Petroleum and natural gas industries – General requirements for offshore structures. Global Standards
Resource

Resource

Definition(s)


Resource

Commodity, service, workforce or asset that is sourced or supplied to meet the needs of activities to generate products. 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 Standards
Respond/Response

Respond/Response

Definition(s)


Respond/Response

The act of reacting to detected or actual security incidents either immediately following detection or post incident.

Source: API RP 781 Security Plan Methodology for the Oil and Natural Gas Industries.1st Ed. September 2016. Global Standards

Respond/Response

The act of reacting to detected or actual criminal activity either immediately following detection or post-incident.

Source:API STANDARD 780, Security Risk Assessment Methodology for the Petroleum and Petrochemical Industries, First Edition, May 2013. Global Standards
Response

Response

Definition(s)


Response

The activities that address the short-term, direct effects of an incident and may also support short-term. Source: NICCS™ Portal Cybersecurity Lexicon, National Initiative for Cybersecurity Careers and Studies (https://niccs.us-cert.gov/glossary) as of 11 November 2015, Global Standards  

Response

The activities that address the short-term, direct effects of an incident and may also support short-term recovery. Extended Definition: In the Workforce framework, cybersecurity work where a person: Responds to crisis or urgent situations within the pertinent domain to mitigate immediate and potential threats; uses mitigation, preparedness, and response and recovery approaches, as needed, to maximize survival of life, preservation of property, and information security. Investigates and analyzes all relevant response activities. From: Workforce Framework. Source: NICCS™ Portal Cybersecurity Lexicon, National Initiative for Cybersecurity Careers and Studies (https://niccs.us-cert.gov/glossary) as of 11 November 2015, Global Standards
Response Amplitude Operator (RAO)

Response Amplitude Operator (RAO)

Definition(s)


Response Amplitude Operator

Ratio of a vessel’s motion to the wave amplitude causing that motion and presented over a wide range of wave periods

Source: API Specification 16Q, Design, Selection, Operation, and Maintenance of Marine Drilling Riser Systems, Second Edition, April 2017. Global Standards

Response Amplitude Operator (RAO)

For regular waves, it is the ratio of a vessel's motion to the wave amplitude causing that motion and presented over a range of wave periods. Source: API RP 16Q, Recommended Practice for Design, Selection, Operation and Maintenance of Marine Drilling Riser Systems, First Edition, November 1993 (Reaffirmed August 2001). Global Standards  

Response Amplitude Operator (RAO)

Relationship between wave surface elevation amplitude at a reference location and the vessel response amplitude, and the phase lag between the two. Source: API Standard 2RD, Dynamic Risers for Floating Production Systems, Second Edition, September 2013. Global Standards

Response Amplitude Operator (RAO)

Relationship between wave surface elevation amplitude and the vessel response amplitude, and the phase lag between the two. Source: API RP 17G, Recommended Practice for Completion/Workover Risers, Second Edition, July 2006 (Reaffirmed April 2011). Global Standards  

Response Amplitude Operator (Regular Waves)

Ratio of a vessel's motion to the wave amplitude causing that motion and presented over a range of wave periods. Source: ISO 13624-1:2009, Petroleum and natural gas industries – Drilling and production equipment – Part 1:Design and operation of marine drilling riser equipment. Global Standards
Response History

Response History

Definition(s)


Expected loads and response history

Expected load and response history for a specified time period, taking into account the number of load cycles and the resulting load levels and response for each cycle. Source: Offshore Standard DNV-OS-C101, Design of Offshore Steel Structures, General (LRFD Method, Det Norske Veritas, April 2011. Global Standards  
Response Plan

Response Plan

Definition(s)


Response Plan

A set of predetermined and documented procedures to detect and respond to a cyber incident. Adapted 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 Standards
Response Spectrum

Response Spectrum

Definition(s)


Response Spectrum

Plot representing structural response in terms of absolute acceleration, pseudo velocity, or relative displacement values against a structural natural frequency or period. Source:API RP 2EQ, Seismic Design Procedures and Criteria for Offshore Structures, First Edition, November 2014. Global Standards
Response Time

Response Time

Definition(s)


Response Time

The time elapsed between activation of a function at any control panel and complete operation of the function. Source: API SPEC 16D, Specification for Control Systems for Drilling Well Control Equipment and Control Systems for Diverter Equipment, Upstream Segment, Second Edition, July 2004. Global Standards  

Response Time

Sum of the signal time and the shift time. Source: API SPEC 17F, Specification for Subsea Production Control Systems, Second Edition, December 2006 (Reaffirmed April 2011). Global Standards

Response Time

Response time is the sum of extraction time and detection time. Source: IMO MSC.1/Circ.1343, amendments to the International Aeronautical and Maritime Search and Rescue (IAMSAR) Manual, 24 May 2010, International Maritime Organization. Regulatory Guidance Source: IMO MSC.1/Circ.1370, Guidelines for the design, construction and testing of fixed hydrocarbon gas detection systems, 22 June 2010, International Maritime Organization. Regulatory Guidance
Responsibility

Responsibility

Definition(s)


Responsibility

A clearly described requirement of an individual's job. 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 Standards
Responsible Party

Responsible Party

Definition(s)


Responsible Party

Person, business, or entity that has been identified as owning the vessel or facility that caused the spill. NOTE The term does not imply criminal negligence. Source: API RP 98, Personal Protective Equipment Selection for Oil Spill Responders, First Edition, August 2013. Global Standards

Responsible Party

Plan―any submittal made in accordance with R.S. 30:29 and these rules for the evaluation or remediation of an affected tract as defined herein. Source: Natural Resources, Office of Conservation – General Operations, Louisiana Administrative Code, Title 43, Part XIX, March 2013. Regulations  

Responsible Party

The operator and others participating in activities covered by these regulations, without being a licensee or owner of an onshore facility. Source: Regulations relating to health, safety and the environment in the petroleum activities and at certain onshore facilities (the Framework Regulations), Norway, February 2010 (amended December 2011). Regulations  
Restoration Rate

Restoration Rate

Definition(s)


Restoration Rate

μc onditional probability per unit of time that the restoration of a failed item ends between t and t+dt, provided that it was not finished over [0, t] Note 1 to entry: The following relationship holds when the restoration rate is constant: MTTRes = 1/μ. Note 2 to entry: The “restoration” rate is in relationship with the restoration time. Similarly the “repairing” rate can be defined in relationship with the “overall repairing” time and the “active repair” rate in relationship with the “active repair” time. Note 3 to entry: The restoration rate has the same mathematical properties for the restoration as the failure rate for the failures. Source: ISO/TR 12489:2013(E) Reliability modelling and calculation of safety systems. Global Standards
Restoring Force

Restoring Force

Definition(s)


Restoring Force

Force exerted by a centralizer against the casing to keep it away from the wellbore wall. NOTE Restoring force values can vary based on installation methods. Source: API SPEC 10D, Specification for Bow-String Casing Centralizers Upstream Segment, Sixth Edition, March 2002 (Reaffirmed August 2010). Global Standards  
Restrained-end Testing

Restrained-end Testing

Definition(s)


Restrained-end Testing

Pressure-testing arrangement using a pipe-sealing device or mechanism such that internal pressure produces hoop and radial stresses only in the component wall. Source: ISO 14692-1:2017, Petroleum and natural gas industries — Glass-reinforced plastics (GRP) piping — Part 1: Vocabulary, symbols, applications and materials, Second Edition, August 2017. Global Standards