Rope Modulus

Rope Modulus

Definition(s)

Rope Modulus

The ratio of rope stress to strain/the ratio of rope tension to elongation.
  • NOTE: Stiffness is often preferred as it is difficult to determine the area for a synthetic rope. Often the terms dynamic modulus/stiffness and static modulus/stiffness are used. Dynamic refers to modulus/stiffness values obtained when the rope is loaded quickly (seconds to minutes) where static refers to modulus/stiffness values obtained when the rope is loaded slowly (hours to days).
Source: API RP 2SM Design, Manufacture, Installation, and Maintenance of Synthetic Fiber Ropes for Offshore Mooring, Second Edition, July 2014. Global Standards
RTP

RTP

Definition(s)

RTP

Reinforced thermoset plastic. 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
Retired from service

Retired from service

Definition(s)

Retired from service

Piping systems that are no longer going to be used for any process service.

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
RCD Sealing Element (Packer)

RCD Sealing Element (Packer)

Definition(s)

RCD Sealing Element (Packer)

The elastomeric sealing element installed inside the rotating control device to seal around the drill string.

Source: ABS Guide for Classification and Certification of Managed Pressure Drilling Systems, September 2017. Global Standards
Return Flow Control

Return Flow Control

Definition(s)

Return Flow Control

MPD technique which diverts returned fluid flow away from the rig floor in order to handle any formation fluid influx, thereby avoiding closing of a BOP, with the subsequent well control steps that are customarily required. RFC is drilling with a closed annulus return system (RCD) immediately under the rig floor for complete assurance of the total diversion of any rapidly developing kick.

Source: ABS Guide for Classification and Certification of Managed Pressure Drilling Systems, September 2017. Global Standards
RFC

RFC

Definition(s)

RFC

Return Flow Control. Source: ABS Guide for Classification and Certification of Managed Pressure Drilling Systems, September 2017. Global Standards  

RFC

MPD technique which diverts returned fluid flow away from the rig floor in order to handle any formation fluid influx, thereby avoiding closing of a BOP, with the subsequent well control steps that are customarily required. RFC is drilling with a closed annulus return system (RCD) immediately under the rig floor for complete assurance of the total diversion of any rapidly developing kick. Source: ABS Guide for Classification and Certification of Managed Pressure Drilling Systems, September 2017. Global Standards
Rubber Sealed Key Lock Joint

Rubber Sealed Key Lock Joint

Definition(s)

Rubber Sealed Key Lock Joint

Joint connection made up of a spigot end and a socket end with “O” or lip-sealing rings and some axial restraining device capable of resisting the full thrust from internal pressure. 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
Rubber Seal Lock Joint

Rubber Seal Lock Joint

Definition(s)

Rubber Seal Lock Joint

Joint connection made up of a spigot end and a socket end with “O” or lip-sealing rings and some axial restraining device capable of resisting the full thrust from internal pressure. 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
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
Roving

Roving

Definition(s)

Roving

Number of strands, tows or ends collected into a parallel bundle with little or no twist. 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
RTR Plastic

RTR Plastic

Definition(s)

RTR Plastic

Polymeric resin-based composite that is reinforced with glass fibre. 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
Reinforced Thermosetting Resin Plastic

Reinforced Thermosetting Resin Plastic

Definition(s)

Reinforced Thermosetting Resin Plastic

Polymeric resin-based composite that is reinforced with glass fibre. Note: 1 to entry: The predominant glass fibre is E-glass (3.2.22). Note: 2 to entry: ISO 14692 (all parts) is restricted to the use of thermosetting resins (3.2.116).

Note: 3 to entry: GRE, GRUP and GRVE are types of GRP.

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
Reinforced Plastic

Reinforced Plastic

Definition(s)

Reinforced Plastic

Polymeric resin-based composite that is reinforced with glass fibre. 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
Reinforcement

Reinforcement

Definition(s)

Reinforcement

Strong material embedded into a matrix to improve its mechanical properties.
  • Note: 1 to entry: Reinforcements are usually long fibres, whiskers, particulates, etc. The term is not to be used synonymously with filler.
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
Reducer

Reducer

Definition(s)

Reducer

Component that allows pipes of different sizes to be connected. 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
Rated Temperature

Rated Temperature

Definition(s)

Rated Temperature

Maximum design temperature at the rated pressure (3.2.99) determined in accordance with ISO 14692-2 and ISO 14692-3. 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
R-ratio

R-ratio

Definition(s)

R-ratio

ratio of the hoop stress to the axial stress in a particular test condition
  • EXAMPLE: In a hydrostatic test condition where a) the test sample is unrestrained, b) the hoop stress component is represented by half the pressure times diameter divided by wall thickness (PD/2t) and c) the axial stress component is represented by one-fourth the pressure times diameter divided by wall thickness (PD/4t), the R-ratio would be exactly 2,0. In the same test condition, if the axial stress component is represented by force over area (F/A) instead of PD/4t, the R-ratio will most likely be slightly higher than 2,0.
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
Redundancy Design Intent

Redundancy Design Intent

Definition(s)

Redundancy Design Intent

High level description of systems and components distribution into redundant groups (e.g. narrative description of both the normal operation mode and the failed operation mode). Source: Offshore Gangways, DNVGL-ST-0358, DNV GL, September 2017. Global Standards
RBAC

RBAC

Definition(s)

RBAC

Role-based access control. Source:  DNVGL-RP-G108, Cyber security in the oil and gas industry based on IEC 62443, DNV GL, September 2017. Global Standards
RCR

RCR

Definition(s)

RCR

Remote control room. Source:  DNVGL-RP-G108, Cyber security in the oil and gas industry based on IEC 62443, DNV GL, September 2017. Global Standards
RTO

RTO

Definition(s)

RTO

Recovery time objective. Source:  DNVGL-RP-G108, Cyber security in the oil and gas industry based on IEC 62443, DNV GL, September 2017. Global Standards
RPO

RPO

Definition(s)

RPO

Recovery point objective. Source:  DNVGL-RP-G108, Cyber security in the oil and gas industry based on IEC 62443, DNV GL, September 2017. Global Standards
Remanufacturer

Remanufacturer

Definition(s)

Remanufacturer

Organization that performs the repair or remanufacture work.

Source: API STANDARD 16AR, Standard for Repair and Remanufacture of Drill-through Equipment, First Edition, April 2017. Global Standards
Remanufacture Specification Level

Remanufacture Specification Level

Definition(s)

Remanufacture Specification Level

Level of traceability and/or conformance of parts or assemblies to API 16A.

Source: API STANDARD 16AR, Standard for Repair and Remanufacture of Drill-through Equipment, First Edition, April 2017. Global Standards
Restricted Areas

Restricted Areas

Definition(s)

Restricted Areas

Locations that require limited access and a higher degree of security protection in accordance with the security plan. The entire facility may be designated the restricted area, as long as the entire facility is provided the appropriate level of security. Source: API RP 781 Security Plan Methodology for the Oil and Natural Gas Industries.1st Ed. September 2016. Global Standards  

Restricted Areas

An area containing systems or assets that, if compromised, would have a major adverse impact on people, the environment, assets, and economic stability.
  • Note: Restricted areas include control centre operations, security departments, and certain information technology areas.
Source: Canadian Standards Association, Z246.1-09, Security management for petroleum and natural gas industry systems, August 2009, Regional Standards
Router

Router

Definition(s)

Router

Gateway between two networks at OSI layer 3 and that relays and directs data packets through that internetwork. The most common form of router passes Internet Protocol (IP) packets [11]. 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
Role-based Access Control

Role-based Access Control

Definition(s)

Role-based Access Control

Form of identity-based access control where the system entities that are identified and controlled are functional positions in an organization or process [11]. 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
Risk Mitigation Controls

Risk Mitigation Controls

Definition(s)

Risk Mitigation Controls

Combination of countermeasures and business continuity plans.

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
Repudiation

Repudiation

Definition(s)

Repudiation

Denial by one of the entities involved in a communication of having participated in all or part of the communication.

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
Remote Client

Remote Client

Definition(s)

Remote Client

Asset outside the control network that is temporarily or permanently connected to a host inside the control network via a communication link in order to directly or indirectly access parts of the control equipment on the control network.

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