Intermittent Service

Intermittent Service

Definition(s)


Intermittent Service

The condition of a piping system whereby it is not in continuous operating service, i.e. it operates at regular or irregular intervals rather than continuously.
  • NOTE: Occasional turnarounds or other infrequent maintenance outages in an otherwise continuous process service does not constitute intermittent 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
Injection Point

Injection Point

Definition(s)


Injection Point

Injection points are locations where water, steam, chemicals or process additives are introduced into a process stream at relatively low flow/volume rates as compared to the flow/volume rate of the parent stream.
  • NOTE: Corrosion inhibitors, neutralizers, process anti-foulants, de-salter demulsifiers, oxygen scavengers, caustic, and water washes are most often recognized as requiring special attention in designing the point of injection. Process additives, chemicals and water are injected into process streams in order to achieve specific process objectives. Injection points do not include locations where two process streams join (see 3.1.60, mixing points).
  • EXAMPLE: Chlorinating agents in reformers, water injection in overhead systems, polysulfide injection in catalytic cracking wet gas, antifoam injections, inhibitors, and neutralizers.
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
Industry-qualified UT angle beam examiner

Industry-qualified UT angle beam examiner

Definition(s)


Industry-qualified UT angle beam examiner

A person who possesses an ultrasonic angle beam qualification from API (e.g. API QUTE/QUSE Detection and Sizing Tests) or an equivalent qualification approved by the owner/user.
  • NOTE: Rules for equivalency are defined on the API ICP website.
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
Integrity Operating Window

Integrity Operating Window

Definition(s)


Integrity Operating Window

Established limits for process variables (parameters) that can affect the integrity of the equipment if the process operation deviates from the established limits for a predetermined amount of time. See 4.1.4.

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

IOW

Definition(s)


IOW

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

IOW

Established limits for process variables (parameters) that can affect the integrity of the equipment if the process operation deviates from the established limits for a predetermined amount of time. See 4.1.4.

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

Inspection Deferral

Definition(s)


Inspection Deferral

A documented work process using risk assessment to defer an inspection beyond its due date for a specific period of time. See 6.7.

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

Inspection Code

Definition(s)


Inspection Code

A reference to the API 510 code.

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

Inspection Code

Shortened title for this Code (API 570). 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
Industry-qualified Ultrasonic Angle Beam Examiner

Industry-qualified Ultrasonic Angle Beam Examiner

Definition(s)


Industry-qualified Ultrasonic Angle Beam Examiner

A person who possesses an ultrasonic (UT) angle beam qualification from API (e.g. API QUTE/QUSE Detection and Sizing Tests) or an equivalent qualification approved by the owner/user.
  • NOTE: Rules for equivalency are defined on the API ICP website.
Source: API 510, Pressure Vessel Inspection Code: In-service Inspection, Rating, Repair, and Alteration, Tenth Edition, May 2014, with Addendum May 2017. Global Standards
Intumescent

Intumescent

Definition(s)


Intumescent

Passive fire-protection coating which, in the presence of fire, expands to create an inert insulating “char” layer. 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
Intrados

Intrados

Definition(s)


Intrados

Interior curve of an elbow or torus. 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
Incendive Discharge

Incendive Discharge

Definition(s)


Incendive Discharge

Electrostatic spark discharge of sufficient energy to ignite a flammable atmosphere. 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
Impregnate

Impregnate

Definition(s)


Impregnate

Saturate the reinforcement with a resin. 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
Installation Supervisor

Installation Supervisor

Definition(s)


Installation Supervisor

Tradesman able to perform practical supervision of the installation and joining of composite piping. 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
Installation Inspector

Installation Inspector

Definition(s)


Installation Inspector

Person able to perform satisfactory and independent inspection of composite piping installations and installation work. 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
Installer

Installer

Definition(s)


Installer

Party which carries out all or part of the construction and commissioning of composite piping installations and installation work for a project. 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
Inspection Certificate 3.2

Inspection Certificate 3.2

Definition(s)


Inspection Certificate 3.2

A document prepared by both the manufacturer's authorized inspection representative, independent of the manufacturing department, and either the purchaser's authorized representative or the inspector designated by the official regulations and in which they declare that the products supplied are in compliance with the requirements of the order and in which tests results are supplied, see EN 10204 and ISO 10474.

Source: Offshore Gangways, DNVGL-ST-0358, DNV GL, September 2017. Global Standards

Inspection Certificate 3.1

Inspection Certificate 3.1

Definition(s)


Inspection Certificate 3.1

A document issued by the manufacturer which contains the results of all the required tests It shall certify that the tests have been carried out by the manufacturer on samples taken from the delivered products direct, see EN 10204 and ISO 10474.

Source: Offshore Gangways, DNVGL-ST-0358, DNV GL, September 2017. Global Standards
IPSec

IPSec

Definition(s)


IPSec

Internet protocol security. Source:  DNVGL-RP-G108, Cyber security in the oil and gas industry based on IEC 62443, DNV GL, September 2017. Global Standards
IPL

IPL

Definition(s)


IPL

Independent protection layers. Source:  DNVGL-RP-G108, Cyber security in the oil and gas industry based on IEC 62443, DNV GL, September 2017. Global Standards
Intrusion Detection System

Intrusion Detection System

Definition(s)


Intrusion Detection System

A system designed to detect the entry or attempted entry of a person or vehicle into an area.

Source: Canadian Standards Association, Z246.1-09, Security management for petroleum and natural gas industry systems, August 2009, Regional Standards
I0GP

I0GP

Definition(s)


I0GP

International Association of Oil & Gas Producers. Asociación Internacional de Productores de Petróleo y Gas.

Source: Resolución Número 40687 de 18 Jul 2017 Por la cual se establecen los criterios técnicos para proyectos de perforación exploratoria de hidrocarburos costa afuera en Colombia. Columbia Ministerio de Minas y Energia, Regulations
Integridad de pozo

Integridad de pozo

Definition(s)


Integridad de pozo

Aplicación de soluciones técnicas, operacionales y organizacionales para reducir el riesgo de liberación involuntaria de fluidos de formación y garantizar una condición mecánica óptima del pozo durante su ciclo de vida.

Source: Resolución Número 40687 de 18 Jul 2017 Por la cual se establecen los criterios técnicos para proyectos de perforación exploratoria de hidrocarburos costa afuera en Colombia. Columbia Ministerio de Minas y Energia, Regulations
Intermediate Stress Relief

Intermediate Stress Relief

Definition(s)


Intermediate Stress Relief

Activity carried out to reduce residual stresses and diffuse hydrogen from completed highly stressed weld joints so that the risk of cracking is minimized upon the weld joint cooling to ambient temperature.
  • NOTE: Intermediate stress relief (ISR) may be used to reduce the risk of decreasing the base material properties when multiple welding operations are performed on a component. For example, a flange may receive an ISR after the seal groove inlay, then receive the final PWHT after the flange has been circumferentially welded to its mating component.
Source: API STANDARD 16AR, Standard for Repair and Remanufacture of Drill-through Equipment, First Edition, April 2017. Global Standards
IoT

IoT

Definition(s)


IoT

Internet of Things .

Source: API RP 781 Security Plan Methodology for the Oil and Natural Gas Industries.1st Ed. September 2016. Global Standards
Internet of things (IoT)

Internet of things (IoT)

Definition(s)


Internet of things (IoT)

Means a peer-to-peer network of objects and things that can be sensed, controlled, and programmed, where everything is networked and capable of communicating to each other.

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

Imminent Threat Level

Definition(s)


Imminent Threat Level

An alert level which warns of a credible, specific, and impending terrorist threat. Source: API RP 781 Security Plan Methodology for the Oil and Natural Gas Industries.1st Ed. September 2016. Global Standards
IP address

IP address

Definition(s)


IP address

Address of a computer or device that is assigned for identification and communication using the Internet Protocol and other protocols.

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
Interface

Interface

Definition(s)


Interface

Relations between a modular drilling rig and various systems (such as safety, oil, gas, water, electricity, instrumentation, communication, structures, etc.) on the platform. Source: ISO 18647:2017, Petroleum and natural gas industries — Modular drilling rigs for offshore fixed platforms, First Edition, August 2017. Global Standards

Interface

Logical entry or exit point that provides access to the module for logical information flows.

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
Interception

Interception

Definition(s)


Interception

Capture and disclosure of message contents or use of traffic analysis to compromise the confidentiality of a communication system based on message destination or origin, frequency or length of transmission, and other communication attributes.

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
Insider

Insider

Definition(s)


Insider

Trusted person, employee, contractor, or supplier who has information that is not generally known to the public. Source:  DNVGL-RP-G108, Cyber security in the oil and gas industry based on IEC 62443, DNV GL, September 2017. Global Standards

Insider

“trusted” person, employee, contractor, or supplier who has information that is not generally known to the public (See “outsider”). 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