Vessel Material(s)

Vessel Material(s)

Definition(s)

Vessel Material(s)

Vessel material(s) are defined as material essential to the structural integrity of the vessel.

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

Vinyl Ester

Definition(s)

Vinyl Ester

Class of thermosetting resin containing esters of acrylic and/or methacrylic acids, many of which have been made from epoxy resin.
  • Note: 1 to entry: Cure is accomplished, as with unsaturated polyesters, by copolymerization with other vinyl monomers such as styrene.
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
VLAN

VLAN

Definition(s)

VLAN

Virtual local area network. Source:  DNVGL-RP-G108, Cyber security in the oil and gas industry based on IEC 62443, DNV GL, September 2017. Global Standards
VTP VLAN

VTP VLAN

Definition(s)

VTP VLAN

Trunking protocol.

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

Vendor

Vendor

Definition(s)

Vendor

In this context: vendor of safety and automation systems. Source:  DNVGL-RP-G108, Cyber security in the oil and gas industry based on IEC 62443, DNV GL, September 2017. Global Standards
Venteo

Venteo

Definition(s)

Venteo

Liberación intencional controlada de gas no quemado.

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
Vsoil

Vsoil

Definition(s)

Vsoil

Volume of the backfill soil that rests on the spudcan.

Source: ABS Guidance Notes on Geotechnical Performance of Spudcan Foundations, January 2017. Global Standards
VL0

VL0

Definition(s)

VL0

Maximum vertical foundation load during preloading.

Source: ABS Guidance Notes on Geotechnical Performance of Spudcan Foundations, January 2017. Global Standards
Vc

Vc

Definition(s)

Vc

Volume of the conical spudcan below mudline.

Source: ABS Guidance Notes on Geotechnical Performance of Spudcan Foundations, January 2017. Global Standards

Ventilation-controlled Fire

Ventilation-controlled Fire

Definition(s)

Ventilation-controlled Fire

Fire that is in shortage of air such that the available air—the ventilation—controls the heat release rate.

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

Virtual World

Definition(s)

Virtual World

Simulated environment accessed by multiple users through an online interface.
  • NOTE 1 The simulated environments are often interactive.
  • NOTE 2 The physical world in which people live, and the related characteristics, will be referred to as the “real world” to differentiate it from a virtual world.
Source: ISO/IEC 27032:2015, Information technology — Security techniques — Guidelines for cybersecurity, First Edition, July 2012. Global Standards
Virtual Currency

Virtual Currency

Definition(s)

Virtual Currency

Monetary virtual assets. Source: ISO/IEC 27032:2015, Information technology — Security techniques — Guidelines for cybersecurity, First Edition, July 2012. Global Standards
Virtual Asset

Virtual Asset

Definition(s)

Virtual Asset

Representation of an asset in the Cyberspace.
  • NOTE In this context, currency can be defined as either a medium of exchange or a property that has value in a specific environment, such as a video game or a financial trading simulation exercise.
Source: ISO/IEC 27032:2015, Information technology — Security techniques — Guidelines for cybersecurity, First Edition, July 2012. Global Standards
Vulnerability Assessment

Vulnerability Assessment

Definition(s)

Vulnerability Assessment

A product or process of identifying physical features or operational attributes that renders an entity, asset, system, network, or geographic area susceptible or exposed to hazards.

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

Vulnerability Assessment

Product or process of identifying physical features or operational attributes that renders an entity, asset, system, network, or geographic area susceptible or exposed to hazards.

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

Vulnerability Assessment

Product or process of identifying physical features or operational attributes that render an entity, asset, system, network, or geographic area susceptible or exposed to hazards. Sample Usage: The team conducted a vulnerability assessment on the ship to determine how it might be exploited or attacked by an adversary. Annotation: Vulnerability assessments can produce comparable estimates of vulnerabilities across a variety of hazards or assets, systems, or networks. Source: DHS Risk Lexicon, U.S. Department of Homeland Security, 2010 Edition. September 2010 Regulatory Guidance
Vulnerability (degree)

Vulnerability (degree)

Definition(s)

Vulnerability (degree)

Qualitative or quantitative expression of the level to which an entity, asset, system, network, or geographic area is susceptible to harm when it experiences a hazard Sample Usage: In developing the scenario, analysts sought to express the asset's vulnerability in the event of a particular type of attack. Annotation: In calculating risk of an intentional hazard, the common measurement of vulnerability is the likelihood that an attack is successful, given that it is attempted. Source: DHS Risk Lexicon, U.S. Department of Homeland Security, 2010 Edition. September 2010 Regulatory Guidance
Value of Statistical Life

Value of Statistical Life

Definition(s)

Value of Statistical Life

Amount people are willing to pay to reduce risk so that on average one less person is expected to die from the risk. Sample Usage: The analyst estimates the monetary value of the mortality risk reduction from the initiative by using the VSL estimate. Annotation:
  1. The VSL is not intended to value very large reductions in mortality risk or place a value on the lives of identified individuals. VSL measures the monetized value of small reductions in mortality risk for a large number of people. For example, a countermeasure that reduces the annual risk of death by one in a million for 20 million people will, on average, save 20 lives a year. If the VSL is estimated at $5 million, the value of this mortality risk reduction is $100 million (20 expected lives saved times $5 million per life).
  2. Most VSL estimates are based on studies of the wage compensation for occupational hazards or studies that elicit people’s willingness to pay for mortality risk reduction directly.
Source: DHS Risk Lexicon, U.S. Department of Homeland Security, 2010 Edition. September 2010 Regulatory Guidance
VSL

VSL

Definition(s)

VSL

Value of Statistical Life. Source: DHS Risk Lexicon, U.S. Department of Homeland Security, 2010 Edition. September 2010 Regulatory Guidance
Visual Inspection

Visual Inspection

Definition(s)

Visual Inspection

Visually examining for a variety of surface flaws, such as corrosion, contamination, surface finish, and surface discontinuities.

Source:API SPECIFICATION 19TT, Specification for Downhole Well Test Tools and Related Equipment, First Edition, October 2016. Global Standards

Visual Inspection

Inspection which identifies, without the use of access equipment or tools, those defects, such as missing bolts, which will be apparent to the eye. Source: IEC 60079-17:2013, Explosive atmospheres – Part 17: Electrical installations inspection and maintenance, Edition 5.0, November 2013. Global Standards
Verification Dossier

Verification Dossier

Definition(s)

Verification Dossier

Set of documents showing the compliance of electrical equipment and installations. Source: IEC 60079-14:2013, Explosive atmospheres – Part 14: Electrical installations design, selection and erection, Edition 5.0, November 2013. Global Standards
Vulnerability Assessment and Management

Vulnerability Assessment and Management

Definition(s)

Vulnerability Assessment and Management

In the NICE Workforce Framework, cybersecurity work where a person: Conducts assessments of threats and vulnerabilities, determines deviations from acceptable configurations, enterprise or local policy, assesses the level of risk, and develops and/or recommends appropriate mitigation countermeasures in operational and non-operational situations. From: NICE 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
Virus

Virus

Definition(s)

Virus

A computer program that can replicate itself, infect a computer without permission or knowledge of the user, and then spread or propagate to another computer. 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  

Virus

Self-replicating or self-reproducing program that spreads by inserting copies of itself into other executable code or documents.

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
Value Chain

Value Chain

Definition(s)

Value Chain

Interlinked activities of the company, suppliers, customers and other stakeholders that convert inputs into beneficial outputs (i.e. products). Mapping a company's value chain can support understanding of risks and help set boundaries when considering impacts of activities. For an oil and gas company, the value chain refers to the full lifecycle of its products, including the processes of extraction, production, refining, marketing, consumption and disposal/recycling. Stakeholders in the input side of the value chain include suppliers and contractors- the "supply chain". Stakeholders in the output side include the "customer chain", which may include resellers, retailers and consumers. 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
Vertical Contract Audit

Vertical Contract Audit

Definition(s)

Vertical Contract Audit

An IACS audit which assesses the correct application of the quality system through audit of the process for a specific contract. The IACS QSCS (Quality System Certification Scheme) audit team is responsible for carrying out these audits. Source: Rules for Classification – Offshore units, DNVGL-OU-0101, Offshore drilling and support units, DNV GL, July 2015. Global Standards
Volume

Volume

Definition(s)

Volume

The space occupied by an object. Source: IADC UBO / MPD Glossary, December 2011. Global Standards
Volatility

Volatility

Definition(s)

Volatility

Measure of how easily a liquid will vaporize. Source: IADC UBO / MPD Glossary, December 2011. Global Standards
Viscometer

Viscometer

Definition(s)

Viscometer

Instrument that measures the viscosity of a fluid. Source: IADC UBO / MPD Glossary, December 2011. Global Standards
Vibration

Vibration

Definition(s)

Vibration

In-line and transverse oscillation of the riser string as the result of the periodic shedding of vortices from sea currents.

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

Vibration

The maximum uplift force during spudcan extraction

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

Vibration

Three-dimensional motion a machine exhibits from its static state. Source: IADC UBO / MPD Glossary, December 2011. Global Standards
Vertical Inline Pumps

Vertical Inline Pumps

Definition(s)

Vertical Inline Pumps

Single-stage vertical pumps with top-mounted motors. Suction and discharge nozzles arranged so the pump cases can be conveniently fitted into and supported by the piping. Source: IADC UBO / MPD Glossary, December 2011. Global Standards
Vertical Centrifugal Pump

Vertical Centrifugal Pump

Definition(s)

Vertical Centrifugal Pump

Pump's rotating unit is mounted in a vertical position. Source: IADC UBO / MPD Glossary, December 2011. Global Standards
Vena Contracta

Vena Contracta

Definition(s)

Vena Contracta

Point of lowest pressure is just downstream of the actual orifice at a distance of about half the diameter of the orifice downstream. Source: IADC UBO / MPD Glossary, December 2011. Global Standards