Global Standards

Pull-in Head

Definition(s)

Pull-in head

End of pipeline acting as attachment point for the pull-in wire. Source: API RP 17A, Design and Operation of Subsea Production Systems—General Requirements and Recommendations, Fourth Edition, Reaffirmed 2011. Global Standards

Pull-in head

Device used for terminating the end of a flowline or umbilical so that it can be loaded/offloaded from a vessel and pulled along the seabed and/or through an I-tube or J-tube. Source: API RP 17A, Design and Operation of Subsea Production Systems—General Requirements and Recommendations, Fourth Edition, Reaffirmed 2011. Global Standards

Pull-in head

Device used during flexible pipe installation to connect the flexible pipe end fitting to a pull-in wire, consisting of structure that connects to end-fitting and a connection that interfaces with lifting equipment. Source: API RP 17L2, Recommended Practice for Flexible Pipe Ancillary Equipment, First Edition, March 2013. Global Standards

Pull-in heads

Pull-in heads typically consist of a flanged structure that bolts directly onto the flexible pipe end fitting, as shown in Figure 37. A pad-eye is usually welded to the other end and is used to connect to a pull-in wire. Some pull-in heads may incorporate vents to facilitate pressure testing. They are generally a nonstandard item, since they need to be dimensionally compatible with the particular end fitting being used. Thus, they are seldom re-used. Source: API RP 17L2, Recommended Practice for Flexible Pipe Ancillary Equipment, First Edition, March 2013. Global Standards

Process Valve

Definition(s)

Process valve

Any valve located downstream of the tree wing valves in the production flow path. Source: API RP 17A, Design and Operation of Subsea Production Systems—General Requirements and Recommendations, Fourth Edition, Reaffirmed 2011. Global Standards

Jumper

Definition(s)

Jumper

Short segment of flexible pipe with a connector half at either end. NOTE A jumper is commonly used to connect flowlines and/or subsea facilities together, e.g. a subsea flowline to a hard pipe riser installed on a production platform. Source: API RP 17A, Design and Operation of Subsea Production Systems—General Requirements and Recommendations, Fourth Edition, Reaffirmed 2011. Global Standards

Jumper

Short piece of flexible pipe. 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

Jumper

A segment of hose or cable used to make a connection such as a hose reel junction box to the control manifold. 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

Jumper

Short flexible pipe used in subsea and topside, static, or dynamic applications. Source: API SPEC 17J, Specification for Unbonded Flexible Pipe, Third Edition, July 2008. Global Standards

Flying Lead

Definition(s)

Flying lead

Unarmoured umbilical jumper with a termination plate at either end (incorporating connectors for the various lines) used to connect subsea facilities together. NOTE 1 A flying lead is commonly used to connect e.g. a subsea control module on a subsea tree to a subsea umbilical distribution unit. NOTE 2 This type of umbilical jumper is lightweight and hence can be picked up from a deployment basket on the seabed and manoeuvred into position using a free-flying ROV. Source: API RP 17A, Design and Operation of Subsea Production Systems—General Requirements and Recommendations, Fourth Edition, Reaffirmed 2011. Global Standards

Flowline

Definition(s)

Flowline

Piping or trough which directs drilling fluid from the rotary nipple to the surface drilling fluid system. Source: API RP 13C, Recommended Practice on Drilling Fluids Processing Systems Evaluation, Upstream Segment, Fourth Edition, December 2010. Global Standards

Flowline

Production/injection line, service line or pipeline through which fluid flows. NOTE In this part of ISO 13628, the term is used to describe solutions or circumstances of general nature related to a flowline. Source: API RP 17A, Design and Operation of Subsea Production Systems—General Requirements and Recommendations, Fourth Edition, Reaffirmed 2011. Global Standards

Flowline

Any pipeline connecting to the subsea tree assembly outboard the flowline connector or hub. Source: API SPEC 17D, Design and Operation of Subsea Production Systems—Subsea Wellhead and Tree Equipment, Upstream Segment, Second Edition May 2011 (Errata September 2011). Global Standards

Flowline

The piping which exits the bell nipple and conducts drilling fluid and cuttings to the shale shaker and drilling fluid pits. Source: API STD 53, Blowout Prevention Equipment Systems for Drilling Wells, Upstream Segment, Fourth Edition, November 2012. Global Standards

Flowline

“Flowline” means a pipeline that is used to transport fluids from a well to a production facility or vice versa, and includes intrafield export and all gathering lines (conduite d’écoulement). Source: Canada Oil and Gas Installations Regulations, SOR/96-111, Canada, current to May 1, 2014. Regulations Source: Canada Oil and Gas Installations Regulations, SOR/96-118, February 2013. Regulations Source: Nova Scotia Offshore Petroleum Installations Regulations, SOR/95-191, Canada, current to May 31, 2012. Regulations

First-end Connection

Definition(s)

First-end connection

Connection made at the initiation point of the flowline or umbilical installation process. Source: API RP 17A, Design and Operation of Subsea Production Systems—General Requirements and Recommendations, Fourth Edition, Reaffirmed 2011. Global Standards

Deep Water

Definition(s)

Deep Water

Water depth generally ranging from 610 m (2 000 ft) to 1 830 m (6 000 ft). NOTE Since the physical circumstances of any situation will change as a function of water depth, use of the term “deep water” implies that it may be necessary to consider design and/or technology alternatives. Source: API RP 17A, Design and Operation of Subsea Production Systems—General Requirements and Recommendations, Fourth Edition, Reaffirmed 2011. Global Standards

Deep Water

Water depth generally ranging from 610 m (2 000 ft) to 1 830 m (6 000 ft). Source: API SPEC 17E, Specification for Subsea Umbilicals, Upstream Segment, Fourth Edition, October 2010. Global Standards

Deep Water

Deep water is defined in the NORSOK D-010 as water depth in access of 600 m. Deep water may range from 600 m to 3000 m and ultra-deep water beyond this depth. Source: NORSOK D-001, Drilling facilities, Rev. 3, December 2012. Global Standards

Barrier

Definition(s)

Barrier

Envelope of one or several well barrier elements preventing fluids from flowing unintentionally from the formation into the wellbore, into another formation or to the environment.

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

Barrier

Functional grouping of safeguards or controls selected to prevent a major accident or limit the consequences

Note 1 to entry: Barriers can be subdivided into hardware barriers or human barriers and are supported by management system elements.
Note 2 to entry: Adapted from IOGP Report No. 415.

Source: ISO 17776:2016, Petroleum and natural gas industries — Offshore production installations — Major accident hazard management during the design of new installations, Second Edition, December 2016. Global Standards

Barriers

Obstacle to prevent flow whose performance can be verified.

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

Barrier

A risk control that seeks to prevent unintended events from occurring, or prevent escalation of events into incidents with harmful consequences. For process safety, further reference to barriers can be found in OGP Reports No. 415 and No. 456. 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

Barrier

Component or practice that contributes to the total system reliability by preventing formation fluid or gas flow. Source: API RP 96, Deepwater Well Design and Construction, First Edition, March 2013. Global Standards Source: API Bulletin 97, Well Construction Interface Document Guidelines, First Edition, December 2013. Global Standards

Barrier

In this RP, barriers are defined as components or practices that contribute to the total system reliability to prevent or stop formation fluid or gas flow. Source: API RP 96, Deepwater Well Design and Construction, First Edition, March 2013. Global Standards

Barriers

“Barrier” means any fluid, plug or seal that prevents gas or oil or any other fluid from flowing unintentionally from a well or from a formation into another formation (barrière). 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

Barrier

Barriers as mentioned in the first subsection, can consist of either physical or non-physical measures, or a combination. The requirement for independence as mentioned in the second subsection, means that it should not be possible for multiple important barriers to be impaired or malfunction simultaneously, e.g. as a result of a single fault or a single incident. Barriers can also be measures designed to prevent or limit the spread of acute pollution. Source: Guidelines Regarding the Management Regulations, Norway, updated December 2012. Regulatory Guidance

Barrier

Technical, human or organizational safeguards that are put in place to prevent, mitigate or control health, safety or environmental risks. 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

Barrier

Element forming part of a pressure-containing envelope which is designed to prevent unintentional flow of produced/injected fluids, particularly to the external environment. Source: API RP 17A, Design and Operation of Subsea Production Systems—General Requirements and Recommendations, Fourth Edition, Reaffirmed 2011. Global Standards

Barrier

One or several barrier elements that are designed to prevent unintended flow of formation fluid. Source: API RP 17G, Recommended Practice for Completion/Workover Risers, Second Edition, July 2006 (Reaffirmed April 2011). Global Standards

Barriers

The term barrier is defined as meaning any fluid or any plug or seal that prevents hydrocarbons or any other fluid from flowing unintentionally from a formation, into another formation, or unintentionally flowing from a well. 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

Barriers

Barrier means any fluid, plug or seal that prevents petroleum or any other fluid from flowing unintentionally from a well or from a formation into another formation. 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

Barriers

A functional grouping of safeguards, such as primary containment, process equipment, engineered systems, operational procedures, management system elements, or worker capabilities designed to prevent LOPC and other types of asset integrity or process safety events, and mitigate any potential consequences of such events. A set of barriers is also often referred to as a risk control system. Source: OGP Report No. 456, Process Safety – Recommended Practice on Key Performance Indicators, International Association of Oil & Gas Producers, November 2011. Global Standards

Barrier

Measure which reduces the probability of releasing a hazard’s potential for harm or which reduces its consequences. (Barriers are Controls or Defences.) The hierarchy of barriers is:

prevention,
detection,
control,
mitigation,
emergency response.

Other Related Terms and Definitions: ISO-17776 - Measure which reduces the probability of realizing a hazard’s potential for harm and which reduces its consequences. Source: International Association of Drilling Contractors, Appendix 2 to Health, Safety and Environment Case Guidelines for Offshore Drilling Contractors, Issue 3.3.2, February 2010. IADC Guidelines

Barrier

A functional grouping of safeguards and controls selected to prevent the realization of a hazard. Each barrier typically includes a mix of: plant (equipment), process (documented and ‘custom and practice’) and people (personal skills and their application). The selected combination of these ensures the barrier is suitable, sufficient and available to deliver its expected risk reduction. Source: OGP Report No. 415, Asset integrity – the key to managing major incident risks, International Association of Oil & Gas Producers, December 2008. Global Standards

Barrier

Measure which reduces the probability of realizing a hazard’s potential for harm and which reduces its consequence.

NOTE Barriers may be physical (material, protective devices, shields, segregation, etc.) or non-physical (procedures, inspection, training, drills, etc.)

Source: ISO 17776:2000, Petroleum and natural gas industries – Offshore production installations – Guidelines on tools and techniques for hazard identification and risk assessment. Global Standards

Barrier

A functional grouping of safeguards and controls selected to prevent realization of a hazard. Source: OGP Report No. 415, Asset integrity – the key to managing major incident risks, International Association of Oil & Gas Producers, December 2008. Global Standards

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

Required Thickness

Definition(s)

Required thickness

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

Repair Organization

Definition(s)

Repair Organization

Any of the following:

an owner/user of piping systems who repairs or alters his or her own equipment in accordance with API 570,
a contractor whose qualifications are acceptable to the owner/user of piping systems and who makes repairs or alterations in accordance with API 570,
an organization that is authorized by, acceptable to, or otherwise not prohibited by the jurisdiction and who makes repairs in accordance with 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

Repair Organization

Any one of the following that makes repairs in accordance with this inspection code:

the holder of a valid ASME Certificate of Authorization that authorizes the use of an appropriate ASME Code symbol stamp;
the holder of another recognized code of construction certificate that authorizes the use of an appropriate construction code symbol stamp;
the holder of a valid R-stamp issued by the National Board for repair of pressure vessels;
the holder of a valid VR-stamp issued by the National Board for repair and servicing of relief valves;
an owner or user of pressure vessels and/or relief valves who repairs his or her own equipment in accordance with this code;
a repair contractor whose qualifications are acceptable to the pressure vessel owner or user;
an individual or organization that is authorized by the legal jurisdiction to repair pressure vessels or service relief devices.

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

Repair Organization

Anyone of the following who makes repairs in accordance with the inspection code:

The holder of a valid ASME Certificate of Authorization that authorizes the use of an appropriate ASME Code symbol stamp (e.g. U-stamp).
The holder of a valid R-stamp issued by the National Board.
An owner or user of pressure vessels who repairs his or her own equipment.
A contractor whose qualifications are acceptable to the pressure-vessel owner or user.
An individual or organization that is authorized by the legal jurisdiction.

Source: API 510, Pressure Vessel Inspection Code: In-Service Inspection, Rating, Repair, and Alteration Downstream Segment, Ninth Edition, June 2006. Global Standards

RBI

Definition(s)

RBI

Risk-based inspection. 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: ISO 20815:2008, Petroleum, petrochemical and natural gas industries – Production assurance and reliability management. Global Standards

RBI

A risk assessment and risk management process that is focused on inspection planning for piping systems for loss of containment in processing facilities, which considers both the probability of failure and consequence of failure due to materials of construction deterioration. See 5.2. Source: API 510, Pressure Vessel Inspection Code: In-service Inspection, Rating, Repair, and Alteration, Tenth Edition, May 2014, with Addendum May 2017. Global Standards

Risk-based inspection (RBI)

A risk assessment and management process that is focused on inspection planning for loss of containment of pressurized equipment in processing facilities, due to material deterioration. These risks are managed primarily through inspection in order to influence the probability of failure. Source: API 510, Pressure Vessel Inspection Code: In-Service Inspection, Rating, Repair, and Alteration Downstream Segment, Ninth Edition, June 2006. Global Standards

RBI

A risk assessment and management process that considers both the probability of failure and consequence of failure due to material deterioration and that is focused on inspection planning for loss of containment of pressurized equipment in processing facilities due to material deterioration. These risks are managed primarily through inspection in order to influence the probability of failure but can also be managed through various other methods to control the probability and consequence of failure.

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

RBI

Risk based inspection. Source: Rules for Classification – Offshore units, DNVGL-OU-0101, Offshore drilling and support units, DNV GL, July 2015. Global Standards

Risk-based Inspection

Definition(s)

Risk-based Inspection

A risk assessment and risk management process that is focused on inspection planning for piping systems for loss of containment in processing facilities, which considers both the probability of failure and consequence of failure due to materials of construction deterioration. See 5.2. 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

Risk-based Inspection

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

Risk-based Inspection (RBI)

Risk-based Inspection

Inspection strategies developed from an evaluation of the risk associated with a platform or group of similar platforms with the intention of tailoring inspection level to risk magnitude and location. Source: API RP 2SIM, Structural Integrity Management of Fixed Offshore Structures, First Edition, November 2014. Global Standards

Section 9 Vessel

Definition(s)

Section 9 vessel

A pressure vessel which is exempted from the rules set forth in Section 6 of this document. Source: API 510, Pressure Vessel Inspection Code: In-Service Inspection, Rating, Repair, and Alteration Downstream Segment, Ninth Edition, June 2006. Global Standards

Strip Lining

Definition(s)

Strip Lining

Strips of metal plates that are welded to the inside of the vessel wall for the purpose of protecting the vessel construction material from interaction with process fluids. Normally the strips are of a more corrosion resistant or erosion resistant alloy than the vessel wall and provide additional corrosion/erosion resistance. This is similar to plate lining except narrower strips are used instead of larger plates.

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

Strip Lining

Strips of metal plates that are welded to the inside of the vessel wall. Normally the strips are of a more corrosion resistant or erosion resistant alloy than the vessel wall and provide additional corrosion/erosion resistance. This is similar to plate lining except strips are used instead of larger plates. Source: API 510, Pressure Vessel Inspection Code: In-Service Inspection, Rating, Repair, and Alteration Downstream Segment, Ninth Edition, June 2006. Global Standards

Temper Embrittlement

Definition(s)

Temper embrittlement

The reduction in toughness due to a metallurgical change that can occur in some low alloy steels, e.g. 2-1/4Cr-l Mo, as a result of long term exposure in the temperature range of about 650°F - 11 OO°F (345°C - 595°C). 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 510, Pressure Vessel Inspection Code: In-Service Inspection, Rating, Repair, and Alteration Downstream Segment, Ninth Edition, June 2006. Global Standards

Temporary Repairs

Definition(s)

Temporary Repairs

Repairs made to piping systems in order to restore sufficient integrity to continue safe operation until permanent repairs can be scheduled and accomplished within a time period acceptable to the inspector and/or piping engineer

NOTE: Injection fittings on valves to seal fugitive (LDAR) emissions from valve stem seal are not considered to be “temporary repairs” as described in 8.1.4.1 and 8.1.5 in this Code.

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

Temporary Repairs

Repairs made to pressure vessels to restore sufficient integrity to continue safe operation until permanent repairs are conducted. See 8.1.6.1.1.

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

Temporary Repairs

Repairs made to pressure vessels to restore sufficient integrity to continue safe operation until permanent repairs can be conducted. Source: API 510, Pressure Vessel Inspection Code: In-Service Inspection, Rating, Repair, and Alteration Downstream Segment, Ninth Edition, June 2006. Global Standards

Transition Temperature

Definition(s)

Transition Temperature

The temperature at which a material fracture mode changes from ductile to brittle. 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 510, Pressure Vessel Inspection Code: In-Service Inspection, Rating, Repair, and Alteration Downstream Segment, Ninth Edition, June 2006. Global Standards

Quality Assurance

Definition(s)

Quality Assurance

All planned, systematic, and preventative actions required to determine if materials, equipment, or services will meet specified requirements so that the piping will perform satisfactorily in-service. Quality assurance plans will specify the necessary quality control activities and examinations.

NOTE: The contents of a quality assurance inspection management system for piping systems are outlined in 4.3.1.

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

Quality Assurance

All planned, systematic, and preventative actions specified to determine if materials, equipment, or services will meet specified requirements so that equipment will perform satisfactorily in service. The minimum contents of a QA inspection manual for in-service inspection are outlined in 4.1.2.

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

Quality Assurance

All planned, systematic, and preventative actions required to determine if materials, equipment, or services will meet specified requirements so that equipment will perform satisfactorily in service. The contents of a quality assurance inspection manual are outlined in 4.2.1. Source: API 510, Pressure Vessel Inspection Code: In-Service Inspection, Rating, Repair, and Alteration Downstream Segment, Ninth Edition, June 2006. Global Standards

Quality assurance

Planned, systematic, and preventive actions that are required to ensure that materials, products, or services meet specified requirements. Source: API SPEC 17J, Specification for Unbonded Flexible Pipe, Third Edition, July 2008. Global Standards

Quality assurance

All activities and functions concerned with the attainment of quality including documentary evidence to confirm that such attainment is met. Source: Rules and Regulations for the Classification of Mobile Offshore Units, Part 4, Steel Unit Structures, June 2013, Lloyd’s Register, Global Standards

PT

Definition(s)

PT

Liquid-penetrant technique. 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

PT

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

PT

Liquid penetrant examination technique. Source: API 510, Pressure Vessel Inspection Code: In-Service Inspection, Rating, Repair, and Alteration Downstream Segment, Ninth Edition, June 2006. Global Standards

PT

Liquid penetrant inspection. Source: API RP 7G-2, Recommended Practice for Inspection and Classification of Used Drill Stem Elements, First Edition, August 2009. Global Standards

PT

Liquid penetrant testing. Source: API RP 8B, Recommended Practice for Procedures for Inspections, Maintenance, Repair and Remanufacture of Hoisting Equipment, Seventh Edition, March 2002 (Reaffirmed: August 2012). Global Standards Source: API SPEC 7-1, Specification for Rotary Drill Stem Elements, First Edition, March 2006 (Addendum April 2011). Global Standards

Progressive inspection

Definition(s)

Progressive inspection

An inspection whose scope (coverage, interval, technique, and so forth) is increased as a result of inspection findings. Source: API 510, Pressure Vessel Inspection Code: In-Service Inspection, Rating, Repair, and Alteration Downstream Segment, Ninth Edition, June 2006. Global Standards

Procedure

Definition(s)

Procedures

A document that specifies or describes how an activity is to be performed on a piping system, often a step-by-step description (e.g. temporary repair procedure, external inspection procedure, hot tap procedure, NDE procedure, etc).

NOTE: A procedure may include methods to be employed, equipment or materials to be used, qualifications of personnel involved, and sequence of work.

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

Procedures

A document that specifies or describes how an activity is to be performed. It may include methods to be employed, equipment or materials to be used, qualifications of personnel involved and sequence of work. 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 510, Pressure Vessel Inspection Code: In-Service Inspection, Rating, Repair, and Alteration Downstream Segment, Ninth Edition, June 2006. Global Standards

Procedures

Organization’s documented method for performing an activity under controlled conditions to achieve conformity to specified requirements.

NOTE: This definition was previously identified as a “control feature” in earlier editions of this specification.

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 Standards

Procedure

A documented sequential description of the requirements to successfully accomplish a designated task or activity. 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

Procedure

Procedure as mentioned in the first subsection, means a specified way of conducting an activity or a process, cf. Chapter 3.4.5 of NS-EN ISO 9000. Source: Guidelines Regarding the Activities Regulations, Norway, updated December 2012. Regulatory Guidance

Procedure

Procedure as mentioned in the first subsection means a specified way of conducting an activity or a process. Source: Guidelines Regarding the Technical and Operational Regulations, Norway, updated December 2012. Regulatory Guidance

Procedure

Procedure, as mentioned, means a specified way of conducting an activity or a process. Source: Guidance Notes on Petroleum and Natural Gas (Safety in Offshore Operations) Rules, 2008, Oil Industry Safety Directorate (India), 2012. Regulatory Guidance

Procedure

Series of steps to be carried out in a logical order for a defined operation or in a given situation. Source: ISO 17776:2000, Petroleum and natural gas industries – Offshore production installations – Guidelines on tools and techniques for hazard identification and risk assessment. Global Standards

Procedure

A documented series of steps to be carried out in a logical order for a defined operation or in a given situation. 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 Standards

Pressure Vessel Engineer

Definition(s)

Pressure vessel engineer

A person acceptable to the owner/user who is knowledgeable and experienced in the engineering disciplines associated with evaluating mechanical and material characteristics that affect the integrity and reliability of pressure vessels. The pressure vessel engineer, by consulting with appropriate specialists, should be regarded as a composite of all entities needed to properly assess the technical requirements. Wherever the term “engineer” is used in this code, it refers to a pressure vessel engineer.

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

Pressure vessel engineer

A person acceptable to the owner/user who is knowledgeable and experienced in the engineering disciplines associated with evaluating mechanical and material characteristics which affect the integrity and reliability of pressure vessels. The pressure vessel engineer, by consulting with appropriate specialists, should be regarded as a composite of all entities needed to properly assess the technical requirements. Wherever the term "engineer" is used in this code, it refers to a pressure vessel engineer. Source: API 510, Pressure Vessel Inspection Code: In-Service Inspection, Rating, Repair, and Alteration Downstream Segment, Ninth Edition, June 2006. Global Standards

Pressure Vessel

Definition(s)

Pressure Vessel

A container designed to withstand internal or external pressure. This pressure may be imposed by an external source, by the application of heat from a direct or indirect source, or by any combination thereof. This definition includes heat exchangers, air coolers, columns, towers, unfired steam generators (boilers), and other vapor generating vessels that use heat from the operation of a processing system or other indirect heat source. (Specific limits and exemptions of equipment covered by this inspection code are provided in Section 1 and Annex A.). Source: API 510, Pressure Vessel Inspection Code: In-service Inspection, Rating, Repair, and Alteration, Tenth Edition, May 2014, with Addendum May 2017. Global Standards

Pressure Vessel

Tank or vessel used for an integrated operation in petrochemical facilities, refineries, gas plants, oil and gas production facilities, and other facilities.

NOTE: 1 See storage tank (3.1.79).
NOTE: 2 A process tank or vessel used for an integrated operation can involve, but is not limited to, preparation, separation, reaction, surge control, blending, purification, change in state, energy content, or composition of a material.

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

Pressure Vessel

A container designed to withstand internal or external pressure. This pressure may be imposed by an external source, by the application of heat from a direct or indirect source, or by any combination thereof. This definition includes heat exchangers, air-coolers, unfired steam generators and other vapor generating vessels which use heat from the operation of a processing system or other indirect heat source. (Specific limits and exemptions of equipment covered by this inspection code are given in Section 1 and Appendix A.) Source: API 510, Pressure Vessel Inspection Code: In-Service Inspection, Rating, Repair, and Alteration Downstream Segment, Ninth Edition, June 2006. Global Standards

Pressure Vessel

Vessel in a consistometer into which the slurry container is placed for the thickening-time test. Source: API RP 10B-2, Recommended Practice for Testing Well Cements, First Edition, July 2005 (Reaffirmed: July 2010). Global Standards

Pressure Vessel

For BOP control systems, a pressure vessel is a container for the containment of internal fluid pressure. 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

Pressure Vessel

“Pressure vessel” means a closed container capable of withstanding internal or external pressures, or both, greater than one atmosphere (appareil sous pression). 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. Regulations

Pressure Vessel

A container, including cylinders, used for the storage or accumulation of any gas or liquid under pressure and as defined in the Unfired Pressure Vessel Safety Orders with the following exceptions:

Those exceptions defined in Section 451 of the Unfired Pressure Vessel Safety Orders.
Pressure vessels constructed entirely of pipe and fittings conforming to and in service as prescribed in the applicable ANSI code.
High and low pressure gas holder covered by General Order No. 94-B of the Public Utility Commission of the State of California with revised Section 4a, effective November 12, 1970.

This definition is not intended to include boilers as defined in the Boiler and Fired Pressure Vessel Safety Orders, and pressure chambers that are integral parts of such devices as pumps, motors, engines, clothes presses, flatwork ironers, tire molds, etc., where the pressure-containing part is subjected to severe mechanical stresses. Source: Petroleum Safety Orders--Drilling and Production, Definitions, California Code of Regulations, 8 CCR § 6505, December 2012. Regulations

Pressure Vessel

A tank with design gas or vapour pressure exceeding 0.7 bar. Source: Rules for Classification – Offshore units, DNVGL-OU-0101, Offshore drilling and support units, DNV GL, July 2015. Global Standards

Pressure Vessel

"Pressure-vessel" means a storage tank or vessel which has been designed to operate at pressures above 15 psi. Source: State of Wyoming Occupational Safety and Health Rules and Regulations for Oil and Gas Well Drilling, Revised January 8, 2013. Regulations

Pressure Boundary

Definition(s)

Pressure Boundary

The portion of the piping that contains the pressure retaining piping elements joined or assembled into pressure tight fluid-containing piping systems. Pressure boundary components include pipe, tubing, fittings, flanges, gaskets, bolting, valves, and other devices such as expansion joints and flexible joints.

NOTE: Also see non-pressure boundary definition.

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

Pressure Boundary

That portion of the pressure vessel that contains the pressure retaining elements joined or assembled into a pressure tight, fluid-containing vessel (e.g. typically the shell, heads, and nozzles but excluding items such as supports, skirts, clips, etc. that do not retain pressure). Source: API 510, Pressure Vessel Inspection Code: In-service Inspection, Rating, Repair, and Alteration, Tenth Edition, May 2014, with Addendum May 2017. Global Standards

Pressure Boundary

The portion of the vessel that contains the pressure e.g. typically the shell, heads and nozzles. Source: API 510, Pressure Vessel Inspection Code: In-Service Inspection, Rating, Repair, and Alteration Downstream Segment, Ninth Edition, June 2006. Global Standards

Plate Lining

Definition(s)

Plate lining

Metal plates that are welded to the inside of the pressure vessel wall. Normally, plates are of a more corrosion resistant or erosion resistant alloy than the vessel wall and provide additional corrosion/erosion resistance. In some instances, plates of a material of construction similar to the vessel wall are used for specific operating periods where corrosion and/or erosion rates are predictable. Source: API 510, Pressure Vessel Inspection Code: In-Service Inspection, Rating, Repair, and Alteration Downstream Segment, Ninth Edition, June 2006. Global Standards

User

Definition(s)

Owner/user

An owner or user of pressure vessels who exercises control over the operation, engineering, inspection, repair, alteration, pressure testing and rerating of those pressure vessels. Source: API 510, Pressure Vessel Inspection Code: In-Service Inspection, Rating, Repair, and Alteration Downstream Segment, Ninth Edition, June 2006. Global Standards

User

Company or person who employs the equipment. Source: API RP 7G-2, Recommended Practice for Inspection and Classification of Used Drill Stem Elements, First Edition, August 2009. Global Standards

User

Individual or company that uses equipment or material, or implements standards. Source: API RP 8B, Recommended Practice for Procedures for Inspections, Maintenance, Repair and Remanufacture of Hoisting Equipment, Seventh Edition, March 2002 (Reaffirmed: August 2012). Global Standards

User or user/purchaser

The company, organization or entity that purchases, installs, and/or uses equipment. Source: API TR 1PER15K-1, Protocol for Verification and Validation of High-pressure High-temperature Equipment, First Edition, March 2013. Global Standards

User and/or operator

Organization that uses and/or operates the C/WO riser system. Source: API RP 17G, Recommended Practice for Completion/Workover Risers, Second Edition, July 2006 (Reaffirmed April 2011). Global Standards

Users

Users as mentioned in the second subsection, can be own personnel or external suppliers of services and equipment. Source: Guidelines Regarding the Management Regulations, Norway, updated December 2012. Regulatory Guidance

User

User of the equipment. Source: IEC 60079-19:2015, Explosive atmospheres – Part 19: Equipment repair, overhaul and reclamation, Edition 3.1, March 2015. Global Standards

User

Anyone interacting with the system, including its operators and maintainers. Source: IMO MSC.1/Circ.1512, Guideline on Software Quality Assurance and Human-Centred Design for e-navigation, 8 June 2015, International Maritime Organization. Regulatory Guidance

On-stream Inspection

Definition(s)

On-stream inspection

An inspection performed from the outside of a pressure vessel while it is on-stream using NDE procedures to establish the suitability of the pressure boundary for continued operation. 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 510, Pressure Vessel Inspection Code: In-Service Inspection, Rating, Repair, and Alteration Downstream Segment, Ninth Edition, June 2006. Global Standards

On-stream inspection

An inspection performed from the outside of piping systems while they are on-stream using NDE procedures toestablish the suitability of the pressure boundary for continued operation (see 5.5.2). 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

On-stream inspection

Evaluation performed from the outside of a pressure vessel using NDE procedures to establish the suitability of the vessel for continued operation. The vessel may, or may not, be in operation while the inspection is carried out. Source: API 510, Pressure Vessel Inspection Code: In-Service Inspection, Rating, Repair, and Alteration Downstream Segment, Ninth Edition, June 2006. Global Standards

Non-pressure Boundary

Definition(s)

Non-pressure boundary

The portion of the vessel that does not contain the process pressure, e.g. trays, baffles, nonstiffening insulation support rings, etc. Source: API 510, Pressure Vessel Inspection Code: In-Service Inspection, Rating, Repair, and Alteration Downstream Segment, Ninth Edition, June 2006. Global Standards

MT

Definition(s)

MT

Magnetic particle test.

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

MT

Magnetic particle test. Source: API Specification 16A, Specification for Drill-through Equipment, Fourth Edition, April 2017. Global Standards

MT

Magnetic particle examination technique. Source: API 510, Pressure Vessel Inspection Code: In-Service Inspection, Rating, Repair, and Alteration Downstream Segment, Ninth Edition, June 2006. Global Standards

MT

Material test coupon. Source: API RP 5C5, Recommended Practice on Procedures for Testing Casing and Tubing Connections, Third Edition, July 2003 (Reaffirmed August 2010). Global Standards

MT

Magnetic-particle inspection. Source: API RP 7G-2, Recommended Practice for Inspection and Classification of Used Drill Stem Elements, First Edition, August 2009. Global Standards Source: API SPEC 5CRA, Specification for Corrosion Resistant Alloy Seamless Tubes for Use as Casing, Tubing and Coupling Stock, Upstream Segment, First Edition, February 2010 (Errata August 2011). Global Standards

MT

Magnetic particle testing. Source: API RP 8B, Recommended Practice for Procedures for Inspections, Maintenance, Repair and Remanufacture of Hoisting Equipment, Seventh Edition, March 2002 (Reaffirmed: August 2012). Global Standards Source: API SPEC 7-1, Specification for Rotary Drill Stem Elements, First Edition, March 2006 (Addendum April 2011). Global Standards

MT

Macaroni tubing style of thread design. Source: API SPEC 7-1, Specification for Rotary Drill Stem Elements, First Edition, March 2006 (Addendum April 2011). Global Standards

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Required thickness

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RBI

RBI

Risk-based inspection (RBI)

RBI

RBI

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Risk-based Inspection

Risk-based Inspection

Risk-based Inspection (RBI)

Risk-based Inspection

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Section 9 vessel

Definition(s)

Strip Lining

Strip Lining

Definition(s)

Temper embrittlement

Definition(s)