DH

DH

Definition(s)

DH

Diameter of pinhole.

Source: API Standard 2CCU, Offshore Cargo Carrying Units, First Edition, August 2017. Global Standards

DH

Direct hydraulic. Source: API SPEC 17F, Specification for Subsea Production Control Systems, Second Edition, December 2006 (Reaffirmed April 2011). Global Standards
DCV

DCV

Definition(s)

DCV

Directional control valve. Source: API SPEC 17F, Specification for Subsea Production Control Systems, Second Edition, December 2006 (Reaffirmed April 2011). Global Standards
DCS

DCS

Definition(s)

DCS

Distributed control system. Source: API SPEC 17F, Specification for Subsea Production Control Systems, Second Edition, December 2006 (Reaffirmed April 2011). Global Standards 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  

DCS

Drilling control system. Source: NORSOK D-001, Drilling facilities, Rev. 3, December 2012. Global Standards
CPS

CPS

Definition(s)

CPS

Combined power and signal. Source: API SPEC 17F, Specification for Subsea Production Control Systems, Second Edition, December 2006 (Reaffirmed April 2011). Global Standards
CIV

CIV

Definition(s)

CIV

Chemical injection valve. Source: API SPEC 17F, Specification for Subsea Production Control Systems, Second Edition, December 2006 (Reaffirmed April 2011). Global Standards
CIU

CIU

Definition(s)

CIU

Chemical injection unit. Source: API SPEC 17F, Specification for Subsea Production Control Systems, Second Edition, December 2006 (Reaffirmed April 2011). Global Standards
CISPR

CISPR

Definition(s)

CISPR

Comité International Spécial des Perturations Radioelectrique (International Special Committee on Radio-Interference). Source: API SPEC 17F, Specification for Subsea Production Control Systems, Second Edition, December 2006 (Reaffirmed April 2011). Global Standards
CB

CB

Definition(s)

CB

Centre of buoyancy. Source: API SPEC 17F, Specification for Subsea Production Control Systems, Second Edition, December 2006 (Reaffirmed April 2011). Global Standards
Sampling Facilities

Sampling Facilities

Definition(s)

Sampling Facilities

Sampling Facilities - refers to the means provided for sampling treated or untreated ballast water as needed in these Guidelines. Source: Resolution MEPC.140(54), Guidelines for approval and oversight of prototype ballast water treatment technology programmes (G10), 24 March 2006, International Maritime Organization. Regulatory Guidance  

Sampling Facilities

“Sampling Facilities” means the equipment installed to take the sample. Source: Resolution MEPC.140(54), Guidelines for approval and oversight of prototype ballast water treatment technology programmes (G10), 24 March 2006, International Maritime Organization. Regulatory Guidance  

Sampling Facilities

Sampling Facilities refers to the means provided for sampling treated or untreated ballast water as needed in these Guidelines and in the “Guidelines for ballast water sampling (G2)” developed by the Organization. Source: Resolution MEPC.174(58), revised Guidelines for approval of ballast water management systems (G8), 10 October 2008, International Maritime Organization. Regulatory Guidance
BER

BER

Definition(s)

BER

Bit error rate. Source: API SPEC 17F, Specification for Subsea Production Control Systems, Second Edition, December 2006 (Reaffirmed April 2011). Global Standards    
β

β

Definition(s)

β

Filtration ratio. Source: API SPEC 17F, Specification for Subsea Production Control Systems, Second Edition, December 2006 (Reaffirmed April 2011). Global Standards
Well Data

Well Data

Definition(s)

Well Data

Data provided from the downhole equipment for reservoir description, flow calculations and routine production monitoring. NOTE Typically, these include sensor readings and valve positions. Source: API SPEC 17F, Specification for Subsea Production Control Systems, Second Edition, December 2006 (Reaffirmed April 2011). Global Standards  
Underwater Safety Valve

Underwater Safety Valve

Definition(s)

Underwater Safety Valve

Safety valve assembly that is declared to be the USV and which will automatically close upon loss of power to that actuator. Source: API SPEC 17F, Specification for Subsea Production Control Systems, Second Edition, December 2006 (Reaffirmed April 2011). Global Standards    
Surface Safety Valve

Surface Safety Valve

Definition(s)

Surface Safety Valve

Safety device that is located in the production bore of the well tubing above the wellhead (platform well), or at the point of subsea well production embarkation onto a platform, and that will automatically close upon loss of hydraulic pressure. Source: API SPEC 17F, Specification for Subsea Production Control Systems, Second Edition, December 2006 (Reaffirmed April 2011). Global Standards
Subsea Production Control System

Subsea Production Control System

Definition(s)

Subsea Production Control System

Control system operating a subsea production system during production operations. Source: API SPEC 17F, Specification for Subsea Production Control Systems, Second Edition, December 2006 (Reaffirmed April 2011). Global Standards
Signal Time

Signal Time

Definition(s)

Signal Time

Period of time elapsed between the remote initiation of a control command and the initiation of a control function operation subsea (the commencement of the shift time). Source: API SPEC 17F, Specification for Subsea Production Control Systems, Second Edition, December 2006 (Reaffirmed April 2011). Global Standards
Shift Time

Shift Time

Definition(s)

Shift Time

Period of time elapsed between the arrival of a control signal at the subsea location (the completion of the signal time) and the completion of the control function operation. NOTE Of primary interest is the time to fully stroke, on a subsea tree, a master or wing valve that has been designated as the underwater safety valve. Source: API SPEC 17F, Specification for Subsea Production Control Systems, Second Edition, December 2006 (Reaffirmed April 2011). Global Standards
Monitoring Equipment

Monitoring Equipment

Definition(s)

Monitoring Equipment

Monitoring Equipment - refers to the equipment installed for assessment of the correct operation of the prototype ballast water treatment technology. Source: Resolution MEPC.140(54), Guidelines for approval and oversight of prototype ballast water treatment technology programmes (G10), 24 March 2006, International Maritime Organization. Regulatory Guidance  

Monitoring Equipment

Monitoring Equipment refers to the equipment installed for the assessment of the effective operation of the ballast water treatment equipment. Source: Resolution MEPC.174(58), revised Guidelines for approval of ballast water management systems (G8), 10 October 2008, International Maritime Organization. Regulatory Guidance
Control Equipment

Control Equipment

Definition(s)

Control Equipment

Control Equipment refers to the installed equipment required to operate and control the ballast water treatment equipment. Source: Resolution MEPC.174(58), revised Guidelines for approval of ballast water management systems (G8), 10 October 2008, International Maritime Organization. Regulatory Guidance  

Control Equipment

Class that includes distributed control systems, programmable logic controllers, SCADA systems, associated operator interface consoles, and field sensing and control devices used to manage and control the process.
  • NOTE: The term also includes field bus networks where control logic and algorithms are executed on intelligent electronic devices that coordinate actions with each other, as well as systems used to monitor the process and the systems used to maintain the process.
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

Control Equipment

Control Equipment - refers to the installed equipment required for proper functioning of the prototype ballast water treatment technology. Source: Resolution MEPC.140(54), Guidelines for approval and oversight of prototype ballast water treatment technology programmes (G10), 24 March 2006, International Maritime Organization. Regulatory Guidance

Ballast Water Management Plan

Ballast Water Management Plan

Definition(s)

Ballast Water Management Plan

Ballast Water Management Plan - is the document referred to in regulation B-1 of the Convention describing the ballast water management processes and procedures on board individual ships. Source: Resolution MEPC.140(54), Guidelines for approval and oversight of prototype ballast water treatment technology programmes (G10), 24 March 2006, International Maritime Organization. Regulatory Guidance 
Proof Pressure

Proof Pressure

Definition(s)

Proof Pressure

Maximum test pressure at a level greater than the design pressure. Source: API SPEC 17F, Specification for Subsea Production Control Systems, Second Edition, December 2006 (Reaffirmed April 2011). Global Standards  
Prototype Ballast Water Treatment Technology

Prototype Ballast Water Treatment Technology

Definition(s)

Prototype Ballast Water Treatment Technology

Prototype Ballast Water Treatment Technology Prototype Ballast Water Treatment Technology - means any integrated system of ballast water treatment equipment as under regulation D-4, participating in a programme for testing and evaluation with the potential of meeting or exceeding the ballast water performance standard in regulation D-2 including treatment equipment, all associated control equipment, monitoring equipment and sampling facilities. A prototype ballast water treatment technology may be a mechanical, physical, chemical, or biological unit process, either singularly or in combination that may or may not use Active Substances that remove, render harmless, or avoid the uptake or discharge of Harmful Aquatic Organisms and Pathogens within ballast water and sediments. Prototype ballast water treatment technologies may operate at the uptake or discharge of ballast water, during the voyage or in any combination of these phases. Source: Resolution MEPC.140(54), Guidelines for approval and oversight of prototype ballast water treatment technology programmes (G10), 24 March 2006, International Maritime Organization. Regulatory Guidance
Intelligent Well Control System

Intelligent Well Control System

Definition(s)

Intelligent Well Control System

Control system used to operate an intelligent well. Source: API SPEC 17F, Specification for Subsea Production Control Systems, Second Edition, December 2006 (Reaffirmed April 2011). Global Standards    
Intelligent Well

Intelligent Well

Definition(s)

Intelligent Well

Well that employs permanently installed downhole sensors and/or permanently installed downhole control devices that are operable from a surface facility. Source: API SPEC 17F, Specification for Subsea Production Control Systems, Second Edition, December 2006 (Reaffirmed April 2011). Global Standards    
Hydrostatic Test Pressure

Hydrostatic Test Pressure

Definition(s)

Hydrostatic Test Pressure

Maximum test pressure at a level greater than the design pressure (rated working pressure). Source: API SPEC 17F, Specification for Subsea Production Control Systems, Second Edition, December 2006 (Reaffirmed April 2011). Global Standards    
Expert Operation

Expert Operation

Definition(s)

Expert Operation

Operating the IWCS with other control commands or other methods than used for normal operation. NOTE Typically used by IWCS supplier or other skilled resource to read IWCS diagnostic data and make (engineering) adjustments to IWCS equipment. Source: API SPEC 17F, Specification for Subsea Production Control Systems, Second Edition, December 2006 (Reaffirmed April 2011). Global Standards    
Electrohydraulic Control

Electrohydraulic Control

Definition(s)

Electrohydraulic Control

Control method wherein communication signals are conducted to the subsea system and used to open or close electrically-controlled hydraulic control valves. NOTE Hydraulic fluid is locally sourced and acts on the associated subsea valve actuator. “Locally sourced” may mean locally stored pressurized fluid or fluid supplied by a hydraulic umbilical line. With electrohydraulic control systems, data telemetry (readback) is readily available at high speed. Multiplexing of the communication signals reduces the number of conductors in the umbilical. Source: API SPEC 17F, Specification for Subsea Production Control Systems, Second Edition, December 2006 (Reaffirmed April 2011). Global Standards    
Direct Hydraulic Control

Direct Hydraulic Control

Definition(s)

Direct Hydraulic Control

Control method wherein hydraulic pressure is applied through an umbilical line to act directly on a subsea valve actuator. NOTE Upon venting of the pressure at the surface, the control fluid is returned through the umbilical to the surface due to the action of the restoring spring in the valve actuator. Subsea functions may be ganged together to reduce the number of umbilical lines. Source: API SPEC 17F, Specification for Subsea Production Control Systems, Second Edition, December 2006 (Reaffirmed April 2011). Global Standards  
Diagnostic Data

Diagnostic Data

Definition(s)

Diagnostic Data

Data provided to monitor the condition of the downhole equipment. NOTE Can include the ability to make (engineering) adjustments. Source: API SPEC 17F, Specification for Subsea Production Control Systems, Second Edition, December 2006 (Reaffirmed April 2011). Global Standards  
Warships <Definition of warships>

Warships

Definition(s)

Warships <Definition of warships>

For the purpose of this Convention, 'warship' means a ship belonging to the armed forces of a State bearing the external marks distinguishing such ships of its nationality, under the command of an officer duly commissioned by the government of the State and whose name appears in the appropriate service list or its equivalent, and manned by a crew which is under regular armed forces discipline. Source: United Nations Convention on the Law of the Sea (UNCLOS), 1982. Legislation