Robustness

Robustness

Definition(s)

Robustness

The ability of a structure to tolerate damage without failure. Source: API RP 2SIM, Structural Integrity Management of Fixed Offshore Structures, First Edition, November 2014. Global Standards

Robustness

Ability of a structure to withstand accidental and abnormal events without being damaged to an extent disproportionate to the cause Source: ISO 19900:2013, Petroleum and natural gas industries – General requirements for offshore structures. Global Standards
Reference Period

Reference Period

Definition(s)

Reference Period

period of time used as the basis for determining values of basic variables. Source: ISO 19900:2013, Petroleum and natural gas industries – General requirements for offshore structures. Global Standards
Offshore Structure

Offshore Structure

Definition(s)

Offshore Structure

structure used for the development and production of offshore petroleum and natural gas fields in offshore areas Source: ISO 19900:2013, Petroleum and natural gas industries – General requirements for offshore structures. Global Standards
Normal Conditions

Normal Conditions

Definition(s)

Normal Conditions

permanent, variable and environmental actions associated with operating conditions of the platform Note 1 to entry: Normal conditions are sometimes referred to as persistent conditions. Source: ISO 19900:2013, Petroleum and natural gas industries – General requirements for offshore structures. Global Standards
Fixed Structure

Fixed Structure

Definition(s)

Fixed Structure

structure that is bottom founded and transfers most of the actions on it to the seabed. Source: ISO 19900:2013, Petroleum and natural gas industries – General requirements for offshore structures. Global Standards
Durability

Durability

Definition(s)

Durability

ability of a structure or structural component to maintain its function throughout its design service life Source: ISO 19900:2013, Petroleum and natural gas industries – General requirements for offshore structures. Global Standards
Compliant Structure

Compliant Structure

Definition(s)

Compliant Structure

structure that is sufficiently flexible that applied lateral dynamic actions are substantially balanced by inertial reactions Source: ISO 19900:2013, Petroleum and natural gas industries – General requirements for offshore structures. Global Standards
Appurtenance

Appurtenance

Definition(s)

Appurtenance

part of the structure that is installed to assist installation, to provide access or protection. Source: ISO 19900:2013, Petroleum and natural gas industries – General requirements for offshore structures. Global Standards
Air Gap

Air Gap

Definition(s)

Air Gap

To physically separate or isolate a system from other systems or networks (verb). Extended Definition: The physical separation or isolation of a system from other systems or networks (noun). 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

Air Gap

The clearance between the highest water surface that occurs during the extreme metocean conditions and the underside of the cellar deck. Source: API RP 2SIM, Structural Integrity Management of Fixed Offshore Structures, First Edition, November 2014. Global Standards

Air Gap

Clearance between the highest water or ice surface that occurs during the extreme environmental conditions and the lowest exposed part not designed to withstand wave or ice. impingement Source: ISO 19900:2013, Petroleum and natural gas industries – General requirements for offshore structures. Global Standards

Abnormal Value

Abnormal Value

Definition(s)

Abnormal Value

Design value of a parameter of abnormal severity used in accidental limit state checks in which a structure is intended not to suffer complete loss of integrity.
  • NOTE: Abnormal events have probabilities of the order of 10−3 to 10−4 per year. In the limit state checks, some or all of the partial factors are set to 1.0.
Source: API RP 2MET, Derivation of Metocean Design and Operating Conditions, First Edition, November 2014. Global Standards

Abnormal Value

Design value of a parameter of abnormal severity used in accidental limit state checks in which a structure is intended not to suffer complete loss of integrity.
  • Note: 1 to entry: Abnormal events are typically accidental and environmental (including seismic) events having probabilities of exceedance of the order of 10−3 to 10−4 per annum.
Source: ISO 19900:2013, Petroleum and natural gas industries – General requirements for offshore structures. Global Standards
Audit Standard

Audit Standard

Definition(s)

Audit Standard

Audit Standard means the Code for Implementation. Source: IMO Resolution A.1085(28), Amendments to the Convention on the International Regulations for Preventing Collisions at Sea, 1972, , 10 December 2013, Regulations Source: IMO Resolution A.1084(28), Amendments to International Convention on Tonnage Measurement of Ships, 1969, 10 December 2013, Regulations Source: IMO Resolution A.1083(28), Amendments to International Convention on Load Lines, 1966, 10 December 2013, Regulations
Code for Implementation

Code for Implementation

Definition(s)

Code for Implementation

Code for Implementation means the IMO Instruments Implementation Code (III Code) adopted by the Organization by resolution A.1070(28). Source: IMO Resolution A.1085(28), Amendments to the Convention on the International Regulations for Preventing Collisions at Sea, 1972, , 10 December 2013, Regulations Source: IMO Resolution A.1084(28), Amendments to International Convention on Tonnage Measurement of Ships, 1969, 10 December 2013, Regulations Source: IMO Resolution A.1083(28), Amendments to International Convention on Load Lines, 1966, 10 December 2013, Regulations
Audit Scheme

Audit Scheme

Definition(s)

Audit Scheme

Audit Scheme means the IMO Member State Audit Scheme established by the Organization and taking into account the guidelines developed by the Organization*. * Refer to the Framework and Procedures for the IMO Member State Audit Scheme, adopted by the Organization by resolution A.1067(28). Source: IMO Resolution A.1085(28), Amendments to the Convention on the International Regulations for Preventing Collisions at Sea, 1972, , 10 December 2013, Regulations Source: IMO Resolution A.1084(28), Amendments to International Convention on Tonnage Measurement of Ships, 1969, 10 December 2013, Regulations Source: IMO Resolution A.1083(28), Amendments to International Convention on Load Lines, 1966, 10 December 2013, Regulations
Vented Cell

Vented Cell

Definition(s)

Vented Cell

secondary cell having a cover provided with an opening through which products of electrolysis and evaporation are allowed to escape freely from the cell to the atmosphere [SOURCE: IEC 60050-482:2004, 482.05.14] Source: IEC 61892-6, Mobile and fixed offshore units – Electrical installations – Part 6: Installation, Third Edition, December  2013. Global Standards
Valve Regulated Lead Acid Battery

Valve Regulated Lead Acid Battery

Definition(s)

Valve Regulated Lead Acid Battery

secondary battery in which cells are closed but have a valve which allows the escape of gas if the internal pressure exceeds a predetermined value Note 1 to entry: The cell or battery cannot normally receive addition to the electrolyte. Note 2 to entry: This note applies to the French language only. [SOURCE IEC 60050-482:2004, 482.05.15]. Source: IEC 61892-6, Mobile and fixed offshore units – Electrical installations – Part 6: Installation, Third Edition, December  2013. Global Standards
VRLA

VRLA

Definition(s)

VRLA

valve regulated lead acid battery Source: IEC 61892-6, Mobile and fixed offshore units – Electrical installations – Part 6: Installation, Third Edition, December  2013. Global Standards
System Component

System Component

Definition(s)

System Component

part used within the system as cable tray length or cable ladder length, cable tray fitting or cable ladder fitting, support device, mounting device and system accessory Note 1 to entry: System components may not necessarily be included together in a system. Different combinations of system components may be used. [SOURCE: IEC 61537:2006, 3.2]. Source: IEC 61892-6, Mobile and fixed offshore units – Electrical installations – Part 6: Installation, Third Edition, December  2013. Global Standards
Support Device

Support Device

Definition(s)

Support Device

system component designed to provide mechanical support and which may limit movement of a cable runway [SOURCE: IEC 61537:2006, 3.7]. Source: IEC 61892-6, Mobile and fixed offshore units – Electrical installations – Part 6: Installation, Third Edition, December  2013. Global Standards
Sealed Cell

Sealed Cell

Definition(s)

Sealed Cell

cell which remains closed and does not release either gas or liquid when operated within the limits specified by the manufacturer Note 1 to entry: A sealed cell may be equipped with a safety device to prevent a dangerously high internal pressure and is designed to operate during its life in its original sealed state. [SOURCE IEC 60050-482:2004: 482.05.17) Source: IEC 61892-6, Mobile and fixed offshore units – Electrical installations – Part 6: Installation, Third Edition, December  2013. Global Standards
Extra-low Voltage

Extra-low Voltage

Definition(s)

Extra-low Voltage

voltage which does not exceed 50 V AC r.m.s. between conductors, or between any conductor and earth Note 1 to entry: The voltage limit should not be exceeded, either at full load or no load, but it is assumed, for the purpose of this definition, that any transformer or converter is operated at its rated supply voltage. Note 2 to entry: Information about protection by extra-low voltage is given in IEC 60364-4-41. Source: IEC 61892-6, Mobile and fixed offshore units – Electrical installations – Part 6: Installation, Third Edition, December  2013. Global Standards
ELV

ELV

Definition(s)

ELV

extra-low voltage. Source: IEC 61892-6, Mobile and fixed offshore units – Electrical installations – Part 6: Installation, Third Edition, December  2013. Global Standards
Surface Heating

Surface Heating

Definition(s)

Surface Heating

heat generated in the surface layer of a body to be heated by electrical means in order to raise or maintain its temperature. Source: IEC 61892-6, Mobile and fixed offshore units – Electrical installations – Part 6: Installation, Third Edition, December  2013. Global Standards
Trace Heating

Trace Heating

Definition(s)

Trace Heating

heat generated in the surface layer of a body to be heated by electrical means in order to raise or maintain its temperature Source: IEC 61892-6, Mobile and fixed offshore units – Electrical installations – Part 6: Installation, Third Edition, December  2013. Global Standards
Cable Tray System

Cable Tray System

Definition(s)

Cable Tray System

assembly of cable supports consisting of cable tray lengths or cable ladder lengths and other system components [SOURCE: IEC 61537:2006, 3.1]. Source: IEC 61892-6, Mobile and fixed offshore units – Electrical installations – Part 6: Installation, Third Edition, December  2013. Global Standards
Cable Ladder System

Cable Ladder System

Definition(s)

Cable Ladder System

assembly of cable supports consisting of cable tray lengths or cable ladder lengths and other system components [SOURCE: IEC 61537:2006, 3.1]. Source: IEC 61892-6, Mobile and fixed offshore units – Electrical installations – Part 6: Installation, Third Edition, December  2013. Global Standards
Battery Compartment

Battery Compartment

Definition(s)

Battery Compartment

compartment comprising dedicated rooms, dedicated lockers and dedicated boxes for installation of batteries. Source: IEC 61892-6, Mobile and fixed offshore units – Electrical installations – Part 6: Installation, Third Edition, December  2013. Global Standards
Vapor

Vapor

Definition(s)

Vapor

The gaseous state of materials; vapor release requires elevated temperature for materials which are liquid or solid at ambient temperature. Materials can burn only when in their vapor state. API RP 2201, Safe Hot Tapping Practices in the Petroleum & Petrochemical Industries, Fifth Edition, July 2003 (Reaffirmed October 2010), Global Standards
Tagout

Tagout

Definition(s)

Tagout

The placement of a tagout device on an energy isolating device, in accordance with an established procedure, to indicate that the energy isolating device and the equipment being controlled may not be operated until the tagout device is removed. API RP 2201, Safe Hot Tapping Practices in the Petroleum & Petrochemical Industries, Fifth Edition, July 2003 (Reaffirmed October 2010), Global Standards
Particulate

Particulate

Definition(s)

Particulate

Inhalable materials considered by ACGIH to be hazardous when deposited anywhere in the respiratory tract. API RP 2201, Safe Hot Tapping Practices in the Petroleum & Petrochemical Industries, Fifth Edition, July 2003 (Reaffirmed October 2010), Global Standards
Lower Flammable Limit (LFL)

Lower Flammable Limit (LFL)

Definition(s)

Lower Flammable Limit (LFL)

The concentration of a vapor in air (or other oxidant) below which propagation of flame does not occur on contact with an ignition source. The lower flammable limit is usually expressed as a volume percentage of the vapor in air. Sometimes called Lower Explosive Limit (LEL). API RP 2201, Safe Hot Tapping Practices in the Petroleum & Petrochemical Industries, Fifth Edition, July 2003 (Reaffirmed October 2010), Global Standards API RP 2009, Safe Welding, Cutting, and Hot Work Practices in the Petroleum and Petrochemical Industries, Seventh Edition, February 2002 (Reaffirmed, March 2012), Global Standards