Glossary
Browse the IADC Lexicon alphabetically or by category. Get comprehensive definitions of drilling industry terms.
Verifier
Definition(s)
Verifier
Verifier means an Administration or organization duly authorized by it, which conducts the survey and certification of the EEDI in accordance with regulations 5, 6, 7, 8 and 9 of MARPOL Annex VI and these Guidelines. Source: Resolution MEPC.214(63), 2012 Guidelines on survey and certification of the Energy Efficiency Design Index (EEDI), 2 March 2012, International Maritime Organization. Regulatory GuidanceSpace
Definition(s)
Space
"Space" means a permanent or temporary three-dimensional structure or compartment on a ship such as, but not limited to, cargo tanks or holds; pump or engine rooms; storage lockers; tanks containing flammable or combustible liquids, gases, or solids; other rooms; crawl spaces; tunnels (i.e. shaft alleys); or access ways. The atmosphere within a space is the entire volume within its bounds. Source: Resolution MEPC.210(63), 2012 Guidelines for safe and environmentally sound ship recycling, 2 March 2012, International Maritime Organization. Regulatory GuidanceSpace
Spaces are separate compartments such as tanks, pump-rooms, cofferdams and void spaces bounding cargo holds, decks and outer hull. Source: Rules and Regulations for the Classification of Mobile Offshore Units, Part 1, Regulations, June 2013, Lloyd’s Register, Global StandardsSpaces
Separate compartments including holds and tanks. Source: Rules for Classification – Offshore units, DNVGL-OU-0101, Offshore drilling and support units, DNV GL, July 2015. Global StandardsDangerous Atmosphere
Definition(s)
Dangerous Atmosphere
"Dangerous atmosphere" means an atmosphere that may expose workers to the risk of death, incapacitation, impairment of ability to self-rescue (i.e. to escape unaided from a space), injury or acute illness. Source: Resolution MEPC.210(63), 2012 Guidelines for safe and environmentally sound ship recycling, 2 March 2012, International Maritime Organization. Regulatory GuidanceAdjacent Space
Definition(s)
Adjacent Space
"Adjacent space" means those spaces bordering a space in all directions, including all points of contact, corners, diagonals, decks, tank tops and bulkheads. Source: Resolution MEPC.210(63), 2012 Guidelines for safe and environmentally sound ship recycling, 2 March 2012, International Maritime Organization. Regulatory GuidanceStates
Definition(s)
States
States means coastal, port or Member States as appropriate. Source: Resolution MEPC.207(62), 2011 Guidelines for the control and management of ships' biofouling to minimize the transfer of invasive aquatic species, 15 July 2011, International Maritime Organization. Regulatory GuidanceFPSOs
Definition(s)
FPSOs
floating production storage and off-loading units Source: Resolution MEPC.207(62), 2011 Guidelines for the control and management of ships' biofouling to minimize the transfer of invasive aquatic species, 15 July 2011, International Maritime Organization. Regulatory GuidanceFSUs
Definition(s)
FSUs
floating storage units Source: Resolution MEPC.207(62), 2011 Guidelines for the control and management of ships' biofouling to minimize the transfer of invasive aquatic species, 15 July 2011, International Maritime Organization. Regulatory GuidancePort State Authority
Definition(s)
Port State Authority
Port State authority means any official or organization authorized by the Government of a port State to verify the compliance and enforcement of standards and regulations relevant to the implementation of national and international shipping control measures. Source: Resolution MEPC.207(62), 2011 Guidelines for the control and management of ships' biofouling to minimize the transfer of invasive aquatic species, 15 July 2011, International Maritime Organization. Regulatory GuidanceNiche Areas
Definition(s)
Niche Areas
Niche areas mean areas on a ship that may be more susceptible to biofouling due to different hydrodynamic forces, susceptibility to coating system wear or damage, or being inadequately, or not, painted, e.g., sea chests, bow thrusters, propeller shafts, inlet gratings, dry-dock support strips, etc. Source: Resolution MEPC.207(62), 2011 Guidelines for the control and management of ships' biofouling to minimize the transfer of invasive aquatic species, 15 July 2011, International Maritime Organization. Regulatory GuidanceMicrofouling
Definition(s)
Microfouling
Microfouling means microscopic organisms including bacteria and diatoms and the slimy substances that they produce. Biofouling comprised of only microfouling is commonly referred to as a slime layer. Source: Resolution MEPC.207(62), 2011 Guidelines for the control and management of ships' biofouling to minimize the transfer of invasive aquatic species, 15 July 2011, International Maritime Organization. Regulatory GuidanceMacrofouling
Definition(s)
Macrofouling
Macrofouling means large, distinct multicellular organisms visible to the human eye such as barnacles, tubeworms, or fronds of algae. Source: Resolution MEPC.207(62), 2011 Guidelines for the control and management of ships' biofouling to minimize the transfer of invasive aquatic species, 15 July 2011, International Maritime Organization. Regulatory GuidanceMGPS
Definition(s)
MGPS
Marine Growth Prevention System Source: Resolution MEPC.207(62), 2011 Guidelines for the control and management of ships' biofouling to minimize the transfer of invasive aquatic species, 15 July 2011, International Maritime Organization. Regulatory GuidanceMarine Growth Prevention System (MGPS)
Definition(s)
Marine Growth Prevention System (MGPS)
Marine Growth Prevention System (MGPS) means an anti-fouling system used for the prevention of biofouling accumulation in internal seawater cooling systems and sea chests and can include the use of anodes, injection systems and electrolysis. Source: Resolution MEPC.207(62), 2011 Guidelines for the control and management of ships' biofouling to minimize the transfer of invasive aquatic species, 15 July 2011, International Maritime Organization. Regulatory GuidanceInvasive Aquatic Species
Definition(s)
Invasive Aquatic Species
Invasive aquatic species means a species which may pose threats to human, animal and plant life, economic and cultural activities and the aquatic environment. Source: Resolution MEPC.207(62), 2011 Guidelines for the control and management of ships' biofouling to minimize the transfer of invasive aquatic species, 15 July 2011, International Maritime Organization. Regulatory GuidanceIn-water Cleaning
Definition(s)
In-water Cleaning
In-water cleaning means the physical removal of biofouling from a ship while in the water. Source: Resolution MEPC.207(62), 2011 Guidelines for the control and management of ships' biofouling to minimize the transfer of invasive aquatic species, 15 July 2011, International Maritime Organization. Regulatory GuidanceBiofouling
Definition(s)
Biofouling
Biofouling means the accumulation of aquatic organisms such as micro-organisms, plants, and animals on surfaces and structures immersed in or exposed to the aquatic environment. Biofouling can include microfouling and macrofouling (see below. Source: Resolution MEPC.207(62), 2011 Guidelines for the control and management of ships' biofouling to minimize the transfer of invasive aquatic species, 15 July 2011, International Maritime Organization. Regulatory GuidanceAnti-fouling Coating system
Definition(s)
Anti-fouling Coating system
Anti-fouling coating system means the combination of all component coatings, surface treatments (including primer, sealer, binder, anti-corrosive and anti-fouling coatings) or other surface treatments, used on a ship to control or prevent attachment of unwanted aquatic organisms. Source: Resolution MEPC.207(62), 2011 Guidelines for the control and management of ships' biofouling to minimize the transfer of invasive aquatic species, 15 July 2011, International Maritime Organization. Regulatory GuidanceAFS Convention
Definition(s)
AFS Convention
AFS Convention means the International Convention on the Control of Harmful Anti-Fouling Systems on Ships, 2001. Source: Resolution MEPC.207(62), 2011 Guidelines for the control and management of ships' biofouling to minimize the transfer of invasive aquatic species, 15 July 2011, International Maritime Organization. Regulatory GuidanceHazardous Atmosphere
Definition(s)
Hazardous Atmosphere
Atmosphere that has the potential to expose entrants to the risk of death, incapacitation, impaired ability to self-rescue (e.g. escape unaided from a permit required confined space), injury, or acute illness from one or more of the following causes:- flammable gas, vapor, or mist in excess of 10 % LEL;
- airborne combustible dust at a concentration that meets or exceeds its LEL;
- atmospheric oxygen concentrations below 19.5 % and above 23.5 %;
- atmospheric concentration of any substance for which a dose or OEL is published in applicable government regulations, safety data sheets (SDS), standards, or other published or internal documents and could result in responder exposure in excess of its dose or PEL;
- any other IDLH atmospheric condition.