Glossary
Browse the IADC Lexicon alphabetically or by category. Get comprehensive definitions of drilling industry terms.
Seagoing Condition
Definition(s)
Seagoing condition
Seagoing condition means the operating condition of the unit with the personnel, equipment, fluids, and ballast necessary for safe operation on the waters where the unit operates. For bottom-bearing mobile offshore drilling units (MODU), the term also applies in the bottom-bearing mode, but the lightest seagoing condition is considered to be the highest anticipated operating condition. Source: Mobile Offshore Drilling Units, 46 CFR 107-109 (2013). RegulationsRescue Boat
Definition(s)
Rescue Boat
Rescue boat means a boat designed to rescue persons in distress and to marshal survival craft. Source: Mobile Offshore Drilling Units, 46 CFR 107-109 (2013). RegulationsRescue Boat
Rescue boat has the same meaning as defined in SOLAS regulation III/3. Source: IMO Resolution A.1023(26), Code for the Construction and Equipment of Mobile Offshore Drilling Units (2009 MODU Code), 2009. Global StandardsRescue Boat
Rescue boat is a boat designed to rescue persons in distress and to marshal survival craft. <Chapter III, Part A, regulation 3>. Source: IMO Resolution MSC.47(66), adoption of amendments to the International Convention for the Safety of Life at Sea (SOLAS), 1974, 4 June 1996, International Maritime Organization. LegislationRetrieval
Definition(s)
Retrieval
Retrieval means the safe recovery of survivors. Source: Mobile Offshore Drilling Units, 46 CFR 107-109 (2013). RegulationsRetrieval
Retrieval is the safe recovery of survivors. <Chapter III, Part A, regulation 3>. Source: IMO Resolution MSC.47(66), adoption of amendments to the International Convention for the Safety of Life at Sea (SOLAS), 1974, 4 June 1996, International Maritime Organization. LegislationPoint of Access
Definition(s)
Point of access
Point of access means the place on deck of a vessel where a person steps onto or off of pilot boarding equipment. Source: Mobile Offshore Drilling Units, 46 CFR 107-109 (2013). RegulationsPilot Boarding Equipment
Definition(s)
Pilot boarding equipment
Pilot boarding equipment means a pilot ladder, accommodation ladder, pilot hoist, or combination of them as required by this subchapter. Source: Mobile Offshore Drilling Units, 46 CFR 107-109 (2013). RegulationsNovel Lifesaving Appliance or Arrangement
Definition(s)
Novel Lifesaving Appliance or Arrangement
Novel lifesaving appliance or arrangement means one that has new features not fully covered by the provisions of this subchapter but providing an equal or higher standard of safety. Source: Mobile Offshore Drilling Units, 46 CFR 107-109 (2013). RegulationsNovel Life-Saving Arrangement
Novel life-saving appliance or arrangement is a life-saving appliance or arrangement which embodies new features not fully covered by the provisions of this chapter or the Code but which provides an equal or higher standard of safety. <Chapter III, Part A, regulation 3>. Source: IMO Resolution MSC.47(66), adoption of amendments to the International Convention for the Safety of Life at Sea (SOLAS), 1974, 4 June 1996, International Maritime Organization. LegislationNovel Life-Saving Appliance
Novel life-saving appliance or arrangement is a life-saving appliance or arrangement which embodies new features not fully covered by the provisions of this chapter or the Code but which provides an equal or higher standard of safety. <Chapter III, Part A, regulation 3>. Source: IMO Resolution MSC.47(66), adoption of amendments to the International Convention for the Safety of Life at Sea (SOLAS), 1974, 4 June 1996, International Maritime Organization. LegislationNon-self-propelled Unit
Definition(s)
Non-self-propelled unit
Non-self-propelled unit means a unit which is not self-propelled. Source: Mobile Offshore Drilling Units, 46 CFR 107-109 (2013). RegulationsMuster Station
Definition(s)
Muster station
Muster station means the place where the crew and industrial personnel assemble before boarding a survival craft. Source: Mobile Offshore Drilling Units, 46 CFR 107-109 (2013). RegulationsMaster or Person in Charge
Definition(s)
Master or person in charge
Master or Person in charge means a person designated under § 109.107. Source: Mobile Offshore Drilling Units, 46 CFR 107-109 (2013). RegulationsMarine Evacuation System
Definition(s)
Marine Evacuation System
Marine evacuation system means an appliance designed to rapidly transfer large numbers of persons from an embarkation station by means of a passage to a floating platform for subsequent embarkation into associated survival craft, or directly into associated survival craft. Source: Mobile Offshore Drilling Units, 46 CFR 107-109 (2013). RegulationsMarine Evacuation System
Marine evacuation system is an appliance for the rapid transfer of persons from the embarkation deck of a ship to a floating survival craft. <Chapter III, Part A, regulation 3>. Source: IMO Resolution MSC.47(66), adoption of amendments to the International Convention for the Safety of Life at Sea (SOLAS), 1974, 4 June 1996, International Maritime Organization. LegislationLifejacket
Definition(s)
Lifejacket
Lifejacket means a flotation device approved as a life preserver or lifejacket.1Life-jacket
Device worn by personnel which has sufficient buoyancy and stability in water to turn the body of an unconscious person and keep the person’s mouth clear of the water.2Source(s)
1. Mobile Offshore Drilling Units, 46 CFR 107-109 (2013). Regulations 2. ISO 15544:2000, Petroleum and natural gas industries – Offshore production installations – Requirements and guidelines for emergency. Global Standards
Launching Arrangement
Definition(s)
Launching Appliance or Launching Arrangement
Launching appliance or launching arrangement means the method or devices for transferring a survival craft or rescue boat from its stowed position to the water. For a launching arrangement using a davit, the term includes the davit, winch, and falls. Source: Mobile Offshore Drilling Units, 46 CFR 107-109 (2013). RegulationsLaunching Arrangement
Launching appliance or arrangement is a means of transferring a survival craft or rescue boat from its stowed position safely to the water. <Chapter III, Part A, regulation 3>. Source: IMO Resolution MSC.47(66), adoption of amendments to the International Convention for the Safety of Life at Sea (SOLAS), 1974, 4 June 1996, International Maritime Organization. LegislationLaunching Appliance
Definition(s)
Launching Appliance or Launching Arrangement
Launching appliance or launching arrangement means the method or devices for transferring a survival craft or rescue boat from its stowed position to the water. For a launching arrangement using a davit, the term includes the davit, winch, and falls. Source: Mobile Offshore Drilling Units, 46 CFR 107-109 (2013). RegulationsLaunching Appliance
Launching appliance or arrangement is a means of transferring a survival craft or rescue boat from its stowed position safely to the water. <Chapter III, Part A, regulation 3>. Source: IMO Resolution MSC.47(66), adoption of amendments to the International Convention for the Safety of Life at Sea (SOLAS), 1974, 4 June 1996, International Maritime Organization. LegislationInternational Voyage
Definition(s)
International voyages
International voyages means voyages in international waters, as defined in chapter I of the 1974 SOLAS Convention, as amended. Source: IMO resolution A.1021(26), Guidelines for ships operating in polar waters, 18 January 2010, International Maritime Organization, Regulatory GuidanceInternational voyage
“International voyage” means a voyage by a ship entitled to fly the flag of one State to or from a port, shipyard, or offshore terminal under the jurisdiction of another State. Source: International Convention on the Control of Harmful Anti-fouling Systems on Ships,2001, LegislationInternational voyage
“International voyage” has the same meaning as stated in Regulation 2(d) of part A, chapter I in the International Convention for Safety of Life at Sea, 1974. (SOLAS 74), which is: “a voyage from a country to which the present Convention applies to a port outside such country, or conversely. The Coast Guard has interpreted this definition to include the following:- A voyage from a country to which SOLAS 1974 applies, to a port outside that country or the reverse;
- A voyage from any territory, including the Commonwealth of Puerto Rico, all possesssions of the United States, and all lands held by the United States under a protectorate or mandate, whose international relations are the responsibility of a contracting SOLAS 74 government, or which is administered by the United Nations, to a port outside that territory or the reverse.
International voyages
"International voyage" means a voyage by a ship entitled to fly the flag of one State to or from a port, shipyard, or offshore terminal under the jurisdiction of another State. Source: Source: Resolution MEPC.195(61), 2010 Guidelines for Survey and Certification of Anti-fouling Systemson Ships, 1 October 2010, International Maritime Organization. Regulatory GuidanceInternational Service
Definition(s)
International service
International service means operation of a mobile offshore drilling unit on an international voyage or in waters under the jurisdiction of foreign nations or the United Nations. Source: Mobile Offshore Drilling Units, 46 CFR 107-109 (2013). RegulationsInflated Appliance
Definition(s)
Inflated Appliance
Inflated appliance means an appliance that depends upon nonrigid, gas-filled chambers for buoyancy and that is kept inflated and ready for use at all times. Source: Mobile Offshore Drilling Units, 46 CFR 107-109 (2013). RegulationsInflated Appliance
Inflated appliance is an appliance which depends upon non-rigid, gas-filled chambers for buoyancy and which is kept inflated and ready for use at all times. <Chapter III, Part A, regulation 3>. Source: IMO Resolution MSC.47(66), adoption of amendments to the International Convention for the Safety of Life at Sea (SOLAS), 1974, 4 June 1996, International Maritime Organization. LegislationInflatable Appliance
Definition(s)
Inflatable Appliance
Inflatable appliance means an appliance that depends upon nonrigid, gas-filled chambers for buoyancy and that is normally kept uninflated until ready for use. Source: Mobile Offshore Drilling Units, 46 CFR 107-109 (2013). RegulationsInflatable Appliance
Inflatable appliance is an appliance which depends upon non-rigid, gas-filled chambers for buoyancy and which is normally kept uninflated until ready for use. <Chapter III, Part A, regulation 3>. Source: IMO Resolution MSC.47(66), adoption of amendments to the International Convention for the Safety of Life at Sea (SOLAS), 1974, 4 June 1996, International Maritime Organization. LegislationIndustrial Systems and Components
Definition(s)
Industrial systems and components
Industrial systems and components means any machinery or equipment except diving systems on board a mobile offshore drilling unit for use in the industrial function of the unit. Source: Mobile Offshore Drilling Units, 46 CFR 107-109 (2013). RegulationsImmersion Suit
Definition(s)
Immersion Suit
Immersion suit means protective suit that reduces loss of body heat of a person wearing it in cold water. Source: Mobile Offshore Drilling Units, 46 CFR 107-109 (2013). RegulationsImmersion Suit
Immersion suit is a protective suit which reduces the body heatloss of a person wearing it in cold water. <Chapter III, Part A, regulation 3>. Source: IMO Resolution MSC.47(66), adoption of amendments to the International Convention for the Safety of Life at Sea (SOLAS), 1974, 4 June 1996, International Maritime Organization. LegislationFree-Fall Launch
Definition(s)
Free-Fall Launching
Free-fall launching means the method of launching a survival craft whereby the craft, with its full complement of persons and equipment on board, is released and allowed to fall into the sea without any restraining apparatus. Source: Mobile Offshore Drilling Units, 46 CFR 107-109 (2013). RegulationsFree-Fall Launching
Free-fall launching is that method of launching a survival craft whereby the craft with its complement of persons and equipment on board is released and allowed to fall into the sea without any restraining apparatus. <Chapter III, Part A, regulation 3>. Source: IMO Resolution MSC.47(66), adoption of amendments to the International Convention for the Safety of Life at Sea (SOLAS), 1974, 4 June 1996, International Maritime Organization. LegislationHeadquarters
Definition(s)
Headquarters
Headquarters means Office of the Commandant, U.S. Coast Guard, Washington, D.C. 20593-0001. Source: Mobile Offshore Drilling Units, 46 CFR 107-109 (2013). RegulationsFloat-Free Launch
Definition(s)
Float-Free Launch
Float-free launching means the method of launching a survival craft or lifesaving appliance whereby the craft or appliance is automatically released from a sinking unit and is ready for use. Source: Mobile Offshore Drilling Units, 46 CFR 107-109 (2013). RegulationsFloat-Free Launching
Float-free launching is that method of launching a survival craft whereby the craft is automatically released from a sinking ship and is ready for use. <Chapter III, Part A, regulation 3>. Source: IMO Resolution MSC.47(66), adoption of amendments to the International Convention for the Safety of Life at Sea (SOLAS), 1974, 4 June 1996, International Maritime Organization. LegislationEquivalent Material
Definition(s)
Equivalent material
Equivalent material means a material that by itself or with insulation has smoke and fire retardant properties equal to that of the steel required for “A” or “B” class bulkheads or decks and has structural qualities equivalent to steel at the end of the applicable fire exposure. Source: Mobile Offshore Drilling Units, 46 CFR 107-109 (2013). RegulationsEmbarkation Station
Definition(s)
Embarkation station
A location from which persons embark into survival craft or are assembled prior to embarking into survival craft. Source: API Recommended Practice 14FZ, Recommended Practice for Design, Installation, and Maintenance of Electrical Systems for Fixed and Floating Offshore Petroleum Facilities for Unclassified and Class I, Zone 0, Zone 1, and Zone 2 Locations, Second Edition, May 2013. Global Standards Source: API RP 14F, Design, Installation, and Maintenance of Electrical Systems for Fixed and Floating Offshore Petroleum Facilities for Unclassified and Class 1, Division 1 and Division 2 Locations, Fifth Edition, July 2008. Global StandardsEmbarkation station
Embarkation station means the place where a survival craft is boarded. Source: Mobile Offshore Drilling Units, 46 CFR 107-109 (2013). RegulationsEmbarkation Ladder
Definition(s)
Embarkation Ladder
Embarkation ladder means the ladder provided at survival craft embarkation stations to permit safe access to survival craft after launching. Source: Mobile Offshore Drilling Units, 46 CFR 107-109 (2013). RegulationsEmbarkation Ladder
Embarkation ladder is the ladder provided at survival craft embarkation stations to permit safe access to survival craft after launching. <Chapter III, Part A, regulation 3>. Source: IMO Resolution MSC.47(66), adoption of amendments to the International Convention for the Safety of Life at Sea (SOLAS), 1974, 4 June 1996, International Maritime Organization. LegislationDrillship
Definition(s)
Drillship
a drilling installation with a ship-shaped single- or multiple-hull arrangementl. Source: Atlantic Canada Offshore Petroleum Industry, Standard Practice for the Training and Qualifications of Personnel, 2013, Canadian Association of Petroleum Producers, Global StandardsDrillship
Drillship means a surface type unit with a single shipshape displacement hull. Source. Mobile Offshore Drilling Units, 46 CFR 107-109 (2013). RegulationsColumn Stabilized Unit
Definition(s)
Column-Stabilized Unit
Column-stabilized unit is a unit with the main deck connected to the underwater hull or footings by columns or caissons. Source: IMO Resolution A.1023(26), Code for the Construction and Equipment of Mobile Offshore Drilling Units (2009 MODU Code), 2009. Global Standards Source: IMO resolution MSC.267(85), International Code on Intact Stability, 2008 (2008 IS Code), 4 December 2008, International Maritime Organization. Regulatory Guidance Source: Mobile Offshore Drilling Units, 46 CFR 107-109 (2013). Regulations Source: IMO Resolution MSC.267(85), adoption of the International Code on Intact Stability, 2008 (2008 IS Code), 4 December 2008, International Maritime Organization. Regulatory GuidanceClassified Locations
Definition(s)
Classified Locations
A classified location is a location classified as Division 1 or Division 2, or Zone 0, Zone 1, or Zone 2. Source: API Recommended Practice 14FZ, Recommended Practice for Design, Installation, and Maintenance of Electrical Systems for Fixed and Floating Offshore Petroleum Facilities for Unclassified and Class I, Zone 0, Zone 1, and Zone 2 Locations, Second Edition, May 2013. Global Standards Source: API RP 14F, Design, Installation, and Maintenance of Electrical Systems for Fixed and Floating Offshore Petroleum Facilities for Unclassified and Class 1, Division 1 and Division 2 Locations, Fifth Edition, July 2008. Global StandardsClass I location
A Class I location is one in which flammable gases or vapors are or may be present in the air in quantities sufficient to produce explosive or ignitable mixtures. (See NEC Article 500 and NEC Article 505 and API 500 and API 505.) Source: API RP 14F, Design, Installation, and Maintenance of Electrical Systems for Fixed and Floating Offshore Petroleum Facilities for Unclassified and Class 1, Division 1 and Division 2 Locations, Fifth Edition, July 2008. Global StandardsClass I, Division 1 location A
Class I, Division 1 location is a location: 1) in which ignitable concentrations of flammable gases or vapors exist continuously, intermittently, or periodically under normal operating conditions; or 2) in which ignitable concentration of such gases or vapors may exist frequently because of repair or maintenance operations or because of leakage; or 3) in which breakdown or faulty operation of equipment or processes might release ignitable concentrations of flammable gases or vapors, and might also cause simultaneous failure of electrical equipment (see NEC Article 500 and API 500). Source: API RP 14F, Design, Installation, and Maintenance of Electrical Systems for Fixed and Floating Offshore Petroleum Facilities for Unclassified and Class 1, Division 1 and Division 2 Locations, Fifth Edition, July 2008. Global StandardsClass I, Division 2 location
A Class I, Division 2 location is a location: 1) in which volatile flammable liquids or flammable gases are handled, processed, or used, but in which the hazardous liquids, vapors, or gases will normally be confined within closed containers or closed systems from which they can escape only if accidental rupture or breakdown of such containers or systems or abnormal operation of equipment occurs; or 2) in which hazardous concentrations of gases or vapors are normally prevented by positive mechanical ventilation but that might become hazardous through failure or abnormal operation of the ventilating equipment; or 3) that is adjacent to a Class I, Division 1 location, and to which hazardous concentration of gases or vapors might occasionally be communicated unless such communication is prevented by adequate positive-pressure ventilation from a source of clean air, and effective safeguards against ventilation failure are provided. (See NEC Article 500 and API 500.) Source: API RP 14F, Design, Installation, and Maintenance of Electrical Systems for Fixed and Floating Offshore Petroleum Facilities for Unclassified and Class 1, Division 1 and Division 2 Locations, Fifth Edition, July 2008. Global StandardsClassified locations
Classified locations are those in which flammable hydrocarbon gas or vapors, resulting from the drilling operations, may be present in quantities sufficient to produce an explosive or ignitable mixture. Location of these areas affect the design of the units' machinery, electrical, and ventilation systems. (See Notes 1 and 2). Notes:- Further requirements with respect to hazardous locations are contained in part 111, subpart 111.105, of this chapter.
- For specific requirements for machinery and electrical installations on mobile offshore drilling units see Subchapters “F” and “J” of this chapter.