Glossary
Browse the IADC Lexicon alphabetically or by category. Get comprehensive definitions of drilling industry terms.
Differential Scanning Calorimetry
Definition(s)
Differential Scanning Calorimetry
Method for determining the glass transition temperature of a polymer. Source: ISO 14692-1:2017, Petroleum and natural gas industries — Glass-reinforced plastics (GRP) piping — Part 1: Vocabulary, symbols, applications and materials, Second Edition, August 2017. Global StandardsDMTA
Definition(s)
DMTA
Dynamic mechanical thermal analysis. Source: ISO 14692-1:2017, Petroleum and natural gas industries — Glass-reinforced plastics (GRP) piping — Part 1: Vocabulary, symbols, applications and materials, Second Edition, August 2017. Global StandardsDMTA
Method for determining the glass transition temperature of a polymer orGRP (3.2.44) component. Source: ISO 14692-1:2017, Petroleum and natural gas industries — Glass-reinforced plastics (GRP) piping — Part 1: Vocabulary, symbols, applications and materials, Second Edition, August 2017. Global StandardsDLT
Definition(s)
DLT
Design life time.
Source: ISO 14692-1:2017, Petroleum and natural gas industries — Glass-reinforced plastics (GRP) piping — Part 1: Vocabulary, symbols, applications and materials, Second Edition, August 2017. Global StandardsDesign External Pressure
Definition(s)
Design External Pressure
Maximum positive external pressure differential, i.e. external minus internal pressure, intended to be experienced by a component during its service life. Source: ISO 14692-1:2017, Petroleum and natural gas industries — Glass-reinforced plastics (GRP) piping — Part 1: Vocabulary, symbols, applications and materials, Second Edition, August 2017. Global StandardsDesign Envelope
Definition(s)
Design Envelope
Long-term envelope reduced by the part factor f2 and the partial factors A0, A2 and A3. Source: ISO 14692-1:2017, Petroleum and natural gas industries — Glass-reinforced plastics (GRP) piping — Part 1: Vocabulary, symbols, applications and materials, Second Edition, August 2017. Global StandardsDensity of Heat Flow Rate
Definition(s)
Density of Heat Flow Rate
Quantity of heat divided by area and time. Source: ISO 14692-1:2017, Petroleum and natural gas industries — Glass-reinforced plastics (GRP) piping — Part 1: Vocabulary, symbols, applications and materials, Second Edition, August 2017. Global StandardsDelamination
Definition(s)
Delamination
Separation of two adjacent plies or layers of material in a laminate resulting from lack of adhesion.- Note: 1 to entry: Delamination occur either locally or covering a wide area.
Curing Agent
Definition(s)
Curing Agent
Catalytic or reactive agent that, when added to a resin, causes polymerization.- Note: 1 to entry: This is also called hardener (3.2.51), for epoxies.
Cure Cycle
Definition(s)
Cure Cycle
Time/temperature/pressure cycle used to cure a thermosetting resin system from a liquid to a solid. Source: ISO 14692-1:2017, Petroleum and natural gas industries — Glass-reinforced plastics (GRP) piping — Part 1: Vocabulary, symbols, applications and materials, Second Edition, August 2017. Global StandardsCure
Definition(s)
Cure
Change irreversibly the properties of a thermosetting resin by chemical reaction.- Note: 1 to entry: Examples of such chemical reaction are condensation, ring closure and addition.
- Note: 2 to entry: Cure can be accomplished by the addition of a curing agent and catalyst, with or without heat and pressure.
conductive
Definition(s)
Conductive
Having a volume resistivity equal to or lower than 104 Ω⋅m. Source: ISO 14692-1:2017, Petroleum and natural gas industries — Glass-reinforced plastics (GRP) piping — Part 1: Vocabulary, symbols, applications and materials, Second Edition, August 2017. Global StandardsChopped Strand Mat
Definition(s)
Chopped Strand Mat
Reinforcement structure in which short lengths of glass fibre tows, held together by an emulsion or powder binding agent, are dispersed in random directions within a single plane.- Note: 1 to entry: Chopped strand mat is not to be confused with chopped roving. The latter may not be in mat form and may be loose rovings from a chopper gun.
CSM
Definition(s)
CSM
Chopped strand mat. Source: ISO 14692-1:2017, Petroleum and natural gas industries — Glass-reinforced plastics (GRP) piping — Part 1: Vocabulary, symbols, applications and materials, Second Edition, August 2017. Global StandardsCSM
Reinforcement structure in which short lengths of glass fibre tows, held together by an emulsion or powder binding agent, are dispersed in random directions within a single plane.- Note: 1 to entry: Chopped strand mat is not to be confused with chopped roving. The latter may not be in mat form and may be loose rovings from a chopper gun.
Chemical-resistant glass
Definition(s)
Chemical-resistant glass
Glass fibre or synthetic veil having a specific chemical resistance against acids, alkalis or other aggressive chemicals.- Note: 1 to entry: Such glass can be used as a reinforcement for the resin-rich internal liner of GRP pipe or as a reinforcement in the structural portion of GRP pipe.
Chopped Roving
Definition(s)
Chopped Roving
Strands of glass fibre cut to a desired length from rovings. Source: ISO 14692-1:2017, Petroleum and natural gas industries — Glass-reinforced plastics (GRP) piping — Part 1: Vocabulary, symbols, applications and materials, Second Edition, August 2017. Global StandardsCarbon Fibre
Definition(s)
Carbon Fibre
Fibre produced by the pyrolysis of organic precursor fibres, such as rayon, polyacrylonitrile, in an inert environment.Source: ISO 14692-1:2017, Petroleum and natural gas industries — Glass-reinforced plastics (GRP) piping — Part 1: Vocabulary, symbols, applications and materials, Second Edition, August 2017. Global Standards
Butt-welded joint
Definition(s)
Butt-welded joint
Joint consisting of plain-ended pipe and fittings laminated together with reinforcing fibres and resin/hardener mixture. Source: ISO 14692-1:2017, Petroleum and natural gas industries — Glass-reinforced plastics (GRP) piping — Part 1: Vocabulary, symbols, applications and materials, Second Edition, August 2017. Global StandardsButt-and-strap joint
Definition(s)
Butt-and-strap joint
Joint consisting of plain-ended pipe and fittings laminated together with reinforcing fibres and resin/hardener mixture. Source: ISO 14692-1:2017, Petroleum and natural gas industries — Glass-reinforced plastics (GRP) piping — Part 1: Vocabulary, symbols, applications and materials, Second Edition, August 2017. Global StandardsButt-and-wrap joint
Definition(s)
Butt-and-wrap joint
Joint consisting of plain-ended pipe and fittings laminated together with reinforcing fibres and resin/hardener mixture. Source: ISO 14692-1:2017, Petroleum and natural gas industries — Glass-reinforced plastics (GRP) piping — Part 1: Vocabulary, symbols, applications and materials, Second Edition, August 2017. Global StandardsC glass
Definition(s)
C glass
Glass fibre or synthetic veil having a specific chemical resistance against acids, alkalis or other aggressive chemicals.- Note: 1 to entry: Such glass can be used as a reinforcement for the resin-rich internal liner of GRP pipe or as a reinforcement in the structural portion of GRP pipe.
Boron-free glass
Definition(s)
Boron-free glass
Glass fibre or synthetic veil having a specific chemical resistance against acids, alkalis or other aggressive chemicals- Note: 1 to entry: Such glass can be used as a reinforcement for the resin-rich internal liner of GRP pipe or as a reinforcement in the structural portion of GRP pipe.
Axial load-free testing
Definition(s)
Axial load-free testing
Pressure-testing arrangement using a pipe-sealing device or mechanism such that internal pressure produces hoop and radial stresses only in the component wall. Source: ISO 14692-1:2017, Petroleum and natural gas industries — Glass-reinforced plastics (GRP) piping — Part 1: Vocabulary, symbols, applications and materials, Second Edition, August 2017. Global StandardsAR (acid resistant) glass
Definition(s)
AR (acid resistant) glass
Glass fibre or synthetic veil having a specific chemical resistance against acids, alkalis or other aggressive chemicals.- Note: 1 to entry: Such glass can be used as a reinforcement for the resin-rich internal liner of GRP pipe or as a reinforcement in the structural portion of GRP pipe.
Anisotropic
Definition(s)
Anisotropic
Exhibiting different properties when tested along axes in different directions.Source: ISO 14692-1:2017, Petroleum and natural gas industries — Glass-reinforced plastics (GRP) piping — Part 1: Vocabulary, symbols, applications and materials, Second Edition, August 2017. Global Standards
Adhesive Joint
Definition(s)
Adhesive Joint
Rigid type of joint between two components made using an adhesive.- Note: 1 to entry: An adhesive joint generally consists of a slightly conical (tapered) bell end and a machined (cylindrical or tapered) spigot end.
Adhesive Bond
Definition(s)
Adhesive Bond
Rigid type of joint between two components made using an adhesive- Note: 1 to entry: An adhesive joint generally consists of a slightly conical (tapered) bell end and a machined (cylindrical or tapered) spigot end.
Active Fire Protection
Definition(s)
Active Fire Protection
Method of extinguishing fire by application of substances such as halon, water, carbon dioxide, foam, etc.
Source: ISO 14692-1:2017, Petroleum and natural gas industries — Glass-reinforced plastics (GRP) piping — Part 1: Vocabulary, symbols, applications and materials, Second Edition, August 2017. Global StandardsAccelerator
Definition(s)
Accelerator
Substance which, when mixed with a catalyst or a resin, will speed up the chemical reaction between catalyst and resin.- Note:1 to entry: The misuse of a cobalt mixture directly with a peroxide (e.g methyl ethyl ketone peroxide (MEKP) -catalyst) might cause an explosion or fire.