Jargon Buster

Jargon Buster

Discover your custom Oil and Marine Jargon dictionary

NBR - Nitrile Butadiene Rubber

NBR - Nitrile Butadiene Rubber

NBR is mainly used in the manufacture of seals and other elements for industrial environments. Specially formulated to prevent oil attack, it keeps its mechanical properties intact, even in direct contact with oil and grease.

QCDC - Quick Connection Disconnection Coupling

QCDC

QCDC - Quick connection disconnetion coupling is a method of active coupling using manual activation which offers an easy way to connect and disconnect the hose string from the vessel.

Jettyless

Jettyless

Trelleborg's cryogenic floating hoses remove the need for costly and environmentally intensive small/medium-scale LNG jetty structures, providing a safe, efficient and flexible alternative that can keep pace with the rapid evolution of the LNG market.

Mutli Buoy Mooring (MBM)

MBM

Multi Buoy Mooring, also known as Conventional Buoy Mooring, is a simple, reliable import solution for crude oil, refined petroleum or LPG, from a shuttle tanker to storage thanks or a refinery. Deployed near to shore, the system connects a steel pipeline to the onshore installation, alongside a flexible subsea string for safe transfer of liquids, with multiple configuration options. 

Marine Breakaway Coupling (MBC)

MBC

The Marine Breakaway Coupling (MBC) device is typically installed into hose transfer systems at loading or offshore tanker discharging terminals. The MBC is designed to prevent oil spills during transfers by parting at a pressure lower than the burst capacity of the hose, closing slowly to prevent critical pressure surges.

Emissions Control Areas (ECA)

ECA

THe Emissions Control Areas (ECA) refer to specific areas where regulations minimise airbone emissions from ships as part of MARPOL (maritime pollution) Protocol. ECAs impose caps on the amount of sulfur oxide, nitrogen oxide or fine particulates that can be present in ship emissions. Vessels travelling in ECAs need to be careful about the type of fuel they use, and may even switch fuels when operating inside/outside ECAs.

Cross Tightening

Cross Tightening

Cross tightening is a bolt tightening method most commonly used on a simple square pattern or circular bolt pattern. Tightening bolts using these patterns ensures an even clamping distribution accross the part in question, such as a flange, and reduces the impact of preloading on the previously tightened bolts.

Butterfly Valve

Butterfly Valve

A butterfly valve is used to isolate or regulate fluid flow. The valve has a small disc that is mounted on a rotating shaft. When the disk is at right angle, the valve is open, allowing a full flow. This can be turned incrementally to control the passage of fluid, until it is fully closed.

Nippleless Flange

Nippleless Flange

Compact flange at the end of a hose, fully embedded in rubber, using a continuous inner liner and integrated gasket.
This creates a perfect seal between conveyed product and hose structure, resulting in a hose that survives harsher conditions for longer.

Nipple Flange

Nipple Flange

Most common type of flange, using a stiff metal connector at the end of a hose, Binding steel wires fix the nipple flange to the hose body structures.
Alternative flange: Nippleless.

Dual Carcass

Dual Carcass

Hose built with two independent carcasses made of steel cable layers which function independently.
The first working carcass provides internal pressure resistance, while the reinforcement carcass provides resistance to bending and tensile loads and stresses as well as protection of the main carcass from the external environment.

Double Carcass

Double Carcass

Hose built with carcass made of a textile layer and steel helix reinforcement, forming a single carcass.
The Double carcass consists to an additional carcass above the first, and a leak detection system (LDS) in the event of failure in the first carcass.
The second carcass contains oil in the event of a failure in the first.

Integrated Bend Stiffener

Integrated Bend Stiffener

IBS stands for Integrated Bending Stiffener : IBS is a built in bending stiffener fitted at the end of a hose at the manifold - the hardware to which the hose connects, or at all connections between hoses. The bending stiffener protects the end of the hose from bending too much, and provides a smooth transition of bending stiffness by gradually increasing the outer diameter from the central area to the flange.

FKM

FKM

FKM refers to the 'fluoroelastomer' category according to ASTM (American Society of Testing and Materials) when classifying materials. This type of rubber is resistant to heat and resists chemcial reactions. Hence, it is particularly suitable as the inner liner of a marine hose when handling corrosive fluids like high purity acids. They also presents a very low gas permeability and excellent resistance to oils.

PU cover

Orange PolyUrethane “PU”

Orange PolyUrethane “PU” is an extra anti-abrasion outer cover for the floating and submarine hoses which reducing repairing due to wear and cuts in operation.

Seawater intake (SWI)

Seawater intake (SWI) diverless and diver assisted configuration

The interface between a seawater intake riser and the hull of a vessel can be tied up and bolted to a flange, or laid down from a caisson to a dedicated receptacle without the need of divers.
For diver-assisted configuration the interface is made by a spool piece.
For diverless configuration, the interface is made by a riser head and a riser seat integrated directly to the hull during construction.

Strainer

Strainer

Strainer (n): A filtration device fitted at the inlet of a seawater intake riser to prevent fish and marine fauna from being sucked in.

Boil-off gas (BOG)

Boil-off gas

LNG tankers are designed to carry natural gas in liquid form at a temperature of – 163°C, close to the vaporization temperature. Despite tank insulation designed to limit the admission of external heat, even a small amount of it will cause slight evaporation of the cargo. This natural evaporation, known as boil-off is unavoidable and has to be removed from the tanks in order to maintain the cargo tank pressure.

PIG

PIG

A "pig" in the oil industry is a tool that is sent down a hose and propelled by the back pressure of the product flow in the flexible itself. Hundreds of different types exist, to address mainly four applications:
1. Physical separation between different fluids flowing through the hose
2. Internal cleaning of hoses
3. Inspection of the condition of hose walls (also known as an Inline Inspection (ILI) tool)
4. Capturing and recording geometric information relating to pipelines (e.g., size, position).

The U-Value

The U-Value

Thermal transmittance, also known as U-value, is the rate of transfer of heat through a structure (in W/m²K).
The better-insulated the structure is, the lower the U-value will be.

Vapour Return Line 

Vapour Return Line 

Import LNG Transfer
During the transfer of LNG, the level of liquid in the LNG carrier storage tank drops, while the amount in the receiving tank rises. The vapour return line is used to transfer vapour back to the original tank to compensate the amount of shifted liquid, helping to maintain the pressure in both tanks at the desired level.

Export LNG Transfer
For export LNG transfer, the vapour return line is uses to send back all of the boil-off gas (BOG) produced during the transfer to the export facility to re-liquify it.