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A tie-off generally involves wrapping the line round a fixed object once or twice, and may be made more secure by adding a lock, which is made by looping the reel around the incoming line and taking up the slack, before continuing the lay. A lock also puts the incoming and continuing parts of the line in contact, which makes it much easier to ...
The uni knot is widely used for attaching hooks, rings and swivels to the end of the line [7] and it is also used for joining two fishing lines together. [8] The bend form of the uni knot (for joining two lines) is not a noose; rather it is akin to a multiple fisherman's knot with the two opposing knotted parts arranged in the manner of uni knots.
A velocity-type meter measures the velocity of flow through a meter of known internal capacity. The speed of the flow can then be converted into a volume of flow to determine the usage. There are several types of meters that measure water flow velocity, including jet meters (single-jet and multi-jet), turbine meters, propeller meters and mag ...
The magnetic flow meter requires a conducting fluid, for example, water that contains ions, and an electrical insulating pipe surface, for example, a rubber-lined steel tube. If the magnetic field direction were constant, electrochemical and other effects at the electrodes would make the potential difference difficult to distinguish from the ...
A reel is a tool used to store elongated and flexible objects (e.g. yarns/cords, ribbons, cables, hoses, etc.) by wrapping the material around a cylindrical core known as a spool. Many reels also have flanges (known as the rims ) around the ends of the spool to help retain the wrapped material and prevent unwanted slippage off the ends.
Because they are used for domestic water measurement, piston meters, also known as rotary piston or semi-positive displacement meters, are the most common flow measurement devices in the UK and are used for almost all meter sizes up to and including 40 mm (1 + 1 ⁄ 2 in). The piston meter operates on the principle of a piston rotating within a ...
Most modern meters combine a venturi flow rate meter, with a gamma densitometer, and some meters have additional measurements for water salinity. The meter measures the flow rates at line pressures, which are typically orders of magnitude greater than atmospheric pressure, but the meter must report the oil and gas volumes at standard ...
A spoolbase is a shore-based facility used to facilitate continuous pipe laying for offshore oil and gas production. [1] The facility allows the welding of single or double joints (40' or 80') of steel pipe of 4" to 18" diameter, into predetermined lengths for spooling onto a reel lay vessel.
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