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API STD 676:2009 pdf download

API STD 676:2009 pdf download.Positive Displacement Pumps—Rotary.
certified material test report
Certified report documenting the actual chemical composition and/or physical properties of critical materials.
datum elevation
Elevation to which values of NPSH are referred (concrete foundation or steel structure to which the baseplate is attached); also see paragraph defining NPSH (see 3.38).
depressurization valve
Valve, external to the MPP, used to relieve the gas pressure within the MPP package to a blow-down system or flare. NOTE Also known as a blow-down valve.
Manufacturer’s calculated parameter.
NOTE A term used by the equipment manufacturer to describe various parameters such as design power, design pressure, design temperature, or design speed. It is not intended for the purchaser to use this term.
differential pressure
Change in energy of the pumped liquid due to its pressure change in the pump. Typically, the discharge pressure minus the suction pressure.
discharge pressure
Energy of the pumped liquid due to its pressure as measured immediately downstream of the pump discharge flange.
Volume transferred from the suction to discharge per revolution of the rotor(s). In pumps incorporating two or more rotors operating at different speeds, the displacement is the volume transferred per revolution of the driving rotor. Displacement depends only on the physical dimensions of the pumping elements.
drive train components
Item of the equipment used in series to drive the pump (e.g. motor, gear, turbine, engine, fluid drive, clutch).
fail safe
System which will cause the equipment to revert to a permanently safe condition (shutdown and/or depressurized) in the event of a component failure or failure of the energy supply to the system.
flammable liquid
Liquid that has a closed-cup flash point below 38 °C (100 °F), as determined by recommended test procedures and apparatus.
NOTE Suitable test procedures are those set forth in NFPA 3.
gas liquid ratio
Ratio of the volume of gas to the volume of total liquid (oil and water only) at pump suction temperature and pressure.
gas oil ratio
Ratio of gas in a well stream expressed in standard cubic meters of gas per cubic meter of oil, Nm3/m3 in SI units or standard cubic feet of gas per barrel of oil, ft3/bbl in USC units.
gas volume fraction
Ratio of volume of gas to that of the total volume of the fluid (oil, water, and gas) at pump suction temperature and pressure, the fraction being expressed as a percentage.
gauge board
Bracket or plate used to support and display gauges, switches, and other instruments.
NOTE A gauge board is open and not enclosed.
hold-down bolt mounting bolt
Bolt holding the equipment to the baseplate.
hydrostatic test pressure Static test pressure used for leak testing.
NOTE Depending upon pump type, areas or regions of the pump subject to suction pressure may be hydrotested at a lower pressure than regions subject to discharge pressure.
inspection and test plan
Single project-specific document used with extended scope for heavy duty pumps in complex packages to consolidate all inspection and test elements, the criteria required to be met, and the roles and responsibilities.
Position of devices mounted on or near the equipment or console.
maximum allowable casing pressure
Maximum pressure for which the manufacturer has designed the pressure-containment components at the specified operating temperature.
maximum allowable fluid temperature
Maximum continuous fluid temperature for which the manufacturer has designed the equipment (or any part to which the term is referred) when handling the specified fluid at the specified maximum operating pressure.
maximum allowable suction pressure
Maximum continuous allowable pressure of the suction regions of the pump.
NOTE MASP may be limited by the design of the suction region(s) of the pump, or, limited by the dynamic sealing pressure rating of mechanical seal(s).


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