API STD 619-2010 pdf free download

API STD 619-2010 pdf free download.Rotary-type Positive Displacement Compressors for Petroleum, Petrochemical and Natural Gas Industries.
3.9 fail-safe system that causes 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 3.10 flooded screw compressor helical-lobe rotary compressor with a lubricant (compatible with the process gas) injected into the rotor area after the closed thread position of the rotor NOTE This lubricant helps seal rotor clearances and establishes an oil film between the rotors. One rotor drives the other in the absence of a timing gear. 3.11 gas/oil separator pressure-containing device, usually a vessel, used to separate entrained oil from the process gas 3.12 gauge board bracket or plate used to support and display gauges, switches and other instruments NOTE 1 A gauge board is open and not enclosed NOTE 2 A gauge board is not a panel. A panel is an enclosure. Refer to 3.31 for the definition of a panel. 3.13 general-purpose application application that is usually spared or is in non-critical service 3.14 hold-down bolts mounting bolts bolts holding the equipment to the mounting plate 3.15 hydrodynamic bearings bearings that use the principles of hydrodynamic lubrication, where bearing surfaces are oriented such that relative motion forms an oil wedge or wedges to support the load without shaft-to-bearing contact 3.16 inlet volume flow flow rate expressed in volume flow units at the conditions of pressure, temperature, compressibility and gas composition, including moisture content, at the compressor inlet flange NOTE Inlet volume flow is a specific example of actual volume flow. Actual volume flow is the volume flow at any particular location such as interstage or compressor discharge. Actual volume flow should not be used interchangeably with inlet volume flow.
3.18 maximum allowable differential pressure highest differential pressure that can be permitted in the compressor under the most severe operating conditions of minimum suction pressure and discharge pressure equal to the relief-valve setting 3.19 maximum allowable speed highest rotational speed of the power-input rotor at which the manufacturer’s design permits continuous operation 3.20 maximum allowable temperature maximum continuous 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 3.21 maximum allowable working pressure MAWP maximum continuous pressure 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 temperature 3.22 maximum continuous speed highest rotational speed of the power-input rotor at which the machine, as built and tested, is capable of continuous operation with the specified fluid at any of the specified operating conditions 3.23 maximum power highest power the compressor and any shaft-driven appurtenances require for any of the specified operating conditions, including the effect of any equipment (e.g. pulsation suppression devices, process piping, intercoolers, after-coolers and separators) furnished by the compressor vendor NOTE Deviations from the specified conditions, such as relief-valve set pressure, are excluded from maximum power. 3.24 maximum sealing pressure highest pressure at which the seals are required to seal during any specified static or operating condition and during start-up and shutdown 3.25 minimum allowable speed lowest rotational speed of the power-input rotor at which the manufacturer’s design permits continuous operation 3.26 minimum allowable temperature lowest temperature for which the manufacturer has designed the equipment or part thereof
3.30 owner final recipient of the equipment who may delegate another agent as the purchaser of the equipment 3.31 panel enclosure used to mount, display and protect gauges, switches and other instruments NOTE A panel is not a gauge board. A panel is enclosed and not open. Refer to 3.12 for the definition of a gauge board. 3.32 pocket-passing frequency frequency at which the gas is discharged from the rotor lobes into the discharge port NOTE Pocket-passing frequency, expressed in hertz, is calculated by multiplying the rotor rotational speed, expressed in revolutions per minute, by the number of lobes on that rotor and dividing the product by 60. 3.33 pressure casing composite of all stationary pressure-containing parts of the unit, including all nozzles and other attached parts 3.34 pressure design code recognized pressure vessel standard specified or agreed by the purchaser 3.35 purchaser agency that issues the order and specifications to the vendor NOTE The purchaser can be the owner of the plant in which the equipment is to be installed or the owner’s appointed agent.