Home>API standards>ANSI API St 619-2010 pdf free download

ANSI API St 619-2010 pdf free download

ANSI API St 619-2010 pdf free download.Rotary-type Positive Displacement Compressors for Petroleum, Petrochemical and Natural Gas Industries.
3.54 thermal relief valve valve for relieving pressure caused by thermal expansion of liquid within a closed volume 3.55 trip speed rotational speed of the power-input rotor at which the independent emergency overspeed system operates to shut down a prime mover NOTE For the purposes of this part of ISO 10440, the trip speed of alternating-current electric motors, except variable- frequency drives, is the speed corresponding to the synchronous speed of the motor at maximum supply frequency. 3.56 unit responsibility responsibility for coordinating the technical aspects of the equipment and all auxiliary systems included in the scope of the order, including responsibility for reviewing such factors as the power requirements, speed, rotation, general arrangement, couplings, dynamics, noise, lubrication, sealing system, material test reports, instrumentation, piping, conformance to specifications and testing of components 3.57 vendor supplier agency that supplies the equipment NOTE The vendor can be the manufacturer of the equipment or the manufacturer’s agent and normally is responsible for service support. 3.58 witnessed inspection witnessed test inspection or test where the purchaser is notified of the timing of the inspection or test and a hold is placed on the inspection or test until the purchaser or his representative is in attendance 4 General 4.1 Pressure design code ? The pressure design code shall be specified or agreed by the purchaser. Pressure components shall comply with the pressure design code and the supplemental requirements in this part of ISO 10440. 4.2 Unit responsibility The vendor who has unit responsibility shall ensure that all subvendors comply with the requirements of this part of ISO 10440. 4.3 Units of measurement ? The purchaser shall specify whether data, drawings, hardware (including fasteners) and equipment supplied for this part of ISO 10440 shall use the SI or USC units.
5.1.3 The purchaser shall specify the equipment’s normal operating point. ? 5.1.4 The purchaser shall specify all other operating points, including start-up conditions, and shall indicate the certified operating point. ? 5.1.5 The purchaser shall specify the settle-out pressure. In the event that this pressure is not available at the time of inquiry, the normal discharge pressure shall be assumed. NOTE If the actual settle-out pressure is higher than the assumed pressure, the seal system, drive-train components, relief valves and piping system can be adversely affected. 5.1.6 Equipment driven by induction motors shall be rated at the actual motor speed for the rated load condition. 5.1.7 Equipment shall be designed to run, without damage, at the relief-valve set pressure, specified maximum differential pressure and trip speed (see 5.1.12) simultaneously. NOTE There can be insufficient driver power to operate under these conditions. For machines operating with variable suction and discharge-pressure levels, maximum allowable temperature can occur before maximum allowable pressure or maximum allowable differential pressure occurs. In such cases, the manufacturer and the purchaser should jointly consider and apply suitable safeguarding controls to avoid any damage. Controls may include but are not limited to discharge temperature or differential pressure.
The vendor shall notify the purchaser if the criteria for minimum temperature rise and velocity over heat-exchange surfaces result in a conflict. The criterion for velocity over heat-exchange surfaces is intended to minimize water- side fouling; the criterion for minimum temperature rise is intended to minimize the use of cooling water. If such a conflict exists, the purchaser shall approve the final selection. 5.1.9 The arrangement of the equipment, including piping and auxiliaries, shall be developed jointly by the purchaser and the vendor. The arrangement shall provide adequate clearance areas and safe access for operation and maintenance. 5.1.10 All equipment shall be designed to permit rapid and economical maintenance. Major parts, such as casing components and bearing housings, shall be designed and manufactured to ensure accurate alignment on reassembly. This can be accomplished by the use of shouldering, cylindrical dowels or keys.

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