API St 672:2004(R2010) pdf download

12-19-2022 comment

API St 672:2004(R2010) pdf download.Packaged, Integrally Geared Centrifugal Air Compressors for Petroleum, Chemical, and Gas Industry Services
3 Definition of Terms
Terms used in this standard are defined in 3.1 – 3.36. 3.1 alarm point : A preset value of a parameter at which an alarm is actuated to warn of a condition that requires corrective action. 3.2 axially split: A joint that is parallel to the shaft centerline. 3.3 bearing housing: All bearing enclosures, including the gear casing. 3.4 critical speed: A shaft rotational speed at which the rotor-bearing-support system is in a state of resonance. 3.5 delivered flow: The flow rate determined at the compressor discharge or after the discharge of the aftercooler when included in the vendor scope. Note: When the flow is measured before the compressor inlet, it must be adjusted for the effects of aftercooler pressure drop, compressor seal losses, and interstage condensate removal. 3.6 design: A term that may be used by the equipment manufacturer to describe various parameters such as design power, design pressure, design temperature, or design speed. Note: This terminology should be used only by the equipment manufacturer and not in the purchaser’s specifications. 3.7 gear wheel (bull gear): The low-speed rotor of a gear set. 3.8 informative element: Describes part of the standard which is provided for information and is intended to assist in the understanding or use of the standard. Compliance with an informative part of the standard is not mandatory. Note: An Annex may be informative or normative as indicated. 3.9 inlet volume flow: The flow rate expressed in volume flow units at the conditions of pressure, temperature, compressibil- ity and air moisture content, at the compressor inlet connection. 3.10 local: The location of a device mounted on or near the equipment or console. 3.11 material certificate of compliance: A document by which the vendor certifies that the material represented has been produced and tested in accordance with the requirements of the basic material specification shown on the certificate.
5 Requirements
5.1 UNITS OF MEASUREMENT The purchaser will specify whether data, drawings, hardware (including fasteners), and equipment supplied to this standard shall use the SI or US Customary system of measurements. 5.2 STATUTORY REQUIREMENTS The purchaser and the vendor shall mutually determine the measures that must be taken to comply with any government codes, regulatory, ordinances, or rules that are applicable to the equipment. 5.3 ALTERNATIVE DESIGNS The vendor may offer alternative designs for purchaser’s consideration. 5.4 CONFLICTING REQUIREMENTS In case of conflict between this standard and the inquiry, the inquiry shall govern. At the time of the order, the order shall govern.

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