API RP 574 - Inspection Practices for Piping System Components

Last update: Jan 16, 2017

API RP 574, Inspection Practices for Piping System Components, is a recommended practice developed and published by the American Petroleum Institute (API) that discusses inspection practices for piping, tubing, valves (other than control valves), and fittings used in petroleum refineries and chemical plants. In order to aid inspectors in fulfilling their role implementing API 570, this document describes common piping components, valve types, pipe joining methods, inspection planning processes, inspection intervals and techniques, and types of records.

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