1.1 This practice describes acoustic emission (AE) examination of steam piping during their normal operation. 1.2 The purpose of AE examination is to detect, locate, and characterize AE sources active during piping operation. 1.3 When proper methods of data acquisition and analysis are developed and criteria are elaborated, AE data measured during piping examination can be used for identification and quantitative or qualitative assessment of flaw indications. AE data may also be used for detection and evaluation of piping issues or operational conditions or both that may affect the structural integrity of the piping system in the future. 1.4 This practice is applicable to steam piping, including, but not limited to, typical main steam, hot reheat, and/or cold reheat piping systems of power plants and steam lines in petrochemical plants. 1.5 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
This examination is used to determine if there are active growing defects within steam or high-energy piping in power plants.
Keywordsacoustic emission; steam piping; main steam piping; hot reheat piping; cpld reheat piping
The title and scope are in draft form and are under development within this ASTM Committee.Back to Top
Draft Under Development