Industry Standards:

ASTM international approved standard ASTM E2906 / E2906M – 13


  • Standard Practice for Acoustic Pulse Reflectometry Examination of Tube Bundles


ASME standard


  • 2015 Boiler & Pressure Vessel codebook article 18, book V (five)

Independent third-party studies on APR:

WP5: Summarizing Evaluation of the APR-Technique

KINT Onderzoeksprojecten
Authors: ir. J.H.A.M. Heerings
APR Technology

Applicability of Acoustic Pulse Reflectometry to injector and heat exchanger tubes with typical manufacturing flaws

Salzgitter Mannesmann Forschung
Authors: Dr. O. Nemitz, Dr. E. Schuster 
Dolphin G3™ - APR Technology

Evaluation and Characterization of the APR Technology

Southwest Research Institute
Author: Erika C. Laiche

Dolphin G3™ - APR Technology

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Sound Tube Testing

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1431 GE Aalsmeer

The Netherlands

Tel. +31 20 2600126