1. Canadian Energy Pipeline Association, www.cepa.com/, Accessed September 2009.
2. Piping and pipeline assessment guide;Escoe,2006
3. Recommended practice for fitness for service;American Petroleum Institute,2000
4. British Standards Institute, BS 7910. Guide on methods for assessing the acceptability of flaws in metallic structures, BSI-10 2000.
5. Manual for determining the remaining strength of corroded pipelines;ASME B31G,1991