1. R6, Revision 4: Assessment of the Integrity of Structures Containing Defects Including Amendments 1–7,2009
2. Guide to Methods for Assessing the Acceptability of Flaws in Metallic Structures, Incorporating Amendment 1;BS7910,2005
3. Fitness-for-Service;API 579-1/ASME FFS-1,2007
4. FITNET Fitness for Service Procedure,2008