1. Guidelines and specifications for high-reliability fossil power plants, 2nd Edition — Best Practice Guideline for Manufacturing and Construction of Grade 91 Steel Components. Electric Power Research Institute (EPRI). (Final Report), June 2015.
2. ASME Boiler & Pressure Vessel Code - Section I: Rules for Construction of Power Boilers. The American Society of Mechanical Engineers, Edition 2013.
3. Performance of P91 Thick Section Welds under Steady and Cyclic Loading Conditions: Power Plant and Research Experience;Shibli,2002
4. In-service type IV cracking in a modified 9Cr (Grade 91) header. RWE npower;Brett,2005
5. Service Experience with Creep Enhanced Ferritic Steels in Power Plants in the Asia-Pacific Region,2015