1. ASME B31.1-2001, “ASME Code for Pressure Piping” 2001, p. 222.
2. Damage Mechanisms and Life Assessment of High-Temperature Components;Viswanathan,1995
3. British Standard PD6525, “Elevated temperature properties for steels for pressure vessels” 1990.
4. The creep of steels working party of the Institution of Mechanical Engineers, “High Temperature Design Data for Ferritic Pressure Vessel Steels”, London 1983.