1. Section VIII division I, appendix 2;Boiler,2007
2. Sicherheitstechnische Regel des KTA, Teil: Auslegung, Konstruktion und Berchnung, Regeladerungsentwurf;KemtecllIlischer AIlsschu β (KTA),1995
3. Unfired pressure vessels-part 3: design, Annex C: method based on stress categories;EN13445–3,2002
4. R5. Assessment procedure for the high temperature response of structures;Nucl Electr Plc,1990
5. Design rules for class 1 equipment RCC-MR codes, revision,2002