Synoptic Guide to ASME Codes

2001 ASME Boiler and Pressure Vessel Code Section I Rules for construction of power boilers Section II Materials and Specifications Part A Part B Part C Part D Section III Ferrous materials specification Non-ferrous materials specifications Specifications for welding rods, electrodes, and filler metals Properties Rules for construction of nuclear power plant components1 Subsection NCA: General requirements for Division 1 and Division 2 Division 1 Steel components (vessel, storage tanks, pumps, piping systems, valves, core support structures, and supports for use at NPP) Subsection NB: Class 1 components (within the primary pressure boundary) Subsection NC: Class 2 components Subsection ND: Class 3 components Subsection NE: Class MC components Subsection NF: Supports Subsection NG: Core support structures Subsection NH: Class 1 components in elevated temperature service Division 2 Division 3 Concrete reactor vessels and concrete containment vessels Spent fuel storage canisters2 and spent fuel transportation containment vessels and their construction Section IIV: Guidelines for care of power boilers Section IIV: Rules for construction of pressure vessels Division 1 Division 2 Division 3 1 2 Steel components (vessel, storage tanks, pumps, piping systems, valves, core support structures, and supports for use at NPP) Alternative rules Alternative rules for construction of high pressure vessels limited to new constructions not published yet 1 How to go around the ASME code: Nuclear Power Plant Component Section III of ASME Code Steel vessel, storage tanks, pumps, piping systems, valves, core support structures, and supports for use at NPP Concrete reactor vessels and concrete containment vessels Spent fuel storage canisters and spent fuel transportation containment vessels and their construction Division 1 Division 2 Division 3 Is component within the reactor vessel (pressure boundary)? Yes The component is Class 1 The component is Class 2/3 Is its temperature above 700800°F? Subsection NC/ND Yes Subsection NH - No No Subsection NB Subsection NH contains four most-commonly used materials: 304SS, 316SS, 21/4Cr-1Mo, and alloy 800H. Division 1 also contains rules for supports, core supports, valves, etc. (not depicted on the diagram) 2 Material Section II of ASME Code Specifications for welding rods, electrodes, and filler metals Specifications Ferrous Non-ferrous Part A (II-A) Part B (II-B) Properties Part D (II-D) Part C (II-C) Subpart 1 Stress tables Table 1 Maximum Allowable Stress Values S Section I; Section III, Class 2 and 3; Section VIII, Division 1 Table 2 Design Stress Intensity Values Sm Section III, Class 1; Section VIII, Division 2 Tables 3 and 4 provide bolting information 3 Subpart 2 Physical properties tables Tables U and Y provide Tensile Strength and Yield Strength values Subpart 3 Components under external pressure Thermal expansion Thermal conductivity Thermal diffusivity Moduli of elasticity