ABSTRACT

In the preceding chapters, the design procedures for various components of pressure vessels were outlined. In this chapter, some typical design examples will be presented. Some of the designs are based on the use of formulas (closed-form mathematical expressions) derived in the earlier chapters for shells and nozzles. The others involve finite-element analyses and the use of the stress results to demonstrate adequacy for primary and secondary stresses. Two of the examples involve fatigue evaluation. The inelastic fatigue evaluation of steam generator nozzle has been carried out using the ASME Code and the so-called local strain approach commonly used in the aerospace and automotive industries. The specific design and analysis efforts include

1. Sizing of thickness for a pressure vessel 2. Reinforcement calculations for a nozzle

3. Fatigue evaluation for a nozzle for a reactor pressure vessel (elastic analysis)

4. Fatigue evaluation for a nozzle for a steam generator (inelastic analysis)

5. Structural evaluation of a reactor vessel support

12.2 Sizing of a pressure vessel The equations for cylindrical shells were presented in Chapter 5. The following equations have been used for designing a cylindrical shell as shown in Figure 12.1.