Engineering Review of Tubesheet / Shell for a Replacement Steam Generator

O’Donnell Consulting performed a third party engineering review of the head/ divider plate/ tubesheet/ shell complex for the replacement steam generators that were being manufactured for Baltimore Gas & Electric.

The review included the calculation of effective elastic and plastic material properties to be used in representing the perforated tubesheet. This was modeled as an equivalent of solid material. The analysis determined plastic collapse of the head/ divider plate/ tubesheet/ shell complex, under the following conditions: (i) maximum divider plate strain under hydrotest conditions (ii) estimate of the maximum elastic stress intensity range for cyclic loading, and (iii) shakedown analysis.

In addition to the third party review of the B&W analysis, OCE performed efficient Primary Stress analyses of the BG&E steam generators for design and hydrostatic test conditions using elastic-plastic analyses. 

The results showed that the design met the Primary Stress Allowables of the ASME Code, Section III, Subsection NB.

O’Donnell Consulting Engineers Performs Engineering Design, Analysis and Troubleshooting on equipment for Various Industries including Power Generation.