Design formulas and calculation procedure for the design of fixed tubesheets of shell and tube heat exchangers are included in Appendix AA—Nonmandatory of ASME Boiler and Pressure Vessel Code, Section VIII, Division 1. To minimize the number of calculations, charts are provided as part of the design procedure. This article provides alternate charts for certain parameters and the original version of the charts are extended for larger values of tubesheet design parameter. Numerical values are given in tabular form for certain functions used in plotting the design charts. This will help to do design calculations without referring to the charts.

1.
ASME Boiler and Pressure Vessel Code, 1992, Section VIII, Division 1, Appendix AA—Nonmandatory, New York, NY, pp. 587–601.
2.
Singh, K. P., and Soler, A. I., 1984, Mechanical Design of Heat Exchangers and Pressure Vessel Components, Arcturus Publishers, Cherry Hill, NJ, Chaps. 8 and 9.
3.
Soler, A. I., Caldwell, S. M., and Singh, K. P., 1985, “Tubesheet Analysis— A Proposed ASME Design Procedure,” Proceedings of ASME, Thermal/Mechanical Heat Exchanger Design—Karl Gardner Memorial Session, eds., K. P. Singh, and S. M. Shenkman, pp. 93–101.
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