TEMA Eleventh Edition (Revision Tracker) : 2023

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The Eleventh Edition of the TEMA Standards was prepared by the Technical Committee of the Tubular ExchangerManufacturers Association. Sections have been added to provide direction concerning the design of one passfloating heads and Type-D high pressure channel closures. The Eleventh Edition introduces an Exchanger TypeSelection Guide which discusses the benefits and disadvantages of various types of exchangers and a section onInspection which has information concerning non-destructive examination techniques and recommendations fortheir use for shell and tube heat exchangers. This edition includes new appendices for Repairs and Alterations ofHeat Exchangers; for Clad and Overlay Construction; and for Installation, Operation, and Maintenance of Shell andTube Heat Exchangers. TEMA has modified the Heat Exchanger Specification Sheet to better define the designrequirements necessary to specify a heat exchanger. This Standard has been revised to include weld calculationsfor vertical support lugs, a clarification to the mitigation of erosion of the tube ends due to certain tube side flows, and a more detailed discussion concerning tube to tubesheet joints.

One of the main goals of the Eleventh Edition is to better present the TEMA Standards to all users. To do this,content has been expanded to include separate tables and graphics with metric units for more clarity and to provideunits that make practical sense for manufacturers.

Newly Added

• Exchanger Type Selection Guide which discusses the benefits and disadvantages of various types of exchangers
• Section on Inspection which has information concerning non-destructive examination techniques and recommendations for their use for shell and tube heat exchangers.
• Design of one pass floating heads
• Design of Type-D high pressure channel closures
• Weld calculations for vertical support lugs
• Appendix for Repairs and Alterations of Heat Exchangers
• Appendix for Clad and Overlay Construction
• Appendix for Installation, Operation, and Maintenance of Shell and Tube Heat Exchangers.

Updated

• Updated Heat Exchanger Specification Sheet to better define the design requirements necessary to specify a heat exchanger.
• US Customary and SI Units are provided for most requirements – a single system of units shall be used for all aspects of design and fabrication except where otherwise permitted
• Clarification to the mitigation of erosion of the tube ends due to certain tube side flows
• More detailed discussion concerning tube to tubesheet joints.