Tech Memos

Internal technical memoranda covering process, mechanical, and metallurgical design practice — organized by the IPE-TM series.

IPE-TM-100 General InformationGeneral-purpose design guidance — round-off rules, design pressure & temperature, winterizing, MDMT, fuel equivalents. · 7 memos
IPE-TM-200 HeatersFired heater design, fuel systems, revamps, tube supports, and specification preparation. · 5 memos
IPE-TM-300 VesselsPressure vessel design — nozzles, internals, vacuum service, ASME Div 2, skirts, reactors, and Schedule A revamps. · 15 memos
IPE-TM-310 TanksAtmospheric storage tank selection for minimum emissions and oxygen contamination. · 1 memo
IPE-TM-320 FractionationColumn hydraulics, tray selection, feed location, dividing wall columns, bubble caps, and small-diameter column design. · 19 memos
IPE-TM-400 Heat ExchangersShell-and-tube, air-cooled, Packinox, thermosiphon reboilers, and revamp evaluations. · 11 memos
IPE-TM-500 Pumps & CompressorsCentrifugal pump sizing, dry gas and dual seals, compressor selection, fugitive emissions, and critical-service equipment. · 16 memos
IPE-TM-510 HydraulicsPump circuits, NPSH calculations, spillback hydraulics, compressor circuits, and equivalent-length guidelines. · 15 memos
IPE-TM-600 InstrumentsLevel indicators, thermowells, SIS implementation, control valve practices, and vent/purge systems. · 17 memos
IPE-TM-700 MetallurgyWet H₂S, PWHT, austenitic stainless protection, MSD guidelines, and trend curves for corrosion rates. · 7 memos
IPE-TM-807 Pressure Relief SystemsFractionator relief loads, PRV inlet piping, fire case, exchanger overpressure, and relief headers. · 9 memos
IPE-TM-810 PipingPipe size selection, flanges and gaskets, and general piping practice. · 3 memos
IPE-TM-900 Miscellaneous EquipmentProcess-unit steam generation, ejectors, and hot-oil system design. · 3 memos

© 2026 Inflection Point Engineering, LLC. All rights reserved. The content of this page — including calculation methods, reference data, written analysis, interactive tools, and source code — is the intellectual property of Inflection Point Engineering, LLC and is protected under applicable copyright, trademark, and trade secret laws. Unauthorized reproduction, redistribution, modification, or derivative use in whole or in part is prohibited without prior written consent.

Disclaimer. This material is provided for informational and educational purposes only and does not constitute professional engineering advice. Calculations, reference data, and methodologies are based on published standards and accepted engineering practice but are not a substitute for engineering judgment, site-specific analysis, or review by a licensed Professional Engineer. Inflection Point Engineering, LLC makes no warranties, express or implied, regarding the accuracy, completeness, or fitness for a particular purpose of any content presented here, and shall not be liable for any direct, indirect, incidental, or consequential damages arising from its use. Users assume all risk associated with applying this content to real-world design, operations, or decisions.