There are numerous standard ASTM test methods for determining the relative resistance of materials or surface treatments to impingement, dry sliding wear, and wet reciprocating wear, however, there is no established correlation between a material’s mechanical properties and its wear resistance. The relationship between such wear tests and actual wear performance in equipment is unclear. The objective of this project is to develop approaches to predict wear rates for a range of materials frequently ...
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PSA (pressure swing adsorption) pressure vessels are often used in the purification of hydrogen after syngas production. These vessels are manufactured from carbon steel and are welded in accordance to design codes and standards. Due to fluctuations in pressure, these vessels are usually affected by fatigue damage which can be accelerated due to exposure to hydrogen. The purpose of this project is to establish a relevant materials database for PSA steel in hydrogen that will be useful for predicting ...
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This project follows the completed project 356 which produced an analysis of the existing literature on this topic and guidance on an experimental plant to determine the remaining lifetime of components composed of Alloy 20Cr32Ni after aging at high process temperature. The objective of this project is to conduct an experimental evaluation of this alloy following aging in a process environment to determine remaining utility for further plant service.
A concise book on new design and construction, repairs, installation, and inspections for high temperature ceramic materials including castables, ceramic fiber, high temp refractory, rammed materials, anchor, linings and ferrule materials. Produce a text providing introductory discussions on high temperature ceramic materials (excluding electronics) in MTI Member facilities. Include general description, common installation methods, inspection recommendations applicable during installation and ...
Develop standard, critical and operational IOW templates/guidance for the most common chemical plants. The common chemical process IOW templates will be a MTI stand-alone product and/or serve as an addendum to API 584.
Produce a catalogue of a variety of NDE responses (ToFD, ,PAUT, TFM/FMC) with corresponding metallographic characterization of carbon steel and carbon 1/2 moly HTHA specimens. Focus will be on incipient damage and HTHA with inclusions ad weld defects and other inclusions.
The project proposes an investigation of stainless steels corrosion resistance to Pitting, Crevice and SCC resistance in temperatures above 90oC (194oF) and low chloride amounts. The aim is to complete the existing engineering diagrams defining the temperature-chloride content boundaries for these corrosion mechanisms.
Develop a Guideline that covers the basic degradation mechanism that can damage equipment and piping during plant construction, pre-commissioning. List the mitigation and prevention steps, be aware that these have changed with module fabrication in low cost countries and ban on many corrosion inhibitors due to environmental concerns. The MTI guideline should become an “industry standard” that can be shared with non-materials/corrosion engineers to avoid MIC failures. It should describe cases and ...
There are restrictions for in-service welding on carbon steel for external attachments used in alkaline service because cracking can occur with the residual stress contributed by welding when in contact with the process fluid. There is belief that in-service welding could be possible for these situations if the wall thickness is great enough so that the stress field due to welding does not reach the I.D. surface in contact with the process, and PWHT would not be required. The project objective ...
The objective of this project is to characterize the metallurgical condition and mechanical properties of AISI 304 stainless steel that has been aged continuously at 430 degrees C. for about 410,000 hours.
Combined with project 422 (Supplementary Specifications for SMRs and Ethylene Furnace Coil Materials)
AMPP SP0170 provides guidance on the sensitization temperature range for common stainless steel grades. There is evidence from observations made in operating plants that these current temperature ranges might be overly conservative. This project will focus on reevaluating the long-term minimum temperature limits for sensitization of chemically stabilized stainless steel grades, 321 and 347. The aim is to determine if a higher minimum sensitization temperature can be supported from recent technical ...
ASSET (Alloy Selection System for Elevated Temperature) is a powerful high temperature corrosion prediction program that was developed in a JIP with MTI, Shell and others with DOE funding in 2000-2005. Action is required to update the software and improve its functionalities so that it can continue to be of value to MTI members.
This project will search for a firm that is able to non-destructively detect titanium hydriding in plant equipment. Past MTI titanium hydride projects looked at one specific method with the aim to adapt the method to identify titanium hydriding. This project has a much broader perspective aiming to test all techniques that have the potential to detect titanium hydriding. Industry information suggests that a method already exists. A few companies indicate they can non-destructively detect titanium ...
Additive Manufacturing (AM) provides designers the ability to build parts directly from computer-aided design (CAD) files. Metal AM technology is rapidly maturing and offers a range of benefits to reduce cost, schedule and increase performance of Boiler and Pressure Vessel (BPV) systems. The impact to the BPV industry has been limited by the availability of standards. The project objective is to use this effort to validate the qualification for materials used in fabrication of BVP equipment. ...
Evaluation of Fiber Optic High Temperature Multiplexing Sensing Technologies for Continuous Metal Temperature Monitoring in CPI and Refinery Applications. Evaluate sapphire fiber optical technology with Fabry-Perot interferometer, Fiber Bragg Grating, Rayleigh Scattering-Based Sensors using annealed silica fiber, and other viable fiber optic technologies to make high temperature measurements suitable for CPI process operations. Evaluate methods of instrument installation on existing tubes/equipment ...
Study the corrosion behavior of bio-oil under low temperature conditions where carbon steel, low-alloy, and 3XX materials may or may not have acceptable corrosion rates. Additional work includes a surface corrosion study and report of Phase 0, Phase 1, and Phase 2 coupons.
No tool exist for predicting the corrosivity in the aqueous streams in renewable fuel processing units. The aqueous phase contains a combination of chemicals (CO, CO2, H2S, NH3 and HCl) which are all outside of the existing available models. The goal is to better understand the limits for corrosion resistant alloys under the aqueous conditions present in renewable fuel processing units
Phase 1 (MTI project #386) qualified an additive material manufacturing procedure using the Gas Metal Arc Directed Energy Deposition method (GMA-DED) and ER-2594 wire filler metal (equivalent to super duplex stainless steel UNS S32750) per the requirements of sections 1-4 and 6 in ASME Code Case and ASME Section IX, Part QW, Article VI suitable for equipment fabrication. The Phase 2 project objective is to use the results from Phase 1 to fabricate a small ASME vessel with a combination of wrought ...
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