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Controlled Humidity Protection (CHP) reduces corrosion d/t high relative humidity (exceeding 40%). Addition of the vapor phase corrosion inhibitors to the CHP provide a more effective corrosion protection. A dry air system can will not be able to prevent corrosion.
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There are advantages to Post-tensioned (PT) concrete construction compared to conventional reinforcement. However, corrosion caused tendon failures have recently been reported d/t chemically and/or physically deficient grout. A predictive model has been developed that projects onset and rate of wire and strand fractures.
The concept of using physics-based models for corrosion monitoring is still new although corrosion monitoring by use of hardware coupons and probes is well recognized. This paper describes the application in downstream related to crude unit overhead and demonstrates how the monitoring concept can be used and its benefits.
This paper will describe a multi-channel corrosion and stray-current monitoring system and the design consideration/philosophy used when determining the measurement locations throughout the system and the challenges presented and overcome. Follows NACE Corrosion 2012 (paper C2012-01727).
Background on High Temperature Hydrogen Attack (HTHA). Some current developments in HTHA inspection and mitigation. How several refiners have instituted an HTHA risk management plan for their refineries and the challenges and pitfalls they have encountered
This paper will provide an overview of activities related to the nondestructive examination of dry storage casks for spent nuclear fuel. The aim is to help ensure their integrity over extended interim storage periods.
The sour model had been previously developed to predict localized internal pitting corrosion of carbon steel. This model included the effects of carbon dioxide (CO2), crude oil, temperature, pressure, flow, sulfur, sulfates, bicarbonates, chlorides and microbiologically influenced corrosion (MIC). The paper discusses field use, merits, precautions and parameterization in using the model.
The aim of this work is to analyze the role of corrosion management in prevention of corrosion accidents related primarily to safety of personnel and the environment. This is achieved by anti-corrosion measures, corrosion monitoring, regular inspection, study of each accident, implementation of meetings, publications, education, and knowledge transfer.
The corrosion management (CM) process could mitigate asset corrosion issues, post-commissioning. Prerequisites are necessary. • Human resources competency •Teamwork and managerial support. This paper looks into how the aforementioned parameters could influence CM implementation and how the whole process could be further improved.
This study collected and analyzed field data to validate the probabilistic model developed previously for predicting internal corrosion threats resulting from condensed water from nominally dry natural gas.
This paper presents the latest laboratory results on iron sulfide dissolver evaluation. The recently developed dissolvers were studied for their dissolving powers using iron sulfide scale solids and the corrosion rate to mild steel at elevated temperature. Based on these results, the technical gaps and future developments for iron sulfide dissolvers are discussed.
A Corrosion Control Plan was developed for a Debutanizer Overhead System, which had suffered from high corrosion rates and multiple leaks. This paper will outline the efforts undertaken and conclude with the Corrosion Control Plan, developed to enhance reliability and availability of the unit and mitigate corrosion damage.