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New Developments in High Productivity Cladding Process and in LNG application.

Picture for New Developments in High Productivity Cladding Process and in LNG application.
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Esab is always committed to technological innovations to support its customers in improving productivity and quality in their production units. This high focus has recently brought to the market an innovative cladding solution.
It is about the Integrated Cold Electrode for SAW process, launched in 2012 for joining application only. However, taking the benefits of its high flexibility and of the continuous development around it, it is now also possible to use it for cladding applications. It delivers the required weld deposit chemistry in a single layer solution by combining different wire grades with very low dilution.
Esab also has a long experience in LNG application, where a dedicated flux is well known all over the world. It has been designed some years ago to reduce crack susceptibility when NiCrMo wires are used to weld 9%Ni plates.

Product Number: MPWT19-15283
Author: Torchiana ing. Paolo
Publication Date: 2019
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Corrosion Protection in Amine Treating Units

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Severe corrosion and cracking problems in Amine units and associated plants have been documented extensively. Mitigating these issues has had a significant economic impact in the oil and gas refining industries where this equipment is used to capture acid gases, such as CO2 and H2S. Currently, expensive austenitic stainless steels and other corrosion resistant alloys are being utilised to control these corrosion issues with varying degrees of success.
In this paper, the use of advanced cold applied liquid coatings, as an alternative solution to expensive alloys, are examined. In particular, the performance of a specific coating is considered (under a rigorous testing regime) in environments containing the amines MDEA and DGA with combinations of sour gases. The permeation properties of the coating were also examined by conducting a six month cold wall test using demineralised water at 150oC. It is found that this coating offers excellent resistance even when the testing environment respectively contains 38.8% H2S at a temperature and pressure of 150oC and 1000psi. Finally, some case studies are discussed which provide verification to the experimental results obtained.
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98614 EXTERNAL CORROSION ASSESSMENT IN A LNG PIPELINE

Product Number: 51300-98614-SG
ISBN: 98614 1998 CP
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Corrosion Control of Acid Flare Lines at Gas Treatment Facility

Product Number: MPWT19-15242
Author: Ibrahim Albrahim, Ricardo Costa, Jehad Al-Aithan, Maher Al-Abdullatif, Abdulaziz Al- Tijani
Publication Date: 2019
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In any operating facility, the integrity of flare or relief lines should always be closely maintained, as it is one of the most important safeguards during plant upsets or emergency conditions. The most common damage mechanism in acid flare lines is acid gas dew point corrosion”. Corrosion in such systems is often dependent on fluid stagnation, especially in the presence of acidic water, during idle conditions.
The intent of this paper is to shed light on the efforts done in a gas treatment facility to identify different root causes that impacted or accelerated Acid Gas Dew Point Corrosion. These included design deficiencies, equipment integrity, and process challenges. Moreover, the paper provides findings and recommendations to avoid the occurrence of similar events in acid flare lines.
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