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Article
Publication date: 1 May 1987

Michael A. Clarke

Corrosion monitoring techniques fall broadly into two categories: those which provide simple numeric data for control purposes, and those which offer a spectrum of…

Abstract

Corrosion monitoring techniques fall broadly into two categories: those which provide simple numeric data for control purposes, and those which offer a spectrum of information for diagnostic purposes. Corrosion monitoring can be carried out directly at locations susceptible to corrosion, or indirectly under conditions simulating susceptible but inaccessible points. The interpretation of the data can reflect the purpose of monitoring at the particular location. A consistent form of presentation, and comparative tabulation including statistical analysis can greatly facilitate correlation and trend spotting. Broad spectrum techniques may give an early indication of new problems. An effective internal corrosion monitoring programme can make a major contribution towards the control of plant operating costs.

Details

Anti-Corrosion Methods and Materials, vol. 34 no. 5
Type: Research Article
ISSN: 0003-5599

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Article
Publication date: 3 May 2016

Mingming Xiao, Shilong Zhang, Yanbing Tang, Zhongmao Lin and Jiahong Chen

This study aims to explore the effect of corrosion monitoring technology for ensuring concrete structure safety.

Abstract

Purpose

This study aims to explore the effect of corrosion monitoring technology for ensuring concrete structure safety.

Design/methodology/approach

A new monitoring system scheme with unattended operation to evaluate the durability of concrete structures is presented, which includes four components, namely, a multi-function embedded sensor, a microprocessor data collecting module, a system data analysis and storage module, and a remote server module.

Findings

The system carries out monitoring of chloride ion concentration and pH in concrete, corrosion current density and of the self-corrosion potential of the reinforcing steel bar.

Originality/value

This system provides real-time, online, lossless monitoring for concrete structures.

Details

Anti-Corrosion Methods and Materials, vol. 63 no. 3
Type: Research Article
ISSN: 0003-5599

Keywords

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Article
Publication date: 2 November 2015

Juliusz Orlikowski, Kazimierz Darowicki, Agata Jazdzewska and Magdalena Jarzynka

The purpose of this paper is to implement the corrosion protection method for steel pipes used in a municipal water-pipe network. Results of an inhibitor protection system…

Abstract

Purpose

The purpose of this paper is to implement the corrosion protection method for steel pipes used in a municipal water-pipe network. Results of an inhibitor protection system installed on the system are presented. Inhibitor protection was required due to the high corrosivity of the water collected by a surface intake, which had resulted in a large number of failures and low water quality, due to the presence of corrosion products.

Design/methodology/approach

To assess the effectiveness of protection and to control the optimum dose of the inhibitor dispensed, an automatic system of corrosion monitoring was used, together with an assessment of water corrosiveness based on measurements of physical and chemical properties of water.

Findings

Calcium polyphosphate, in the role of a non-toxic corrosion inhibitor, showed significant effectiveness as a anticorrosive and its results were fully noticeable after several years following the commencement of protection. Corrosion monitoring has shown that the effectiveness of inhibitor protection is highest in the summer season, when the water is characterised as being in its most corrosive form.

Originality/value

A reduction in the corrosion rate improves the quality of water and its chemical parameters fall within the standard range for water intended for consumption. The corrosion inhibitor action accelerates the formation of a layer limiting the corrosion rate. In this case, stable corrosion rates may be obtained after only the first year. In terms of the designing systems for monitoring corrosion in water systems, this is very important information as reliable results can be obtained for a long period after the launch of the system.

Details

Anti-Corrosion Methods and Materials, vol. 62 no. 6
Type: Research Article
ISSN: 0003-5599

Keywords

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Article
Publication date: 1 March 1987

Keith Eagles

Corrosion is now becoming more widely recognised as a menace to industrial plant and plant components. Corrosion which occurs inside process plant may often be difficult…

Abstract

Corrosion is now becoming more widely recognised as a menace to industrial plant and plant components. Corrosion which occurs inside process plant may often be difficult to detect until deterioration is well advanced. Such corrosion can destroy equipment, contaminate products and shut down production if it is not identified at an early stage and monitored. This fact was recognised by the Hoare Committee, reporting on Corrosion Protection, as long ago as 1972. The Hoare Committee concluded that the annual cost due to corrosion in the U.K. amounted to some 3% of the Gross National Product, but that savings of one‐third were possible by better or wider use of existing corrosion protection and monitoring techniques.

Details

Anti-Corrosion Methods and Materials, vol. 34 no. 3
Type: Research Article
ISSN: 0003-5599

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Article
Publication date: 27 November 2018

Zhichao Qiu, Chunming Xiong, Zhengrong Ye, Ran Yi and Na Zhang

The purpose of this paper is to solve the tubing corrosion problem of B Block on the Right Bank of Amu Darya river sour gas field.

Abstract

Purpose

The purpose of this paper is to solve the tubing corrosion problem of B Block on the Right Bank of Amu Darya river sour gas field.

Design/methodology/approach

By using four-point-bending method, the tubing’s ability to resist sulfide-stress cracking was tested. Simulating the wellbore corrosive environment, the corrosion inhibitor which was suitable for gas filed had been screened. According to the characteristic of Amu Darya river gas field, the corrosion monitor system had been designed.

Findings

From the feedback of wellbore corrosion monitor result, the corrosion rate was lower than 0.076 mm/a.

Originality/value

This anti-corrosion technique provides security for the development of gas field.

Details

Anti-Corrosion Methods and Materials, vol. 66 no. 1
Type: Research Article
ISSN: 0003-5599

Keywords

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Article
Publication date: 28 June 2011

Guofu Qiao, Huigang Xiao and Guodong Sun

The purpose of this paper is to present a novel five‐electrode electrochemical corrosion sensor. Health degradation by the corrosion of steel in civil engineering is a…

Abstract

Purpose

The purpose of this paper is to present a novel five‐electrode electrochemical corrosion sensor. Health degradation by the corrosion of steel in civil engineering is a persistent problem. Structural health monitoring (SHM) techniques, including embedded sensors, can greatly improve the quantification of the steel corrosion information, which can lead to promote assessments of structural safety and serviceability. To integrate the corrosion monitoring system in future, the corrosion sensor and the monitoring methods have been explored here in advance. Also, the corrosion monitoring system has been applied preliminarily in the investigation of reinforcing concrete (RC) beams.

Design/methodology/approach

First, a novel five‐electrode electrochemical corrosion sensor has been developed as the hardware to provide the platform for corrosion monitoring methods. Second, half‐cell potential of the RC beams has been measured before and after corrosion. Third, galvanostatic step method has been used to excite the steel‐concrete system, and the transient response of the system has been obtained and analyzed. Finally, wavelet transform algorithm has been established to analyze the electrochemical noise (EN) data of the steel bars in RC beams.

Findings

The results show that the corrosion sensor can be used effectively as the hardware to support the electrochemical measuring techniques. Much valuable information which is extracted by analyzing the potential response to the galvanostatic pulse excitation can be applied to determine the general corrosion state of the reinforcing steel. For pitting corrosion, the energy distribution plot of EN can be adopted as a benchmark method to identify the presence of the corrosion pit.

Originality/value

The paper provides the key techniques for a SHM system to realize corrosion monitoring of large‐scale RC structures in the future.

Details

Sensor Review, vol. 31 no. 3
Type: Research Article
ISSN: 0260-2288

Keywords

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Article
Publication date: 1 May 1992

C.O. Emenike

The increasing incidence of corrosion induced failures query the efficiency of corrosion prevention measures and/or their monitoring techniques. Of concern too, is the…

Abstract

The increasing incidence of corrosion induced failures query the efficiency of corrosion prevention measures and/or their monitoring techniques. Of concern too, is the phenomenon of twelve o'clock corrosion and the subsequent rupture. This indicated that the inhibitor was not protecting the upper surface of the pipe wall which could be possibly averted by batching a slug of inhibitor solution ahead of a pig or between pigs on regular (e.g. monthly) basis.

Details

Anti-Corrosion Methods and Materials, vol. 39 no. 5
Type: Research Article
ISSN: 0003-5599

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Article
Publication date: 1 June 1995

Roe D. Strømmen, Harald Horn, Gaute Moldestad, John Kristian Ramsvik and Kjell R. Wold

Corrosion monitoring and inspection is commonly done in industry, for a wide range of applications:

Abstract

Corrosion monitoring and inspection is commonly done in industry, for a wide range of applications:

Details

Anti-Corrosion Methods and Materials, vol. 42 no. 6
Type: Research Article
ISSN: 0003-5599

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Article
Publication date: 18 January 2021

Liang Zhao, Wen Tao, Guangwen Wang, Lida Wang and Guichang Liu

The paper aims to develop an intelligent anti-corrosion expert system based on browser/server (B/S) architecture to realize an intelligent corrosion management system.

Abstract

Purpose

The paper aims to develop an intelligent anti-corrosion expert system based on browser/server (B/S) architecture to realize an intelligent corrosion management system.

Design/methodology/approach

The system is based on Java EE technology platform and model view controller (MVC) three-tier architecture development model. The authors used an extended three-dimensional interpolation model to predict corrosion rate, and the model is verified by cross-validation method. Additionally, MySQL is used to realize comprehensive data management.

Findings

The proposed anti-corrosion system thoroughly considers a full use of corrosion data, relevant corrosion prediction and efficient corrosion management in one system. Therefore, this system can achieve an accurate prediction of corrosion rate, risk evaluation, risk alert and expert suggestion for equipment in petrochemical plants.

Originality/value

Collectively, this present study has important ramifications for the more efficient and scientific management of corrosion data in enterprises and experts’ guidance in controlling corrosion status. At the same time, the digital management of corrosion data can provide a data support for related theoretical researches in corrosion field, and the intelligent system also offers examples in other fields to improve system by adding intelligence means.

Details

Anti-Corrosion Methods and Materials, vol. 68 no. 1
Type: Research Article
ISSN: 0003-5599

Keywords

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Article
Publication date: 1 October 1999

G. Subramanian, S. Palraj and T.M. Balasubramanian

The galvanic corrosion interactions of zinc and SS.304 have been studied in a tropical marine environment over a period of 427 days, under different area ratios. The…

Abstract

The galvanic corrosion interactions of zinc and SS.304 have been studied in a tropical marine environment over a period of 427 days, under different area ratios. The galvanic interaction of zinc and SS.304 are highlighted in terms of the corrosion rate of zinc or SS.304 resulting from galvanic coupling, and the susceptibility of zinc to pitting due to galvanic corrosion. The galvanic potential and galvanic current of the system are monitored. The corrosion products at the interface of the bimetallic contacts are analysed with XRD technique and the pitting/grooving on zinc resulting from galvanic corrosion is measured using a high resolution microscope. The weathering parameters and environmental pollutants are monitored to give an insight into the possible means of favouring the galvanic interactions. The results of the study are discussed in the light of the above factors towards predicting a mechanism for the galvanic interactions of zinc and SS.304.

Details

Anti-Corrosion Methods and Materials, vol. 46 no. 5
Type: Research Article
ISSN: 0003-5599

Keywords

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