Page 188 - CW E-Magazine (1-4-2025)

Special Report

table 4: A comparison of common corrosion monitoring systems
complexity ScAdA-Based System Satellite-Based System cell phone-Based System
High High Low
Advatages – Takes advantage of existing – Monitor CP system virtu- – Low installation cost
wireless system ally any time, anywhere in the – can easily be installed
– can take readings at any time world through the internet – can take readings at any time
– can control
Disadvantages – Signal path must be properly – Charges fee/reading /location – Cost of cell phone services
planned for adequate transmission – Line of site limitations – Cell phone signals are some-
signals must be line of site (LOS) times lost in certain locations
Signals are sometimes lost if there
are impediments to LOS
Remote monitoring threats, an integrity management sys- facturers Association of India
A real-time, online remote moni- tem is required. This includes a corro- (AMAI), Aug, 2018.
toring system consists of a sensor sion prevention strategywith CP that 4. Transportation of natural and other
network mounted in the pipeline com- incorporates the latest developments in gas by pipeline: Minimal Federal
bined with portable electronic hard- isolation and remote monitoring tech- Safety Standards (U.S. Code Federal
ware and diagnostic software. The nology. Even pipelines with upgraded Regulations, Title 49, Part 192).
sensor node consists of many basic metallurgy and coatings require such a 5. Transportation of Hazardous
parts such as: a sensing unit, a micro- strategy. Liquids by Pipeline(U.S. Code
controller, channel (transceiver), and Federal Regulations, Title 49,
battery (Fig. 13). concLuSIon Part 195).
The presence of atomic (nascent) 6. Mitigation of Internal Corro-
The remote corrosion monitoring hydrogen in a medium is extremely sion in Carbon Steel Gas Pipeline
systems employ many technologies: dangerous and can cause serious mechani- Systems(Canadian Association of
SCADA based systems; Satellite based cal damage to materials. It should Petroleum Producers).
systems; and Cell phone based sys- be prevented by taking remedial 7. Stern, M., ‘Principles of Cathodic
tems(9, 10). measures. Protection’, Symposium on Corro-
sion Fundamentals, University of
Impact of renewable feeds on Attack of hydrogen sulphide in Tennessee Press, 1956.
corrosion pipelines particularly in oil and gas 8. Chaudhary, R., ‘Fundamentals of
Renewable feeds can be more industry is very critical and catastrophic cathodic protection and its appli-
corrosive than hydrocarbon feeds as rupture of pipeline can lead to cation’, National Conference on
because of high-temperature fatty leakage of hydrocarbons causing fatal Total Corrosion Management,
acids and higher contaminant levels accidents and severe damage to the FICCI, June, 2008, New Delhi.
of H S and oxygenated compounds. environment. The prevention of this 9. N. Summers, ‘Remote Monitoring
2
Specialcorrosion preventionis re- catastrophe should be done by adopt- of Pipeline Cathodic Protection
quired for pipelines transporting such ing systematic asset integrity manage- Systems,’Petromin Pipeline, April-
feeds, including CP, corrosion inhibi- ment and carrying out quantitative June 2009.
tors, gaskets and seals, coatings, and risk analysis of the pipeline system. 10. Kumar, A., and Stephenson, L.D.,
construction materials. Alternating ‘Comparison of Wireless Tech-
between hydrocarbon and renewable rEFErEncES nologies for Remote Monitoring of
feeds can accelerate corrosion issues 1. Fontana, M.G., and Green, N.D., Cathodic Protection Systems,’ US
and requires special design attention ‘Corrosion Engineering’, (1967), Army Corps of Engineers, Engineer
and monitoring. McGraw Hill Book Company. Research and Development Center
2. Schweitzer, P.A., Ed., Marcel Construction Engineering Research
As feed streams become more sour Dekker, (1996), Corrosion Engi- Laboratory, Champaign, 2007.
with higher H2S concentrations, cor- neering Handbook. 11. Elayaperumal, K., and Raju, V.S.,
rosion and potentially catastrophic 3. Chakravorty, S.K., ‘Forms of cor- ‘Corrosion Failures – Theory,
leakage may become common oc- rosion and their prevention – Part case studies, and solutions’, John
currences. Therefore, to prevent such II’, Alkali Bulletin, Alkali Manu- Willey & Sons(2015).

188 Chemical Weekly April 1, 2025

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