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Abstract
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Article Information:
Proper Selection of Earth Electrode in Corrosive Soil of Niger Delta
John Tarilanyo Afa
Corresponding Author: John Tarilanyo Afa
Submitted: 2010 December, 28
Accepted: 2011 March, 08
Published: 2011 April, 20 |
Abstract:
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An earlier study carried out on corrosive effect of soil on earth electrode in the coastal areas of Niger
Delta reveals that eight out of ten houses earthed for ten year and more loose their earth electrode connection.
It was necessary to carry out an investigation in Rivers State to identify the reasons of the problems and find
possible recommendation for better performance of earth electrode. Six sites were selected in Port Harcourt,
one of it was an industrial area. Ten sites were selected in other part of Rivers State, five of them are from the
coastal areas. For each site, twenty houses were selected and the type of earth electrode, year of installation and
condition of electrodes were checked. From the selected sites, measurements were taken for resistivity using
the four point measurement, the pH and the moisture levels were also determined. The results show that the soil
was corrosive especially the coastal soil but several factors also contributed to the poor performance of the
earthed electrodes. These are lack of proper knowledge of the function of earth electrode, wrong choice of
materials as a result of untrained personnel and wrong installation methods.
Key words: Earth electrode bonding, earth resistivity, earthing system, galvanic corrosion, permanent moisture level, physico-chemical properties,
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Cite this Reference:
John Tarilanyo Afa, . Proper Selection of Earth Electrode in Corrosive Soil of Niger Delta. Research Journal of Applied Sciences, Engineering and Technology, (04): 252-256.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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