Volume 11, Issue 41 (11-2021)
مهندسی خوردگی 2021, 11(41): 7-21 |
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Measurement of Instant off Potential of
Steel Pipelines in Conjunct Urban Gas
Distribution Networks. مهندسی خوردگی 2021; 11 (41) :7-21
URL: http://journal.ica.ir/article-1-160-en.html
URL: http://journal.ica.ir/article-1-160-en.html
Abstract: (554 Views)
Measuring the instant off potential of pipelines in order to specify the cathodic protection condition of the
pipelines and provide an overview of the quality of the coating is inevitable. However, there are many challenges
in measuring this quantity for urban gas distribution networks due to interconnected structure, current
interferences, especially interferences of local station networks, connection of new and old networks with
different required potential levels, existence of networks with Different coatings in one area, worn urban
structures, traffic and number of test points, large number of stations in the target area, have been identified. In
this paper, an attempt has been made to provide solutions to the above-mentioned challenges resulting from IOP
measurement experiences in the Ahwaz metropolitan gas distribution network and the requirements that facilitate
project implementation, as well as data collection with higher accuracy. The measurement was based on the use
of interrupter and fast data logger synchronizable that could be connected to pc. However, the contents can be
generalized when using other equipment, such as trans-rectifier timers and usual voltmeters (in accordance with
the instructions for use)
pipelines and provide an overview of the quality of the coating is inevitable. However, there are many challenges
in measuring this quantity for urban gas distribution networks due to interconnected structure, current
interferences, especially interferences of local station networks, connection of new and old networks with
different required potential levels, existence of networks with Different coatings in one area, worn urban
structures, traffic and number of test points, large number of stations in the target area, have been identified. In
this paper, an attempt has been made to provide solutions to the above-mentioned challenges resulting from IOP
measurement experiences in the Ahwaz metropolitan gas distribution network and the requirements that facilitate
project implementation, as well as data collection with higher accuracy. The measurement was based on the use
of interrupter and fast data logger synchronizable that could be connected to pc. However, the contents can be
generalized when using other equipment, such as trans-rectifier timers and usual voltmeters (in accordance with
the instructions for use)
Keywords: Instant off potential, urban gas distribution network, interrupter, data logger, test point, trans-rectifier
Type of Study: Research |
Subject:
General
Received: 2023/01/28 | Accepted: 2023/01/30 | Published: 2023/01/30
Received: 2023/01/28 | Accepted: 2023/01/30 | Published: 2023/01/30
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