AC current & inner pipes corrosion
AC current & inner pipes corrosion
(OP)
We often see "pin holed" inner steel water pipes in buildings
(corrosion from the inner side of pipe).
If it is possible, some questions on this item.
1. Can the AC current on internal pipeline systems of buildings
result in of their accelerated "pin hole" corrosion.
2. What values of AC currents definitely cause "pin hole" corrosion of
internal steel pipes of buildings (i.e. what values of currents it is necessary
to consider dangerous).
3. To what extent the use of cathodic protection (at presence and absence
of AC currents) can solve this this problem of inner corrosion of pipes in buildings).
4. Is it necessary to implement the elimination of AC currents on internal
water pipes, in view of operation others chemical, electrochemical and bacteriological
making of the process of corrosion.
5. Is it possible to to give an expert estimation of the contribution
in intensity of corrosion processes of inner water steel pipes in buildings
only to a component, bound with AC currents, on a background of all band
of the factors of an internal pipes.
6. Means elimination of AC currents on pipes complete termination of the process
of corrosion, or it is possible to speak about its deceleration; and, in the latter
case, up to what degree.
7. What literature is available on this item.
Thank you very much in advance.
(corrosion from the inner side of pipe).
If it is possible, some questions on this item.
1. Can the AC current on internal pipeline systems of buildings
result in of their accelerated "pin hole" corrosion.
2. What values of AC currents definitely cause "pin hole" corrosion of
internal steel pipes of buildings (i.e. what values of currents it is necessary
to consider dangerous).
3. To what extent the use of cathodic protection (at presence and absence
of AC currents) can solve this this problem of inner corrosion of pipes in buildings).
4. Is it necessary to implement the elimination of AC currents on internal
water pipes, in view of operation others chemical, electrochemical and bacteriological
making of the process of corrosion.
5. Is it possible to to give an expert estimation of the contribution
in intensity of corrosion processes of inner water steel pipes in buildings
only to a component, bound with AC currents, on a background of all band
of the factors of an internal pipes.
6. Means elimination of AC currents on pipes complete termination of the process
of corrosion, or it is possible to speak about its deceleration; and, in the latter
case, up to what degree.
7. What literature is available on this item.
Thank you very much in advance.
Talk To Other Members
RE: AC current & inner pipes corrosion
You could have piping failure problems due to electrical weirdness, I suppose, but I'm not aware of that happening anywhere other than buried systems. I'd be much more inclined to think of chemical/mechanical causes, and my experience is that about 75% of all of the problems that are considered to have a chemical solution to deal with them, actually have a mechanical root cause. Select the right equipment/piping material for an application, install it properly, and you've solved most of these problems before they've even started.
RE: AC current & inner pipes corrosion
This is a common problem from dissolved oxygen and no one can predict where the pitting will be first through the wall. Water lines made of carbon steel always have this unless the water is dearated or inhibited, neither of which is practical in so-called "drinking water" systems.
Some systems may be protected with internal Cathodic Protection - usually a ribbon of Zinc inside the pipe - but this is more the excetion than the rule.
RE: AC current & inner pipes corrosion
But what the physics principle do you mean, I am very interested to know them better.
Thank you again.
RE: AC current & inner pipes corrosion
All I really wanted to insist is that stray currents DO NOT OCCUR inside a hollw metallic conductor, which the water pipe would effecively be.