mc5w
Electrical
- Oct 4, 2004
- 703
Does anybody know anything about cathodic ( eletrolytic ) corrosion protection of natural gas and oil pipelines? I know the basic principles but have very little knowledge of how much voltage, how much current, and where to buy the carbon anodes.
One of my applications would be to protect the electrical grounding system in a foundry or other corrosive environment. I would probably need about twice as much current and voltage as a gas pipeline needs because gas and oil pipelines are electrically insulated on the outside to conserve on current and the concentrate the voltage gradient at the pipe surface. In the case of grounding electrodes, the metal is bare which would require more current all other things being equal.
A also know that the employee showers would need to be rebuilt with a grounding mat in the floor and a piece of grounded metal pipe in the drain all bonded to the water supply pipes and the electrical system ground.
In a foundry environment there is ammonia gas and aqueous solution which is murder on copper. This is because of one of the ingredients in sandless molding material that is less hard than sand is in machine tools when a machine tool encounters a sand pocket in the surface of a casting. Fluxing chlorides in combination with ammonia, oxygen, and water makes for a very nasty corrosive.
Mike Cole
One of my applications would be to protect the electrical grounding system in a foundry or other corrosive environment. I would probably need about twice as much current and voltage as a gas pipeline needs because gas and oil pipelines are electrically insulated on the outside to conserve on current and the concentrate the voltage gradient at the pipe surface. In the case of grounding electrodes, the metal is bare which would require more current all other things being equal.
A also know that the employee showers would need to be rebuilt with a grounding mat in the floor and a piece of grounded metal pipe in the drain all bonded to the water supply pipes and the electrical system ground.
In a foundry environment there is ammonia gas and aqueous solution which is murder on copper. This is because of one of the ingredients in sandless molding material that is less hard than sand is in machine tools when a machine tool encounters a sand pocket in the surface of a casting. Fluxing chlorides in combination with ammonia, oxygen, and water makes for a very nasty corrosive.
Mike Cole