Using isolation kits with Cathodic Protection
Using isolation kits with Cathodic Protection
(OP)
Hi,
I have some quick questions about using isolation kits with Cathodic Protection. My web and forum searches didn't turn up what I needed so hopefully you all can help me.
1. Can someone link me to an article or briefly explain when to use a single and double washer set?
2. The sleeve just fits into flange hole, correct? it doesn't extend past that (I'm guessing so, otherwise how could you tighten the nuts) but I just want to make sure I'm not missing something.
3. Concerning an isolation kits use with cathodic protection. Since the current flows from the anode to the pipe in question though the electrolyte, what's to stop the CP current from hitting the pipe on both sides of the isolation kit? Am I correct in assuming its the electrical connection from the pipe to the DC source that completes the circuit and results in CP for the protected pipe? For a section of pipe that's not electrically connected wouldn't the CP current be considered stray current and thus cause corrosion?
I have some quick questions about using isolation kits with Cathodic Protection. My web and forum searches didn't turn up what I needed so hopefully you all can help me.
1. Can someone link me to an article or briefly explain when to use a single and double washer set?
2. The sleeve just fits into flange hole, correct? it doesn't extend past that (I'm guessing so, otherwise how could you tighten the nuts) but I just want to make sure I'm not missing something.
3. Concerning an isolation kits use with cathodic protection. Since the current flows from the anode to the pipe in question though the electrolyte, what's to stop the CP current from hitting the pipe on both sides of the isolation kit? Am I correct in assuming its the electrical connection from the pipe to the DC source that completes the circuit and results in CP for the protected pipe? For a section of pipe that's not electrically connected wouldn't the CP current be considered stray current and thus cause corrosion?





RE: Using isolation kits with Cathodic Protection
You are seach with incorrect wording. Google "cathodic protection insulation kit", you will find what you need.
2 You are correct
3 If you have good insulation the pipe is not part of the circuit and should recieve very little current.
Good Luck
RE: Using isolation kits with Cathodic Protection
Steve Jones
Materials & Corrosion Engineer
http://www.linkedin.com/pub/8/83b/b04
RE: Using isolation kits with Cathodic Protection
RE: Using isolation kits with Cathodic Protection
Steve Jones
Materials & Corrosion Engineer
http://www.linkedin.com/pub/8/83b/b04