What is CATHODIC Protection for Underground Piping?

"BY DEFINATION OF CATHODIC PROTECTION “It is method commonly used to protect numerous metallic structures such as pipelines, ships, tanks and offshore oil platforms, cathodic protection works by allowing a more reactive, sacrificial metal to corrode instead of the protected metal.”
If interested to pursue Technical Training Programs with us. Do visit our website @ www.ganeshpiping.com/
Also join our Telegram Group, to get the latest updates: t.me/+tld_ot7OhkBmYWQ1
#welding #weldingengineer #epc #epcm #epci #mechanicalengineer #pipefitter #projectmanager #corrosion
"

[@sureshgurram9974]

Can be explained in a better way and seems few points are missing
1. Where dissimilar metals are in contact, one will act as cathode and other will act as anode based on the active metals list in the periodic table. Anode will corrode. For this we need to isolate dissimilar metals using insulating gaskets
2. If pipe is in under ground, pipe will be become anode as earth is huge potential cathode. To avoid pipe corrosion, use a less active material so that it will act as sacrificial anode and pipe become cathode

[@zakirullah223]

How to become a CP Engineer.
What kind of qualifications is required?