Three Reasons Why Corrosion Control WORKS!!!
Only isolated areas of the plumbing are corroding. Just because you see a severely corroded piece of pipe removed from a failure location does not mean that all of the piping is in the same bad condition. When you have a leak and you observe the pipe sample remember that the section where the leak occurred represents the worst case, and may not accurately represent the condition of the whole system. Copper corrosion is primarily due to “corrosion cells” that are highly localized. For example, in construction defect litigation cases, statistical analysis involving randomly exposing a number of areas of copper to determine the extent of the corrosion damage indicated that corrosion was limited to less that 5% of the actual piping. Typically, a majority of the piping is still serviceable and does not have severe corrosion.
- Copper piping can be very thin and still be serviceable. Metallic piping has high mechanical properties, that is, it is very strong. For example, the burst pressure rating for the less expensive ¾-inch Type M (thin wall) copper tubing is 2,600 psi. The typical water pressure is only about 60 psi, therefore, there is over a 40-times factor of safety. The point is, copper can be very thin and still be serviceable. The copper tubing typically routed below-slab is the thicker walled Type L, which has a higher burst pressure than Type M.
- Cathodic Protection and Water Treatment Inhibitors are known to be effective. There are no doubts regarding the effectiveness of cathodic protection. Since 1972, cathodic protection has been required by law for all buried gas and oil pipelines and storage tanks (D.O.T. Pipeline Safety Regulations Part 192). The water treatment inhibitor methods used by Leak Control Systems are recommended by the USEPA Safe Drinking Water Act (Lead and Copper Rule) to address lead and copper corrosion problems in piping systems.