Track: Environmental Engineering and Management

Abstract

The objective of this article is the presentation of the design of a chemical process for the cleanse of internal surface of carbon steel pipes. The internal cleanse is done in the pipes of hydraulic systems that have servomechanisms and that require purities of NAS class 3, that is to say: in each cubic centimeter of solution that is transported inside the pipes it can be found, as maximum, 160 pollution particles the size of 2 micrometers, 40 of 5 micrometers and 5 pollution particles of 15 micrometers. The reason for this purity is determined because contaminants larger than 10 microns make the operation of servomechanisms difficult. The processes that are currently carried out are designed with the expectation that the contaminants found in the hydraulic oils come from the wear and tear of the system and not from an incorrect chemical cleaning execution, as indicated above. This false assumption has prevented improvements to the chemical process and generates high costs in corrective maintenance. The chemical process, designed by the authors of this article, will allow pollution, which is the number one cause of failure of any lubricated mechanical element, to be reduced and generate more production and lower costs in the operation of carbon steel pipe systems of hydraulics with directional, proportional and servovalves valves.