Statistics Analysis Measures Painting of Cooling Tower

Abstract

This study refers to the cooling tower of Megalopolis (construction 1975) and protection from corrosive environment. The maintenance of the cooling tower took place in 2008. The cooling tower was badly damaged from corrosion of reinforcement. The parabolic cooling towers (factory of electrical power) are a typical example of construction, which has a special aggressive environment. The protection of cooling towers is usually achieved through organic coatings. Because of the different environmental impacts on the internal and external side of the cooling tower, a different system of paint application is required. The present study refers to the damages caused by corrosion process. The corrosive environments, the application of this painting, the quality control process, the measures and statistics analysis, and the results were discussed in this study. In the process of quality control the following measurements were taken into consideration: (1) examination of the adhesion with the cross-cut test, (2) examination of the film thickness, and (3) controlling of the pull-off resistance for concrete substrates and paintings. Finally, this study refers to the correlations of measurements, analysis of failures in relation to the quality of repair, and rehabilitation of the cooling tower. Also this study made a first attempt to apply the specific corrosion inhibitors in such a large structure.

Influence of Flue Gas Injection on the Long-Term Durability of a Natural Draft Concrete Cooling Tower

“…The inner surface of the tower wall is attacked chemically by low-concentration acid vapor because residues of SO x and NO x remain in the cleaned flue gas [2,3]. The conventional approach for addressing this potential corrosion risk is to apply acid-resistant coatings on the inner surface of cooling towers [8,9]. However, the effective service lives of polymer coatings, which require continuous repainting to meet service life requirements, are usually short because of aging effects [10,11].…”

Electrochemical Evaluation of WD-40 Oil as Temporary Protection with Additions of Natural Compounds as Inhibitors in Cast Iron

“…(4) Many organic compounds have been evaluated to explore their possible inhibitor corrosion use. All these researches reveal that these compounds, especially those with N, S and O, show a significant inhibition efficiency (5,6). Caffeine has already been proven as a corrosion inhibitor for copper alloys by several researchers giving good results (7)(8)(9)(10).…”