ABSTRACT
This chapter shows how to do hydrostatic testing (HYD) to minimize unwanted post-HYD trauma, in other words, corrosion and particularly microbiologically influenced corrosion (MIC). Among the various factors that can be significant in affecting HYD quality, the following six factors are of importance: HYD water and its source; pipe material; intended application; chemical treatment applied to HYD water; wet parking duration; and discharge. As HYD water is generally a raw water in the sense that it comes from natural sources and has not been specifically treated for the purpose of controlling its corrosivity, it is essential to use chemicals to condition it. There are three chemicals that can be added into HYD water: oxygen scavengers; corrosion inhibitors; and biocides. Like any other chemicals, when oxygen scavengers are combined with other chemicals, the resulting effect may be antagonistic, meaning that either one or both chemicals may show an altered/reduced chemical impact.
