NV C-1I Chilled-Water Piping Practice Questions - Nevada C-1I Chilled-Water Piping Contractor Examination Exam

Why is black steel generally preferred over galvanized steel on a closed chilled-water loop?

Zinc on galvanized pipe can flake into the closed loop and does not add useful corrosion protection once the system is treated and sealed Galvanized coatings are required by UMC Chapter 12 on every closed loop Black steel is listed only for steam, so galvanized must be used for chilled water Galvanized pipe cannot be insulated

Correct Answer:

Zinc on galvanized pipe can flake into the closed loop and does not add useful corrosion protection once the system is treated and sealed

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