When preparing/writing shipyard items for your vessel's upcoming dry-docking period, what would you consider as an item regarding CuNi saltwater cooling systems/piping?
⢠Dissimilar metals in seawater systems and how they affect corrosion and wastage ⢠What shipyards are normally asked to inspect vs. fully replace on CuNi (copperânickel) piping during a dryâdocking ⢠How a chief engineer balances cost, risk, and access when writing shipyard items
⢠Think about which option shows you are proactively checking the most vulnerable parts of the CuNi system without assuming everything is fine or demanding a complete unnecessary renewal. ⢠Ask yourself: in real life, would you usually request total replacement of all components, or targeted inspection/removal of sections that are most likely to suffer hidden damage? ⢠Which choice reflects good maintenance practice: ignoring a system because it hasnât failed yet, replacing everything regardless of condition, or inspecting areas where internal corrosion/erosion is likely but not visible externally?
⢠Make sure the option you pick shows active inspection or verification, not just assuming no problem exists. ⢠Check whether the item describes something that is practical and commonly specified in a dockyard work list, rather than an extreme âreplace everythingâ approach. ⢠Verify that the choice considers internal condition of CuNi piping in seawater service, which may not be visible until sections are opened or removed.
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