Which location is not commonly associated with crevice corrosion?

Crevice corrosion occurs in confined spaces where stagnant solutions can accumulate, often leading to localized corrosion due to the differential concentrations of corrosive agents. In this context, the shell to repad welds is less commonly associated with crevice corrosion compared to the other locations mentioned.

Weld joints and flanged connections typically create gaps or crevices where moisture or corrosive substances can become trapped, making them breeding grounds for crevice corrosion. Similarly, pipe fittings, which can create tight spaces or connections, are also prone to this type of corrosion.

In contrast, shell to repad welds are generally designed to maintain a continuous surface without the same risk of stagnant liquid accumulation, reducing the potential for crevice formation. Therefore, this location is less likely to experience crevice corrosion relative to the other options, which are more prone to such localized corrosion phenomena.