The process of accidentally cutting a groove or hole in a tank's exterior. Forming gouges can reduce the strength of a tank and may result in a spill or release of its contents. Gouges are not critical unless they cross a weld seam.

Cutting of a groove in the surface of a metal using a gas cutting torch of an arc-air cutting outfit.

1. To make grooves or holes in something. 2. To scoop, dig, or force out. 3. Rapid removal of excess material by any means.

A term applied to both the technique, and the decoration of a surface with repeated small carved-out semi-circular depressions. This decoration is often found on oak furniture.

The process of creating a zone of mechanical damage that includes cold working, residual stresses, plastic distortion, and (generally) moved or removed metal.