Patent Document ID: 20090010489
Application ID: 12153442
Patent Status: 0

Claim One:
1. A method for comparing an as-built state of an industrial plant and an associated 3D CAD model of the industrial plant, comprising: separating components of the industrial plant into reliable components and unreliable components; obtaining digital images of the unreliable components in the as-built state of the industrial plant; superimposing the digital images of the plant and the 3D CAD model the plant; for the unreliable components, comparing the as-built state of the industrial plant with the associated 3D CAD model based on the digital images superimposed on the 3D CAD model; and for only the reliable components having physical installations visible in the digital images, comparing the as-built state of the industrial plant with the associated 3D CAD model based on the digital images superimposed on the 3D CAD model.