Data Logger

(Also field data logger.) Keyboard-type device used to electronically record inspection data.

Data Reviewers

Personnel from other departments who will review the recorded inspection information for use in future repair planing or during the auditing process.

Dead Man

A fixed anchor point used in advancing a saddle or cradle type boring machine.


Accumulation of material consisting of organic (human waste, food wastes, etc.), (sand, gravel, wood, etc.), grease or roots.

Deck Assembly

Drive train assembly for a split design boring machine.