Safety Focus of the Week: Digging In the “Tolerance Zone”
This week’s focus is digging safely around underground utilities. The Digsafe Excavator Manual includes procedures for excavating adjacent to underground utilities.
Within 18 inches of a utility is considered the 18 inch “Tolerance Zone” where excavation with heavy equipment is restricted until the location, depth, and dimensions of the utility are visually verified in a hand or vacuum excavated pit.
The Tolerance Zone is furthre described on pages 13 and 14 of the DGS Excavator Manual NOV 2015 for download