As the underground distribution network becomes increasingly complex, the potential for fatalities, cost to repair damaged utilities and possible fines to recover loss of service can be a potential hazard with drilling and excavating services. Vacuum excavation utilizes a high pressure air or water stream to penetrate, expand and break-up soil. Loose soil and rocks are simultaneously removed by a vacuum. This technique is typically used to create a hole one to two square feet and as deep as required to expose the buried utility. When utilized properly, the method is a safe non-destructive means of excavation.
Advantages of vacuum excavation include:
Locate and expose underground utilities with no risk
High quality vacuum excavation
Dig effectively in any type of soil
More productive than open pit/backfill methods
Clean and self-contained
Compact applications
Increased excavation speed
In general, vacuum excavations either expose a utility or remove earth in close proximity to a utility. An example of exposing the utility would be "day lighting" or "potholing" a gas main to determine its exact vertical and horizontal position, also known as Quality Level A in the field of Subsurface Utility Engineering. An example of the second general use would be an excavation in preparation for a boring or monitoring well that is within one meter of an existing utility.
Typical Applications:
Vacuum Excavating/Utility Potholing
Virtually any excavation job that involves existing utilities
Quality Level A confirmation of sub-surface utility locations
Advanced pre-job surveying and utility mapping
Clearing for boring and monitoring well installation
When excavating in the proximity of buried utilities, vacuum excavation is a safe alternative to hydraulic methods and an efficient alternative to hand digging.
Highlights of the Pacifictech Vacuum Excavation Unit:
