SK3000 Operator’s Manual Prepare - 23
Prepare Jobsite
Classify Jobsite
Select a Classification
Jobsites are classified according to underground hazards present, not by line being installed. Jobsite may
have more than one classification.
Classify jobsite as electric if jobsite is in question or if the possibility of unmarked electric utilities exists.
Apply Precautions
Once classified, precautions appropriate for jobsite must be taken. Follow US Department of Labor
regulations on excavating and trenching (Part 1926, Subpart P) and other similar regulations.
Electric Jobsite Precautions
Use one or both of these methods:
• Expose line by careful hand digging or soft excavation.
• Have service shut down while work is in progress. Have electric company test lines before returning
them to service.
Natural Gas Jobsite Precautions
Position equipment upwind from gas lines and use one or both of these methods:
• Expose line by careful hand digging or soft excavation.
• Have service shut down while work is in progress. Have gas company test lines before returning them
to service.
If working . . . then classify jobsite as . . .
within 10’ (3m) of a buried electric line electric
within 10’ (3m) of a natural gas line natural gas
in concrete, sand, or granite which is capable of producing
crystalline silica dust
crystalline silica dust
within 10’ (3m) of any other hazard other
Underground utilities. Contact can cause death or serious
injury. Locate and verify underground utilities before digging or drilling.