Locating & Marking Application Guide for the Gas Industry

View PDF version of this guide (PDF, 590 KB)
Main or Service Stubs

• High likelihood need to connect later or due to new construction
• Pinpoint location of connection point where a locator may not provide the needed level of accuracy
• Stubs often get knocked down or covered when their end is above ground

Main or Service Repair Locations
Higher risk point for future failures, where to look first when there’s an issue
Easily able to identify and map
Ease of identification using a marker and precise
Positive location
Main to Service Connection
Marker clearly defines the location of the facility
If connection point and premise point can be identified, may improve ability to determine the path of the service line
Provides a good starting point
See more details
Service Valve
Sometimes paved over, covered with vegetation or snow pack
Can serve as an aid with emergency response to shut off valves
Main Shutoff Valve
Aids with emergency response to shut off valves
Not easily locatable and needs to be located quickly
Often covered
Main 90 degree Elbows, Tees and Crosses
Logical point of failure (leak)
Assists in path marking of critical assets
Change of direction can make them broadside to the path of the utility, making it vulnerable to being hit
Offsets
Assists in path marking of critical assets
Point of interest indicating something has changed
Fittings present – leak potential
Potential higher risk that an abandoned facility may be present in the straight line
Road Crossings
Depth of cover confirmation, location of conduit, location accuracy for future road work
Deep dive markings on each side of road to confirm utility location after bore, find buried or sawed-off conduits
See more details
  • Locating and Marking - Main or Service Stubs

    Main or Service Stubs

    • High likelihood need to connect later or due to new construction
    • Pinpoint location of connection point where a locator may not provide the needed level of accuracy
    • Stubs often get knocked down or covered when their end is above ground
  • Main or Service Repair Locations

    • Higher risk point for future failures, where to look first when there’s an issue
    • Easily able to identify and map
    • Ease of identification using a marker and precise
    • Positive location
  • Main to Service Connection

    • Marker clearly defines the location of the facility
    • If connection point and premise point can be identified, may improve ability to determine the path of the service line
    • Provides a good starting point
    • Poor locatability due to ungrounded tracer wire
    • Sometimes with a metal meter, if changed to plastic not easily locateable
    • High risk point for excavation damage, often most vulnerable location for strikes
  • Service Valve

    • Sometimes paved over, covered with vegetation or snow pack
    • Can serve as an aid with emergency response to shut off valves
  • Main Shutoff Valve

    • Aids with emergency response to shut off valves
    • Not easily locatable and needs to be located quickly
    • Often covered
  • Main 90 degree Elbows

    • Logical point of failure (leak)
    • Assists in path marking of critical assets
    • Change of direction can make them broadside to the path of the utility, making it vulnerable to being hit
  • Offsets

    • Assists in path marking of critical assets
    • Point of interest indicating something has changed
    • Fittings present – leak potential
    • Potential higher risk that an abandoned facility may be present in the straight line
  • Road Crossings

    • Depth of cover confirmation, location of conduit, location accuracy for future road work
    • Deep dive markings on each side of road to confirm utility location after bore, find buried or sawed-off conduits
    • Identify facility in high congestion, high traffic area
    • Identify facility in area of future construction
Follow Us
Change Location
United States - English