We help natural gas utility providers find their older existing lines.
We utilize high-accuracy data collection using GNSS equipment for as-builts, pipeline projects, and utility infrastructure provided in conventional formats. We have a standard operating procedure to both complete gas leak detection work and GPS survey simultaneously.
ACCURACY 5-10m (LINE LOCATOR)
For this level of accuracy, we hook up a transmitter to tracer wire, and follow follow the signal as we gas leak detect. Every 10 feet, we take a GPS data point.
ACCURACY < 1m (RECEIVER W/ LINE LOCATOR)
For this level of accuracy, we use the same operating procedure in finding the line, but we utilize a GNSS receivers to take data points and apply a RTX correction.
How does accuracy work?
A line locator with a GPS module works on a cell signal. The strength of the cell signal will dicatate the accuracy of the data point taken. In an area with next to no tree coverage, and in close proximity to an urban area, the measurement can be less than 1m.
However we’ve noticed that line locators in rural Alberta are usually around 5-10m accurate.
GNSS receivers communicate predominantly with satellites to take their measurements. This method is more reliable, and can get you within centimeters of measurement.
A receiver alone can get you 3-5 satellites, however we also have use RTX subscription which allows us access to many satellite groups called ‘Constellations’.