In the world of underground utility work, one constant remains: the challenge of accurately locating utilities before digging begins. This process, crucial for safety and efficiency, is often filled with frustrations, even with the advanced tools and techniques available today.
Utility locators have been the backbone of efforts to map out the labyrinth of cables, pipes and conduits that lie hidden beneath our feet. These professionals use a variety of tools to detect and mark the presence of underground utilities. However, despite the sophistication of these technologies, the process is far from foolproof.
I found this out back in July. I serve as the volunteer coordinator for our local soccer club in northern Wisconsin, and our biggest fundraiser each year is staffing a country music festival that graces our community every July. The preparation begins two weeks before the festival and our job is to stake the entire campground — several hundred acres. To find each campsite (thousands of them), there are 3-inch iron or steel pipes buried at each corner of every single campsite.
Sometimes it’s easy, other times it’s frustrating and I think a lot of the same frustrations we have, you have run across too. Let’s take a look at some of those, shall we?
ACCURACY OF EXISTING RECORDS
Maps and as-built drawings can often be outdated, incomplete or inaccurate. This can lead to situations where locators are essentially working blind, relying on their skills and experience to interpret signals from their devices.
When records are wrong or missing, the risk of hitting a utility line increases significantly, posing danger to workers and the public, and leading to costly delays and repairs.
EQUIPMENT MALFUNCTIONS
Electromagnetic locators, while powerful, are also prone to interference. Nearby metal objects, electrical currents and even soil conditions can affect their readings, leading to false positives or missed detections. This means that even with the best equipment, a locator’s job requires a significant amount of skill and intuition. It’s a task that combines art and science, often under tight deadlines and high pressure.
Ground-penetrating radar offers another method for locating utilities, especially nonmetallic pipes that electromagnetic locators can’t detect. However, GPR is not without its limitations. Its effectiveness can be reduced by soil conditions, moisture content and the presence of other underground anomalies. Interpreting GPR data is also complex, requiring specialized training and experience. Even then, the results are not always clear-cut, leaving room for error.
THE HUMAN FACTOR
In addition to technological and data challenges, there is the human factor. Communication between utility companies, locators and excavation crews is critical but can sometimes break down. Misunderstandings or lack of coordination can lead to utilities being incorrectly marked or missed altogether. Furthermore, the pressure to complete jobs quickly can lead to corners being cut, increasing the risk of accidents.
MAKING STRIDES
The industry is addressing these frustrations. Advances in technology, such as improved GPR systems and more accurate mapping software, are helping to reduce errors. There are also efforts to standardize and digitize utility records, making them more accessible and reliable. However, these solutions are not yet widespread, and the transition to more accurate and efficient systems takes time and investment.
Education and training are also crucial. Ensuring that all stakeholders — from utility locators to excavation workers — understand the importance of accurate utility location and are skilled in using the latest tools and techniques can significantly reduce the risk of accidents. Moreover, fostering a culture of safety and thoroughness over speed can help to mitigate many of the frustrations currently faced in the field.
YOUR TURN
While locating utilities before excavation is a challenging and sometimes frustrating task, it is also an essential one. By continuing to innovate, improve communication and prioritize training, the industry can work toward making utility location a more precise and reliable process.
Let me know what you or your company has done to help improve utility locating efforts. Or, reach out if you ever have the urge to volunteer at a music festival in northern Wisconsin in July! You can email me at editor@digdifferent.com.
