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Protecting People
Protecting Infrastructure

Leading New Zealand in Utility Location

Underground service location

There's a complex network of underground assets delivering services to homes, businesses, factories and campuses around New Zealand. Every day, those services are put at risk because of poorly planned excavation and construction.

Damage to underground services can be more than just an inconvenience. Going without water for a few hours, or ultra-fast broadband for a couple of days might be annoying, but damaging a high voltage power cable or a strategic gas pipe line can come with serious consequences.

Reduce your exposure to underground service strikes with Utility Location Services. We provide a comprehensive set of capabilities to help you understand what's underground before you start digging.

5 Good Reasons

  1. Safety: utility strikes can kill and injure,
  2. Cost: damages or down time can be costly,
  3. Responsibility: you have a duty of care to the public and workers,
  4. Liability: poor excavation practices leave you exposed, and
  5. Business Image: major utility strikes are bad news.
Civil works usually involve breaking ground. When you do, you need to be sure you know what services exist and what you're likely to uncover during excavation.
Geotechnical Site

CPT pre-screening

Underground service pre-screen
As a civil contractor you have a duty of care to your staff to reduce the risk from utility strike hazards.

Civil works contracts often require the head contractor to determine and confirm the location of undergrounds services before work starts. Not only does it make sense to check services location before you excavate, knowing where they are at the design stage can save substantial money and avoid unnecessary down-time.
Campuses including schools, technical institutes, and universities are a web of complex underground services.

Whether goods records exist or not, knowing where services are before any construction or excavation takes places is vital. Shutting down a site because you failed to properly identify and confirm the location of services is not an option.

Campus as-built records may be out-of-date, poorly maintained or just non-existent. Holding your contractors to blame may no longer be acceptable.
Primary School

Building project

Underground services at Primary School
Failure to keep adequate records could make your campus management culpable in underground service strikes.
Industrial sites present a special case when it comes to underground services and assets.

Over years the complex web of underground pipes, cables and ducts, will grow, be replaced and changed as business needs require.

Major construction project

Underground services at powerstation
Poor or non-existent facility underground service plans are unfortunately common place.

When your business depends on underground infrastructure don't leave anything to chance. Avoid unnecessary down time by knowing where your assets are. You also have a responsibility to to those contractors on-site carrying out excavation to maintain good service records .
Underground services are seldom recorded inside the property boundary. While the Utility's may keep records to your fence, after that anything goes.

If you're digging at home you need to know where your underground services run. Damaging power or gas can be serious and you'll often be liable for any repairs that may be required.
Residential Gas Line

New fence construction

Gas line location for new fence
If you're replacing a boundary fence you should know where utility services cross into your property. Even hand digging can damage a pipe or cable, but when your post hole auger hits a gas line things get serious very quickly.

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How we help our clients

ULS offers a range of services to help our clients identify and map underground services and assets. Our single aim is to help make sense of what can't be seen. At ULS it's all about Underground: understood ™.

Underground Service Designation

By their very nature, underground services and assets can't be seen. That's what makes blind or careless excavation so risky.

Using advance 'above ground' techniques ULS can determine the most probable location of many underground services and assets. This process is called designation. It differs from locationbecause until an underground service is physically exposed it's true position can't be guaranteed.

At ULS we use the following techniques for service designation:
  • Electro Magnetic Detection: by detecting an electro magnetic (EM) signal carried by a conductive service, such as a power cable, phone line or a tracer wire, the likely location of the service can be determined.
  • Remote Transmitters: when a service can't or won't carry an EM signal, a radio transmitter can often be inserted into a pipe or duct. The transmitter is then followed from the surface to trace the path of the service.
  • Ground Penetrating Radar: when an underground service can't be detected using any of the above methods, Ground Penetrating Radar (GPR) provides a safe and effective alternative.
Underground power cable location
Electromagnetic Tracing

High tension power cables

Ground Penetrating Radar - Campus water mains
Ground Penetrating Radar

Campus water mains

We've got it covered.

Whether you need a simple surface mark out or a digital drawing based on surveyed results, ULS has you covered.