Water Main Inspection - Waste Water Pipe Inspection - Raw Water Pipe Inspection
Q: Is RFT suitable to inspect all material types?
A: No, RFT is suitable for cast-iron, Ductile-Iron and Steel pipelines
Q: How fast is the inspection?
A: Typical inspection speed is from 5m/min to 20m/min (15'-60'/min)
Q: Can the Tools run in pressurized lines?
A: Yes, All Tools, up to 36" diameter can run in pressurized lines. Most Tools are tested to 1500 PSIG
Q: Can we launch and receive the Tool from one entry point?
A: Yes, for short runs (<1km), the Tool can be tethered with either a steel wireline or an Amsteel rope.
Q: If the Tools are tethered, can the tether damage my cement mortar liner?
A: We use Amsteel rope to mitigate the risk of damaging liners in elbows, but if you are still concerned we recommend that the Tool operate with the flow (no tether)
Q: What size Tools are available?
A: We have most Tool sizes to fit pipelines between 2" and 36"
Q: Can Tools that have been used in waste water be used to inspect potable water mains?
A: We have sterilization procedures for our Tools; however, some pipeline owners do not want to allow this, so we generally have dedicated Tools for each service.
Q: Do you work outside of North America?
A: Yes, we have worked in Australia, Spain, UK, Norway, France, Thailand. Our Tools are quite transportable, and we are willing to work anywhere.
Q: Why is RFT more suitable than MFL or UT for water main inspection?
A: RFT has the following advantages over other inspection techniques:
- RFT Tools do not need to contact the inside surface of the pipe
- RFT Tools can work in lined pipelines or with tubercles up to 1" thick
- RFT Tools detect local corrosion pits before they perforate the pipe and leak
- RFT Tools are bi-directional
- Pipelines can be flowing, pressurized or empty
- RFT technology can inspect "grainy" materials such as cast iron
- Experience counts: we have over 25 years of experience using RFT for oil and gas, water and waste water pipeline condition assessment
Q: Can you monitor the Tool from above ground?
A: Yes. RFT Tools have a strong exciter coil, running at low frequency. Tools are often detectable up to ten feet away
Q: What temperature can the Tools tolerate?
A: RFT Tools can operate between zero and +65 degrees C.
Q: Does my pipeline have to be taken out of service for the inspection?
A: No, but the flow may need to be throttled back to achieve ideal inspection speed.