Sigma provides pipeline scanning services for piping that is above ground and uninsulated. The piping can be painted or have a coating and still be scanned. For this service, we use the PS-2000 Pipe Scanning System based on the principles of Low Frequency Electromagnetic Technique (LFET). The LFET technology allows to rapidly scan areas of piping to achieve greater than 90% coverage. The PS-2000 can be used as a quantitative tool, or as a rapid screening tool. In the screening mode, we use A-Scan Ultrasonics to prove-up any flaw indications. This technology is applicable to magnetic and non-magnetic piping. Cast Iron or other cast materials can also be tested.
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Piping Inspection
In Nuclear Power Plants, piping such as Service Water Systems and Fire Protection Systems can be scanned to detect and quantify MIC (microbiologically induced corrosion) Attack and even FAC (Flow Accelerated Corrosion).
In coal burning Fossil Power Plants, coal mill piping can be rapidly scanned for ID erosion from pulverized coal.
For short-run underground piping, SIGMA NDT can provide inspection services by gaining access to the pipe ID. Then we can employ Remote Field Electromagnetic Technique
