KMD Science, Inc.

Our Technologies

Pipeline Defect Locator (PDL)

Until PDL, a perfect fast-monitoring system for leak detection had not yet been designed. The ideal system is:

  • Automated (no manual control)
  • Continuous (24-hour emergency service)
  • Able to detect and locate small leaks
    (A small undetected leak can turn into an environmental disaster.)
  • Applicable to all old long buried pipelines
    (The old ones have more corrosion problems.)
  • Affordable
  • Provided with a rapid response system
    (It provide almost real-time detection, which means that immediate action can be taken to minimize the effect of the leak.)
  • Low-powered
    (It is not simple to supply power along a pipeline.)

The PDL technology that KMD Science has designed supplants current technologies which are the standard in the pipeline industry. There are currently two acoustic technologies under development in the U.S. which are used for the detection of defects in pipe systems. None can, thus far, detect defects beyond 250 feet with any degree of accuracy and none are truly portable or developed for permanent installation.

The current state-of-the-art has been an invasive technology called "Smart Pigs." The Smart Pigs are heavily instrumented plugs that are inserted into a pipe. They then video- and data-link back to a central location where defects and pipeline condition can be monitored. This process is very expensive, slow, and sometimes requires that a pipe be emptied of its contents. This can cost several tens of thousands of dollars per segment.

Typically, a pig will only be inserted for lengths of less than 1,500 feet, removed, and re-inserted at another location. Because of the extreme cost of operation, pigs are typically only utilized in high-risk areas, such as at elbows or other angular sections where interior scrubbing and corrosion are a real threat to a pipe’s integrity.

The PDL, developed by KMD Science, is a permanent installation that can detect wall thinning, cracks, corrosion losses, nicks, dings, and dents at lengths up to 2,500 feet for a fraction of the cost.

The PDL technology is very prescient and timely, given the enormous financial risk associated with environmental fines, personal injury/death, and property damages resulting from pipeline failures. Over $385 million is spent annually, inspecting pipelines. Over $125 million is spent annually, repairing collateral damages from broken pipelines, excluding legal fees, fines, payouts to the injured and survivors.

PDL can indicate tampering and defects for most scenarios, allowing for early alert.

PDL technology is based upon Guided Wave Technology, a known science extended and improved for a real-time, in-situ monitoring system for rapid detection of developing internal/external defects in piping systems.

PDL’s primary benefits include:

  • Combines state-of-the-art and proprietary solid state acoustic imaging components with custom software.
  • System components measure and analyze amplitude(s) and time domain(s) of system-generated acoustic source/return signals.
  • Each “station” can monitor up to 2,500 feet of continuous pipe and detect flaws within three linear feet in both directions or approximately one-half mile of pipeline per station.
  • Automatic, robust operation.
  • Favorable comparative cost to all competitive systems over the life of the system

While PDL can’t stop natural pipeline deterioration or prevent terrorism attacks, it can hedge financial risks and give peace of mind where pipeline integrity is concerned and inspection costs and associated financial risks are high.

PDL is very relevant for environmental issues defense and public safety. In light of the thousands of incidents, thousands of deaths and injuries, and millions of dollars in property damage logged as a result of pipeline failures during 1986 through 2000, there is ever more pressure being placed upon legislators to impose more stringent pipeline defect monitoring capabilities on the companies that operate them.


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KMD Science, Inc.
450 Lindbergh Avenue, Livermore, CA 94550
(209) 985-1705

January 10, 2007