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Leak Detection Program

The Basics of a Leak Program

Know the Hazards

  • Ensure Proper Training
  • Be Aware of Explosion / Implosion
  • Other Hazards

Planning The Leak Survey:

  • Review End Use Applications
  • Prioritize Equipment and Location
  • Select and Train Personnel
  • Select Inspection Method (soap bubbles, ultrasonics, calibrated hand, etc.)
  • Select Labeling Method (tags, route, locator map, etc.)

Implementing the Leak Survey:

  • Prepare a Piping Sketch or Photograph (if appropriate)
  • Take One Area at a Time to Test
  • Define Zones or Survey Areas
  • Large leaks First, then Work Toward Smaller Ones
  • Determine a Baseline (meter total leak load to quantify)
  • Perform the Survey - Look and Listen
  • Determine the Type of Leak
  • Tag Leak Location (include type of leak)
  • Note Approximate Leak Severity (small, medium, large)

Ultrasonic Leak Detectors

  • The most common and easiest method of leak locating.
  • Effective to find leaks but not an effective method to quantify them. Only an estimate (± 50%) can be made.
  • Ultrasonic leak detectors generally operate over the range of 20kHz to 100kHz.
  • Ultrasonics are effective for finding problems with:
    - Compressed Gas Leaks (argon, nitrogen, compressed air)
    - Bearing Wear
    - Electrical Discharge
    - Steam Traps

For additional information or assistance, contact Kelly Beiermann, Nebraska Public Power District.

Note: We encourage requests from Nebraska customers. Businesses outside of Nebraska will be directed to their utility for further information.

Source: Airometrix Mfg., Inc. 1999-2003