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Pipe Sampling and Evaluations


Pipe Analysis Features

  • Pipe sample is sectioned and media blasted to remove solids and allow for visual inspection

  • Inspection and analysis determines type of corrosion, remaining pipe wall thickness, and calculated corrosion rate in mils per year (mpy)

  • Comprehensive Analysis Report includes photographs of pipe sample before and after media blasting

  • Pipe Analysis Benefits

  • Most cost effective method of corrosion analysis for fire sprinkler systems

  • Determines root cause and severity of corrosion activity

  • Customized corrosion management recommendations provide action plan to prevent future corrosion failures

  • Provides proactive risk management plan instead of maintaining reactive repair and replacement program

  • ECS provides evaluation and analysis of corroded fire sprinkler pipe to address two (2) different needs:

     
    1. Failure Analysis – in this type of analysis a sample of failed sprinkler pipe from a fire sprinkler system that has experienced a leak is dissected and cleaned to determine the most likely cause for the failure (leak).

    2. Useful Life Analysis– in this type of analysis a sample of sprinkler pipe is extracted from the fire sprinkler system to determine the level of corrosion (metal loss) that has occurred as part of a risk evaluation on the system. This type of analysis is generally done as part of a corrosion assessment on the fire sprinkler system to determine which piping must be replaced as part of a remediation plan. The FM Global standards for pipe replacement recommendations are generally used with this analysis.

    pipe sampling

    Sectioned and Partially Bead Blasted Black Steel Pipe

    Corroded Fire Sprinkler

    Sectioned and Bead Blasted Galvanized Pipe


    In both of these evaluations a report containing the following information regarding the pipe sample is generated:


    • Pictures before and after dissecting and cleaning
    • Pictures of the point of failure
    • Maximum pit depth of the metal loss
    • Metal loss characteristics
    • Most likely cause for the corrosion that has occurred
    • Recommendation for remediation and mitigation
    Wall loss and pit analysis determines replacement recommendations

    Wall loss and pit analysis determines replacement recommendations

    ECS also provides a more detailed failed fire sprinkler pipe analysis that specifically looks for material defect in the manufacture of the fire sprinkler piping:


    Metallographic Failure Analysis – in this type of analysis a sample of failed sprinkler pipe is evaluated at the granular level using scanning electron microscopy to look for material defect within a cross-section of the metal itself. In addition to the information provided in failure/useful life analysis, a metallographic evaluation includes the following information regarding the metal analysis:
    1. Optical and electron microscopy
    2. Materials characterization
    3. Failure analysis