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    7.5b PPT

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    Mahmoud Hagag
    The document discusses damage mechanisms (DMs) from API 571, focusing on loss of wall thickness (LOWT) DMs. It notes there are around 66 total DMs, which can be grouped into 4 sets related to LOWT. Specific LOWT DMs are refinery-specific and caused by process chemicals like acids, with acidic corrosion typically resulting in uniform LOWT. Factors that affect acidic LOWT corrosion include pH.

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    7.5b PPT

    Uploaded by

    Mahmoud Hagag
    2 views4 pages
    The document discusses damage mechanisms (DMs) from API 571, focusing on loss of wall thickness (LOWT) DMs. It notes there are around 66 total DMs, which can be grouped into 4 sets related to LOWT. Specific LOWT DMs are refinery-specific and caused by process chemicals like acids, with acidic corrosion typically resulting in uniform LOWT. Factors that affect acidic LOWT corrosion include pH.

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    The document discusses damage mechanisms (DMs) from API 571, focusing on loss of wall thickness (LOWT) DMs. It notes there are around 66 total DMs, which can be grouped into 4 sets related to LOWT. Specific LOWT DMs are refinery-specific and caused by process chemicals like acids, with acidic corrosion typically resulting in uniform LOWT. Factors that affect acidic LOWT corrosion include pH.

    Copyright:

    © All Rights Reserved
    Download as PPT, PDF, TXT or read online from Scribd
    Download as ppt, pdf, or txt
    2 views4 pages

    7.5b PPT

    Uploaded by

    Mahmoud Hagag
    The document discusses damage mechanisms (DMs) from API 571, focusing on loss of wall thickness (LOWT) DMs. It notes there are around 66 total DMs, which can be grouped into 4 sets related to LOWT. Specific LOWT DMs are refinery-specific and caused by process chemicals like acids, with acidic corrosion typically resulting in uniform LOWT. Factors that affect acidic LOWT corrosion include pH.

    Copyright:

    © All Rights Reserved
    Download as PPT, PDF, TXT or read online from Scribd
    Download as ppt, pdf, or txt
    of 4

    DAMAGE MECHANISMS

    These are the DM groupings of API 571

    LOWT
    These total about 66
    separate DMs
    In API 571

    MATTHEWS INTEGRITY HUB


    DAMAGE MECHANISMS

    Loss of wall thickness


    (LOWT) DMs of API 5711

    You can
    think of
    2
    them as 4
    sets
    3

    4
    MATTHEWS INTEGRITY HUB
    DAMAGE MECHANISMS

    These LOWT DMs


    are refinery-specific

    • See API 571 Sec 5

    • More complex DMs

    • Caused by process
    chemicals(mainly
    acids)

    MATTHEWS INTEGRITY HUB


    DAMAGE MECHANISMS

    pH
    Factors affection
    acidic LOWT
    corrosion

    Acidic corrosion gives fairly uniform LOWT

    MATTHEWS INTEGRITY HUB

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