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    HOLE TYPE IQI (Penetrameter)

    Uploaded by

    Eswar Enterprises Qc

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    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd

    HOLE TYPE IQI (Penetrameter)

    Uploaded by

    Eswar Enterprises Qc
    351 views5 pages

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    © © All Rights Reserved

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    PDF, TXT or read online from Scribd

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    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    351 views5 pages

    HOLE TYPE IQI (Penetrameter)

    Uploaded by

    Eswar Enterprises Qc

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
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    6/16/2020 HOLE TYPE IQI (Penetrameter) Selection in Industrial Radiography Testing

    MECHANICAL CONSTRUCTION ENGINEER

    HOLE TYPE IQI (Penetrameter) Selection in


    Industrial Radiography Testing
    on March 24, 2017

    IMAGE QUALITY INDICATOR (IQI) OR PENETRAMETER


    SELECTION FOR INDUSTRIAL RADIOGRAPHY

    HOLE-TYPE IQI

    The logic of selection of hole type IQI is same as that for wire type
    IQI.

    Please go through the below link for the selection of hole type IQI.
    WIRE TYPE IQI (Penetrameter) Selection in Industrial Radiography

    Testing

    Refer Table T-276; of ASME BPVC Section V;

    Based on the nominal single-wall material thickness that you want to


    radiograph, select the hole type IQI.

    Example:

    https://hareeshkv.blogspot.com/2017/03/hole-type-iqi-penetrameter-selection-in.html 1/6
    6/16/2020 HOLE TYPE IQI (Penetrameter) Selection in Industrial Radiography Testing

    MECHANICAL CONSTRUCTION ENGINEER


    Suppose we want to radiograph a 7 mm thickness plate using hole
    type IQI, in film side.

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    From the table T-276 the required hole type designation is 12 (6.4
    through 9.5 in the table T-276 in film side)

    And in that, the required essential hole is 2T.

    After radiography if the radiography film shows 2T hole then we can


    say that the radiography procedure is acceptable in terms of
    sensitivity.

    Alternate IQI

    If the required IQI of hole type designation is not available the


    equivalent hole
    type IQI sensitivity is as per table T-283

    https://hareeshkv.blogspot.com/2017/03/hole-type-iqi-penetrameter-selection-in.html 2/6
    6/16/2020 HOLE TYPE IQI (Penetrameter) Selection in Industrial Radiography Testing

    MECHANICAL CONSTRUCTION ENGINEER

    For the above example; if the hole type designation of 12 is not


    available, we can use hole type designation of 17 which should show
    1T hole or we can use hole type designation 7 which should show 4T
    hole in the radiography film.

    The below table shows the Hole-Type IQI designation, Thickness


    and Hole Diameters. This table is from ASME BPVC Section V.

    Some interesting facts about Hole-Type IQI

    It is interesting to note that all the Designation Numbers directly


    relate to the thickness of the Hole Type IQI except for three, numbers
    7, 12 and 17.

    See Table T-233.1

    https://hareeshkv.blogspot.com/2017/03/hole-type-iqi-penetrameter-selection-in.html 3/6
    6/16/2020 HOLE TYPE IQI (Penetrameter) Selection in Industrial Radiography Testing

    MECHANICAL CONSTRUCTION ENGINEER

    Another feature of the Designation Number is in reference to the


    specific hole such as 1T, 2T, or 4T.

    The T is the thickness of a given IQI Designation such Number 15 for


    example. So the 1 x T hole has a diameter of 0.015”.

    Thus the 2 x T hole = 0.030”, 4 x T = 0.060”.

    However this rule does not hold for the smaller IQI Numbers 5 and 7
    which are both identical to Number 10.

    To say it another way, Numbers 5, 7 and, 10 all have the same


    diameter of 1T, 2T and 4T holes. See table T-233.1

    https://hareeshkv.blogspot.com/2017/03/hole-type-iqi-penetrameter-selection-in.html 4/6
    6/16/2020 HOLE TYPE IQI (Penetrameter) Selection in Industrial Radiography Testing

    MECHANICAL CONSTRUCTION ENGINEER

    Further Suggested Reading:

    1. https://youtu.be/tNFtM6pu_TA

    2. Wire-Type IQI

    3. https://youtu.be/-OWoBv8LM88

    Enter your comment...

    Sanying Pr

    High-resolution in
    scan.
    Sanying Precision

    https://hareeshkv.blogspot.com/2017/03/hole-type-iqi-penetrameter-selection-in.html 5/6

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