Volume 7, Issue 8 (September 2010)

    Guided Side-Bend: An Alternative Qualification Method for Butt Fusion Joining of Polyethylene Pipe and Fittings

    (Received 6 November 2009; accepted 16 July 2010)

    Published Online: 2010

    CODEN: JAIOAD

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    Abstract

    Historically, the procedure for butt fusion joining of polyethylene pipe has been qualified on the basis of two fundamental tests that are widely recognized within the industry. These are the tensile-impact (T-I) test method found in ASTM F2634-07 and the reverse-bend (RB) or bend-back test as described in ASTM F2620-06. Both of these test methods have been extensively utilized within the industry, and both have some specific limitations as it relates to qualification of butt fusion joining conducted in the field. ASTM F2634-07 is a highly sophisticated testing method involving precision instrumented laboratory equipment. This makes it impractical for an on-site qualification for butt fusion procedures in the field. The bend-back test, on the other hand, lends itself to field implementation, but as the method is applied to a larger diameter, heavy-walled pipe, the practicality of performing the test and safety considerations become a limiting factor. This paper will examine an alternative test method referred to as guided side-bend or full-face testing that appears very promising as an alternative to the RB test as described in ASTM F2620-06. The test method will be fully described, and data will be presented comparing T-I results and traditional bend-back results to those obtained using the side-bend test method. The discussion of the test results and safety considerations of the proposed test method will be addressed, and conclusions will be drawn regarding its future applicability.


    Author Information:

    Sandstrum, Steve
    ISCO Industries LLC, Louisville, KY

    Burwell, Dudley
    ISCO Industries LLC, Louisville, KY

    McGriff, Steve
    ISCO Industries LLC, Louisville, KY

    Craig, Jim
    McElroy Manufacturing, Tulsa, OK

    Svetlik, Harvey
    Independent Piping Products, Dallas, TX


    Stock #: JAI102841

    ISSN: 1546-962X

    DOI: 10.1520/JAI102841

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    Author
    Title Guided Side-Bend: An Alternative Qualification Method for Butt Fusion Joining of Polyethylene Pipe and Fittings
    Symposium Symposium on Plastic Pipe and Fittings: Yesterday, Today, and Tomorrow, 2009-11-09
    Committee F17