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  1. TECHKNOWSERV CORP. (TKS) is a leading supplier of fiberglass tank acoustic emission testing on new and in-service fiberglass reinforced plastic tanks.  Acoustic emission testing (AET) is used to inspect newly fabricated tanks during hydrostatic testing and in-service testing typically in 5-year intervals.  The object of acoustic emission testing of FRP tank are to find manufacturing and in-service defects that include delaminations, fiber breaks, matrix cracking, and fiber pullout.  Acoustic emission testing in accordance with ASTM E1067-07: Standard Practice for Acoustic Emission of Fiberglas...

  2. There are many classes of DOT steel cylinders used for medical, industrial, power generation, and gas storage, such as nitrogen, oxygen, helium, hydrogen, etc.   It is common to mount these cylinders on a trailer so that the desired gas may be delivered to the customer’s site and refilled at bulk gas storage facilities as required.  Since these tube trailers transport certain gases, compliance with U.S. DOT Pipeline and Hazardous Material Safety regulations are required.   Part of this requirement includes a minimum 5-year re-certification process that assures the tubes or cylinders are fit fo...

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