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® Verify the entire length of each seam is tested in accordance with the technical <br /> specifications. <br /> ® Observe all testing and independently record results on the panel/seam log and the panel <br /> layout drawing. <br /> ® Identify any failed areas detected by the installer by marking the area with a waterproof <br /> marker; verify the installer is aware of the required repair, and record completion of the <br /> repair on the repair log. <br /> ® Verify all repairs are completed and tested in accordance with the project technical <br /> ' specifications. <br /> a Record non-destructive testing of the repairs on the repair log. <br /> Spark Testing <br /> Spark testing will be used to test welds around liner penetrations where vacuum testing cannot be <br /> performed due to space limitations. As per part 3.15 of section 02779 of the specifications, this <br /> requires the installer to place a copper wire within '/4-inch of the outside edge of the extrusion welds <br /> around the liner penetration. The installer will then pass a low-amperage electric detector,20,000 to <br /> 30,000 volt, with brush-type electrode capable of causing visible arc up to 3/4 inch from copper <br /> wire. During liner penetration welding and testing,the CQA monitor will: <br /> ® Observe that a 24-gauge copper wire is installed within the extrusion welds <br /> ® Observe for sparks while the brush of the electric detector is passed over 100% of the <br /> welds <br /> ' ® Observe repair and retest in areas where a spark is detected. <br /> 5.2.10 Destructive Seam Sampling and Field Testing <br /> ' The purpose of destructive seam sampling and testing is to assure seam quality. A minimum of <br /> two seam specimens (two each for peel and shear) must'be taken at the beginning and end of <br /> each seam for destructive testing. In addition one specimen must be obtained from each butt <br /> seam for peel testing. However, additional specimens may be taken if the CQA monitor suspects <br /> that a seam does not meet specification requirements. Reasons for taking additional samples <br /> may include, but are not limited to: <br /> ® Wrinkling in seam area. <br /> ® Excess crystallinity. <br /> ' ® Suspect seaming equipment or techniques. <br /> ® Weld contamination. <br /> ' ® Insufficient overlap. <br /> ® Adverse weather conditions. <br /> a Failing tests. <br /> CH CQA Plan 041712 Rev2a.doc 5-9 Construction QuaMyAssurance Plan <br />