ANSI SCTE-178-2011 pdf download Test Method for Cable Weld Integrity
3.0 DYE PENATRANT METHOD
3.1 SAMPLE PREPARATION
3.1.1 Obtain the necessary welded outer conductor cable samples as required. Sample length should be a minimum of 18 inches (457mm) 3.1.2 Provide a smooth, flush cut on each end of the sample, using a scroll or band saw.
3.1.3 Place end-cap on end or seal via alternative method to prevent dye penetrant from compromising the sample(s) from the cut ends.
3.1.4 Ensure outer surface of samples are free from foreign materials, paint, grease, oils, etc…
3.1.5 Pre-clean samples by liberally applying solvent / cleaner; i.e. SKC-S Cleaner / Remover. Repeat this step and dry thoroughly with a clean cloth as shown in Figure1.
3.2 TEST PROCEDURE
3.2.1 Apply penetrant liberally to the outer conductor surface ensuring the weld seam is coated. The penetrant can be applied via spray or brush. If penetrant pulls back into droplets, re-clean or wipe with solvent / cleaner and repeat application of penetrant.
3.2.2 Allow penetrant to remain on part for a minimum of 5 minutes, 10 minutes maximum. Extended exposure to the penetrant will not affect the results.
3.2.3 After sufficient time has been allowed, gently wipe the penetrant from the outer surface of the samples with a clean cloth or towel as seen in Figure 2. Remove excess surface penetrant with clean cloth, pre-moistened with the solvent / cleaner. DO NOT flush the surface with the cleaner. This will alter the results of the test.
3.2.4 After samples has been cleaned, using a band or scroll saw, cut sample approximately in half along the longitudinal axis of the cable. Ensure that the cut is relatively 90° perpendicular to the weld seam Remove the dielectric from the half of the sample which contains the weld seam. Care should be taken to not place unnecessary stress on the weld area as shown in Figure 3. Some cables that are bonded more aggressively than others may require a heat gun to remove the dielectric from the weld seam to keep from placing unnecessary stress and flex to the sample weld area
ANSI SCTE-178-2011 pdf download
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