ANSI SCTE 178-2019 pdf free download – Test Method for Cable Weld Integrity.
1. Introduction
1.1. Scope
This test procedure provides methods for evaluating and determining defects along the welded seam ofcoaxial cables whosc outer conductor shield is constructed of a welded,aluminum or copper strip. Thisprocedure may be used to inspect finished coaxial cable’s outer conductor; either smooth or corrugated.
Note: For instances where the bond of the dielectric to outer metallic sheath is too aggressive for removal,a cone-expansion test method section 5.0 is offered as an alternative.
1.2. Benefits
The use of these techniques will provide a standardized method to properly evaluate welded, seam coaxialcable performance. It will also provide a standard means of making comparisons between the performanceof various coaxial cable manufacturers.
1.3. Intended Audience
The intended audience for this specification, are manufactures, evaluation laboratories, and end-users withproper laboratories and equipment to perform this test described therein.
1.4. Areas for Further Investigation or to be Added in Future VersionsAt this time, there are no considerations being giving for further investigation.
2. Normative References
The following documents contain provisions, which, through reference in this text, constitute provisions ofthis document. At the time of Subcommittee approval, the editions indicated were valid. All documents aresubject to revision; and while parties to any agreement based on this document are encouraged to investigatethe possibility of applying the most recent editions of the documents listed below, they are reminded thatnewer editions of those documents might not be compatible with the referenced version.
2.1. SCTE References
No normative references are applicable.
2.2. Standards from Other Organizations. No normative references are applicable.
2.3. Published Materials
No normative references are applicable.3.Informative References
The following documents might provide valuable information to the reader but are not required whencomplying with this document.
3.1. Standards from Other Organizations
• No informative references are applicable.
3.2. Published Materials
• No informative references are applicable.
6. Equipment
The following equipment is needed in order to perform the weld integrity test with dye penetrant. In some instances, a manufacturer or part number may be provided for example or reference. This does not exclude the use of equivalent materials from alternative suppliers. See equipment listed below.
• Coaxial cable cutters, Jacket removal tool, or utility knife
• Shop cloths or cotton rags / towels
• Band or Scroll saw
• Solvent / Degreaser (example – Magaflux® Spotcheck® SKC-S Cleaner / Remover or equivalent)
• Penetrant (example – Magaflux® Spotcheck® SKL-SP1 Penetrant or equivalent)
• Developer (example – Magaflux® Spotcheck® SKD-S2 Developer or equivalent)
• Vented fume hood or a well-ventilated work area
• Arbor Press or Compression Tester
• Expansion Cones (Specific diameters / angles for finished cable sizes – See appendix)
• Cable Preparation / Coring Tools
Note: Carefully read and review all instructions with the chemical agents, assuring that safety precautions
are observed and followed.
7. Dye Penatrant Method
7.1. Sample Preparation
• Obtain the necessary welded outer conductor cable samples as required. Sample length should be a minimum of 18 inches (457 mm)
• Provide a smooth, flush cut on each end of the sample, using a scroll or band saw.
• Place end-cap on end or seal via alternative method to prevent dye penetrant from compromising the sample(s) from the cut ends.
• Ensure outer surface of samples are free from foreign materials, paint, grease, oils, etc.
• 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 Figure 1.ANSI SCTE 178 pdf download.