While ISO 17637 dictates how to inspect, dictates what is acceptable . Visual inspectors must categorize surface defects into specific defect groups: Defect Type Description Common Cause Cracks (100) Linear ruptures caused by localized stress. High restraint, hydrogen buildup. Undercut (501)
Used to measure precise gap widths, root openings, or undercut depths.
: To perform a direct inspection, the inspector must place their eye within 600 mm of the surface and at an angle of no less than 30 degrees . bs en 970 visual inspectionpdf best
You will find PDFs of BS EN 970 on various free document-sharing websites. We strongly advise against using these. These are typically old scanned copies of dubious quality and legality. Using a potentially outdated or altered copy of a standard in a professional or legal context is a serious risk.
Do you need a customized or checklist based on this standard? While ISO 17637 dictates how to inspect, dictates
Though only 16 pages long, the standard packed significant technical requirements into ten key clauses.
BS EN 970:1997 standard for the visual examination of fusion welds has been officially superseded by BS EN ISO 17637 Undercut (501) Used to measure precise gap widths,
Bridge Cam Gauge (GAL Gauge): Measures undercut depth, weld reinforcement, fillet leg length, and bevel angle.
The project or product specification (e.g., one referencing EN 1090 for steel structures) will mandate the specific quality level (B, C, or D) that must be met. The inspector then uses the tools and methods from to verify if any imperfections found fall within the allowed limits defined by BS EN ISO 5817 for the specified quality level.