EEMUA 158 provides detailed guidelines on weld profiles. It specifically addresses "nodes"—the complex intersections of tubular steel—where fatigue cracking is most likely to occur. It mandates specific grinding techniques to improve the fatigue life of these connections.
| Feature | EEMUA 158 | API 510 | PD 5500 | ASME VIII Div.1 | |---------|-----------|---------|---------|----------------| | Primary focus | In-service | In-service | Design + in-service | Design only | | RBI guidance | Yes, detailed | Yes, but less prescriptive | No | No | | FFS methods | References BS 7910 | References API 579 | Annex G | Not applicable | | Inspection intervals | Risk-based (up to 10 yrs) | Max 10 yrs, but often shorter | Not defined | Not defined | | Jurisdiction | UK (PSSR) | US (OSHA, state) | UK (PSSR) | Global design | eemua 158 pdf