DIRECT ANSWERThe approved welding route must address material and thickness, joint design, bevel and fit-up, consumables, preheat/interpass control, sequence, heat input, distortion, NDE timing and any PWHT.
Thick-wall welding plan
- Material condition, carbon-equivalent concerns and joint restraint
- Bevel, alignment and consumable control
- Preheat, interpass, heat input and sequence
- NDE timing, repair route and PWHT
Relevant manufacturing capability
- Material identification and traceability control
- Qualified welding and heat-treatment process planning
- NDE, repair and manufacturing-record closeout
Key notes
- Do not prescribe preheat or delayed examination from product name alone.