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Before Welding
- Availability of Welding Procedure Specification (WPS), Work Procedure, Quality Assurance Plan, Working Documents (WD)
- Joint identification, fit-up groove design, fit up dimensions
- Method of fit-up (i.e clear requirements)
- Accessibility for welding, welding platforms
- Provision of window opening in fit up groove (if required)
- DE-preservation & cleanliness of joint
- Cleaning of pipe inside
- Proper supporting of joint
- Fit up clearance report
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- Availability of calibrated welding machines & baking ovens
- Purging arrangement including dam type and location
- Purity and type of purging gas
- Preheating arrangements (if required)
- Filler material color coding, identification and baking arrangement
- Welding sequence
- Qualified welder
- Separately identified tools & tackles, in case of SS material
- Proper shielding/wind protection arrangements for joint
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