Welding inspector are personals who verify the work produced by welders meets specification and guidelines.
Welding inspectors perform visual inspections on welded products while visual inspections are used to look more for defects in welds (such as cracks, pits, porosity and other inclusions in welds).
Duties of Welding inspector:
- Review and understand the relevant portions of the project specifications, contract documents and shop drawings.
- Review material test reports prior to shop manufacturing for all main member and designated connection base material to meet project requirements.
- Verify the availability, current and accuracy of all applicable welding, welding operator and tack welding qualifications.
- Require requalification of any welder, welding operator or tack welder that has not used the welding process for a period of six months.
- Check the identification and qualification of the welder. Verify that any additional qualification tests and joint mock-ups have been passed.
- To identify your welds, verify that each welder has a unique identification mark or die stamp.
- Verify that all applicable Welding Procedure Specifications, with Procedure Qualification records as needed, are available and current.
- Check that an approved Welding Procedure Specification (WPS) has been provided and that the WPS has been reviewed by each welder performing the weld.
- Check the identification of base materials against approved shop drawings and specifications.
- Verify the specification sheets for the electrode, flux and shielding gas to comply with the contract documents.
- Verify welding consumables comply with approved shop drawings and the approved WPSs
- Check that the electrodes are only used in the permitted positions and within the WPS specified welding parameters.
- Observe joint preparation, assembly practice, preheat temperatures, interpass temperatures, welding techniques, welding performance and any post weld heat treatment at appropriate intervals to ensure that the applicable WPS and Code requirements are met.
- Check that the welding equipment’s current and voltage are in accordance with the WPS, if necessary, by using a handheld, calibrated, amp and volt meter at appropriate intervals. Strom and voltage should be measured near the arc with this equipment.
- Inspect the work to ensure compliance with the specified weld acceptance criteria. Size and contour of welds should be measured with suitable gauges. A strong light, magnifiers, or other devices, as needed, may be used to aid visual inspection.
- Schedule NDT technicians in a timely manner after completion of the visual inspection and cooling of the assembly. The Contract Documents may require a delay period for final acceptance of QA.
- The Nondestructive Testing should not be carried out sooner than 24 hours after completion of the repair welding and cooling to ambient temperature for repair welding.
- Mark the welds, parts and joints inspected and accepted with a distinctive mark or die stamp, or keep records of the specific welds inspected by each individual.
- Document in a written report the items accepted and rejected. The report should be forwarded in a timely manner to the designated recipients.