Duties of a <b>Welding</b> Inspector

It is the Duty of a welding inspector to ensure that all operations concerning welding are carried out in strict according with written, or agreed practices, or specifications.
This will include monitoring or checking a number of operation including:

Before Welding
Safety:
Ensure that all operations are carried out in complete complience with local company, or National safety legislation(i.e. permits to work are in place).

Documentation
Specification (Year and revision)
Drawing (Correct revisions)
Welding procedure specification and welder approvals
Calibration certification (Welding equipment/ancillaries and all inspection instrument)
Material and cionsumable certification

Welding Process and Ancillaries
Welding equipment and all related ancillaries (Cable, regulator, ovens, quivers, etc)

Incoming Consumable
All pipe/plate and welding consumable for size, type and condition.

Marking out preparation and set up:
Correct nethod of cutting weld prepararions (pre heat for thermal cutting if applicable)
Correct preparation (Relevant bevel angles, root face, root gabe, root radius, land, etc)
Correct pre-welding distortion control (Tacking, bridging, jigs, line up clamps, etc)
Correct pre heat applied prior to tack welding
All tack to be monitored and inspected.

During Welding
Pre-heat values (Heating methode, location and control)
In-process distortion control (Squence or balanced welding)
Consumable control (Specification, size, condition, and any special treatment)
Process type and all related variable parameters (Voltage, amperege, travel speed)
Purging gases (Type, pressure/flow and control methode)
Wedling condition for root run/hot pass and all subsequent run, and inter0run ceaning)
Minimum, or maximum inter-pass temperature (Temperature and controling methode)
Complience with all other variables sated on the approved welding procedure

After Welding
Visual inspection of the welded joint (including dimensional aspects)
NDT requirements (Methode and qualification of operator, and excecution)
Identify repairs from assesment of visual or and NDT reports (Refer to repair below)
Post weld heat treatment (PWHT) (Heating method and temperature recording system)
Re-inspect with visual/NDT after PWHT (if applicable)
Hydrostatic test procedures (For pipelines or pressure vessels)

Repairs
Excavation procedure (Approval and execution)
Approval of NDT procedures (For assessment of complete defect removal)
Repair procedure (Approval or re-welding procedures and welder approval)
Execution of approved re-welding procedure (Complience with repair procedure)
Re-inspect the repair area with visual inspection and approved NDT methode.

Submission of inspection reports, and all related documents to the Q/C departement.