Duties of a Welding Inspector

Discuss the following
Before Welding
1) Safety: Legislation and safe working practices
2) Documentation: Spec. Drawings. Procedures, Welder approvals Certificate, Mill sheets
3) Welding Process and ancillaries: Equipment. Cables, Regulators. Ovens. Quivers. Etc
4) Incoming Consumables: Materials/Welding Consumables (Size. Condition. Specification. Storage)
5) Marking out preparation & Set up: Method . Angels / Root face / Gap Values. Distortion control. Pre heat prior to tack welding if applicable.

During Welding
1) Pre Heating ( Method and control)
2) In Process distortion control (Balance or sequence welding)
3) Consumable control (Correct baking and storage prior to use)
4) Welding process (Related parameters i.e. Volts / Amps.Gas flow rate)
5) Minimum /Maximum inter-pass temperatures
6) Full compliance with all elements given on the WPS

After Welding
1) Visual Inspection
2) Non Destructive Testing
3) Repairs
4) Repair procedures(NDT/Excavation/Welder approval)
5) PWHT
6) Hydro-static testing
7) Submission of all inspection reports to QC departments

RESPONSIBILITIES OF A WELDING INSPECTOR
1) To Observe : Activities & Imperfections
2) To Record: Activities & Imperfections
3) To Compare: Activities & Imperfections

Attributes of an effective Welding Inspector
1) Honest
2) Literate
3) Respected
4) Dedicated
5) Impartial
6) Observant
7) Decisive
8) Analytical
9) Knowledgeable
10) Experienced
11) Record Keeping skills
12) Communication Skills
13) Safety conscious
14) Inquisitive
15) Responsible
16) Diplomatic Skills

A Welding Inspectors Toolbox
A welding inspector tool box should contain
A welding Gauge(Cambridge Style, Or high low gauges etc)
A tape measure and scale
A wire brush
A magnifying glass
A torch and mirror
A specification, pen and report, or note paper
Any other aids to visual inspection


SPECIALISED AIDS FOR INSPECTION
Inspection may utilize the following specialized equipment:
Boro- scopes (For assessing root runs in small pipes)
Flow-meter (For measuring gas flow rates in MIG/MAG/TIG)
Simple NDT Equipment ( Penetrants and MPI)
Complex NDT equipment (Radiography or Ultrasonics)
NOTE: BOTH simple and complex NDT methods requires the specialized skills of qualified operators/technicians

Posted by: Zaman