1. Duties and Responsibilities
Welding Inspector
Duties and Responsibilities
Section 1
4/23/2007

2. Main Responsibilities 1.1
Code compliance
Workmanship control
Documentation control
4/23/2007

3. Personal Attributes 1.1 Honesty Integrity Knowledge Good communicator
Important qualities that good Inspectors are expected to have are:
Honesty
Integrity
Knowledge
Good communicator
Physical fitness
Good eyesight
4/23/2007

4. Standard for Visual Inspection 1.1 Basic Requirements
BS EN Non-destructive examination of fusion welds - Visual examination
Welding Inspection Personnel should:
be familiar with relevant standards, rules and specifications applicable to the fabrication work to be undertaken
be informed about the welding procedures to be used
have good vision (which should be checked every 12 months)
4/23/2007

5. Conditions for Visual Inspection (to BS EN 970)
Welding Inspection 1.2
Conditions for Visual Inspection (to BS EN 970)
Illumination:
350 lux minimum required
(recommends 500 lux - normal shop or office lighting)
Vision Access:
eye should be within 600mm of the surface
viewing angle (line from eye to surface) to be not less than 30°
30°
600mm
4/23/2007

6. Aids to Visual Inspection (to BS EN 970)
Welding Inspection 1.3
Aids to Visual Inspection (to BS EN 970)
When access is restricted may use:
a mirrored boroscope
a fibre optic viewing system
Other aids:
welding gauges (for checking bevel angles, weld profile, fillet sizing, undercut depth)
dedicated weld-gap gauges and linear misalignment (high-low) gauges
straight edges and measuring tapes
magnifying lens (if magnification lens used it should have magnification between X2 to X5)
usually by agreement }
4/23/2007

7. Welding Inspectors Equipment 1.3
Measuring devices:
flexible tape, steel rule
Temperature indicating crayons
Welding gauges
Voltmeter
Ammeter
Magnifying glass
Torch / flash light
Gas flow-meter
4/23/2007

8. Welding Inspectors Gauges 1.3
Fillet Weld Gauges
G.A.L.
S.T.D.
10mm
12mm
16mm
3mm
6mm
9mm
5mm
4mm L T
HI-LO Single Purpose Welding Gauge 1 2 3 4 5 6 60 50 40
1/4
1/2
3/4 1 5 10 15 20 IN MM
TWI Multi-purpose Welding Gauge
Misalignment Gauges
Hi-Lo Gauge
4/23/2007

9. Welding Inspectors Equipment 1.3
Voltmeter
Ammeter
Tong Tester
4/23/2007

10. Welding Inspection 1.3 Stages of Visual Inspection (to BS EN 970)
Extent of examination and when required should be defined in the application standard or by agreement between the contracting parties
For high integrity fabrications inspection required throughout the fabrication process:
Before welding
(Before assemble & After assembly)
During welding
After welding
4/23/2007

11. Typical Duties of a Welding Inspector 1.5
Before Welding
Preparation:
Familiarisation with relevant ‘documents’…
Application Standard/Code - for visual acceptance requirements
Drawings - item details and positions/tolerances etc
Quality Control Procedures - for activities such as material handling, documentation control, storage & issue of welding consumables
Quality Plan/Inspection & Test Plan/Inspection Checklist - details of inspection requirements, inspection procedures & records required
4/23/2007

12. Typical Duties of a Welding Inspector 1.5
Before Welding
Welding Procedures:
are applicable to joints to be welded & approved
are available to welders & inspectors
Welder Qualifications:
list of available qualified welders related to WPS’s
certificates are valid and ‘in-date’
4/23/2007

13. Typical Duties of a Welding Inspector 1.5
Before Welding
Equipment:
all inspection equipment is in good condition & calibrated as necessary
all safety requirements are understood & necessary equipment available
Materials:
can be identified & related to test certificates, traceability !
are of correct dimensions
are in suitable condition (no damage/contamination)
4/23/2007

14. Typical Duties of a Welding Inspector 1.5
Before Welding
Consumables:
in accordance with WPS’s
are being controlled in accordance with Procedure
Weld Preparations:
comply with WPS/drawing
free from defects & contamination
Welding Equipment:
in good order & calibrated as required by Procedure
4/23/2007

15. Typical Duties of a Welding Inspector 1.5
Before Welding
Fit-up
complies with WPS
Number / size of tack welds to Code / good workmanship
Pre-heat
if specified
minimum temperature complies with WPS
4/23/2007

16. Typical Duties of a Welding Inspector 1.5
During Welding
Weather conditions
suitable if site / field welding
Welding Process(es)
in accordance with WPS
Welder
is approved to weld the joint
Pre-heat (if required)
minimum temperature as specified by WPS
maximum interpass temperature as WPS
4/23/2007

17. Typical Duties of a Welding Inspector 1.6
During Welding
Welding consumables
in accordance with WPS
in suitable condition
controlled issue and handling
Welding Parameters
current, voltage & travel speed – as WPS
Root runs
if possible, visually inspect root before single-sided welds are filled up
4/23/2007

18. Typical Duties of a Welding Inspector 1.6
During Welding
Inter-run cleaning
in accordance with an approved method (& back gouging) to good workmanship standard
Distortion control
welding is balanced & over-welding is avoided
4/23/2007

19. Typical Duties of a Welding Inspector 1.6
After Welding
Weld Identification
identified/numbered as required
is marked with welder’s identity
Visual Inspection
ensure weld is suitable for all NDT
visually inspect & ‘sentence’ to Code requirements
Dimensional Survey
ensure dimensions comply with Code/drawing
Other NDT
ensure all NDT is completed & reports available
4/23/2007

20. Typical Duties of a Welding Inspector 1.6
After Welding
Repairs
monitor repairs to ensure compliance with Procedure, ensure NDT after repairs is completed
PWHT
monitor for compliance with Procedure
check chart records confirm Procedure compliance
Pressure / Load Test
ensure test equipment is suitably calibrated
monitor to ensure compliance with Procedure
ensure all records are available
4/23/2007

21. Typical Duties of a Welding Inspector 1.6
After Welding
Documentation
ensure any modifications are on ‘as-built’ drawings
ensure all required documents are available
Collate / file documents for manufacturing records
Sign all documentation and forward it to QC department.
4/23/2007

22. Summary of Duties A Welding Inspector must:
It is the duty of a Welding Inspector to ensure all the welding and associated actions are carried out in accordance with the specification and any applicable procedures.
A Welding Inspector must:
Observe
To observe all relevant actions related to weld quality throughout production.
Record
To record, or log all production inspection points relevant to quality, including a final report showing all identified imperfections
Compare
To compare all recorded information with the acceptance criteria and any other relevant clauses in the applied application standard
4/23/2007