Welding Management
Documentation hierarchy
| Document | Standard | Purpose |
|---|---|---|
| WPS — Welding Procedure Specification | ASME IX / ISO 15609-1 | The controlled instruction issued to the workface |
| PQR — Procedure Qualification Record | ASME IX / ISO 15614-1 | Mechanical test proof that the WPS produces sound welds |
| WQT — Welder Qualification | ASME IX QW-300 / ISO 9606-1 | Proof the individual welder can execute that WPS in range |
| Welder Register & Continuity | ISO 9606-1 | Six-monthly continuity; expired welders are locked out |
| Weld Map / Numbering Plan | Project specific | Every joint numbered and located — no anonymous welds |
| Consumable Control | AWS A5 / ISO 3834-2 | Batch traceability, baking, quivering, issue and return |
| Ferrite / PMI Records | ASTM E562 / ASTM A751 | Duplex ferrite balance and positive material identification |
| PWHT Records | ASME VIII / ASME IX | Calibrated chart records where heat treatment is specified |
Metallurgical Control
Stainless steel integrity controls
- Dedicated stainless bay with stainless-only discs, brushes, clamps and slings — no carbon migration
- Plate delivered PVC-coated where practical; coating retained until final fit-up
- Full inert back-purge with oxygen verified below 50 ppm before root deposition
- Heat input and interpass limits enforced to prevent sensitisation and sigma-phase formation
- Duplex ferrite verified within the 35–65% acceptance band (ASTM E562)
- Pickling and passivation to ASTM A380 / A967, verified by ferroxyl or copper sulphate test
- PMI by XRF on 100% of stainless parent material and filler batches
Non-Destructive Testing
NDT methods and application
NDT is executed by SANAS-accredited or client-approved inspection bodies, with technicians certified to ISO 9712 / SNT-TC-1A Level II as a minimum. Scope and extent are defined in the project Inspection and Test Plan and agreed before fabrication release.
| Method | Standard | Typical Application |
|---|---|---|
| Visual Inspection | ISO 17637 / AWS D1.1 | 100% of welds, fit-up and final |
| Radiography (RT) | ASME V / ISO 17636 | Butt welds in pressure and critical piping |
| Ultrasonic (UT) | ASME V / ISO 17640 | Full-penetration structural and plate welds |
| Magnetic Particle (MT) | ISO 17638 | Carbon steel fillet and attachment welds |
| Dye Penetrant (PT) | ISO 3452-1 | Stainless steel and duplex welds |
| Coating Inspection | ISO 19840 / SSPC | DFT, adhesion pull-off, holiday detection |
Safety, Health & Environment
Zero harm as a design requirement
| Commitment | How It Is Managed |
|---|---|
| Zero Fatalities, Zero Permanent Disabling Injuries | Non-negotiable target, driven from board level |
| Monthly Reporting | TRIFR, LTIFR, near-miss frequency and leading-indicator participation |
| Risk Control | Working at height, confined space, hot work, lifting and structural collapse regimes |
| Hazardous Substances | SDS register with exposure control for acid and solvent handling |
| Emergency Response | Muster, medical, spill, fire and site-specific scenarios with drill records |
| Environment | Effluent containment, waste segregation and rehabilitation on demobilisation |
Management System
Certification and code framework
ISO 9001:2015
Quality Management System
ISO 45001:2018
Occupational Health & Safety
ISO 14001:2015
Environmental Management
ISO 3834-2
Comprehensive Welding Quality
ASME IX / ISO 15614-1
Procedure Qualification
ASME B31.3
Process Piping Design & Fabrication
API 650 / EN 14015
Welded Storage Tankage
ISO 9712 / SNT-TC-1A
NDT Personnel Certification