Ready to Get Started?
Send us information on you, your company and your project. One of our experts will respond as soon as possible.
Direct Support: 0300 2799742 | info@fasttechinspection.com
Thermal Process & Engineering Controls
Post-Weld Heat Treatment (PWHT) & Preheating
Equipped with 10 multi-channel PWHT units (4 × 60 kW and 6 × 80 kW), ceramic heating elements, continuous calibrated chart recorders, and documented heating/soaking/cooling quality files.
Controlled Thermal Cycle & Field Method
PWHT applies an approved thermal cycle to welded components to relieve residual stresses, temper the metallurgical structure, and minimize brittle fracture risks. The job procedure strictly governs the heating band, thermocouple placement, heating rate, soak temperature and time, and controlled cooling.
Typical Execution Sequence:
- Review approved cycle and joint identification against client welding procedure.
- Install ceramic heating elements (finger/channel/spiral) and thermal insulation.
- Attach and verify K-type thermocouples with calibrated attachment units.
- Monitor heating, soaking, and controlled cooling continuously via digital controllers.
- Review, verify, and submit temperature recording charts for the permanent QA file.
Fleet Capacity: 10 Multi-Channel Units
Fast Tech Inspection operates 4 units rated at 60 kW and 6 units rated at 80 kW. This substantial fleet allows us to mobilize rapidly across simultaneous high-capacity industrial projects.
Supporting Equipment Fleet:
- Spiral, finger, and channel heating elements
- K-type thermocouple wires, attachment units & recorders
- Heavy-duty power cables and 300 A cam locks
- Portable field hardness testers for post-treatment verification