Insulated tanks and vessels
CUI screening on jacketed shells, near critical areas such as bases and stiffening rings.
Synvor × INCO Tech · Pulsed Eddy Current
Inspect corrosion. Without removing insulation.
INCOS-C01: pulsed eddy current for wall-thickness and CUI screening on pipes, vessels and tanks — through metal jacketing, with no couplant and with the component in service.
- −30 to 500 °C
- component
- 1–25 mm
- carbon steel
- ≥ DN15
- pipe size
Through insulation
Data acquired over the metal jacketing, without removing mineral wool or cladding.
No couplant
Electromagnetic coupling: no gel, no water, no surface preparation.
−30 °C to 500 °C
Assessment of hot lines in service, with no shutdown for cooling.
Ex db IIB T4 Gb
Ex marking declared by the manufacturer. ATEX/IECEx certificate to be confirmed per market.
Manufacturer demonstration test
3 simulated pits, 45 mm of insulation, 3 indications on the map
Carbon-steel pipe with machined pits, covered by ~45 mm of insulation and metal jacketing. The probe scans over the jacketing; the thickness map shows the three metal-loss areas at their actual positions.
Bench test with simulated defects. Field performance depends on geometry, insulation and jacketing.
Field applications
Process piping
Bends, vertical runs and hot lines, from DN15 (½") depending on the probe.
Integrity programmes (RBI)
Average wall-thickness mapping to prioritise where to strip insulation and confirm by UT.
Technical specifications
Data declared by the manufacturer.
| Principle | Pulsed eddy current (PEC) |
|---|---|
| Materials | Carbon steel, 16MnR, alloy steels (ferromagnetic); stainless steel, aluminium (non-ferromagnetic) |
| Surface preparation | Not required |
| Pipe diameter | ≥ DN15 |
| Component temperature | −30 °C to 500 °C |
| Thickness range | 1–25 mm (carbon steel) · 1–75 mm (stainless) |
| Accuracy | Average error up to 2% of wall thickness |
| Pulse frequencies | 0.5 · 1 · 2 · 4 · 8 · 32 · 64 Hz |
| Ex protection | Ex db IIB T4 Gb |
| Dimensions | 301 × 219 × 138 mm |
| Weight | 6.86 kg |
| Battery | Internal LiFePO4, ≥ 8 h continuous; service life 4–5 years |
| Data transfer | Wireless |
| Operating temperature | −30 °C to 70 °C |
| Power supply | 14.6 V, 1 A |
Method limitations
- PEC reports the average wall thickness over the probe footprint; it does not replace UT spot measurement.
- Small isolated pits may fall below resolution; confirm indications with a complementary method.
- Insulation thickness, jacketing type and geometry affect the signal; the application should be validated before purchase.
- Code compliance depends on the customer's qualified procedure. Synvor supplies the equipment and technical support; we do not perform inspections.
Reference standards and codes
- ISO 20669:2017 — pulsed eddy current testing of ferromagnetic metallic components.
- API RP 583 — corrosion under insulation and fireproofing — management and screening.
- ASME BPVC Section V, Article 8 — eddy current examination, including PEC in a mandatory appendix.
- ISO 15549:2019 — general principles of eddy current testing.
Technical framework of the method. The instrument is not "ISO certified": test compliance depends on the customer's qualified procedure and certified personnel (ISO 9712).
Send us the component data. We validate the application.
Initial reply within 1 business day · technical proposal within 48 hours.