Maxwell PECT Pulsed Eddy Current Inspection System

Description

Maxwell PECT Pulsed Eddy Current Corrosion Inspection System

The Maxwell PECT instrument is designed for the inspection of carbon steel and low-alloyed steels, which are magnetic. For magnetic test specimens, the eddy currents are concentrated on the surface directly after the magnetic pulse. Subsequently, the eddy currents diffuse into the test specimen, until the backwall is “found”. This results in a characteristic shape A-scan: a straight line, corresponding to the diffusion of the eddy currents, followed by curved section when the backwall is sensed. Weighing in at 7.5 kg (16.5lbs), including the batteries, the Maxwell system is highly portable; and with a typical battery life of 8 hours is an ideal inspection partner in the field.

Features

A maximum surface temperature of up to 1020 °F (550 °C)
Superior signal to noise ratio
Large range in wall thickness, up to 2″ (50mm) and insulation thickness combined, hence well suited to vessel inspection not just piping/pipelines
Maximum Lift-Off range is 0-10” (0 – 250 mm)
Four standard probes, each for a different lift-off range. The probes are optimized for defect sensitivity. Underwater probe sets are available covering different depth rating and lift-off ranges
Extremely robust design delivers outstanding performance under the typical rigours associated with on-site inspection
Standard set is splash water tight, salt and fog resistant, meets IP65
Intuitive software has been developed with the NDT technician in mind, fast data collection, real time data analysis, simple reporting on-board the instrument and on your desktop PC
Excel format data provides easy compatibility with other applications
All inclusive lifetime pricing means no annual software support fees, No hidden costs
Ruggedized tablet computer on-board connected to a data acquisition unit

Applications

Inspection of column skirts
Flow accelerated corrosion (power plants)
Corrosion under fire proofing e.g. storage sphere legs
Splash zone of offshore structures and risers
Subsea Pipelines, well casings, repair wraps
Ship Hulls
High Temperature wall thickness monitoring

Aflat PEC probe that can be inserted underneath the annular ring of a tank floor for in-service inspection. The Maxwell PECT is powerful enough to measure through thick layers of corrosion products (iron oxides) underneath the tank floor, which is essential for annular ring inspection. The removal of corrosion materials is clearly unacceptable for in-service inspection, as this may trigger a leakage, but with the Maxwell PECT system this removal process is not required.

Advantages

Compact magnetic field increasing defect sensitivity
High range in WT, 2.0” (5.0cms), and insulation thickness so also suited for vessels, not just piping
Fast single pulse including at high insulation thickness
Scanning possible also at high lift-off
Powerful batteries, with hot-swap capabilities
Robust, designed for use outdoors, very easy to use in field

Includes
One PECT instrument: data acquisition unit permanently connected to a U11i Durabook tablet for data acquisition
Tablet includes
High Capacity Battery
Bluetooth Mouse
AC Adapter
Four standard probes, with protector shoes & wear piece
Two signal cables, each 8m (26.25ft) long, for any probe
Two vibration-suppression shims
Two main batteries for PECT instrument
One external charger for the main battery 110v-230V
Reference plate for functional check by operator, annual remote calibration by Maxwell NDT

Accessories
One-axis position encoder that can be attached to each of the four standard PECT probes (S, M, L and XL)
Flat probe for in-service inspection of annular ring atmospheric storage tanks
Splash zone probe, 30m (98.5ft) water depth
Underwater probe, 1500m (4921ft) depth rating
Option for multi-probe robotic deployment
29m (95ft) long signal cable in transport case; different lengths are available on request
100m long underwater umbilical in transport case; different lengths are available on request
Telescopic pole; 1.8m (5.9ft) collapsed – 6m (19.7ft) extended