Eddy Current Inspection (ECI)

ECI is a technique utilised on conductive materials (ie ferromagnetic steels, stainless steels, nimonic 80a, etc). An alternating current is applied to an inspection coil, which creates a magnetic field, when placed next to a conductor it induces an ‘eddy current’ field in the material. When this induced field is disrupted by a flaw it causes an imbalance which is magnified and shown on an oscilloscope. This can be done through non-conductive or conductive coatings to test the weld/material underneath the coating.

0845 680 1285

Eddy Current Inspection (ECI) can be used for crack detection, material sorting and coating measurements. Typical site applications include inspection of crane and derrick structures, padeyes and bridge support members.

The equipment is easily portable and highly sensitive allowing it to be used on both galvanised components and complex shapes.

James eddy current inspectionEddy Current Inspectioneddy current inspection eciOffshore Non Destructive Testing








Axiom personnel were at the forefront during the early development of ultrasonic testing and eddy current testing and this innovative approach continues today with the adaptation of existing technology to meet new challenges.

Flare Stack Inspection

For the flare stack inspection project above, Axiom developed an Eddy Current Inspection procedure that enabled testing to be carried out through Thermal Sprayed Aluminium (TSA) – the first time that this has been done.

Fully approved by Total E&P (UK) Ltd, this technique enabled the inspection to be completed in a relatively short period of time (critical at the onset of winter) and more importantly avoided damage to the existing coating.

The same technique has now been successfully used for inspection of risers and a similar approach has enabled us to test through galvanised coatings – ideal for rapid inspection of critical load path items (pad-eyes etc) on offshore drilling derricks.

Other typical site applications include inspection of crane jibs / pedestals / A-frames, deck node joints, padeyes pre / post load testing, drilling derrick substructures, bridge support members (primary and transverse beams) / bearings etc..

0845 680 1285

ECI sets are not intrinsically safe (i.e. control measures and a ‘hot work spark potential permit’ may be required in explosive atmospheres), but the technique itself is non-hazardous to the operator, passers-by or machinery.


enquest logo“The positive highlight must be the early detection of potential failure mechanism connected with the torque tube section #5 and the damage to the taper and keyway pins. This gives us great clarity of where we need to look in future inspections and what we are most likely to need to replace and therefore carry as stock.

All in all, I would say that this inspection has been of the highest quality; in particular the presentation of the findings is best in class, amongst the best that I have seen.”

Neil Mitchell, Enquest (commenting on the 2011 inspection of Thistle Alpha Drilling Derrick and detection of defects using eddy current)



Industry News

[Opinion] Over $9.1bn Will be Spent on Mozambique’s Upstream Capex by 2020, Says GlobalData

An average capex of $3.0bn per year would be spent on eight oil and gas fields in Mozambique betwee ...

[Opinion] Electricity Demand by U.S. Manufacturing has Declined in Recent Years

Source: U.S. Energy Information Administration, based on U.S. Bureau of the Census Annual Surv ...

[Press] Global Oil Free Compressor Market 2018 - Atlas Copco, Ingersoll Rand, Hitachi, Fusheng, Kobelco, Boge

The exclusive report on the Global Oil Free Compressor market is the professional and in-depth docum ...

[Opinion] $21.1bn in M&A Deals Were Announced in the Downstream Sector in 2017, Says GlobalData

A combined value of $21.1bn in mergers and acquisitions (M&A) were announced in the downstream sect ...

[Press] ADES Signs $450m Credit Facility

ADES is pleased to announce that it signed a US$450 million syndicated credit facility to provide t ...

Read more news