Detecting corrosion under insulation using dogs 

In a two year project (2010 – 2012) funded by Gassco and supported by Statoil, this problem was addressed using Remote Scent Tracing technology: a system where volatiles associated with corrosion are sampled and the sensitive nose of a trained dog is used to detect these volatiles on the samples.

CUI -Joint Industry Research Project (2015 – 2017)


Industy partners; Gassco AS, Statoil ASA and ConocoPhillips

Contractors; Beerenberg, Oceannering

Project funding; Innovation Norway, Statoil, Gassco and ConocoPhillips



  • Air samples have been taken from 150 sampling points at Ekofisk J and 250 sampling points at Sture.
  • Final analysis of test results is on-going.
  • FDTA/OAI have been awarded back to back orders for commercial use of Dogs as CUI Inspection Method.


The RST- technology consists of two main parts: the sampling part at the plant, which may be done by the plant owner or by FDTA, and the analysis part using trained dogs at FDTA. 
After training, the dogs were presented with samples collected in the field using specially designed sampling equipment and filter cartridges. Dogs were able to discriminate between field samples collected near corroded pipes and samples collected from non-corroded locations equally well as they discriminated between training samples.

A number of locations were tested double blind: a situation where no one at the time of sampling or analysis by the dogs knew if the location was corroded or not. Locations that the dogs responded to were opened later for a general visual inspection, and corrosion was found under the insulation. No corrosion was found at locations that the dogs had not responded to.

A system approach was chosen where the response of a number of dogs was combined. In this manner, areas that were analyzed could be divided into high, low or no suspicion of corrosion. The result of the project was that the system is now a proven technology and is ready to be integrated into plant maintenance systems.

The research has been presented at international conferences ( HOIS conference, International Working Dog Breeding Association 2013) and has been published in scientific journals (Materials Evaluation and Applied Animal Behaviour Science).

Detection research projects - publications

Detecting corrosion under insulation using dogs

  • Published inThe American Society for Nondestructive Testing: 


  •  Published in Applied Animal Behaviour Science:

  •  Norway`s larges oil and energy website:

  • REST - Remote Explosive Scent Tracing

Mine Detection Dogs – Training, Operation and Odour Detection

REST research project in 2009-2010. Official publication of results from the project: