Monitoring difficult to access areas

A key advantage of the WAND system is the simple and fast measurement acquisition process. Thickness measurement locations (TMLs) that were previously a challenge to monitor frequently, because of access limitations, are now readily accessible thanks to the WAND system.

Overview

One of the many challenges that inspectors face is monitoring at TMLs that are difficult to access. This includes TMLs that are underneath insulation, coatings and composite repairs. In these cases, the overlying material has to be removed to take a thickness measurement using conventional monitoring methods, which can be costly, inefficient and risk personnel safety.

The WAND system has been designed to help address these challenges. The sensors are low profile, meaning they can be embedded easily underneath insulation, coatings and composite repairs. Measurements can then be wirelessly acquired using the WAND data collection tool, through the overlying material, meaning it does not have to be removed. The addition of the WAND system accessories helps further expand the range of TMLs that can be accessed.

Monitoring underneath insulation

Inductosense has developed an extension coil accessory for the WAND system, called the ECHO. The head of the ECHO coil can be installed on top of existing sensors, and then the coil itself can be threaded through insulation, allowing measurements to be taken by the WAND at the tail. This means the insulation no longer has to be removed to take a thickness measurement.

Monitoring through coatings

Inductosense has worked with a number of coatings companies to validate the use of thermal insulation coatings with our TMS sensors. The testing has confirmed that thermal coatings can be applied over the sensors and thickness measurements can still be wirelessly acquired using the WAND.

This combined solution offers all of the benefits of thermally insulating coatings, whilst still allowing ultrasonic thickness measurements to be taken without the need to remove them.

Monitoring underneath composite repairs

Applying composite repairs to a damaged area of a vessel or pipe means that the area underneath becomes inaccessible for subsequent inspection. The area underneath may be degrading, however there would be no way to assess the condition, without removing the repair.

Inductosense TMS sensors can be installed over damaged areas of the surface of pipework and vessels. Composite wraps can be applied on top of an installed sensor to then protect the damaged area; however, thickness measurements can still be acquired wirelessly using the WAND handheld data collector. This dual functionality solution enables monitoring of the surface underneath the composite repair, without needing to remove it.

Read our whitepaper on monitoring internal corrosion of pipework beneath composite wraps:

Monitoring at height

Inductosense has developed an extendable pole accessory for the WAND system, called the REACH. The REACH connects easily to the WAND data collector, extending the range of access by up to 4m. This allows thickness measurements to be acquired at height using the WAND, potentially eliminating the need for any scaffolding or ropes.