Wellhead Manufacturer Tracks Products Via RTLS

By Claire Swedberg

A Wi-Fi-based AeroScout RFID solution, installed by Boston Networks, allows FMC Technologies to track the location and, thus, the status of each piece of equipment as it is assembled or serviced.

Equipment built for use in oil wells is not only expensive, but often includes many potentially hazardous materials. As such, it must be closely monitored, both on a manufacturer's site and as it leaves the plant, bound for an end user. FMC Technologies, a Scotland-based manufacturer of equipment for the energy industry, is employing an AeroScout real-time location system (RTLS) installed by Boston Networks, a U.K.-based Wi-Fi network provider. FMC Technologies is using the system to identify where each piece of equipment is located as it is being assembled, as well as when that item is shipped to an end user, and when it is later returned for refurbishing. That information provides an automated record for regulators, while also helping the company ensure that its operations run efficiently.

The installation occurred at FMC Technologies' 213,000-square-foot Dunfermline Subsea facility, including its entire building and warehousing areas, according to Mark Gallant, AeroScout's VP of industrial marketing.


AeroScout's Mark Gallant

FMC Technologies builds petrochemical wellhead devices used to cap oil pipes for undersea oil wells. The devices are large—in some cases, the size of a small car. The Dunfermline facility assembles the equipment and then ships the items to energy companies. Throughout that process, the firm tracks each piece's location and status—not just to ensure that every item is easy to locate within the large warehouse and assembly space, but also to help the company comply with safety-based regulatory and statutory requirements regarding where objects are moved or stored, and for how long. Once the oil-drilling project is complete, the equipment is returned to the Dunfermline site, where it is refurbished prior to being shipped out for reuse.

Until the RTLS technology's installation in mid-2011, FMC Technologies tracked the location of equipment manually. Now, the company automatically tracks the department in which each asset is located, via a combination of its existing Wi-Fi nodes and AeroScout exciters, in order to pinpoint when a tagged item moves through a chokepoint from one department to another—such as in the paint shop or finished goods section.

While a product is being assembled, an AeroScout T2 tag is permanently attached to that item, containing a unique ID number that it transmits to the Wi-Fi nodes. That data is received by AeroScout's MobileView software, residing on FMC Technologies' back-end system, which determines each asset's location based on the nodes receiving that transmission. As the tag passes an exciter, the exciter's own ID is received by the tag, which forwards the locator's ID, along with its own, to the back-end system, thereby indicating that a tag has entered a more specific location—typically, the egress between two departments.

Once an asset is returned by an oil-well operator for servicing, the system automatically reads its tag ID number once more. That number is linked to the item's assembly history, as well as the time at which it was shipped out and the location to which it had been sent. As that piece of equipment proceeds through any restorative servicing, its movements are monitored by the MobileView software, and that information is stored for viewing by FMC Technologies' management.

In the event that an item's tag signal is no longer detected, or if that asset falls out of the expected series of procedures, MobileView can issue an alert to the plant's managers, enabling them to rectify the problem. FMC Technologies can also provide data regarding each piece of equipment to regulatory groups or inspectors, if so requested. Prior to the AeroScout system's installation, Gallant says, FMC Technologies had to access manual reports about equipment assembly and servicing, which tended to be a time-consuming process.

By deploying the RTLS solution, FMC Technologies is able not only to provide inspectors with regulatory compliance reporting, but also to increase the productivity of its assembly and servicing operations, by knowing exactly where every item is located, which processes have been completed for that asset, and when each task was performed. The company is currently evaluating the AeroScout system at some of its other 30 production facilities worldwide, though details about those plans are not yet available. Boston Networks and FMC Technologies have declined to be interviewed for this story.