Laveer Engineering is in constant development of new and cutting edge products focused heavily on inspection and maintenance solutions. These products are often developed directly for our customers to service very specific requirements or are undertaken by Laveer’s product development team to target a problem currently faced in industry.
CALANDRIA RELIEF DUCT – VISUAL INSPECTION TOOLSET
An inspection cart capable of navigating through the Calandria Relief Duct and delivering a video probe through the balance line elbolet up to the balance line Tee was designed, manufactured, assembled and tested. The system included a custom control system and winch assembly to ensure the cart could be deployed and retracted with ease. Once at the balance line elbolet, the cart pushes a visual inspection and measurement probe into the balance line. The cart is capable of both rotating and advancing the video probe axially to identify and characterize flaws.
A full-scale proof of concept (POC) system was developed as part of the design process using a combination of 3D printed and machined components. With this prototype, Laveer was able to retire design risks early in the project without incurring the large costs and schedule slip associated with a completely machined prototype. This allowed Laveer to confidently deliver a toolset with all required functionality.
Some key features of the toolset are as follows:
- Axial and rotational position control of video probe from the elbolet
- Separate CRD inspection cart with modular camera mount for off-the-shelf cameras
- Switchable video output – up to four simultaneous camera feeds
SEPARATOR REPAIR TOOLSET – CLEANING AND WELDING SYSTEM
A separator repair system was developed to repair degraded steam separators found in the secondary side of Steam Generators. To facilitate the repair, an automated clean tool was used to remove extremely hard black and red oxidation from the base plate in preparation for welding. A patch plate was subsequently delivered and welded to the base plate using an automated GTAW autogenous stitch weld process.
Each tool utilized a common orbital drive system which employed a unique mechanism to ensure its axis remained perfectly perpendicular to the base plate during tool operation. On-board cameras were integrated into the clean tools, weld tools and inspection tools to monitor the work as it was performed – this was used to verify both the level of cleanliness of the base plate and the quality of the weld performed. The clean tool was capable of operation from 100-20000RPM with a power output of over 1.5kW. Paired with an adjustable suspension, the tool could be used to perform anything from a mirror surface polish to heavy surface grind depending on the level of oxidation. An onboard vacuum attachment was used along with FME guarding to ensure collection of all debris was maintained.
During it’s first deployment over 100 separators were repaired, well ahead of schedule.
SINGLE FUEL CHANNEL REPLACEMENT – TOOL DELIVERY PLATFORM
A new delivery platform to support Single Fuel Channel Replacement (SFCR) in CANDU reactors was designed, built, tested and delivered. The platform replaces multiple, legacy deployment tools and was designed to be compatible with all operating units and channels. It provides positive positioning and alignment with the reactor face as well as a mechanical advantage to the operator. This allowed a single operator to safely deliver an end fitting assembly without the risk of losing control of the 400 lb load.
In February 2016, Laveer Engineering supported the on-site first time deployment of two of the platforms during the Bruce Unit 8 outage. Their use immediately resulted in a reduced crew size and decreased the quantity of deployment tools. This not only reduced personnel dose but also reduced outage critical path time. It is expected that future SFCR campaigns will benefit from the use of this innovative platform as a key method to reduce risk and minimize outage time during this important activity.
EDDYFI – AUTOMATED PROBE DRIVE
Laveer has designed one of the most complete and high performing automated probe drives on the market. Developed for Eddyfi, the probe drive employs a custom control system responsible for full motion control of both the belt drive and take-up reel including multi encoder feedback, actuator control and TCP/IP communications with the NDE instrument and PC. The tool is operable by a single person and is lightweight, versatile and developed using principles of universal design.
For more information about the Eddyfi Probot™, visit https://www.eddyfi.com/products/probot-high-performance-probe-pusher-system/