DEI designs and builds hardware systems for custom applications. Our engineers typically handle all phases of the effort, including developing conceptual designs, preparing design specifications, testing prototypes, and performing or overseeing fabrication. Our design capabilities include state-of-the-art CAD (Solidworks), and are augmented by our expertise in materials, corrosion, electronic devices, controls, and mechanical systems. We follow the manufacturing process from materials procurement through final assembly, testing, and installation.

  • Innovation In Design

    DEI's engineers are encouraged to create innovative design solutions for a variety of problems in the power industry. We recently received the prestigious R&D100 award for the invention of the ultrasonic fuel-cleaning system and hold over 20 patents.

  • Supported by Analysis and Testing

    Because of DEI's broad capabilities, all of our designs are analyzed structurally, thermally, and hydraulically when applicable. In addition, DEI's laboratory facilities allow us to verify and quantify performance before implementing in the field.

Nuclear Fuel Cleaning


Fuel cleaning complemented with four-face visual inspection.

In the late 1990's, DEI developed a patented method for removing highly radioactive deposits from irradiated nuclear fuel. Based on an advanced ultrasonic cleaning technology, the first prototype system was successfully designed and built by DEI in about three months.

In 2010, after 11 years of domestic and international fuel cleaning experience, DEI developed the high-efficiency ultrasonic fuel cleaning system (HE-UFC). HE-UFC has since been implemented world-wide at nuclear generating stations, and boasts a high throughput, an enhanced cleaning efficiency, and a high capacity filtration system.

Ultrasonic Heat Exchanger Cleaning

Tube-Bundle Cleaning

Ultrasonic cleaning deployed through narrow equipment opening.

Leveraging our experience with nuclear fuel cleaning, DEI also designs equipment to ultrasonically clean heat exchangers, pipes, and vessels. Corrosion deposits can lead to reduced thermal performance, decreased power output, inhibited nuclear reactions, increased radiation levels, and/or corrosion of key components. Advanced ultrasonic cleaning methods comprise an important new technology in the nuclear power industry by offering a cost-effective means for mechanically removing these deposits.

Nuclear Fuel Sipping

Fuel cladding failures can create radiation dose rate increases in nuclear plants and present a significant economic burden. DEI designed a novel system for fuel leak detection, combining our expertise in chemical analysis, radiological detection, thermal hydraulic analysis, and mechanical design. The sipping system we designed and have implemented is considered the most effective fuel leak detector in the industry.