ESI Projects

Duane-Arnold Energy Center

Palo, Iowa 

Completed:

In the 1980s, the principals of ESI were responsible for the Detailed Control Room Design Review implementation at Iowa Electric’s Duane Arnold Energy Center (DAEC) and subsequently formed this turn-key engineering and modifications company to specialize in operational and engineering problem identification and resolution with an emphasis on cost-effective, human-engineered modernization of I & C systems. ESI has performed numerous design modifications at DAEC including:

  • Extensive re-design of nuclear plant control rooms at DAEC to implement the human factor modifications.

  • Design and installation of a Containment Isolation Monitoring System at DAEC which monitors initiation relays and all valves in each isolation group and provides direct panel indication of isolation success.

  • Development and installation of the patented ESI Motor Operated Valve Thermal Overload Monitors. This Thermal Overload Monitor will “flash” the energized MOV position indicating lights when a valve trips on overload. The monitor fits in the existing breaker buckets, interconnects in the existing control circuit and provides this alarm indication without any additional cabling or alarm services.

  • Design and installation of “hardwired, key-locked” Emergency Operating Instruction (EOI) override circuits at DAEC to improve operator’s response time as a result of our extended task analyses during EOI development.

  • Retrofit panel repairs using the patented Retro-FITZ™ weld-less control panel repair method to save significant man-hours and costs.

  • Recent DAEC design experience includes the Isolated Phase Bus and cooling system upgrades, Feedwater flow instrumentation upgrades, and Field Engineering support for the DAEC Main Transformer replacement.

  • ESI is currently still providing design and field engineering services to the Project Engineering group at DAEC.