Maintenance and Modification Experts

Day & Zimmermann’s core competence is in the maintenance and modification of existing industrial plants. Improving maintenance efficiency and effectiveness is critical to minimizing downtime and reaching higher levels of profitability. Day & Zimmermann understands the economic impact of downtime or compromised plant performance – that is why companies in the power, process, and industrial sector rely on us to maximize asset performance and output.

Our Total Accountability Model provides a single point of contact driving accountability across safety, human performance, cost, schedule, quality, and resource supply.

Day & Zimmermann has flexible service delivery models that respond to the needs of our clients, including supplemental contingent workforce, managed task, and stand-alone projects.

The Nation’s Leader in Power Plant Maintenance

Day & Zimmermann is the leading power contractor specializing in maintenance and modification solutions for the nuclear and fossil power markets. For the sixth consecutive year, we are ranked as the #1 O&M contractor in the U.S. Power market by Engineering News-Record. Working as an alliance partner, D&Z lowers the total cost of ownership for generation assets by consolidating services and providing a single point of contact driving accountability across safety, human performance, cost, schedule, quality, and resource supply.

 

Nuclear and Fossil Energy Services

  • Industry-leading safety & human performance
  • Maintenance & modifications
  • Pre-outage readiness planning & review
  • Managed task work execution
  • Turnkey capital projects
  • Boiler maintenance & repairs
  • Balance-of-plant services
  • Fleetwide best practices

Specialty Services

Day & Zimmermann offers unique capabilities that supplement our maintenance services and seamlessly integrate into the total plant lifecycle solutions we deliver to our customers.