Your Safe, Reliable Partner for Hydro Plant Maintenance and Construction
Day & Zimmermann (D&Z) provides safe, efficient, and responsive maintenance and repair at hydroelectric facilities across the country. As the U.S. moves towards a greener energy future, more of that energy will come from hydrological sources. D&Z is here to support your hydroelectric dam and facilities with maintenance, repair, and construction.
Hydro Services Offered
Inspections
Repairs
Replacements
Start-up
Testing
Safety in Hydro Power Generation
At D&Z, we view safety as more than just a priority — it is a fundamental value that underpins all our work. While priorities can shift and change depending on the circumstances, our values are unwavering.
From the highest levels of executive leadership to our teams in the field, we recognize the vital importance of maintaining a safe workplace. We continually share safety trends and implement proactive measures across our teams to mitigate potential hazards, all while prioritizing the wellbeing of our craft.
Our impressive track record of safety performance speaks to the value that we place on safety. By upholding strict safety protocols and delivering consistently high standards, we have earned a reputation for excellence that translates into reduced insurance costs for our clients through the Owner Controlled Insurance Program (OCIP).
Our dedication to safety goes beyond mere compliance with industry standards; we are committed to staying ahead of the curve and consistently improving our practices. We provide ongoing safety training to our employees and work collaboratively with our clients to create a culture of safety across all our projects.
The Craft Your Hydroelectric Plant Needs — When You Need It
Whether union or open shop, D&Z has the network and experience to make sure that your projects are staffed to complete the work on-time and on-budget. It is essential to have a partner with the necessary network and expertise to ensure that the right number of craftspeople — whether the project requires union or open shop labor — are available when and where you need them.
D&Z is that partner, with a vast network of experienced craftspeople across various trades. We understand the importance of having the right number of skilled craftspeople with relevant experience to complete projects successfully.
Our footprint spans most of the U.S., making it easier for us to get critical craft needs to your site and support your projects. This enables us to optimize potential craft resources from other D&Z sites to meet critical requirements. Even if the local labor market is tight, we are your best bet to ensure that your project has the necessary resources to stay on track.
An Experienced and Responsive Hydroelectric Maintenance Partner
D&Z has more than 40 years of experience working in power generation, including hydro power.
To achieve the most efficient operations, hydroelectric plants need a partner that is responsive to their demands and understands the unique challenges and requirements of a hydro plant. A responsive partner can help identify potential issues before they become major problems, reducing the risk of costly downtime and lost revenue.
D&Z services include supervision, labor, tooling, and equipment for unit overhaul, technical assistance and design services, materials procurement, and machining and fabrication services.
You know that hydroelectric facilities require specialized expertise to ensure that maintenance is carried out correctly and safely. Hydroelectric plants are complex facilities with unique maintenance requirements, and it is crucial to have a partner with extensive experience and expertise in this area.
D&Z inspects, repairs, and replaces control and isolation gates and hydraulic systems, turbine runner maintenance, generator repairs, and managed diver cleaning services.
By partnering with a responsive and experienced maintenance provider, hydroelectric plants can achieve optimal efficiency, reduce costs, and ensure the continued delivery of clean, renewable energy for years to come.
How Does D&Z Increase Your Hydroelectric Plants Efficiency
Maintenance is a critical aspect of keeping hydroelectric plants and their dams running smoothly and efficiently. As a source of clean, renewable energy, hydroelectric power is an essential component of our nation's energy mix, and it is crucial to ensure that hydro plant facilities are well-maintained to prevent disruptions in power generation and minimize downtime.
Detailed Areas of Hydroelectric Expertise
Tainter Gate Maintenance
Penstock Piping Mods/Repairs
Turbine Repair and full overhauls
Stoplogs Maintenance
Waterwheels and Generators Replacement
Balance-of-Plant Maintenance
Cavitation Repairs
Generator Air Cooler Replacement/Repairs
Thrust Cooler & Piping Replacement/Repairs
Intake Gate Refurbishment
Civil Work
Concrete Work (Slabs, Water Well Pads, Instrumentation Pads, Ash Stack Maintenance Work)
Hydro Life Extension (HLE) Projects
Hazmat Trained for Clean-up & Disposal
“We continue to make large investments in solar and renewables not just because it is the right thing to do, but because our customers in power generation and government are committed to a more sustainable future. It is part of how we support our partners and earn their business every day.”
– JASON DUNAWAY, PRESIDENT, DAY & ZIMMERMANN UNION OPERATION
Industries We Serve
Power
Process & Industrial
Pulp & Paper
Liquefied Natural Gas
Pharmaceuticals
Manufacturing
Aerospace
