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 Industries We Serve


With an average of more than 100 outages and 900,000 project hours annually, NBS has the experience and expertise to install, commission, or service your industrial boiler system. NBS employs a dedicated preplanning process to identify optimal construction procedures and modularization opportunities.

The most experienced team in the industry

Increase the lifespan and efficiency of your boiler and recovery system.

Maintaining operating efficiency

We aim to reduce emissions, improve feed water quality, and prevent contamination.

Meeting your toughest outage deadlines

Expert service and rapid response without compromising safety and quality.

Strict sanitary and quality control standards

NBS helps you deliver the cleanest, highest quality steam.

Pulp & Paper


Extending the life of your boilers and recovery systems

Pulp & Paper Mill process boilers and recovery systems are designed to utilize waste by-products to fuel their power needs. These systems often rely on biomass fuel sources, such as black liquor, organic waste material, or coal. These materials can release large amounts of corrosive and erosive exhaust gases that could prematurely shorten equipment life.

Types of Pulp & Paper Boilers

With more than 25 years of experience in the pulp & paper industry, National Boiler Service has the expertise to maximize the lifespan of your boiler system. We specialize in modernizing pulp and paper boiler systems to meet changing government regulations, such as the Boiler MACT rule.


Biomass Boilers

Whether you're retrofitting a fossil-based boiler or servicing an existing biomass unit, NBS can help you get the most out of your biomass boiler.


Recovery Boilers

Many pulp & paper recovery boilers are nearing the end of their 30-year lifecycle and will require plant shutdown if not properly serviced or maintained. NBS can help you upgrade to a new high-efficiency recovery boiler.

Contact us or call (877) 360-0858 if you have questions about installing, upgrading, or replacing your pulp & paper boiler system.



Rapid response for the power generation industry

With an average of more than 100 outages and 900,000 project hours logged each year, NBS has the experience to meet the power generation industry’s quick response needs. Our emergency response fleet is deployable within 12 hours of your initial call and can be on-site before your utility boiler system has had time to cool or lockout.

Types of Utility Boilers

We are well versed in both foreign and domestic multi-fuel and utility boiler systems. Our team can install equipment to help you optimize the use of various fuel sources, including fossil fuels, gas, and blended fuels. Piping systems, structural, and miscellaneous mechanical projects add value to our power boiler services.

Coal Boilers

Our experience in the energy industry allows us to install and service coal-fired boilers with minimum downtime. NBS is aware and prepared to perform safely in situations where arsenic may be present.

Gas Boilers

In addition to installing and repairing gas-fired utility boilers, NBS can upgrade existing power and utility boilers to meet current standards for Major Source Boiler MACT, Area Source Boiler Rule, and the CISWI Rule.

Contact us or call (877) 360-0858 if you have questions about installing, upgrading, or replacing your Power Boiler & Utility Boiler system.

Power Generation


Ensuring overall system reliability for the Chemical & Refinery Industry

NBS understands the extreme conditions of Chemical & Refinery boiler systems and how they can impact plant operations.

Types of Chemical & Refinery Boilers

Chemical & Refinery boiler types are subjected to constantly changing conditions and are at high risk for boiler corrosion, tube scale, fouling, and/or failure of critical equipment such as economizers and turbines. Our chemical cleaning process can remove residual deposits of rust and mill-scale that can hinder flow and circulation.


All Refinery & Chemical boiler servicing projects include an extensive constructability and preplanning phase to identify opportunities for cost and labor reductions. Our extensive planning has been proven to improve overall efficiency and ensure long-term, reliable boiler performance.

Gas-fired Boilers

NBS specializes in servicing gas-fired boilers for the Chemical & Refinery industry, including power and process piping, burner replacements, and environmental/air systems to ensure efficient delivery of process steam.

Alternative Fuel Boilers

NBS can convert your existing boiler system to handle alternative fuels as well as optimize your existing alternative fuel system.

Contact us or call (877) 360-0858 if you have questions about installing, upgrading, or replacing your Chemical & Refinery boiler system.

Chemical & Refinery


Meeting the stringent sterility demands

It is imperative that each boiler system component acts in unison to maintain hygiene integrity, reduce air pollutants, and maximize steam cycle performance.


National Boiler Service has the experience and knowledgeable staff to install your Pharmaceutical equipment and clean steam boiler systems.

Types of Pharmaceutical Boilers

Pharmaceutical boiler types can vary depending on fuel source, unit location, emissions, boiler controls, and heating requirements.

Water Tube Boilers

NBS can help you maximize the efficiency of your water tube boiler by repairing or upgrading super heaters, water well panels, power and process piping, drums, and more.

Coded Pressure Vessels

Pharmaceutical pressure code vessels, multi-purpose vessels, and mixers require the highest quality metals for storing sterile liquids and raw ingredients. NBS is code certified to weld a wide variety of materials, including carbon, chrome, stainless & other exotic metals - even P91 materials.

Our comprehensive pressure vessel inspection process ensures that all repairs, such as external patch plates, are in compliance with ASME and National Board of Boiler and Pressure Vessel Inspectors. Pressure vessel field repair services include pressure testing, on-site stress relieving, weld heat treating, and pneumatic testing. We can also modify or upgrade existing pressure vessels to meet your custom size and capacity requirements.

Contact us or call (877) 360-0858 if you have questions about installing, upgrading, or replacing your Pharmaceutical boiler system.

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