National Boiler Service - Safety, quality, and innovation since 1989. Established in 1989 with a focus on safe, quality production, NBS is the boiler shutdown contractor of choice for power producing plants throughout North America. We average 120 outages and 800,000 project hours annually, devoting more than 300 years of combined experience to servicing and installing industrial boilers and essential equipment. Licensed to operate in 39 states, National Boiler Service has the experience and a professional and capable workforce database of more than 10,000 to complete jobs safely, on time, and with top-notch quality. National Boiler Service - Our Mission At National Boiler Service, our mission is to deliver quality products and services in a respectable and dignified manner in an environment that cultures Safety, Integrity, and Fairness. When safety, quality, and experience matters most: In addition to vital preplanning, we offer expert boiler system and component services, including r