Harris Thermal is actively renewing and strengthening its NQA-1 nuclear quality assurance program. We have a documented history of supporting nuclear and DOE-related fabrication work under rigorous quality requirements, and we are investing to ensure our program meets current nuclear supply chain expectations. For specific qualification requirements on your project, we encourage direct engagement with our quality team.

Harris Thermal is positioned to support balance-of-plant nuclear heat exchanger fabrication, ASME pressure vessels, custom thermal systems, and packaged equipment for nuclear EPCs, utilities, DOE contractors, SMR developers, and Tier 1 nuclear suppliers. Our scope centers on nuclear and nuclear-adjacent work — residual heat removal systems, component cooling water heat exchangers, spent fuel pool cooling equipment, secondary system vessels, and research facility thermal equipment — that does not require an ASME Section III N-Stamp.

Yes. Harris Thermal is an ASME-certified fabricator with decades of experience fabricating pressure vessels to ASME Section VIII. Our in-house engineering team owns the calculations, designs to code, and produces complete documentation packages — material test reports, weld records, NDE documentation, and hydrostatic test records. ASME pressure vessel fabrication is a core capability across our industrial, DOE, and nuclear-adjacent work.

No. Harris Thermal does not currently hold an ASME Section III N-Stamp. We are positioned around balance-of-plant equipment, nuclear-adjacent scope, and quality-assured fabrication that does not require N-Stamp certification. If your project requires N-Stamp fabrication, we will tell you directly and help you identify appropriate options rather than attempt work outside our qualified scope.

Yes. Harris Thermal has supported fabrication work tied to DOE initiatives including the Hanford Waste Treatment and Immobilization Plant and other regulated research and cleanup environments. As a DOE fabrication supplier, we understand the documentation requirements, material control standards, and quality system expectations these projects demand. Our ongoing NQA-1 program renewal further strengthens our ability to support DOE contractors, national laboratory customers, and government-funded nuclear programs.

Harris Thermal fabricates shell-and-tube heat exchangers, ASME pressure vessels, evaporators, condensers, packaged thermal systems, and custom process equipment for nuclear and nuclear-adjacent applications. Representative equipment types include residual heat removal heat exchangers, component cooling water systems, spent fuel pool cooling equipment, secondary system accumulators and surge tanks, and custom thermal systems for research facilities and advanced reactor programs.

Yes. Harris Thermal's integrated engineering and fabrication model is well-suited for SMR thermal equipment and advanced reactor fabrication projects. These programs typically require a fabricator who can engage early in design, adapt to evolving specifications, build to tight tolerances, and deliver complete documentation packages. We have supported this type of work, and our ongoing NQA-1 program renewal aligns with the quality expectations of advanced reactor and SMR developers.

Harris Thermal fabricates equipment in carbon steel, stainless steel, duplex stainless (2205, 2507), AL-6XN, Hastelloy C-276, Inconel 625, titanium (Gr. 1, Gr. 2, Gr. 12), and other high-alloy and corrosion-resistant materials. Material certifications, heat and lot traceability, and qualified weld procedures are maintained for all materials — including those required under a nuclear quality assurance program.

Harris Thermal operates a 50,000 ft² fabrication and machining facility with 200,000 lb overhead crane capacity and bay doors 30 ft tall × 60 ft wide. We routinely fabricate large-diameter pressure vessels, heavy shell-and-tube heat exchangers, and multi-component skid assemblies requiring heavy lift and precision fit-up. The majority of fabrication and machining is performed in-house without subcontracting scope to outside shops.

Harris Thermal performs engineering design, plate and shell fabrication, welding, in-house machining, NDE coordination, hydrostatic testing, and quality documentation without subcontracting to outside shops. Our dedicated machining bay handles tube sheet drilling, flange facing, nozzle preparation, and precision fit-up. Keeping these capabilities under one roof compresses schedule, maintains dimensional accountability, and simplifies chain-of-custody documentation — all critical for regulated and documentation-intensive fabrication programs.

Early engagement produces better outcomes. When Harris Thermal's engineering team is involved during design development, we can identify fabrication constraints, material options, and documentation requirements before they create schedule or cost problems. For nuclear, DOE, and advanced reactor projects where design changes are common and quality requirements are stringent, early supplier involvement reduces risk for the entire project team.

Yes. Harris Thermal regularly fabricates replacement shell-and-tube heat exchangers and replacement tube bundles for utilities and operating plants. We can work from existing drawings, field measurements, or reverse-engineered specifications. For outage-critical replacement equipment, our integrated engineering and fabrication team compresses turnaround timelines while maintaining code compliance and complete documentation aligned with project-specific quality requirements.