NuSource LLC
  • ABOUT
    • HISTORY & HIGHLIGHTS
    • CAREERS
  • CAPABILITIES
    • ENGINEERING
    • FABRICATION
    • FACILITIES
  • TEAMING AGREEMENTS
    • CARRIER
    • FLEXASEAL
    • NUCCORP
    • PALL
    • SWAGELOK
    • WATLOW
    • XYLEM / AM STANDARD
  • QA PROGRAM
  • NEWS

Supplying the nuclear industry with
specialty equipment, fabrication,
and ​design engineering.

Capabilities
Teaming Partners
Quality Assurance
Our History

​NuSource supplies safety-related hardware solutions to the nuclear power industry. We specialize in difficult-to-solve replacement solutions that are critical to plant operation and regulatory compliance.  For every project, NuSource delivers the engineering expertise, the nuclear industry knowledge, and the manufacturing skills needed to supply the solution that best meets all of the customer, plant, code, project, and documentation requirements. 
  READ MORE ABOUT US

CAPABILITIES

Fabrication

Our fabrication capabilities include ASME code, instrumentation & control, and close tolerance CNC machining. All facilities operate to the applicable nuclear safety-related quality requirements, including ASME Section III, NQA-1 and 1 0 CFR 50 Appendix B.  
ASME Boiler and Pressure Vessel Code Section III Hardware
  • Pressure Vessels and Storage Tanks
  • Piping Systems and Piping Sub-assemblies
  • Replacement Vessel Supports 
  • Custom Piping System Supports 
  • Core Support Structures
  • Heat Exchangers 
  • Tube Bundle Assemblies
  • Welded Channel Heads 
  • Welded Covers 
  • Appurtenances
  • Seam Welded Pipes
Safety-Related Instrumentation & Controls and Electronics
  • ​​Circuit Cards
  • Control Panels
  • Relays/Breakers
  • Cable Assemblies
  • Cabinets​
​​Safety-Related CNC Machining
  • Specialty Fasteners
  • Pump & Valve Spare Parts
  • Orifice Plates
  • Flow Restricting Devices
ASME Boiler and Pressure Vessel Code Section III Hardware
NuSource is an excellent partner for projects that include outage hardware, custom replacements, and specialty repairs. 
​​Safety-Related CNC Machining

Engineering

NuSource engineering staff has decades of experience working in the nuclear industry, including leading major industry and regulatory initiatives that impact the supply of safety-related replacement hardware.  ​Our company integrates engineers from member-company MPR Associates to provide expert staff for all engineering deliverables.
Features
  • ASME Code Design Reports
  • Certified Design Specifications
  • Commercial Grade Dedication 
  • Specialty Engineering and Prototype Development
  • On Site Support Services
NuSource engineers are involved with each phase of every NuSource project.  Our engineering-first approach begins well before a project is awarded, often when the value of NuSource can be leveraged most. Our engineers work with the customer to ensure that all code, design, licensing, and project requirements can be satisfied and can be realized. This interaction between our engineering and manufacturing organizations reduces project risks and mitigates negative impacts to design, fabrication, budget, and project schedule.

Facilities

NuSource is headquartered in the Old Town district of Alexandria, Virginia.  Alexandria is home to NuSource’s management team, project management group, and engineering staff.  Manufacturing work is performed at facilities in Santa Maria, CA (I&C), and Altamont, NY (ASME Code fabrication).  
Corporate Office
Alexandria, VA
  • NuSource Management Team
  • Project Managers/Coordinators
  • Accounting and Legal
  • Lead Auditors/Inspectors
Engineering
MPR Associates | Alexandria, VA
  • 150 Professional Engineers
  • ASME Code Experts
  • I&C Experts
  • Test & Analysis Efforts
ASME Fabrication
​ Met Weld International | Altamont, NY
  • ASME Section III, Section VIII, NQA-1 & 10CFR50 Appendix B
  • 55,000 ft of dedicated manufacturing space
  • Over 55 expert welders and fabricators
  • 40-ton overhead crane capacity
  • ASME Section IX Qualified Welders and Procedures
  • AWS Qualified Welders and Procedures
  • Gas Metal Arc Welding (GMAW) | MIG Welding
  • Gas Tungsten Arc Welding (GTAW) | TIG Welding
  • Shielded Metal Arc Welding (SMAW) | Stick Welding
  • Flux-Cored Arc Welding (FCAW)
  • Submerged Arc Welding (SAW)
  • Ferrous and Nonferrous Metals
  • Blasting and Painting
  • Hydrostatic Pressure Testing (0 - 4,000 psi)
  • Pneumatic Pressure Testing
  • Standing Water Testing
  • Functional Flow Testing
Electronics and I&C
Gavial Engineering | Santa Maria, CA 
  • NQA-1 & 1 0 CFR 50 Appendix B
  • 22,000 ft of dedicated electronics manufacturing space
  • Analog & Digital
  • PCB (thru-hole and surface mount)
  • Hand & Wave Soldering
  • SMT Pick-and-Place & Reflow
  • IPC-A-610 Soldering Inspection
  • Copper Cable Assemblies
  • Cables: Co-axial, Twin-axial, Ethernet
  • Fiber-optic Cable Assemblies
  • ESD-Protected Work Areas
  • Testing & Burn-In
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NuSource maintains full control of all engineering and manufacturing efforts. We utilize our member companies, MPR Associates and Gavial Holdings, as well as and other strategic partnerships for manufacturing-critical services.  ​​​Work is performed at manufacturing facilities in Santa Maria, CA (I&C) and Altamont, NY (ASME code fabrication). 
  DOWNLOAD OUR CAPABILITY SPEC SHEET

PROJECT HIGHLIGHTS

NuSource fabrication treats each project with the attention and care of any first-of-a-kind project.  This culture makes NuSource an excellent partner for projects that include outage hardware, custom replacements, and specialty repairs. 

Design, Manufacture and Testing of ASME Section III Cavitating Venturis.
NuSource Fabricates Nine New Emergency Feedwater Air Accumulator​s
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The cavitating venturis are being added to the Emergency Feedwater System (EF) as a safety feature to prevent pump run out and ensure flow to the steam generators. The project was completed in accordance with the NuSource Quality Assurance Manual via its N stamp and Appendix B nuclear program. 
​
READ THE FULL STORY ON LINKEDIN
The safety related (Appendix B) pressure vessels range in sizes from 51" diameter x 15 ft. long to 10ft. diameter x 16ft. long and were designed and fabricated on an expedited schedule.
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READ THE FULL STORY ON LINKEDIN
  QUALITY ASSURANCE

OEM TEAMING PARTNERS
“Like-for-Like” replacement parts based on original design information and quality standards.

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Learn More.

NuSource combines the resources of MPR Associates and Gavial Holdings to bring you more than 50 years of engineering experience and 35 years of manufacturing in providing safety-related Appendix B parts and services.
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Join The Team

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​NuSource LLC
320 King Street
​Alexandria, VA 22314
Corporate:  (571) 482-7404
[email protected]

© 2025 NuSource, LLC. All Rights Reserved
  • ABOUT
    • HISTORY & HIGHLIGHTS
    • CAREERS
  • CAPABILITIES
    • ENGINEERING
    • FABRICATION
    • FACILITIES
  • TEAMING AGREEMENTS
    • CARRIER
    • FLEXASEAL
    • NUCCORP
    • PALL
    • SWAGELOK
    • WATLOW
    • XYLEM / AM STANDARD
  • QA PROGRAM
  • NEWS