NuSource
NuSource LLC supplies ASME Section III safety-related hardware, instrumentation and controls, and engineering services exclusively to US and Canadian commercial nuclear power plants, leveraging exclusive OEM distribution agreements and in-house nuclear-qualified manufacturing to deliver like-for-like replacement and custom fabrication solutions.
- Company typePrivate
- Founded2012
- HeadquartersAlexandria, United States
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What NuSource does
NuSource LLC is a private US supplier of safety-related hardware and engineering services exclusively to the commercial nuclear power industry. Formed in January 2012 as a joint venture between nuclear engineering firm MPR Associates and electronics manufacturer Gavial Holdings, the company designs, fabricates, and qualifies ASME Boiler and Pressure Vessel Code Section III pressure vessels, piping systems, heat exchangers, core support structures, safety-related instrumentation and controls, and close-tolerance CNC machined components for US and Canadian nuclear plants. Operations are anchored by 55,000 ft² of nuclear-qualified ASME fabrication capacity in Altamont, NY (Met Weld International), 22,000 ft² of nuclear-qualified electronics and I&C manufacturing in Santa Maria, CA (Gavial Engineering), and an engineering and project management headquarters in Alexandria, VA, with staff totaling 400+ employees across four US sites.
The company's product portfolio combines in-house fabricated hardware with exclusive nuclear-aftermarket distribution rights for major OEMs, including Swagelok (worldwide for ASME Code valves), Pall Corporation (US, Canada, Latin America, South Korea for filter vessels), Watlow (US for heaters), Xylem/American Standard (US for heat exchangers), Flexaseal (US for ShellCool systems), NUCCORP (bladderless pulsation dampeners), and Carrier (hermetic centrifugal chiller parts). Engineering services include ASME Code design reports, certified design specifications, commercial grade dedication, reverse engineering, and on-site outage support, delivered via an engineering-first pre-award model intended to reduce project risk before contract award.
NuSource monetizes through quote-based, project-driven hardware sales and professional services revenue tied to customer outage cycles, with pricing not publicly disclosed. Go-to-market is direct enterprise field sales to nuclear utilities, supplemented by channel/reseller arrangements for OEM partner products. The firm holds the ASME 'N' Certificate of Authorization (N-4603) and, as of July 2025, ASME G and GC certificates making it only the second organization in the world authorized under Section III for graphite core components, alongside NQA-1, 10 CFR 50 Appendix B, 10 CFR 21, ANSI N45.2, and NUPIC/NIAC audited status, which collectively form the regulatory backbone of its competitive position.
NuSource firmographics
Firmographics- Name
- NuSource
- Legal name
- NuSource LLC
- Website
- https://nusourcellc.com
- Company type
- Private
- Founded year
- 2012
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- NuSource LLC supplies ASME Section III safety-related hardware, instrumentation and controls, and engineering services exclusively to US and Canadian commercial nuclear power plants, leveraging exclusive OEM distribution agreements and in-house nuclear-qualified manufacturing to deliver like-for-like replacement and custom fabrication solutions.
- Ownership category
- akta.pro rank
NuSource industry classification
Industry- Product category
- Nuclear Safety Hardware Manufacturing
- NAICS
- All Other Miscellaneous General Purpose Machinery Manufacturing (333998), Other Electronic Component Manufacturing (334419), Electronic and Precision Equipment Repair and Maintenance (811210)
- SIC
- Special Industry Machinery, Nec (3559)
- akta.pro primary industry
- Nuclear Power Plant Operations & Maintenance (O&M) (EUACADAO)
- akta.pro secondary industries
- Pressure Vessels, Columns & Storage Tanks (ASME/Process Vessels) (IMAHAEAF), In-Service Inspection (ISI) & NDE (ASME Code, Ultrasonics, Eddy Current) (EUAKABAF)
Keywords
Where NuSource is headquartered
LocationHeadquarters
- HQ city
- Alexandria
- HQ country
- United States
- HQ region
- North America
Offices3 records
Markets served
NuSource business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Personnel, Supply Chain, Operations, Infrastructure, Technology or R&D, Marketing or Sales
Revenue model
- Safety-Related Hardware Sales: Sale of nuclear safety-related replacement hardware including pressure vessels, heat exchangers, valves, filters, and mechanical components to commercial nuclear power plants
- Custom Fabrication Services: Custom fabrication services for nuclear applications including ASME code fabrication, CNC machining, welding, and specialty repairs performed at certified facilities
- Engineering Services: Engineering services including ASME Code Design Reports, Certified Design Specifications, reverse engineering, obsolescence solutions, and on-site support for nuclear plant projects
Go-to-market motion1 record
Distribution channels5 records
Marketing channels4 records
NuSource product offering
Product offeringCore offering
NuSource manufactures and supplies safety-related hardware solutions to the commercial nuclear power industry, including ASME Section III pressure vessels, piping systems, core support structures, safety-related instrumentation and controls, and close-tolerance CNC machined components. The company complements its own fabrication with exclusive OEM partnerships (Swagelok, Pall, Watlow, Xylem/American Standard, NUCCORP, Flexaseal, Carrier) to provide like-for-like replacement parts, supported by engineering services including ASME Code design reports, reverse engineering, and commercial grade dedication.
Product overview
NuSource is a nuclear industry hardware solutions company that provides a comprehensive portfolio of safety-related equipment and engineering services exclusively for commercial nuclear power plants. The core offering consists of ASME Section III pressure vessels, piping systems, instrumentation and controls, and precision CNC machining services. This is complemented by exclusive partnerships with leading manufacturers (Swagelok valves, Pall filters, Xylem/American Standard heat exchangers, Watlow heaters, NUCCORP pulsation dampeners, Flexaseal ShellCool systems, and Carrier chiller parts) to supply like-for-like replacement components. Engineering services including design reports, reverse engineering, and commercial grade dedication support the entire product portfolio. The company operates manufacturing facilities in Altamont, NY (ASME fabrication) and Santa Maria, CA (electronics/I&C), with engineering provided through member company MPR Associates in Alexandria, VA.
Differentiator
Problem solved
Functional benefit
Products and services
- ASME Section III Pressure Vessels and Storage Tanks Safety-related pressure boundary components including pressure vessels, storage tanks, heat exchangers, tube bundle assemblies, and welded channel heads manufactured to ASME Section III requirements for nuclear power plant applications.
- ASME Section III Piping Systems Custom piping systems, piping sub-assemblies, replacement vessel supports, and custom piping system supports designed and fabricated to ASME Section III standards for nuclear applications.
- Core Support Structures Nuclear reactor core support structures designed and manufactured to ASME Section III requirements for safety-related applications.
- Safety-Related Instrumentation and Controls Safety-related circuit cards, control panels, relays/breakers, cable assemblies, and cabinets for nuclear power plant instrumentation and control systems manufactured to NQA-1 and 10 CFR 50 Appendix B.
- Safety-Related CNC Machining Close-tolerance CNC machining services for specialty fasteners, pump and valve spare parts, orifice plates, and flow restricting devices meeting nuclear safety requirements.
- Cavitating Venturis ASME Section III cavitating venturis for Emergency Feedwater Systems, designed as safety features to prevent pump run out and ensure flow to steam generators at nuclear power plants.
- Emergency Feedwater Air Accumulators Safety-related pressure vessels (51 inch diameter x 15 ft to 10 ft diameter x 16 ft) for backup compressed air systems used to operate critical feedwater air operated control valves at nuclear power plants.
- Emergency Diesel Generator Heat Exchanger Tube Bundles ASME Code Section III replacement heat exchanger tube bundles for Emergency Diesel Generators at nuclear facilities, featuring improved corrosion-resistant materials.
- Swagelok Nuclear Valves ASME Code and safety-related Swagelok valves including 50 series lift check valves, N series union-bonnet needle valves, CP/CPA inline check valves, V series instrument manifolds, UW bellows valves, and ball valves for nuclear applications.
- Pall Nuclear Filters Safety-related and ASME Section III Pall filter housings, vessels, vessel components, and replacement filter cartridges for nuclear power facilities in US, Canada, Latin America, and South Korea.
- Xylem/American Standard Heat Exchangers American Standard and ITT Standard replacement heat exchangers and spare parts for commercial nuclear power plants, including EDG lube oil coolers, jacket water coolers, intercoolers, and balance of plant heat exchangers.
- Watlow Nuclear Heating Solutions Safety-related and ASME Section III Watlow replacement parts including Pressurizer Heaters (up to 800°F, 2500 psi, 55 kW), EDG Immersion Heaters, and peripheral nuclear application heaters.
- NUCCORP Bladderless Pulsation Dampeners Patented bladderless pulsation dampeners using ASME Section III, Class 2 pressure vessel technology with adjustable acoustic dampening for positive displacement pump applications in nuclear power plants.
- Flexaseal ShellCool Heat Exchanger ShellCool water-cooled heat exchanger system for API 682 conforming Flush Plans 21, 22, 23, 41, 53B, 53C, 54, and 55 seal applications with ASME N Stamp availability.
- Carrier Hermetic Centrifugal Liquid Chiller Parts Safety-related and ASME Section III Carrier Hermetic Centrifugal Liquid Chiller replacement parts for essential HVAC, control building, turbine building, containment, control room, and radwaste systems at nuclear power facilities.
- Engineering Services ASME Code design reports, certified design specifications, commercial grade dedication, specialty engineering, prototype development, on-site support, finite element analysis, reverse engineering, obsolete part replacement, and validation of digital instrumentation for nuclear plant projects.
Quantifiable outcome
- Successfully delivered projects to every nuclear power plant in the United States and Canada
- +1 more outcomes
Companies that use NuSource
Customer profileNamed customers3 records
Segments2 records
Ideal customer profiles2 records
NuSource technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
NuSource partnerships and signals
Strategic signalPartnerships
Ten partnerships are on record, tiered core and minor.
- Flexaseal Engineered Seals and SystemscoreExclusive partnership for the ShellCool water-cooled heat exchanger system. NuSource is the exclusive provider for manufacturing, sales, and aftermarket support within the US for rotating equipment in nuclear safety related and ASME Section III applications for commercial nuclear power facilities, National Laboratories, and the naval nuclear propulsion industry.
- SwagelokcoreWorldwide exclusive agreement for NuSource to supply ASME Code and safety-related Swagelok valves to the commercial nuclear power industry. Swagelok provides manufacturing, testing and NDE while NuSource assumes responsibility for design, ASME Code and regulatory requirements, ANI inspections, and commercial grade dedication.
- CarrierminorPartnership with Carrier Air Conditioning to supply safety-related and ASME Section III Hermetic Centrifugal Liquid Chiller Replacement Parts to nuclear power facilities.
- WatlowcoreExclusive teaming agreement for NuSource to supply the full line of safety-related (10CFR50 Appendix B), ASME Section III and Commercial Grade Watlow replacement parts for nuclear power plants in the United States.
- NUCCORPcoreNuSource utilizes patented, proprietary bladderless pulsation dampener (BPD) technology from NUCCORP to provide the nuclear industry with a unique solution for dampening pressure pulses from positive displacement pumps.
- Xylem Inc. (American Standard/ITT Standard)coreNuSource is the exclusive distributor of Standard Xchange branded heat transfer products for commercial nuclear power plants. Effective October 3, 2013, NuSource became the exclusive order entry point for all Standard Xchange heat exchanger products for US nuclear plants.
- Pall CorporationcoreExclusive teaming agreement for NuSource to provide Safety Related (10 CFR 50 Appendix B) and ASME Section III Pall filter housings, vessels, vessel components and replacement parts for nuclear facilities in US, Canada, Latin America and Republic of Korea.
- MPR AssociatescoreMember company providing engineering expertise. NuSource integrates engineers from MPR Associates to provide expert staff for all engineering deliverables including ASME Code experts, I&C experts, and test & analysis efforts.
- Gavial Holdings (Gavial Engineering & Manufacturing)coreMember company providing electronics manufacturing capabilities. Operates 22,000 ft² dedicated electronics manufacturing space in Santa Maria, CA for analog & digital electronics, PCB assembly, cable assemblies under NQA-1 and 10 CFR 50 Appendix B.
- Met Weld InternationalcoreManufacturing partner for ASME fabrication at Altamont, NY facility. Operates 55,000 ft² dedicated manufacturing space with 55+ expert welders and fabricators, qualifying for ASME Section III, Section VIII, NQA-1 and 10CFR50 Appendix B.
Scale indicators8 records
Recent moves7 records
Expansion highlights5 records
NuSource competitors and assessment
Company assessmentDirect peers
- Curtiss-Wright Corporation: Curtiss-Wright's Nuclear Operations / nuclear-qualified manufacturing segment supplies ASME Section III safety-related equipment, pressure vessels, valves, pumps, and I&C components to commercial and naval nuclear plants worldwide, making it the closest large-cap analog to NuSource's safety-related hardware franchise.
- Holtec International: Holtec designs and manufactures a broad portfolio of nuclear safety-related capital equipment — including spent-fuel storage and transport casks, reactor internals, and heat exchangers — and shares NuSource's niche focus on hardware-only solutions for operating commercial and decommissioning nuclear plants.
- BWX Technologies (BWXT): BWXT manufactures nuclear components and fuel for commercial, naval, and government reactors, including ASME-qualified pressure boundary hardware and I&C systems; it is a direct comparable for NuSource's ASME Section III fabrication capability and nuclear-safety products.
- Energy Steel & Supply Co. Energy Steel is a privately held, nuclear-qualified fabricator that supplies ASME Section III safety-related fittings, supports, and pipe components to the US commercial nuclear fleet, sharing NuSource's niche focus on safety-related fabrication for the operating nuclear aftermarket.
Others
- Mirion Technologies: Mirion supplies radiation detection, measurement, and safety-related instrumentation used across the nuclear fuel cycle and operating reactors, overlapping with NuSource's nuclear-safety I&C and qualification activities from an adjacent, instrumentation-focused angle.
Broad incumbents
- Framatome: Framatome (formerly Areva NP) is a global nuclear OEM providing replacement components, engineered solutions, and outage services for PWR and BWR plants. Its installed-base services business competes for the same nuclear aftermarket retrofit and component-replacement spend that NuSource targets.
- Westinghouse Electric Company: Westinghouse supplies nuclear fuel, reactor designs, and a broad portfolio of safety-related replacement parts and services for the operating PWR fleet. While broader and OEM-scale compared with NuSource, Westinghouse is the incumbent whose aftermarket parts NuSource most frequently replaces or augments via like-for-like engineering.
- GE Hitachi Nuclear Energy (GEH): GEH supplies BWR fuel, services, and replacement components to global BWR plants, and competes with NuSource for service-related safety-related hardware, outage spares, and engineered replacements on the BWR portion of the US fleet.
Regional players
- Doosan Enerbility: Doosan Enerbility (formerly Doosan Heavy Industries) supplies nuclear reactors, steam generators, and ASME-qualified replacement components primarily to the South Korean and Middle Eastern nuclear markets, overlapping with NuSource's Korean reach under the Pall exclusive agreement.
- Equipos Nucleares S.A. (ENSA): ENSA is a Spanish nuclear equipment manufacturer producing reactor vessel internals, fuel handling tools, and ASME-qualified heavy components for European and Latin American nuclear plants; it is a regional peer in the same nuclear-qualified fabricated-equipment category as NuSource.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat6 records
Key risks6 records
Key highlights7 records
Customer concentration
NuSource social profiles
Digital presenceNuSource compliance and trust
Trust signalCompliance7 records
NuSource financial estimates
Financial estimateRevenue estimate
Valuation estimate
NuSource leadership team
Management profileNumber of profiles
Profiles6 records
NuSource funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
NuSource M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about NuSource
What does NuSource do?
NuSource manufactures and supplies safety-related hardware solutions to the commercial nuclear power industry, including ASME Section III pressure vessels, piping systems, core support structures, safety-related instrumentation and controls, and close-tolerance CNC machined components. The company complements its own fabrication with exclusive OEM partnerships (Swagelok, Pall, Watlow, Xylem/American Standard, NUCCORP, Flexaseal, Carrier) to provide like-for-like replacement parts, supported by engineering services including ASME Code design reports, reverse engineering, and commercial grade dedication.
Is NuSource a public or private company?
NuSource is a private company. It is classified as corporate owned and is currently operating.
When was NuSource founded?
NuSource was founded in 2012. It employs 11 to 50 people.
Where is NuSource based?
NuSource is headquartered in Alexandria, United States, in the North America region.
How does NuSource make money?
Three revenue lines are on record. Safety-Related Hardware Sales are the primary driver. The others are custom Fabrication Services and engineering Services.
Who are NuSource's main competitors?
Direct peers on record are Curtiss-Wright Corporation, Holtec International, BWX Technologies (BWXT) and Energy Steel & Supply Co.. Mirion Technologies is listed as an others. Broad incumbents are Framatome, Westinghouse Electric Company and GE Hitachi Nuclear Energy (GEH). Regional players are Doosan Enerbility and Equipos Nucleares S.A. (ENSA).
Does NuSource have an API?
No public API is recorded for NuSource.
What industry is NuSource in?
NuSource's product category is Nuclear Safety Hardware Manufacturing. Its primary akta.pro industry code is EUACADAO, Nuclear Power Plant Operations & Maintenance (O&M), with a secondary code of IMAHAEAF, Pressure Vessels, Columns & Storage Tanks (ASME/Process Vessels). Its NAICS code is 333998 and its SIC code is 3559.