Company lists · Data refreshed October 2026
Top 25 Nuclear facility contractors worldwide
RevenueBase identified 265 company matches for nuclear facility contractors worldwide as of October 2026 and tracks 31,005 professional contacts across them, including 5,047 with verified work emails. The United States is the largest market and Oak Ridge the largest hub.
This list covers company matches for nuclear facility contractors worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 18, 2026. Country and city lists for nuclear facility contractors follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest nuclear facility contractors worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 3,987 contacts → | ||||
Exact match “At BWX Technologies, Inc.(NYSE: BWXT), we are People Strong, Innovation Driven.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase | |||||
| 2 | 1,743 contacts → | ||||
Exact match “Orano DS fait partie du Groupe Orano, le fournisseur de référence du cycle du combustible nucléaire.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase | |||||
| 3 | 1,715 contacts → | ||||
Exact match “Onet Technologies has 40 years of experience in the nuclear industry, with a strong expertise in engineering and services for reactor maintenance; dismantling, decommissioning and…” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase | |||||
| 4 | 1,624 contacts → | ||||
Exact match “Subsidiary of the world-leading VINCI group, NUVIA is an international company that has been operating on highly regulated and sensitive industrial sites for over 60 years.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase | |||||
| 5 | 1,101 contacts → | ||||
Exact match “À propos de SPIE Nucléaire Filiale de SPIE France, SPIE Nucléaire est le partenaire de référence multi-technique dans la conception, la réalisation, les travaux de modification…” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase | |||||
| 6 | 584 contacts → | ||||
Exact match “KEPCO E&C was founded in 1975 with the objective of obtaining core technology.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase | |||||
| 7 | 480 contacts → | ||||
Exact match “TECNATOM was set up in 1957 as a Spanish engineering company specialising in guaranteeing the operation and maintenance of nuclear power plants to the highest levels of safety.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase | |||||
| 8 | 467 contacts → | ||||
Exact match “Navarro Research & Engineering is an award-winning federal contractor dedicated to partnering with our clients to overcome their most challenging environmental, technical, and…” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase | |||||
| 9 | 399 contacts → | ||||
Exact match “Representing the AIS Environmental and Nuclear business line, RSI is dedicated to advancing the missions of our clients in the environmental, nuclear, energy, construction, and…” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase | |||||
| 10 | 364 contacts → | ||||
Exact match “Se ocupa de la primera parte del ciclo de combustible nuclear (diseño, fabricación y abastecimiento de combustible) prestando servicios de ingeniería y combustible a las Centrales…” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase | |||||
| 11 | 301 contacts → | ||||
Exact match “Founded in 2003, Edgewater Technical Associates, LLC (Edgewater) is a New Mexico-based small business headquartered in Los Alamos, NM, with a national footprint supporting complex…” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase | |||||
| 12 | 299 contacts → | ||||
Exact match “We support our clients by delivering safe, practical and efficient solutions to complex nuclear challenges, with a strong focus on disposability.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase | |||||
| 13 | 249 contacts → | ||||
Exact match “Paragon tackles the most difficult challenges of the nuclear industry-those faced by the current operating fleet as well as the next generation of advanced reactors.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase | |||||
| 14 | 210 contacts → | ||||
Exact match “Partner for the nuclear industry Bilfinger has successfully supported and advised customers from the nuclear industry for decades.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase | |||||
| 15 | 206 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase | |||||
| 16 | 205 contacts → | ||||
Exact match “SMSI is a small business providing management and technical/engineering services to the DOE/NNSA, national laboratories, and industrial clients.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase | |||||
| 17 | 184 contacts → | ||||
Exact match “Nuclear for naval propulsion and peacefull research.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase | |||||
| 18 | 161 contacts → | ||||
Exact match “Spectra Tech is an engineering, environmental, and nuclear services company that focuses on providing high quality and cost-effective technical solutions for our Federal…” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase | |||||
| 19 | 135 contacts → | ||||
Exact match “Hi Tech Solutions provides services to the nuclear power generation industry in four main areas: outage services (plant outages and reactor maintenance), nuclear fuel cycle…” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase | |||||
| 20 | 128 contacts → | ||||
Exact match “Founded in New Mexico in 1975, Los Alamos Technical Associates provides technical and project management services to a varied clientèle including federal agencies, state…” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase | |||||
| 21 | 117 contacts → | ||||
Exact match “NAC International Inc.(NAC) is an industry-leading provider of engineering, consulting, and nuclear fuel management solutions for nuclear facility operators, fuel cycle companies…” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase | |||||
| 22 | 116 contacts → | ||||
Exact match “GEM Technologies, Inc.(GEM) is an award-winning federal contractor with more than 30 years of experience providing environmental, construction, facility management, and technical…” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase | |||||
| 23 | 116 contacts → | ||||
Exact match “At Atkins Nuclear Solutions US, we offer client solutions crafted by the best engineers and specialists in the industry, served with truly exceptional customer service.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase | |||||
| 24 | 104 contacts → | ||||
Exact match “HukariAscendent is a technical consulting and engineering company specializing in comprehensive engineering and technical services associated with the nuclear industry and power…” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase | |||||
| 25 | 85 contacts → | ||||
Exact match “ATOMPROEKT is a dynamically growing company that has successfully united the competences of the two leading design institutes of State Corporation Rosatom in a number of fields –…” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “nuclear facility contractors”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 265 nuclear facility contractors worldwide
See the full list, filter by size, metro and specialty, and access 5,047 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Nuclear facility contractors worldwide at a glance
As of Oct 18, 2026Companies by employee count
Email recency is reported on each country list linked below.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- Coverage
- Every country. Country and city lists for nuclear facility contractors are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “nuclear facility contractors” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 5,047 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on October 18, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Nuclear facility contractors by location
2 lists · largest firstEvery Nuclear facility contractors list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “nuclear facility contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many nuclear facility contractors are there worldwide?
RevenueBase identified 265 company matches for nuclear facility contractors worldwide as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
BWXT tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most nuclear facility contractors?
The United States leads with 108 companies, followed by France (31). Every nuclear facility contractors list by country and city is linked on this page.
Which city has the most nuclear facility contractors?
Oak Ridge leads with 9 company records, followed by Richland (4) and Albuquerque (3).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 5,047 professional contacts with verified work emails tracked across these 265 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 18, 2026.
Ready to reach these companies? Verified emails and direct dials for all 265 nuclear facility contractors worldwide. Start with a free account, no credit card.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
Company intelligence · public preview
Top 25 nuclear facility contractors worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 265 matching company records for nuclear facility contractors worldwide, with 31,005 tracked contacts and 5,047 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: October 18, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 nuclear facility contractors worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  BWXTbwxt.comHQ: Lynchburg, VA, United StatesReported employees: 5,001-10,000 | Lynchburg, VA, United States | 5,001-10,000 | Exact match | 3,987 contacts → |
“At BWX Technologies, Inc.(NYSE: BWXT), we are People Strong, Innovation Driven.” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Orano DSorano.groupHQ: Massy, FranceReported employees: 5,001-10,000 | Massy, France | 5,001-10,000 | Exact match | 1,743 contacts → |
“Orano DS fait partie du Groupe Orano, le fournisseur de référence du cycle du combustible nucléaire.” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Onet Technologiesonet.frHQ: Marseille, FranceReported employees: 1,001-5,000 | Marseille, France | 1,001-5,000 | Exact match | 1,715 contacts → |
“Onet Technologies has 40 years of experience in the nuclear industry, with a strong expertise in engineering and services for reactor maintenance; dismantling, decommissioning and…” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  NUVIAnuvia.comHQ: Rueil Malmaison, FranceReported employees: 1,001-5,000 | Rueil Malmaison, France | 1,001-5,000 | Exact match | 1,624 contacts → |
“Subsidiary of the world-leading VINCI group, NUVIA is an international company that has been operating on highly regulated and sensitive industrial sites for over 60 years.” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Spie Nucléairespie.comHQ: Cergy-pontoise Cedex, FranceReported employees: 1,001-5,000 | Cergy-pontoise Cedex, France | 1,001-5,000 | Exact match | 1,101 contacts → |
“À propos de SPIE Nucléaire Filiale de SPIE France, SPIE Nucléaire est le partenaire de référence multi-technique dans la conception, la réalisation, les travaux de modification…” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Kepco E&ckepco-enc.comHQ: Port Elgin, CanadaReported employees: 1,001-5,000 | Port Elgin, Canada | 1,001-5,000 | Exact match | 584 contacts → |
“KEPCO E&C was founded in 1975 with the objective of obtaining core technology.” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Tecnatomtecnatom.esHQ: San Sebastian De Los Reyes, SpainReported employees: 501-1,000 | San Sebastian De Los Reyes, Spain | 501-1,000 | Exact match | 480 contacts → |
“TECNATOM was set up in 1957 as a Spanish engineering company specialising in guaranteeing the operation and maintenance of nuclear power plants to the highest levels of safety.” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Navarro Research And Engineeringnavarro-inc.comHQ: Oak Ridge, TN, United StatesReported employees: 201-500 | Oak Ridge, TN, United States | 201-500 | Exact match | 467 contacts → |
“Navarro Research & Engineering is an award-winning federal contractor dedicated to partnering with our clients to overcome their most challenging environmental, technical, and…” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  RSIrsienv.comHQ: Oak Ridge, TN, United StatesReported employees: 501-1,000 | Oak Ridge, TN, United States | 501-1,000 | Exact match | 399 contacts → |
“Representing the AIS Environmental and Nuclear business line, RSI is dedicated to advancing the missions of our clients in the environmental, nuclear, energy, construction, and…” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | HQ: Madrid, SpainReported employees: 501-1,000 | Madrid, Spain | 501-1,000 | Exact match | 364 contacts → |
“Se ocupa de la primera parte del ciclo de combustible nuclear (diseño, fabricación y abastecimiento de combustible) prestando servicios de ingeniería y combustible a las Centrales…” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Edgewater Technical Associates, LLCedgewatertech.netHQ: Oak Ridge, TN, United StatesReported employees: 201-500 | Oak Ridge, TN, United States | 201-500 | Exact match | 301 contacts → |
“Founded in 2003, Edgewater Technical Associates, LLC (Edgewater) is a New Mexico-based small business headquartered in Los Alamos, NM, with a national footprint supporting complex…” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  NSG Environmental LTDnsgltd.comHQ: Chorley, United KingdomReported employees: 501-1,000 | Chorley, United Kingdom | 501-1,000 | Exact match | 299 contacts → |
“We support our clients by delivering safe, practical and efficient solutions to complex nuclear challenges, with a strong focus on disposability.” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Paragon Energy Solutionsparagones.comHQ: Fort Worth, TX, United StatesReported employees: 201-500 | Fort Worth, TX, United States | 201-500 | Exact match | 249 contacts → |
“Paragon tackles the most difficult challenges of the nuclear industry-those faced by the current operating fleet as well as the next generation of advanced reactors.” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Bilfinger Nuclearbilfinger.comHQ: Montrouge, FranceReported employees: 1,001-5,000 | Montrouge, France | 1,001-5,000 | Exact match | 210 contacts → |
“Partner for the nuclear industry Bilfinger has successfully supported and advised customers from the nuclear industry for decades.” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Framatome UKframatome.comHQ: Bristol, United KingdomReported employees: 201-500 | Bristol, United Kingdom | 201-500 | Exact match | 206 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 16 | HQ: Albuquerque, NM, United StatesReported employees: 201-500 | Albuquerque, NM, United States | 201-500 | Exact match | 205 contacts → |
“SMSI is a small business providing management and technical/engineering services to the DOE/NNSA, national laboratories, and industrial clients.” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Areva TAareva.comHQ: FranceReported employees: 5,001-10,000 | France | 5,001-10,000 | Exact match | 184 contacts → |
“Nuclear for naval propulsion and peacefull research.” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Spectra Tech, INCspectratechinc.comHQ: Oak Ridge, TN, United StatesReported employees: 201-500 | Oak Ridge, TN, United States | 201-500 | Exact match | 161 contacts → |
“Spectra Tech is an engineering, environmental, and nuclear services company that focuses on providing high quality and cost-effective technical solutions for our Federal…” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  HI Tech Solutionshtsnuclear.comHQ: Kennewick, WA, United StatesReported employees: 501-1,000 | Kennewick, WA, United States | 501-1,000 | Exact match | 135 contacts → |
“Hi Tech Solutions provides services to the nuclear power generation industry in four main areas: outage services (plant outages and reactor maintenance), nuclear fuel cycle…” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  LATAlata.comHQ: Albuquerque, NM, United StatesReported employees: 51-200 | Albuquerque, NM, United States | 51-200 | Exact match | 128 contacts → |
“Founded in New Mexico in 1975, Los Alamos Technical Associates provides technical and project management services to a varied clientèle including federal agencies, state…” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  NAC Internationalnacintl.comHQ: Peachtree Corners, GA, United StatesReported employees: 51-200 | Peachtree Corners, GA, United States | 51-200 | Exact match | 117 contacts → |
“NAC International Inc.(NAC) is an industry-leading provider of engineering, consulting, and nuclear fuel management solutions for nuclear facility operators, fuel cycle companies…” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | GEM Technologies, INCgemtechnologiesinc.com HQ: Knoxville, TN, United StatesReported employees: 201-500 | Knoxville, TN, United States | 201-500 | Exact match | 116 contacts → |
“GEM Technologies, Inc.(GEM) is an award-winning federal contractor with more than 30 years of experience providing environmental, construction, facility management, and technical…” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Atkins Nuclear Solutions USatkinsglobal.comHQ: Charlotte, NC, United StatesReported employees: 51-200 | Charlotte, NC, United States | 51-200 | Exact match | 116 contacts → |
“At Atkins Nuclear Solutions US, we offer client solutions crafted by the best engineers and specialists in the industry, served with truly exceptional customer service.” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Hukariascendenthukari.comHQ: Wheat Ridge, CO, United StatesReported employees: 51-200 | Wheat Ridge, CO, United States | 51-200 | Exact match | 104 contacts → |
“HukariAscendent is a technical consulting and engineering company specializing in comprehensive engineering and technical services associated with the nuclear industry and power…” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Atomproekt Rosatomatomproekt.com HQ: Saint-petersburg, RussiaReported employees: 1,001-5,000 | Saint-petersburg, Russia | 1,001-5,000 | Exact match | 85 contacts → |
“ATOMPROEKT is a dynamically growing company that has successfully united the competences of the two leading design institutes of State Corporation Rosatom in a number of fields –…” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 265 company matches
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Nuclear facility contractors: dataset insights
October 18, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
265 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 265 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: October 18, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Nuclear facility contractors by location
2 lists · largest firstEvery Nuclear facility contractors list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for nuclear facility contractors?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many nuclear facility contractors did RevenueBase find worldwide?
The saved snapshot records 265 matching company records, 31,005 tracked contacts and 5,047 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: October 18, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 nuclear facility contractors worldwide. Snapshot: October 18, 2026. https://revenuebase.ai/companies/browse/nuclear-facility-contractors.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 nuclear facility contractors worldwide
RevenueBase records 265 matching company records for nuclear facility contractors worldwide, with 31,005 tracked contacts and 5,047 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: October 18, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 nuclear facility contractors worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | BWXTbwxt.com HQ: Lynchburg, VA, United StatesReported employees: 5,001-10,000 | Lynchburg, VA, United States | 5,001-10,000 | Exact match | 3,987 contacts → |
“At BWX Technologies, Inc.(NYSE: BWXT), we are People Strong, Innovation Driven.” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Orano DSorano.group HQ: Massy, FranceReported employees: 5,001-10,000 | Massy, France | 5,001-10,000 | Exact match | 1,743 contacts → |
“Orano DS fait partie du Groupe Orano, le fournisseur de référence du cycle du combustible nucléaire.” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Onet Technologiesonet.fr HQ: Marseille, FranceReported employees: 1,001-5,000 | Marseille, France | 1,001-5,000 | Exact match | 1,715 contacts → |
“Onet Technologies has 40 years of experience in the nuclear industry, with a strong expertise in engineering and services for reactor maintenance; dismantling, decommissioning and…” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | NUVIAnuvia.com HQ: Rueil Malmaison, FranceReported employees: 1,001-5,000 | Rueil Malmaison, France | 1,001-5,000 | Exact match | 1,624 contacts → |
“Subsidiary of the world-leading VINCI group, NUVIA is an international company that has been operating on highly regulated and sensitive industrial sites for over 60 years.” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Spie Nucléairespie.com HQ: Cergy-pontoise Cedex, FranceReported employees: 1,001-5,000 | Cergy-pontoise Cedex, France | 1,001-5,000 | Exact match | 1,101 contacts → |
“À propos de SPIE Nucléaire Filiale de SPIE France, SPIE Nucléaire est le partenaire de référence multi-technique dans la conception, la réalisation, les travaux de modification…” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Kepco E&ckepco-enc.com HQ: Port Elgin, CanadaReported employees: 1,001-5,000 | Port Elgin, Canada | 1,001-5,000 | Exact match | 584 contacts → |
“KEPCO E&C was founded in 1975 with the objective of obtaining core technology.” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Tecnatomtecnatom.es HQ: San Sebastian De Los Reyes, SpainReported employees: 501-1,000 | San Sebastian De Los Reyes, Spain | 501-1,000 | Exact match | 480 contacts → |
“TECNATOM was set up in 1957 as a Spanish engineering company specialising in guaranteeing the operation and maintenance of nuclear power plants to the highest levels of safety.” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Navarro Research And Engineeringnavarro-inc.com HQ: Oak Ridge, TN, United StatesReported employees: 201-500 | Oak Ridge, TN, United States | 201-500 | Exact match | 467 contacts → |
“Navarro Research & Engineering is an award-winning federal contractor dedicated to partnering with our clients to overcome their most challenging environmental, technical, and…” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | RSIrsienv.com HQ: Oak Ridge, TN, United StatesReported employees: 501-1,000 | Oak Ridge, TN, United States | 501-1,000 | Exact match | 399 contacts → |
“Representing the AIS Environmental and Nuclear business line, RSI is dedicated to advancing the missions of our clients in the environmental, nuclear, energy, construction, and…” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | HQ: Madrid, SpainReported employees: 501-1,000 | Madrid, Spain | 501-1,000 | Exact match | 364 contacts → |
“Se ocupa de la primera parte del ciclo de combustible nuclear (diseño, fabricación y abastecimiento de combustible) prestando servicios de ingeniería y combustible a las Centrales…” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Edgewater Technical Associates, LLCedgewatertech.net HQ: Oak Ridge, TN, United StatesReported employees: 201-500 | Oak Ridge, TN, United States | 201-500 | Exact match | 301 contacts → |
“Founded in 2003, Edgewater Technical Associates, LLC (Edgewater) is a New Mexico-based small business headquartered in Los Alamos, NM, with a national footprint supporting complex…” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | NSG Environmental LTDnsgltd.com HQ: Chorley, United KingdomReported employees: 501-1,000 | Chorley, United Kingdom | 501-1,000 | Exact match | 299 contacts → |
“We support our clients by delivering safe, practical and efficient solutions to complex nuclear challenges, with a strong focus on disposability.” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Paragon Energy Solutionsparagones.com HQ: Fort Worth, TX, United StatesReported employees: 201-500 | Fort Worth, TX, United States | 201-500 | Exact match | 249 contacts → |
“Paragon tackles the most difficult challenges of the nuclear industry-those faced by the current operating fleet as well as the next generation of advanced reactors.” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Bilfinger Nuclearbilfinger.com HQ: Montrouge, FranceReported employees: 1,001-5,000 | Montrouge, France | 1,001-5,000 | Exact match | 210 contacts → |
“Partner for the nuclear industry Bilfinger has successfully supported and advised customers from the nuclear industry for decades.” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Framatome UKframatome.com HQ: Bristol, United KingdomReported employees: 201-500 | Bristol, United Kingdom | 201-500 | Exact match | 206 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 16 | HQ: Albuquerque, NM, United StatesReported employees: 201-500 | Albuquerque, NM, United States | 201-500 | Exact match | 205 contacts → |
“SMSI is a small business providing management and technical/engineering services to the DOE/NNSA, national laboratories, and industrial clients.” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Areva TAareva.com HQ: FranceReported employees: 5,001-10,000 | France | 5,001-10,000 | Exact match | 184 contacts → |
“Nuclear for naval propulsion and peacefull research.” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Spectra Tech, INCspectratechinc.com HQ: Oak Ridge, TN, United StatesReported employees: 201-500 | Oak Ridge, TN, United States | 201-500 | Exact match | 161 contacts → |
“Spectra Tech is an engineering, environmental, and nuclear services company that focuses on providing high quality and cost-effective technical solutions for our Federal…” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | HI Tech Solutionshtsnuclear.com HQ: Kennewick, WA, United StatesReported employees: 501-1,000 | Kennewick, WA, United States | 501-1,000 | Exact match | 135 contacts → |
“Hi Tech Solutions provides services to the nuclear power generation industry in four main areas: outage services (plant outages and reactor maintenance), nuclear fuel cycle…” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | LATAlata.com HQ: Albuquerque, NM, United StatesReported employees: 51-200 | Albuquerque, NM, United States | 51-200 | Exact match | 128 contacts → |
“Founded in New Mexico in 1975, Los Alamos Technical Associates provides technical and project management services to a varied clientèle including federal agencies, state…” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | NAC Internationalnacintl.com HQ: Peachtree Corners, GA, United StatesReported employees: 51-200 | Peachtree Corners, GA, United States | 51-200 | Exact match | 117 contacts → |
“NAC International Inc.(NAC) is an industry-leading provider of engineering, consulting, and nuclear fuel management solutions for nuclear facility operators, fuel cycle companies…” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | GEM Technologies, INCgemtechnologiesinc.com HQ: Knoxville, TN, United StatesReported employees: 201-500 | Knoxville, TN, United States | 201-500 | Exact match | 116 contacts → |
“GEM Technologies, Inc.(GEM) is an award-winning federal contractor with more than 30 years of experience providing environmental, construction, facility management, and technical…” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Atkins Nuclear Solutions USatkinsglobal.com HQ: Charlotte, NC, United StatesReported employees: 51-200 | Charlotte, NC, United States | 51-200 | Exact match | 116 contacts → |
“At Atkins Nuclear Solutions US, we offer client solutions crafted by the best engineers and specialists in the industry, served with truly exceptional customer service.” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Hukariascendenthukari.com HQ: Wheat Ridge, CO, United StatesReported employees: 51-200 | Wheat Ridge, CO, United States | 51-200 | Exact match | 104 contacts → |
“HukariAscendent is a technical consulting and engineering company specializing in comprehensive engineering and technical services associated with the nuclear industry and power…” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Atomproekt Rosatomatomproekt.com HQ: Saint-petersburg, RussiaReported employees: 1,001-5,000 | Saint-petersburg, Russia | 1,001-5,000 | Exact match | 85 contacts → |
“ATOMPROEKT is a dynamically growing company that has successfully united the competences of the two leading design institutes of State Corporation Rosatom in a number of fields –…” Recorded description excerpt · October 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Nuclear facility contractors: dataset insights
October 18, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
265 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 265 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: October 18, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Nuclear facility contractors by location
2 lists · largest firstEvery Nuclear facility contractors list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for nuclear facility contractors?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many nuclear facility contractors did RevenueBase find worldwide?
The saved snapshot records 265 matching company records, 31,005 tracked contacts and 5,047 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: October 18, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 nuclear facility contractors worldwide. Snapshot: October 18, 2026. https://revenuebase.ai/companies/browse/nuclear-facility-contractors.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗