Company lists · Data refreshed September 2026
Top 25 Reactor safety assessment companies based in the United States
RevenueBase identified 59 company matches for reactor safety assessment companies associated with the United States as of September 2026 and tracks 2,423 professional contacts across them, including 496 with verified work emails. Oak Ridge is the largest hub.
This list covers company matches for reactor safety assessment companies associated with the United States, 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 September 21, 2026.
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 reactor safety assessment companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 245 contacts → | ||||
Exact match “Founded in 1977 Sonic Systems International (SSI) is a full-service quality-consulting firm serving the nuclear power generation utility industry.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 2 | 234 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 · Sep 21, 2026 · View company records in RevenueBase | |||||
| 3 | 162 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 · Sep 21, 2026 · View company records in RevenueBase | |||||
| 4 | 129 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 · Sep 21, 2026 · View company records in RevenueBase | |||||
| 5 | 118 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 · Sep 21, 2026 · View company records in RevenueBase | |||||
| 6 | 60 contacts → | ||||
Exact match “Fauske & Associates (FAI) is a world leader in nuclear, industrial and chemical process safety.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 7 | 47 contacts → | ||||
Exact match “EXCEL has evolved over the last four decades to meet the needs of the nuclear energy industry.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 8 | 42 contacts → | ||||
Exact match “Analysis and Measurement Services Corporation (AMS) is a nuclear engineering consulting firm and recognized market leader in providing the worldwide nuclear power industry with…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 9 | 38 contacts → | ||||
Exact match “Established in 1987, Master-Lee Energy Services was founded to provide the commercial Nuclear Power Industry with engineering, reactor services, decontamination, Reactor Coolant…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 10 | 36 contacts → | ||||
Exact match “At Paschal Solutions, we are more than engineers-we are problem solvers, innovators, and trusted partners in providing nuclear safety and specialized nuclear engineering technical…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 11 | 32 contacts → | ||||
Exact match “Studsvik Scandpower Group is a subsidiary of Studsvik AB (STO:SVIK), and specializes in nuclear engineering simulation software that enables nuclear engineers to design nuclear…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 12 | 16 contacts → | ||||
Exact match “International Radiation Safety Consulting (IRSC) specializes in government safety approvals of instruments containing radioactive devices.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 13 | 12 contacts → | ||||
Exact match “EPM is a multi-discipline engineering company that provides cost-effective solutions for safe and reliable operation of nuclear power plants.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 14 | 11 contacts → | ||||
Exact match “FPoliSolutions specializes in the execution of complex analytical projects for industry segments that demands absolute reliability and safety.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 15 | 11 contacts → | ||||
Exact match “Whether your goal is to maintain an existing reactor, decommission an old reactor, or design a new one, TransWare Enterprises Inc.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 16 | 9 contacts → | ||||
Exact match “Licensed Radiation Safety Consultants and Service Company established in 1978 supporting the needs of radiation safety programs for all research laboratories, medical facilities…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 17 | 8 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 18 | 7 contacts → | ||||
Exact match “Radiological Solutions (RSI) is a nuclear engineering and consulting firm specializing in water chemistry optimization, radiological dose management, gamma scanning, and…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 19 | 7 contacts → | ||||
Exact match “ARS is a growing, international, and multi-disciplinary company with a strong and diverse client base.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 20 | 6 contacts → | ||||
Exact match “Environmental Restoration Group, Inc.(ERG) was incorporated in New Mexico in 1991 to provide consulting services to the nuclear industry.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 21 | 5 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 22 | 4 contacts → | ||||
Exact match “Website: NWS Technologies is a privately owned Nuclear Valve Service Company in the business of off-site testing and repairing safety/relief valves for nuclear power plants.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 23 | 3 contacts → | ||||
Exact match “PMC Engineering Solutions is a full service engineering company that specializes in ASME Code Compliance evaluation and repairs in support of plant operation, license renewal and…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 24 | 2 contacts → | ||||
Exact match “Radiological Health Safety and Environmental Consulting- Auxier & Associates is a small group of professionals providing technical consulting services in health physics and…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 25 | 2 contacts → | ||||
Exact match “DIFREX is a Florida based team of chemical and process engineers with years of experience in designing, developing and servicing reactors and auxiliary systems.” Recorded in the RevenueBase company graph · Sep 21, 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 “reactor safety assessment companies”. 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 59 reactor safety assessment companies based in the United States
See the full list, filter by size, metro and specialty, and access 496 tracked professional contacts with verified work emails. Direct dials are available where recorded.
Free signup · no credit card
Reactor safety assessment companies based in the United States at a glance
As of Sep 21, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 59 companies.
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.
- What qualifies
- Company records associated with the United States whose business descriptions match “reactor safety assessment companies” 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 496 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 September 21, 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.
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 “reactor safety assessment companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many reactor safety assessment companies are there based in the United States?
RevenueBase identified 59 company matches for reactor safety assessment companies associated with the United States as of September 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?
Sonic Systems tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most reactor safety assessment companies?
Oak Ridge leads with 3 company records, followed by Cary (2) and Duluth (2).
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 496 professional contacts with verified work emails tracked across these 59 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 September 21, 2026.
Ready to reach these companies? Verified emails and direct dials for all 59 reactor safety assessment companies based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Reactor safety assessment companies by geography
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
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Reactor safety assessment companies based in France
- AI companies based in the United States
- Cybersecurity companies based in the United States
- Manufacturing companies based in the United States
- Media companies based in the United States
- Oil and gas companies based in the United States
Company intelligence · public preview
Top 25 reactor safety assessment companies based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 59 matching company records for reactor safety assessment companies based in the United States, with 2,423 tracked contacts and 496 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: September 21, 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 reactor safety assessment companies based in the United States
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 |  Sonic Systemssonicsystems.comHQ: Wilmington, NC, United StatesReported employees: 501-1,000 | Wilmington, NC, United States | 501-1,000 | Exact match | 245 contacts → |
“Founded in 1977 Sonic Systems International (SSI) is a full-service quality-consulting firm serving the nuclear power generation utility industry.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Paragon Energy Solutionsparagones.comHQ: Fort Worth, TX, United StatesReported employees: 201-500 | Fort Worth, TX, United States | 201-500 | Exact match | 234 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 · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Spectra Tech, INCspectratechinc.comHQ: Oak Ridge, TN, United StatesReported employees: 201-500 | Oak Ridge, TN, United States | 201-500 | Exact match | 162 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 · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  HI Tech Solutionshtsnuclear.comHQ: Kennewick, WA, United StatesReported employees: 501-1,000 | Kennewick, WA, United States | 501-1,000 | Exact match | 129 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 · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Atkins Nuclear Solutions USatkinsglobal.comHQ: Charlotte, NC, United StatesReported employees: 51-200 | Charlotte, NC, United States | 51-200 | Exact match | 118 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 · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Fauske & Associatesfauske.comHQ: Burr Ridge, IL, United StatesReported employees: 51-200 | Burr Ridge, IL, United States | 51-200 | Exact match | 60 contacts → |
“Fauske & Associates (FAI) is a world leader in nuclear, industrial and chemical process safety.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Excel Services Corporationexcelservices.comHQ: Rockville, MD, United StatesReported employees: 51-200 | Rockville, MD, United States | 51-200 | Exact match | 47 contacts → |
“EXCEL has evolved over the last four decades to meet the needs of the nuclear energy industry.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | HQ: Knoxville, TN, United StatesReported employees: 51-200 | Knoxville, TN, United States | 51-200 | Exact match | 42 contacts → |
“Analysis and Measurement Services Corporation (AMS) is a nuclear engineering consulting firm and recognized market leader in providing the worldwide nuclear power industry with…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Master-Lee Energy Services Corporationmasterlee.comHQ: Latrobe, PA, United StatesReported employees: 201-500 | Latrobe, PA, United States | 201-500 | Exact match | 38 contacts → |
“Established in 1987, Master-Lee Energy Services was founded to provide the commercial Nuclear Power Industry with engineering, reactor services, decontamination, Reactor Coolant…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Paschal Solutions, INCpaschalsolutions.comHQ: Oak Ridge, TN, United StatesReported employees: 51-200 | Oak Ridge, TN, United States | 51-200 | Exact match | 36 contacts → |
“At Paschal Solutions, we are more than engineers-we are problem solvers, innovators, and trusted partners in providing nuclear safety and specialized nuclear engineering technical…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Studsvik Scandpowerstudsvik.comHQ: Idaho Falls, United StatesReported employees: 51-200 | Idaho Falls, United States | 51-200 | Exact match | 32 contacts → |
“Studsvik Scandpower Group is a subsidiary of Studsvik AB (STO:SVIK), and specializes in nuclear engineering simulation software that enables nuclear engineers to design nuclear…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Irsc, INCradiationsafetyconsultants.com HQ: Spring Hill, FL, United StatesReported employees: 1-10 | Spring Hill, FL, United States | 1-10 | Exact match | 16 contacts → |
“International Radiation Safety Consulting (IRSC) specializes in government safety approvals of instruments containing radioactive devices.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Engineering Planning And Management, INCepm-inc.com HQ: Framingham, MA, United StatesReported employees: 51-200 | Framingham, MA, United States | 51-200 | Exact match | 12 contacts → |
“EPM is a multi-discipline engineering company that provides cost-effective solutions for safe and reliable operation of nuclear power plants.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Fpolisolutionsfpolisolutions.comHQ: Pittsburgh, PA, United StatesReported employees: 1-10 | Pittsburgh, PA, United States | 1-10 | Exact match | 11 contacts → |
“FPoliSolutions specializes in the execution of complex analytical projects for industry segments that demands absolute reliability and safety.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Transware Enterprises INCtransware.netHQ: St. Louis, MO, United StatesReported employees: 11-50 | St. Louis, MO, United States | 11-50 | Exact match | 11 contacts → |
“Whether your goal is to maintain an existing reactor, decommission an old reactor, or design a new one, TransWare Enterprises Inc.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | R.M. Wester And Associates, INCrmwester.com HQ: St. Peters, MO, United StatesReported employees: 11-50 | St. Peters, MO, United States | 11-50 | Exact match | 9 contacts → |
“Licensed Radiation Safety Consultants and Service Company established in 1978 supporting the needs of radiation safety programs for all research laboratories, medical facilities…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | HQ: Richland, WA, United StatesReported employees: 1-10 | Richland, WA, United States | 1-10 | Exact match | 8 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 18 |  Radiological Solutions INCradiologicalsolutions.comHQ: Rockdale, IL, United StatesReported employees: 1-10 | Rockdale, IL, United States | 1-10 | Exact match | 7 contacts → |
“Radiological Solutions (RSI) is a nuclear engineering and consulting firm specializing in water chemistry optimization, radiological dose management, gamma scanning, and…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Appendix R Solutionsars-corp.netHQ: Glen Allen, VA, United StatesReported employees: 11-50 | Glen Allen, VA, United States | 11-50 | Exact match | 7 contacts → |
“ARS is a growing, international, and multi-disciplinary company with a strong and diverse client base.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Environmental Restoration Groupergoffice.comHQ: Albuquerque, NM, United StatesReported employees: 11-50 | Albuquerque, NM, United States | 11-50 | Exact match | 6 contacts → |
“Environmental Restoration Group, Inc.(ERG) was incorporated in New Mexico in 1991 to provide consulting services to the nuclear industry.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Grove Engineering, INCradiationsoftware.comHQ: Lynchburg, VA, United StatesReported employees: 1-10 | Lynchburg, VA, United States | 1-10 | Exact match | 5 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 22 | NWS Technologies, LLCnwstechnologies.com HQ: Spartanburg, SC, United StatesReported employees: 11-50 | Spartanburg, SC, United States | 11-50 | Exact match | 4 contacts → |
“Website: NWS Technologies is a privately owned Nuclear Valve Service Company in the business of off-site testing and repairing safety/relief valves for nuclear power plants.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | PMC Engineering Solutions, INCpmcengineering.com HQ: Pottstown, PA, United StatesReported employees: 11-50 | Pottstown, PA, United States | 11-50 | Exact match | 3 contacts → |
“PMC Engineering Solutions is a full service engineering company that specializes in ASME Code Compliance evaluation and repairs in support of plant operation, license renewal and…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Auxier & Associates, INCauxier.com HQ: Knoxville, TN, United StatesReported employees: 1-10 | Knoxville, TN, United States | 1-10 | Exact match | 2 contacts → |
“Radiological Health Safety and Environmental Consulting- Auxier & Associates is a small group of professionals providing technical consulting services in health physics and…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Difrex LLC Nexgen Reactor Designdifrex.comHQ: Cape Canaveral, FL, United StatesReported employees: 1-10 | Cape Canaveral, FL, United States | 1-10 | Exact match | 2 contacts → |
“DIFREX is a Florida based team of chemical and process engineers with years of experience in designing, developing and servicing reactors and auxiliary systems.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 59 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Reactor safety assessment companies: dataset insights
September 21, 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
58 records in the displayed employee bands.
1 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 worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 59 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: September 21, 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 ↗
Questions about this company list
What does Exact match mean for reactor safety assessment companies?
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 reactor safety assessment companies did RevenueBase find based in the United States?
The saved snapshot records 59 matching company records, 2,423 tracked contacts and 496 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: September 21, 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.
Related lists
Reactor safety assessment companies by geography
Cite this list
RevenueBase Data Team. Top 25 reactor safety assessment companies based in the United States. Snapshot: September 21, 2026. https://revenuebase.ai/companies/reactor-safety-assessment-companies/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Reactor safety assessment companies based in France
- AI companies based in the United States
- Cybersecurity companies based in the United States
- Manufacturing companies based in the United States
- Media companies based in the United States
- Oil and gas companies based in the United States
Company intelligence · public preview
Top 25 reactor safety assessment companies based in the United States
RevenueBase records 59 matching company records for reactor safety assessment companies based in the United States, with 2,423 tracked contacts and 496 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: September 21, 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 reactor safety assessment companies based in the United States
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 | Sonic Systemssonicsystems.com HQ: Wilmington, NC, United StatesReported employees: 501-1,000 | Wilmington, NC, United States | 501-1,000 | Exact match | 245 contacts → |
“Founded in 1977 Sonic Systems International (SSI) is a full-service quality-consulting firm serving the nuclear power generation utility industry.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Paragon Energy Solutionsparagones.com HQ: Fort Worth, TX, United StatesReported employees: 201-500 | Fort Worth, TX, United States | 201-500 | Exact match | 234 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 · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Spectra Tech, INCspectratechinc.com HQ: Oak Ridge, TN, United StatesReported employees: 201-500 | Oak Ridge, TN, United States | 201-500 | Exact match | 162 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 · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | HI Tech Solutionshtsnuclear.com HQ: Kennewick, WA, United StatesReported employees: 501-1,000 | Kennewick, WA, United States | 501-1,000 | Exact match | 129 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 · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Atkins Nuclear Solutions USatkinsglobal.com HQ: Charlotte, NC, United StatesReported employees: 51-200 | Charlotte, NC, United States | 51-200 | Exact match | 118 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 · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Fauske & Associatesfauske.com HQ: Burr Ridge, IL, United StatesReported employees: 51-200 | Burr Ridge, IL, United States | 51-200 | Exact match | 60 contacts → |
“Fauske & Associates (FAI) is a world leader in nuclear, industrial and chemical process safety.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Excel Services Corporationexcelservices.com HQ: Rockville, MD, United StatesReported employees: 51-200 | Rockville, MD, United States | 51-200 | Exact match | 47 contacts → |
“EXCEL has evolved over the last four decades to meet the needs of the nuclear energy industry.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | HQ: Knoxville, TN, United StatesReported employees: 51-200 | Knoxville, TN, United States | 51-200 | Exact match | 42 contacts → |
“Analysis and Measurement Services Corporation (AMS) is a nuclear engineering consulting firm and recognized market leader in providing the worldwide nuclear power industry with…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Master-Lee Energy Services Corporationmasterlee.com HQ: Latrobe, PA, United StatesReported employees: 201-500 | Latrobe, PA, United States | 201-500 | Exact match | 38 contacts → |
“Established in 1987, Master-Lee Energy Services was founded to provide the commercial Nuclear Power Industry with engineering, reactor services, decontamination, Reactor Coolant…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Paschal Solutions, INCpaschalsolutions.com HQ: Oak Ridge, TN, United StatesReported employees: 51-200 | Oak Ridge, TN, United States | 51-200 | Exact match | 36 contacts → |
“At Paschal Solutions, we are more than engineers-we are problem solvers, innovators, and trusted partners in providing nuclear safety and specialized nuclear engineering technical…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Studsvik Scandpowerstudsvik.com HQ: Idaho Falls, United StatesReported employees: 51-200 | Idaho Falls, United States | 51-200 | Exact match | 32 contacts → |
“Studsvik Scandpower Group is a subsidiary of Studsvik AB (STO:SVIK), and specializes in nuclear engineering simulation software that enables nuclear engineers to design nuclear…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Irsc, INCradiationsafetyconsultants.com HQ: Spring Hill, FL, United StatesReported employees: 1-10 | Spring Hill, FL, United States | 1-10 | Exact match | 16 contacts → |
“International Radiation Safety Consulting (IRSC) specializes in government safety approvals of instruments containing radioactive devices.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Engineering Planning And Management, INCepm-inc.com HQ: Framingham, MA, United StatesReported employees: 51-200 | Framingham, MA, United States | 51-200 | Exact match | 12 contacts → |
“EPM is a multi-discipline engineering company that provides cost-effective solutions for safe and reliable operation of nuclear power plants.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Fpolisolutionsfpolisolutions.com HQ: Pittsburgh, PA, United StatesReported employees: 1-10 | Pittsburgh, PA, United States | 1-10 | Exact match | 11 contacts → |
“FPoliSolutions specializes in the execution of complex analytical projects for industry segments that demands absolute reliability and safety.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Transware Enterprises INCtransware.net HQ: St. Louis, MO, United StatesReported employees: 11-50 | St. Louis, MO, United States | 11-50 | Exact match | 11 contacts → |
“Whether your goal is to maintain an existing reactor, decommission an old reactor, or design a new one, TransWare Enterprises Inc.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | R.M. Wester And Associates, INCrmwester.com HQ: St. Peters, MO, United StatesReported employees: 11-50 | St. Peters, MO, United States | 11-50 | Exact match | 9 contacts → |
“Licensed Radiation Safety Consultants and Service Company established in 1978 supporting the needs of radiation safety programs for all research laboratories, medical facilities…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | HQ: Richland, WA, United StatesReported employees: 1-10 | Richland, WA, United States | 1-10 | Exact match | 8 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 18 | Radiological Solutions INCradiologicalsolutions.com HQ: Rockdale, IL, United StatesReported employees: 1-10 | Rockdale, IL, United States | 1-10 | Exact match | 7 contacts → |
“Radiological Solutions (RSI) is a nuclear engineering and consulting firm specializing in water chemistry optimization, radiological dose management, gamma scanning, and…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Appendix R Solutionsars-corp.net HQ: Glen Allen, VA, United StatesReported employees: 11-50 | Glen Allen, VA, United States | 11-50 | Exact match | 7 contacts → |
“ARS is a growing, international, and multi-disciplinary company with a strong and diverse client base.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Environmental Restoration Groupergoffice.com HQ: Albuquerque, NM, United StatesReported employees: 11-50 | Albuquerque, NM, United States | 11-50 | Exact match | 6 contacts → |
“Environmental Restoration Group, Inc.(ERG) was incorporated in New Mexico in 1991 to provide consulting services to the nuclear industry.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Grove Engineering, INCradiationsoftware.com HQ: Lynchburg, VA, United StatesReported employees: 1-10 | Lynchburg, VA, United States | 1-10 | Exact match | 5 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 22 | NWS Technologies, LLCnwstechnologies.com HQ: Spartanburg, SC, United StatesReported employees: 11-50 | Spartanburg, SC, United States | 11-50 | Exact match | 4 contacts → |
“Website: NWS Technologies is a privately owned Nuclear Valve Service Company in the business of off-site testing and repairing safety/relief valves for nuclear power plants.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | PMC Engineering Solutions, INCpmcengineering.com HQ: Pottstown, PA, United StatesReported employees: 11-50 | Pottstown, PA, United States | 11-50 | Exact match | 3 contacts → |
“PMC Engineering Solutions is a full service engineering company that specializes in ASME Code Compliance evaluation and repairs in support of plant operation, license renewal and…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Auxier & Associates, INCauxier.com HQ: Knoxville, TN, United StatesReported employees: 1-10 | Knoxville, TN, United States | 1-10 | Exact match | 2 contacts → |
“Radiological Health Safety and Environmental Consulting- Auxier & Associates is a small group of professionals providing technical consulting services in health physics and…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Difrex LLC Nexgen Reactor Designdifrex.com HQ: Cape Canaveral, FL, United StatesReported employees: 1-10 | Cape Canaveral, FL, United States | 1-10 | Exact match | 2 contacts → |
“DIFREX is a Florida based team of chemical and process engineers with years of experience in designing, developing and servicing reactors and auxiliary systems.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 59 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Reactor safety assessment companies: dataset insights
September 21, 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
58 records in the displayed employee bands.
1 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 worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 59 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: September 21, 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 ↗
Questions about this company list
What does Exact match mean for reactor safety assessment companies?
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 reactor safety assessment companies did RevenueBase find based in the United States?
The saved snapshot records 59 matching company records, 2,423 tracked contacts and 496 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: September 21, 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.
Related lists
Reactor safety assessment companies by geography
Cite this list
RevenueBase Data Team. Top 25 reactor safety assessment companies based in the United States. Snapshot: September 21, 2026. https://revenuebase.ai/companies/reactor-safety-assessment-companies/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Reactor safety assessment companies based in France
- AI companies based in the United States
- Cybersecurity companies based in the United States
- Manufacturing companies based in the United States
- Media companies based in the United States
- Oil and gas companies based in the United States