Company lists · Data refreshed September 2026
Top 25 Nuclear security consultants based in the United States
RevenueBase identified 85 nuclear security consultants headquartered in the United States as of September 2026 and tracks 1,888 professional contacts across them, including 316 with verified work emails and 932 with mobile numbers. Albuquerque is the largest hub.
This list covers nuclear security consultants headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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 nuclear security consultants based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | Sonic SystemsPartial evidence | 245 | |||
“Founded in 1977 Sonic Systems International (SSI) is a full-service quality-consulting firm serving the nuclear power generation utility industry.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 2 | Strategic Management Solutions, LLC SmsiIndirect evidence | 188 | |||
“SMSI is a small business providing management and technical/engineering services to the DOE/NNSA, national laboratories, and industrial clients.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 3 | 118 | ||||
“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.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | NAC InternationalPartial evidence | 116 | |||
“NAC International Inc.(NAC) is an industry-leading provider of engineering, consulting, and nuclear fuel management solutions for nuclear facility operators, fuel cycle companies…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | HukariascendentPartial evidence | 104 | |||
“HukariAscendent is a technical consulting and engineering company specializing in comprehensive engineering and technical services associated with the nuclear industry and power…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 6 | Fauske & AssociatesPartial evidence | 60 | |||
“Fauske & Associates (FAI) is a world leader in nuclear, industrial and chemical process safety.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | Golden Security ServicesPartial evidence | 59 | |||
“Golden Security Services stands at the forefront of safeguarding radioactive sources throughout their entire lifecycle, blending personalized security solutions with strict…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | 47 | ||||
“EXCEL has evolved over the last four decades to meet the needs of the nuclear energy industry.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | Sigma Science, INCIndirect evidence | 46 | |||
“Sigma Science is now part of the RSI Group.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | 42 | ||||
“Analysis and Measurement Services Corporation (AMS) is a nuclear engineering consulting firm and recognized market leader in providing the worldwide nuclear power industry with…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | Paschal Solutions, INCPartial evidence | 36 | |||
“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…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | 29 | ||||
“At Cyber Realm Solutions, we provide the expertise needed to support every stage of cybersecurity initiatives across nuclear, utility, and critical infrastructure environments.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | Safeguards Technology LLCPartial evidence | 25 | |||
“Safeguards Technology is dedicated to excellence in the area of security consulting, security system design and engineering, installation and commissioning of advanced security…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 14 | Link Technologies, INCIndirect evidence | 23 | |||
“Established in 1994, Link Technologies, Inc.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 15 | 20 | ||||
“INNOVATIVE TECHNOLOGY PARTNERSHIPS LLC (ITP) conducts consulting for High Reliability Organizations (HROs) in the nuclear community.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 16 | Pkmj Technical Services, INCPartial evidence | 14 | |||
“PKMJ is an organization of experienced personnel dedicated to supporting the Nuclear Power Industry.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 17 | Engineering Planning And Management, INCPartial evidence | 12 | |||
“EPM is a multi-discipline engineering company that provides cost-effective solutions for safe and reliable operation of nuclear power plants.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 18 | 11 | ||||
“EC2 was formed as an Arizona company in June 2014.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 19 | Trivis INCIndirect evidence | 10 | |||
“Our Company TriVis Inc.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 20 | Independent Strategic Management Solutions, INCIndirect evidence | 8 | |||
Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 21 | Radiological Solutions INCPartial evidence | 7 | |||
“Radiological Solutions (RSI) is a nuclear engineering and consulting firm specializing in water chemistry optimization, radiological dose management, gamma scanning, and…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 22 | 7 | ||||
“ARS is a growing, international, and multi-disciplinary company with a strong and diverse client base.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 23 | 6 | ||||
“Environmental Restoration Group, Inc.(ERG) was incorporated in New Mexico in 1991 to provide consulting services to the nuclear industry.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 24 | 6 | ||||
“EXITECH Corporation has over 25 years of experience in domestic and international nuclear communities and provides services in several critical infrastructure sectors; Energy, DOD…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 25 | Partnership For Global SecurityStrong evidence | 6 | |||
“The Partnership for Global Security (PGS) is a recognized international leader and innovator in the nuclear and transnational security policy area.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 85 nuclear security consultants based in the United States
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Nuclear security consultants based in the United States at a glance
As of Sep 5, 2026Companies by employee count
Verified emails by last verification
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among nuclear security consultants, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.
- 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
- Companies headquartered in the United States whose own description of what they do matches “nuclear security consultants”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among nuclear security consultants, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- 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 listed company carries at least one verified work email, 316 across the full list. 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 5, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
How many nuclear security consultants are there based in the United States?
RevenueBase identified 85 nuclear security consultants headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Sonic Systems, headquartered in Wilmington, tops this list with the largest team on record.
Which city has the most nuclear security consultants?
Albuquerque leads with 4 headquartered companies, followed by Rockville (3) and Cedar Rapids (2).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 316 verified decision-maker contacts tracked across these 85 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 5, 2026.
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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.
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