Company lists · Data refreshed September 2026
Top 25 Radiological emergency response consultancies worldwide
RevenueBase identified 1,536 radiological emergency response consultancies worldwide as of September 2026 and tracks 16,959 professional contacts across them, including 5,250 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.
This list covers radiological emergency response consultancies worldwide, 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 29, 2026. Country and city lists for radiological emergency response consultancies follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 radiological emergency response consultancies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,175 contacts → | ||||
Indirect evidence “IEM is a professional services firm dedicated to building a safe, secure, and resilient world.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 878 contacts → | ||||
Partial evidence “IRSN – Institute for Radiological Protection and Nuclear Safety – is the French national public expert in nuclear and radiological risks.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 472 contacts → | ||||
Partial evidence “For over twenty years, Hagerty Consulting has supported clients in preparing for, responding to, and recovering from some of the nation’s largest and most complex disasters.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 336 contacts → | ||||
Partial evidence “CTEH, LLC's purpose is preparing for and responding to a company's or community’s worst day.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 296 contacts → | ||||
Indirect evidence “Expert in risk prevention in the nuclear environment, the CERAP Group brings together through its various entities a range of expertise contributing to the protection of people…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 233 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 201 contacts → | ||||
Indirect evidence “A EnvironPact Sustentabilidade e Resiliência é parte da OceanPact, uma companhia 100% brasileira que desenvolve e implanta soluções seguras, eficientes e inovadoras nas áreas de…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 201 contacts → | ||||
Indirect evidence “Cuidamos la Vida, el medio ambiente y la continuidad de tu negocio, con esta promesa de valor, Sacs Group fundada en el 2001 se ha convertido en la compañía líder del mercado en…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 200 contacts → | ||||
Strong evidence “Thompson Consulting Services is a full service emergency response, disaster recovery and grant management consultancy.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 191 contacts → | ||||
Indirect evidence “LANDAUER offers a comprehensive spectrum of radiation monitoring and consulting solutions, tailored to your specific needs, to significantly reduce the burden of compliance and…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 162 contacts → | ||||
Indirect evidence “We're not just service providers; we're your long-term partners in creating a sustainable, compliant, and efficient future for your assets.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 162 contacts → | ||||
Indirect evidence “Spectra Tech is an engineering, environmental, and nuclear services company that focuses on providing high quality and cost-effective technical solutions for our Federal…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 160 contacts → | ||||
Indirect evidence “At Fire & Safety Australia (FSA), we are driven by a singular purpose: to forever change safety in the world, one experience at a time.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 148 contacts → | ||||
Partial evidence “AC Disaster Consulting offers emergency management advisory and consulting services for private entities; non-profit organizations; and federal, state, local, and tribal…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 139 contacts → | ||||
Indirect evidence “RSCS, now a division of Allied Power, offers expertise in all aspects of radiation safety and radiation measurement applications.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 133 contacts → | ||||
Strong evidence “The Response Group is dedicated to delivering superior products and services to the Emergency Response Community.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 122 contacts → | ||||
Partial evidence “Previnsa nace en como consultora de emergencias, buscando dar respuesta a las necesidades existentes en materia de autoprotección.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 114 contacts → | ||||
Indirect evidence “INTECNUS es una institución destinada a realizar tareas de investigación, desarrollo e innovación, docencia y divulgación en las especialidades de Medicina Nuclear, Radiofarmacia…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 107 contacts → | ||||
Indirect evidence “ASCND accompagne les acteurs de la santé et de l’industrie dans leurs enjeux de sécurité, qualité et performance.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 106 contacts → | ||||
Strong evidence “Blake Emergency Services is a privately owned, UK-based, discreet organisation with over 40 years of international experience and expertise in emergency preparedness, response…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 103 contacts → | ||||
Indirect evidence “Líder em gestão de crises e resposta a emergências, a Ambipar é especializada na resposta a emergências ambientais, atendendo a todos os cenários (rodoviário, ferroviário…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 93 contacts → | ||||
Indirect evidence “Banda Group International (BGI), LLC is a world class technical and project management support services company serving government and private sector clients around the globe.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 88 contacts → | ||||
Partial evidence “CHEMTREC® is the definitive information resource and solutions provider for hazardous materials and dangerous goods response.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 87 contacts → | ||||
Indirect evidence “RDC has provided world-class radiation monitoring since 1949.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 87 contacts → | ||||
Partial evidence “ResQ is a complete provider of services and competence within the area of safety and emergency preparedness.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: radiological emergency response consultancies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names radiological emergency response consultancies.
- Partial evidence
- Its own public description names part of radiological emergency response consultancies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name radiological emergency response consultancies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 1,536 radiological emergency response consultancies worldwide
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Radiological emergency response consultancies worldwide at a glance
As of Sep 29, 2026Companies by employee count
Email recency is reported on each country list linked below.
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 radiological emergency response consultancies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search 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 Smart Search, the natural-language company search available to every RevenueBase user.
- Coverage
- Every country. Country and city lists for radiological emergency response consultancies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “radiological emergency response consultancies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names radiological emergency response consultancies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among radiological emergency response consultancies, and records with no verified work email.
- 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 its RevenueBase Smart Search 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, 5,250 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 29, 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.
Radiological emergency response consultancies by location
9 lists · largest firstEvery Radiological emergency response consultancies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Radiological emergency response consultancies based in the United States398
- Radiological emergency response consultancies based in Brazil112
- Radiological emergency response consultancies based in France97
- Radiological emergency response consultancies based in the United Kingdom71
- Radiological emergency response consultancies based in Australia64
- Radiological emergency response consultancies based in Canada62
- Radiological emergency response consultancies based in Germany56
- Radiological emergency response consultancies based in the Netherlands48
- Radiological emergency response consultancies based in Italy39
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names radiological emergency response consultancies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many radiological emergency response consultancies are there worldwide?
RevenueBase identified 1,536 radiological emergency response consultancies worldwide 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?
IEM, headquartered in Morrisville, tops this list with the largest team on record.
Which country has the most radiological emergency response consultancies?
The United States leads with 398 companies, followed by Brazil (112) and France (97). Every radiological emergency response consultancies list by country and city is linked on this page.
Which city has the most radiological emergency response consultancies?
Sao Paulo leads with 25 headquartered companies, followed by Atlanta (10) and Houston (10).
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 5,250 verified decision-maker contacts tracked across these 1,536 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 29, 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 Smart Search, 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.