Company lists · Data refreshed September 2026

Top 22 Reactor safety analysis software companies based in the United States

RevenueBase identified 57 company matches for reactor safety analysis software companies associated with the United States as of September 2026 and tracks 1,133 professional contacts across them, including 371 with verified work emails and 506 with mobile numbers. Idaho Falls is the largest hub.

This list covers company matches for reactor safety analysis software 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 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 5, 2026 How this list was built
57Companies
1,133Contacts tracked
371Verified emails
506Mobile numbers
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The 22 largest reactor safety analysis software companies based in the United States

Ranked by team size
Top 22 of 57 company matches for reactor safety analysis software companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 5, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchColumbia, MD, United StatesHQ recorded Sep 5, 2026201-500404 contacts →

Exact match

“GSE Solutions supports nuclear power and clean-energy fleets worldwide through integrated engineering services and software that strengthen operational performance.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
2Exact matchBurr Ridge, IL, United StatesHQ recorded Sep 5, 202651-20060 contacts →

Exact match

“Fauske & Associates (FAI) is a world leader in nuclear, industrial and chemical process safety.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
3Exact matchKnoxville, TN, United StatesHQ recorded Sep 5, 202651-20042 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 5, 2026 · View company records in RevenueBase
4Exact matchLatrobe, PA, United StatesHQ recorded Sep 5, 2026201-50038 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 5, 2026 · View company records in RevenueBase
5Exact matchOak Ridge, TN, United StatesHQ recorded Sep 5, 202651-20036 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 5, 2026 · View company records in RevenueBase
6Exact matchPeekskill, NY, United StatesHQ recorded Sep 5, 202611-5033 contacts →

Exact match

“Founded in 1979 and now an EnergySolutions company, WMG, Inc.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
7Exact matchIdaho Falls, United StatesHQ recorded Sep 5, 202651-20032 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 5, 2026 · View company records in RevenueBase
8Exact matchPhoenix, AZ, United StatesHQ recorded Sep 5, 202611-5023 contacts →

Exact match

“With over 60 reactors around the world relying on our technology, Nuclearn is built on one simple idea: nuclear deserves better tools.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
9Exact matchMoon Township, PA, United StatesHQ recorded Sep 5, 2026201-50014 contacts →

Exact match

“PKMJ is an organization of experienced personnel dedicated to supporting the Nuclear Power Industry.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
10Exact matchFramingham, MA, United StatesHQ recorded Sep 5, 202651-20012 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 5, 2026 · View company records in RevenueBase
11Exact matchPittsburgh, PA, United StatesHQ recorded Sep 5, 20261-1011 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 5, 2026 · View company records in RevenueBase
12Exact matchSt. Louis, MO, United StatesHQ recorded Sep 5, 202611-5011 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 5, 2026 · View company records in RevenueBase
13Exact matchLenoir City, TN, United StatesHQ recorded Sep 5, 20261-108 contacts →

Exact match

“Veracity Nuclear brings game-changing technology to bear on problems that remain unsolved by traditional modeling and simulation used by the nuclear industry.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
14Exact matchRockdale, IL, United StatesHQ recorded Sep 5, 20261-107 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 5, 2026 · View company records in RevenueBase
15Exact matchHouston, TX, United StatesHQ recorded Sep 5, 20261-106 contacts →

Exact match

“SciRisq, formerly named Analytical & Computational Energetics (ACE), specializes in the development and implementation of risk and consequence analysis software.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
16Exact matchLynchburg, VA, United StatesHQ recorded Sep 5, 20261-105 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
17Exact matchBoston, United StatesHQ recorded Sep 5, 20261-104 contacts →

Exact match

“Insight Numerics is dedicated to building the most advanced, visually intuitive software for safety analysis in the oil and gas industry.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
18Exact matchGaithersburg, MD, United StatesHQ recorded Sep 5, 20261-104 contacts →

Exact match

“EMPC created, develops, and licenses the NOVICE Software Suite.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
19Exact matchDowners Grove, United StatesHQ recorded Sep 5, 20261-103 contacts →

Exact match

“Inservice Engineering is celebrating its 20th year of providing quality engineering services to the nuclear industry!”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
20Exact matchCape Canaveral, FL, United StatesHQ recorded Sep 5, 20261-102 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 5, 2026 · View company records in RevenueBase
21Exact matchCharlotte, NC, United StatesHQ recorded Sep 5, 20261-102 contacts →

Exact match

“Provides engineering services to nuclear utilities and related industries.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
22Exact matchTacoma, WA, United StatesHQ recorded Sep 5, 20261-101 contacts →

Exact match

“Welcome to Professionals in Nuclear Consulting Engineering and Research (PINCER).”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase

Showing 22 of 57 reactor safety analysis software companies based in the United States

See the full list, filter by size, metro and specialty, and access 371 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Reactor safety analysis software companies based in the United States at a glance

As of Sep 5, 2026
32.7%Verified-email coverage
44.7%Mobile-number coverage
19.9Average contacts per company
1-10Median size (employees)
7.0%Largest-city concentration · Idaho Falls
Sep 5, 2026Page data refreshed

Companies by employee count

1-10
32
11-50
10
51-200
11
201-500
3

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

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 analysis software 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 371 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 5, 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 analysis software companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many reactor safety analysis software companies are there based in the United States?

RevenueBase identified 57 company matches for reactor safety analysis software 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?

GSE Solutions tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most reactor safety analysis software companies?

Idaho Falls leads with 4 company records, followed by Gaithersburg (3) and St. Louis (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 371 professional contacts with verified work emails tracked across these 57 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 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.