What Radiological Solutions does

Radiological Solutions Inc. (RSI), founded in 2004 and headquartered in Rockdale, Illinois, is a specialized nuclear engineering firm serving commercial nuclear power utilities worldwide. The company designs and manufactures proprietary sampling and chemical injection equipment — including the Corrosion Product Sampler, Fuel Deposit Sampler, Slurry Sampler, Chemical Injection Systems, Metered Precoat System, and Phoenix Flow Totalizer — engineered for 24/7 operation in nuclear environments. RSI also develops and licenses process technologies such as the patented Online Fuel Inspection Method, the EPRI-developed Stabilized Chromium Process (SCrP) for radiation dose reduction, and the Advanced Resin Cleaning System (ARCS) for ion exchange resin maintenance. A secondary office address is maintained in Huntersville, North Carolina.

RSI generates revenue through four streams: (1) one-time sale of custom-manufactured sampling and chemical injection equipment; (2) engineering consulting services spanning gamma scanning, water treatment optimization, radiation protection, noble metals sampling, online fuel inspections, and outage chemistry support; (3) structured training courses in radiochemistry and ODCM, priced at $2,600 per student; and (4) licensing of proprietary processes such as SCrP and ARCS. The go-to-market is direct enterprise field sales into utility engineering and operations teams, with no reseller or distributor network. Customers include TVA, Exelon, Arizona Public Service, Dominion Energy, Southern Nuclear, Duke Energy, Florida Power & Light, Entergy, Pacific Gas & Electric, Ontario Power Generation, Taiwan Power, and the U.S. Department of Energy. RSI obtained ISO 9001:2015 certification in September 2025 and was acquired by SI Solutions, LLC (through Structural Integrity Associates, Inc.) in February 2026.

Name

Radiological Solutions

Legal name

Radiological Solutions Inc.

Website

http://www.radiologicalsolutions.com

Company type

Private

Founded year

2004

Operating status

Acquired

Headcount range

1–10 employees

Short description

Radiological Solutions Inc. is a Rockdale, Illinois-based nuclear engineering firm founded in 2004 that designs proprietary sampling and chemical injection equipment and provides water treatment, radiation protection, and chemistry consulting services to commercial nuclear power utilities operating BWR and PWR reactors worldwide.

Ownership category

akta.pro rank

Product category

Nuclear Engineering Services

NAICS

Testing Laboratories and Services (54138), Analytical Laboratory Instrument Manufacturing (334516)

SIC

Services-Testing Laboratories (8734), Industrial Instruments For Measurement, Display, And Control (3823), Services-Commercial Physical & Biological Research (8731)

akta.pro primary industry

Chemistry, Water Treatment & Radiochemistry (Primary/Secondary Chemistry, Sampling) (EUAKABAG)

akta.pro secondary industry

Nuclear Materials Testing, Assay & Characterization Services (NDA/NDE, radiochemistry, materials analysis) (EUAKAIAL)

Keywords

• Nuclear power services
• Radiological engineering
• Water treatment systems
• Radiation protection consulting
• Chemical injection equipment

Headquarters

HQ city

Rockdale

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Supply Chain, Marketing or Sales, Infrastructure

Revenue model

1. Specialized Equipment Sales: Sale of nuclear plant sampling equipment, chemical injection systems, corrosion product samplers, and related instrumentation. Equipment is custom-manufactured to plant specifications and designed for 24/7 operation in nuclear environments.
2. Engineering Consulting Services: Technical consulting services including water chemistry optimization, radiation protection consulting, gamma scanning, operational support for nuclear facilities, and outage/operational chemistry support.
3. Training Courses: Classroom and hands-on training courses for nuclear plant chemistry and radiation protection personnel. Course offerings include radiochemistry fundamentals and Offsite Dose Calculation Manual (ODCM) programs.
4. Technology Licensing and Process Equipment: Licensing of proprietary processes such as the Stabilized Chromium Process and Advanced Resin Cleaning System for deployment at nuclear facilities.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Radiological Solutions provides specialized engineering services and custom-manufactured equipment for nuclear power utilities, focused on plant chemistry optimization, radiological dose control, and chemical/feed system design. The company sells proprietary sampling and chemical injection equipment, deploys licensed process technologies such as the Stabilized Chromium Process and Advanced Resin Cleaning System, and delivers field services including gamma scanning, water treatment, radiation protection consulting, online fuel inspection, and noble metals sampling for both BWR and PWR facilities.

Product overview

Radiological Solutions (RSI) offers a comprehensive portfolio of specialized nuclear engineering products and technologies for the power generation industry. The company's core product line centers on precision sampling equipment including the Corrosion Product Sampler, Fuel Deposit Sampler, Slurry Sampler, and Phoenix Flow Totalizer™. These sampling systems are complemented by chemical injection solutions for precise delivery of dispersants, zinc acetate, and hydrazine. RSI also provides advanced process technologies including the Stabilized Chromium Process for radiation dose reduction and the Advanced Resin Cleaning System (ARCS). Services encompass gamma scanning, water treatment optimization, radiation protection consulting, online fuel inspection, noble metals sampling, pilot plant testing, and media testing. The company serves both BWR and PWR nuclear facilities with a focus on helping utilities reduce radioactive waste, control occupational exposure, and maintain optimal plant chemistry.

Differentiator

Problem solved

Functional benefit

Brands

• Modified Precoat Process (MPP): A mechanical system for applying precoat slurry to filter/demineralizer septa at a constant lower concentration over longer periods, producing more uniform precoat with less potential for cracking.

Products and services

• Corrosion Product Sampler Industry benchmark sampler for accurate, integrated collection of soluble and insoluble corrosion product species from nuclear power plant streams; features positive liquid displacement sample holder, electronic flow measurement, minimum overall size, and requires no external power for normal operation. Used by plant chemistry and radiation protection personnel at BWR and PWR nuclear utilities.
• Phoenix Flow Totalizer Like-for-like replacement flow totalizer for non-functioning drip meter flow totalizers, retrofit with state-of-the-art components and a digital display toggleable between total flow in liters and flow rate in mL/min. Targeted at nuclear plant flow monitoring retrofits.
• Fuel Deposit Sampler State-of-the-art equipment for sampling corrosion product deposits on nuclear fuel assemblies, featuring automated sample line flush, single motion sample removal, remote control for minimum operator exposure, and microprocessor-controlled sample collection. Used at nuclear power plants to characterize fuel deposits and support chemistry programs.
• Chemical Injection Systems Precision chemical injection skids custom designed per customer specifications to meter exact amounts of nuclear plant chemicals including depleted zinc acetate for radiation dose control and polyacrylic acid dispersant for corrosion product suspension, with injection rates from 0.1 to 20 ml/min and delivery pressure up to 6000 psig. Deployed at BWR and PWR nuclear power plants.
• Continuous Gas Partitioner Portable accessory for helium mass spectrometer leak detectors that enables rapid underwater detection of dissolved gases for condenser performance evaluation, with operating pressure range of 50 to 100 psig. Targeted at nuclear power plant chemistry and maintenance teams.
• Slurry Sampler System for collecting representative samples of two-phase solid/liquid material flowing in process piping, featuring a microprocessor-based controller and remote sampling module allowing remote operation up to 250 feet from the sampling point to reduce operator radiation exposure. Used in nuclear plant process sampling.
• Metered Precoat System (Modified Precoat Process) Mechanical system enabling precision application of precoat slurry to filter/demineralizer septa at a constant lower concentration over an extended period, producing more uniform precoat with less cracking potential; extends filter run lengths, reduces radioactive waste volume, and improves water quality. Deployed at nuclear plant RWCU and condensate filter/demineralizer systems.
• Standardized Smear Sampler Tool designed to collect consistent and reproducible smear samples for correlating smear data to radiation protection metrics in nuclear plant radiological control programs.
• Stabilized Chromium Process (SCrP) deployment Licensed EPRI-developed surface pretreatment process involving electropolishing, chromium application, and controlled heat-up/oxidation to create a protective oxide coating that reduces activity buildup on primary system components by factors of 10 to 200. Deployed by RSI at nuclear power plants to reduce occupational radiation exposure.
• Advanced Resin Cleaning System (ARCS) deployment Service-based deployment for routine cleaning of condensate ion exchange resins at electric power generation stations, achieving dramatic reduction in feedwater insoluble iron, generating less than 30 gallons of wastewater per cubic foot of resin cleaned, and extending usable resin life.
• Gamma Scanning Service Field engineering service providing gamma scanning of nuclear plant components and systems to characterize activity transport, deposits, and shielding performance; delivered by RSI technical staff at nuclear utility sites.
• Water Treatment Service Specialized engineering and consulting service for nuclear power plants covering water treatment program design, optimization, and operational chemistry support for BWRs and PWRs.
• Radiation Protection Consulting Service Radiation protection consulting delivered to nuclear power plants, including dose-rate assessment, ALARA program support, and integration with proprietary sampling and chemistry technologies to reduce occupational radiation exposure.
• Online Fuel Inspection Service Service offering anchored by RSI's patented Online Fuel Inspection Method, using control rod manipulation and gamma spectroscopy to detect and locate fuel rod leaks in boiling water reactors while the plant continues to operate online, avoiding costly unplanned shutdowns.
• Noble Metals Sampling Service BWRVIP noble metals sampling services including fuel channel clips, core shroud, and surveillance capsules, supporting BWRVIP compliance and inspection relief for boiling water reactor operators.
• Pilot Plant Service Pilot plant testing service for nuclear plant chemistry and water treatment applications, allowing utilities to evaluate process and chemistry changes at sub-scale before full deployment.
• Media Testing Service Media testing service supporting nuclear plant ion exchange and filtration programs, characterizing resin and filter media performance for chemistry and dose-rate optimization.
• Nuclear Plant Chemistry and Radiation Protection Training Courses Classroom and hands-on training courses for nuclear plant chemistry and radiation protection personnel, including the one-week Radiochemistry and Gamma Spec Fundamentals course and the one-week Offsite Dose Calculation Manual (ODCM) course; priced at $2,600 per student and held at customer plant sites such as Florida Power & Light's St. Lucie Plant.

Quantifiable outcome

• Radiation dose rate reduction factors of 10 to 200 through Stabilized Chromium Process
• +5 more outcomes

Named customers14 records

Segments2 records

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Partnerships

One partnership is on record.

• SI Solutions, LLC / Structural Integrity Associates, Inc. (SIA)coreStrategic or Co-development Partner · 2 February 2026SI Solutions, LLC, through its advanced engineering division Structural Integrity Associates, Inc., acquired Radiological Solutions, Inc. The acquisition combines RSI's expertise in chemistry, environmental, and innovative process equipment with SIA's established asset lifecycle and engineering services platform, creating a comprehensive offering for the global nuclear power industry.

Scale indicators2 records

Recent moves5 records

Expansion highlights5 records

Others

• EPRI (Electric Power Research Institute): Industry-funded R&D organization that develops and licenses nuclear chemistry and materials technologies including the Stabilized Chromium Process that RSI deploys and licenses. Comparable as the originating research/technology partner rather than a competing vendor, defining the technology roadmap RSI commercializes.

Direct peers

• Studsvik: Swedish-headquartered nuclear services firm providing fuel services, chemistry optimization, and decommissioning engineering to commercial nuclear operators globally. Closely comparable in chemistry, fuel inspection, and materials services focused on BWR/PWR fleets, with international customers and proprietary operating know-how.

Broad incumbents

• EnergySolutions: US-based nuclear services and D&D firm providing operations, decontamination, decommissioning, and waste-management services to commercial and government nuclear customers. Comparable as a services peer addressing similar utility and government customers with adjacent (chemistry/radiological) capabilities.
• Holtec International: Nuclear equipment, fuel, and services firm providing spent-fuel storage, transport, and selected plant services including chemistry and inspection-related work for operating US reactors. Comparable as a broad nuclear services incumbent with overlap in plant chemistry and radiological services domains.
• Westinghouse Electric Company: Major nuclear OEM providing fuel, services, and plant support including chemistry and outage services for PWR/BWR operators worldwide. Comparable as a global incumbent with overlapping fuel, chemistry, and outage-adjacent offerings and substantially larger installed-base reach than RSI.
• Mirion Technologies: Publicly traded provider of radiation detection, measurement, and monitoring instrumentation for nuclear, medical, and defense markets. Overlaps with RSI's sampling and radiation protection instrumentation footprint but operates at significantly broader scale across nuclear and adjacent verticals.
• BWX Technologies (BWXT): Supplier of nuclear components, fuel, and advanced engineering services for naval, government, and commercial nuclear markets. Comparable as a broad nuclear-services incumbent serving government and commercial customers where radiological control and specialized engineering are core competencies.
• Framatome: Global nuclear reactor vendor and services firm offering fuel, components, and a broad portfolio of plant services including chemistry, inspections, and outage support for PWR and BWR operators. Comparable as a broad-incumbent commercial rival in chemistry, fuel services, and radiological engineering.
• Structural Integrity Associates (SIA): Parent operating division of SI Solutions that acquired RSI; provides engineering, asset integrity, and life-cycle services to the nuclear and broader energy industries. Operates 14 offices globally and employs 600 professionals, offering a much broader service portfolio than RSI's chemistry/radiology specialty while directly integrating RSI's offerings.
• Curiss-Wright (Nuclear Operations): Operates a large nuclear services business including specialty chemistry, decontamination, D&D, and engineered products for commercial and government nuclear customers. Comparable as an established equipment-and-services incumbent serving similar BWR/PWR utilities with overlapping chemistry and radiological offerings.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/radiological-solutions

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Radiological Solutions