Numerical Advisory Solutions
Numerical Advisory Solutions provides proprietary nuclear engineering simulation software (GOTHIC, RETRAN, VIPRE, PROTO-Series, RADTRAD-NAI) and specialized analysis services to electric utilities, advanced reactor designers, regulators, A/E firms, and government agencies worldwide, with 45+ years of domain expertise.
- Company typePrivate
- Founded1979
- HeadquartersCary, United States
- Headcount51–100
- GTM typeB2B
- OfferingSoftware
What Numerical Advisory Solutions does
Numerical Advisory Solutions, LLC (NAS) is a Cary, NC-based specialty software and engineering services firm serving the commercial and governmental nuclear energy sector worldwide. Founded in 1979 and operating today as a subsidiary of Zachry Brands, Inc., the firm provides a portfolio of proprietary nuclear engineering simulation tools — GOTHIC (containment analysis), RETRAN (transient analysis), VIPRE (thermal-hydraulic analysis), the PROTO-Series (engineering simulations), and RADTRAD-NAI (radiological dose assessment) — alongside a Custom Software Development offering for client-specific analysis needs. The product portfolio derives from legacy EPRI and NRC-funded engineering codes that have been commercialized and continuously refined over more than 45 years.
The company monetizes through two complementary streams: software licensing of its proprietary analysis tools and professional engineering analysis services. The analysis services menu spans thermal hydraulics, advanced reactor design support, operating plant support, licensing and regulatory support, systems analysis, radiological assessment, nuclear fuel analysis, and waste management. Customers include electric utilities (nuclear plant operators), advanced reactor designers (next-generation reactor developers), research organizations, nuclear regulatory bodies, Architect/Engineer firms, fuel vendors, and government agencies across global markets. Direct enterprise field sales via website inquiry, user-group communities (RETRAN and VIPRE), and dedicated training and purchasing support are the primary go-to-market mechanisms.
The firm operates with 51-100 employees and uses a two-entity corporate structure: Numerical Advisory Solutions, LLC handles software and analysis contracts nationally, while associated entity Numerical Advisory Solutions Engineering, P.C. — also operating through the Cary, NC location — performs regulated engineering work in NC, MI, IL, and CT to satisfy state board licensing requirements. Limited public financial disclosures are available.
Numerical Advisory Solutions firmographics
Firmographics- Name
- Numerical Advisory Solutions
- Legal name
- Numerical Advisory Solutions, LLC
- Website
- https://numerical.com
- Company type
- Private
- Founded year
- 1979
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- Numerical Advisory Solutions provides proprietary nuclear engineering simulation software (GOTHIC, RETRAN, VIPRE, PROTO-Series, RADTRAD-NAI) and specialized analysis services to electric utilities, advanced reactor designers, regulators, A/E firms, and government agencies worldwide, with 45+ years of domain expertise.
- Ownership category
- akta.pro rank
Numerical Advisory Solutions industry classification
Industry- Product category
- Nuclear Engineering Software
- NAICS
- Engineering Services (541330), Other Scientific and Technical Consulting Services (541690), Computer Systems Design Services (541512)
- SIC
- Services-Engineering Services (8711), Services-Engineering, Accounting, Research, Management (8700)
- akta.pro primary industry
- Reactor Core Design, Neutronics & Thermal-Hydraulics Engineering Tools (EUAKADAD)
- akta.pro secondary industries
- Quality Assurance Programs & Nuclear Quality Standards (ASME NQA-1, ISO 9001, IAEA) (EUAKAEAC), Nuclear Safety, Licensing & Regulatory Compliance (Plant Ops) (EUACADAN), Spent Fuel Management Engineering, Consulting & Digital Tools (Thermal/Shielding/Criticality, QA) (EUAKAHAL), Nuclear Materials Testing, Assay & Characterization Services (NDA/NDE, radiochemistry, materials analysis) (EUAKAIAL)
Keywords
Where Numerical Advisory Solutions is headquartered
LocationHeadquarters
- HQ city
- Cary
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
Numerical Advisory Solutions business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Personnel, Technology or R&D, Operations, Marketing or Sales, Others
Revenue model
- Software Licensing: Licensing of proprietary nuclear engineering software tools including GOTHIC, RETRAN, VIPRE, PROTO-Series, and RADTRAD-NAI for design, analysis, and safety assessment of nuclear facilities
- Engineering Analysis Services: Professional analysis services covering thermal hydraulics, advanced reactors, operating plant support, licensing and regulatory support, systems engineering, radiological assessment, nuclear fuel analysis, and waste management
Go-to-market motion1 record
Distribution channels2 records
Marketing channels3 records
Numerical Advisory Solutions product offering
Product offeringCore offering
Numerical Advisory Solutions provides proprietary nuclear engineering software tools (GOTHIC, RETRAN, VIPRE, PROTO-Series, RADTRAD-NAI) and complementary engineering analysis services for the design, licensing, and safe operation of nuclear facilities. The company delivers thermal hydraulics, advanced reactor, licensing/regulatory, radiological, nuclear fuel, and waste management analysis, along with custom software development for specialized client requirements.
Product overview
Numerical Advisory Solutions provides a portfolio of specialized nuclear engineering software tools and analytical services. The core product suite includes GOTHIC (containment analysis), RETRAN (transient analysis), VIPRE (thermal-hydraulic analysis), PROTO-Series (engineering simulation), and RADTRAD-NAI (radiological assessment), complemented by Custom Software development. Beyond software, the company offers comprehensive engineering analysis services spanning thermal hydraulics, advanced reactors, operating plant support, licensing and regulatory support, systems analysis, radiological assessment, nuclear fuel analysis, and waste management.
Differentiator
Problem solved
Functional benefit
Brands
- GOTHIC: Licensing and simulation software tool
- RETRAN
- VIPRE
- PROTO-Series
- RADTRAD-NAI
- Custom Software
Products and services
- GOTHIC Nuclear island/containment analysis software for the design and safety assessment of nuclear facilities; used by utilities, reactor designers, and regulators for containment performance modeling.
- RETRAN Transient analysis code for nuclear power plant simulation and safety analysis; used for engineering simulation capabilities supporting facility design and operation.
- VIPRE Thermal hydraulics analysis tool for reactor core assessment and safety analysis; used for fuel and facility design evaluations.
- PROTO-Series Series of analysis software tools for nuclear engineering applications covering various simulation needs across reactor and fuel analysis.
- RADTRAD-NAI Radiological assessment and dose calculation software for nuclear facility analysis and safety evaluation.
- Custom Software Development
Companies that use Numerical Advisory Solutions
Customer profileSegments7 records
Ideal customer profiles4 records
Numerical Advisory Solutions technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature6 records
Numerical Advisory Solutions partnerships and signals
Strategic signalScale indicators2 records
Recent moves4 records
Expansion highlights4 records
Numerical Advisory Solutions competitors and assessment
Company assessmentBroad incumbents
- Westinghouse Electric Company: Global nuclear plant OEM and services provider with proprietary safety analysis codes, fuel, and engineering services. Comparable as a nuclear safety analysis code developer and engineering services provider, though Westinghouse is vastly larger and vertically integrated across plant design.
- Holtec International: U.S. nuclear equipment, fuel, and services company serving utilities, government, and spent fuel storage programs. Comparable to NAS in nuclear engineering services and regulatory support, with broader exposure to fuel and storage equipment.
- Framatome: France-based global nuclear services and equipment provider with proprietary safety analysis tools and a broad engineering services portfolio. Comparable to NAS in nuclear safety analysis software and services, but operates at global scale across fuel, services, and instrumentation.
- Curtiss-Wright (Enertech / Nuclear division): Diversified industrial conglomerate with a nuclear engineering services and equipment business serving utilities, naval/defense, and government. Comparable to NAS in nuclear safety/qualification services, but operates at much larger scale across multiple non-nuclear defense and industrial segments.
Direct peers
- Sargent & Lundy: U.S.-based nuclear architect-engineer serving utilities, reactor designers, and government. Directly comparable as a nuclear engineering services firm with deep licensing and design expertise, though larger and more focused on full plant design than software tools.
- Studsvik: Swedish-headquartered nuclear engineering software and services firm serving utilities, regulators, and fuel vendors globally. Highly comparable to NAS in both proprietary analysis codes and engineering services portfolio, with overlapping customer segments in thermal-hydraulics and fuel analysis.
- MPR Associates: U.S. nuclear engineering consulting firm delivering thermal-hydraulics, safety analysis, and licensing services to utilities, reactor designers, and regulators. Comparable to NAS in technical discipline mix and customer base, though MPR is larger and more design-oriented.
- Enercon Services: U.S. nuclear engineering services company providing analysis, licensing support, and safety evaluation to utilities and government agencies. Comparable to NAS's engineering services arm with similar customer segments and regulatory support focus.
Emerging players
- TerraPower: Bill Gates-backed advanced reactor developer (Natrium molten salt reactor) needing qualified thermal-hydraulics, safety, and licensing analysis tools. Comparable to NAS as a customer/user of NAS-style nuclear safety codes rather than a direct competitor; relevant for forward-looking demand.
- X-energy: U.S. advanced reactor developer of the Xe-100 high-temperature gas reactor requiring safety, thermal-hydraulics, and licensing analysis support. Comparable as a buyer of qualified nuclear engineering codes and services that NAS provides, representing an emerging customer rather than a competitor.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
Numerical Advisory Solutions financial estimates
Financial estimateRevenue estimate
Valuation estimate
Numerical Advisory Solutions leadership team
Management profileNumber of profiles
Numerical Advisory Solutions funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Numerical Advisory Solutions M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Numerical Advisory Solutions
What does Numerical Advisory Solutions do?
Numerical Advisory Solutions provides proprietary nuclear engineering software tools (GOTHIC, RETRAN, VIPRE, PROTO-Series, RADTRAD-NAI) and complementary engineering analysis services for the design, licensing, and safe operation of nuclear facilities. The company delivers thermal hydraulics, advanced reactor, licensing/regulatory, radiological, nuclear fuel, and waste management analysis, along with custom software development for specialized client requirements.
Is Numerical Advisory Solutions a public or private company?
Numerical Advisory Solutions is a private company. It is classified as corporate owned and is currently operating.
When was Numerical Advisory Solutions founded?
Numerical Advisory Solutions was founded in 1979. It employs 51 to 100 people.
Where is Numerical Advisory Solutions based?
Numerical Advisory Solutions is headquartered in Cary, United States, in the North America region.
How does Numerical Advisory Solutions make money?
Two revenue lines are on record. Software Licensing is the primary driver. The others are engineering Analysis Services.
Who are Numerical Advisory Solutions's main competitors?
Broad incumbents on record are Westinghouse Electric Company, Holtec International, Framatome and Curtiss-Wright (Enertech / Nuclear division). Direct peers are Sargent & Lundy, Studsvik, MPR Associates and Enercon Services. Emerging players are TerraPower and X-energy.
Does Numerical Advisory Solutions have an API?
No public API is recorded for Numerical Advisory Solutions.
What industry is Numerical Advisory Solutions in?
Numerical Advisory Solutions's product category is Nuclear Engineering Software. Its primary akta.pro industry code is EUAKADAD, Reactor Core Design, Neutronics & Thermal-Hydraulics Engineering Tools, with a secondary code of EUAKAEAC, Quality Assurance Programs & Nuclear Quality Standards (ASME NQA-1, ISO 9001, IAEA). Its NAICS code is 541330 and its SIC code is 8711.