What Structural Integrity Associates does

Structural Integrity Associates, Inc. (SIA) is a US-based engineering and consulting firm, founded in 1985 and headquartered in Huntersville, NC, operating as a subsidiary of SI Solutions, LLC. The firm provides multidisciplinary engineering, advanced nondestructive examination (NDE), fitness-for-service assessments, failure analysis, and operational support services to critical infrastructure operators across power generation, nuclear power, midstream oil & gas pipelines, civil infrastructure, petrochemicals, and renewables. Its work spans the full asset lifecycle for boilers, HRSGs, piping, pressure vessels, turbines and generators, and structures, including metallurgical laboratory services delivered through its Materials Science Center in Austin, TX.

SIA's technology stack combines engineering analysis methods (finite element analysis, fracture mechanics, risk ranking) with proprietary software and inspection hardware. The digital portfolio is built around the AIMS (Asset Integrity Management System) platform and modular products including PlantTrack for damage tracking, MAPPro 4.0 for aging piping, APTITUDE for pipeline flaw evaluation, SIIQ for remote predictive monitoring, Pegasus for nuclear fuel engineering, and FatiguePro for fatigue management. Proprietary inspection technologies include LATITUDE non-mechanized PAUT, Full Matrix Capture Thick-Film Phased Array, SIPEC dynamic pulsed eddy current, the SIIVAS inside-vessel automated scanner, BG5 biofilm detection, and robotic tank inspection vehicles. Certifications include SOC 2 Type 2 and an accredited Nuclear Quality Assurance (NQA) program, and the firm is a key partner of EPRI and an active participant in ASME, ASNT, and PRCI standards development.

The firm generates revenue through three streams: (1) engineering and consulting services billed on multi-year project and retainer engagements; (2) subscription-based digital solutions (AIMS, PlantTrack, SIIQ, MAPPro, APTITUDE, Pegasus, FatiguePro, MVI) deployed across 120+ North American facilities; and (3) equipment certification services through the TRU Compliance sub-brand for seismic, wind, and physical security certifications. Go-to-market is direct enterprise field sales to utility owners, nuclear operators, pipeline operators, and OEMs, supported by technical content marketing, webinars, and industry standards participation.

Name

Structural Integrity Associates

Legal name

Structural Integrity Associates, Inc.

Website

http://structint.com

Company type

Private

Founded year

1983

Operating status

Operating

Headcount range

251–500 employees

Short description

Structural Integrity Associates (SIA) is a US engineering and consulting firm providing asset lifecycle management, advanced nondestructive examination, fitness-for-service assessments, and proprietary digital monitoring software to utility, nuclear, pipeline, and industrial operators across North America.

Ownership category

akta.pro rank

Product category

Engineering Consulting & Asset Integrity Management

NAICS

Engineering Services (541330), Testing Laboratories and Services (541380)

SIC

Services-Engineering Services (8711), Services-Testing Laboratories (8734)

akta.pro primary industry

Asset Integrity, Inspection & Condition-Based Maintenance (CBM/PdM) (EUAEAGAL)

akta.pro secondary industries

Non-Destructive Testing (NDT) & Advanced Inspection (Phased Array, TOFD, Guided Wave) (EUAEAKAF), Performance Testing & Acceptance/Condition Assessments (Baseline, Post-Repair) (EUAEAKAK), Structural & Civil Inspection (Steel, Concrete, Foundations) (EUAEAHAI), Civil & Structural Engineering Consulting (BPAHAIAA)

Keywords

• Engineering consulting services
• Asset integrity management
• Nondestructive examination
• Nuclear engineering services
• Pipeline integrity management

Headquarters

HQ city

Huntersville

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Engineering and Consulting Services: Professional engineering consulting services for critical infrastructure asset lifecycle management, including advanced engineering analysis, nondestructive examination, fitness-for-service assessments, failure analysis, and operational support services. Revenue is generated through project-based engagements and retainer arrangements with utilities and industrial clients.
2. Digital Solutions and Software: Proprietary software platforms including PlantTrack AIMS, MAPPro, SIIQ monitoring solutions, and specialty software tools licensed or deployed to client facilities for asset integrity management.
3. Equipment Certification Services: TRU Compliance subsidiary provides seismic, wind, and physical security certifications for equipment through testing and analysis services.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels7 records

Core offering

Structural Integrity Associates is an engineering and consulting firm that identifies, analyzes, and prevents engineering failures for critical infrastructure assets. It delivers advanced engineering analysis, nondestructive examination (NDE), fitness-for-service and failure analysis, metallurgical laboratory services, and proprietary asset integrity software (AIMS, PlantTrack, MAPPro, SIIQ, APTITUDE, Pegasus) to power generation, nuclear, pipeline, civil infrastructure, petrochemical, and renewable energy operators across North America.

Product overview

Structural Integrity Associates (SIA) is a leading engineering and consulting firm offering an integrated portfolio of asset lifecycle management solutions for critical infrastructure. The company provides a platform-plus-modules architecture combining the AIMS (Asset Integrity Management System) as the core digital platform with specialized software modules including PlantTrack™ for inspection data management, SIIQ™ for remote monitoring, MAPPro™ 4.0 for piping integrity, APTITUDE™ for pipeline flaw evaluation, and FatiguePro Nuclear for fatigue management. SIA's solutions are enhanced by proprietary inspection technologies including LATITUDE™ PAUT encoding, SIPEC™ eddy current inspection, and the SIIVAS automated scanner. The company also operates TRU Compliance for equipment certification and a Materials Science Center for metallurgical analysis. Services span nondestructive examination (NDE), advanced engineering, operational support services, and vibration testing, all integrated to provide comprehensive asset lifecycle management for power generation, nuclear, pipeline, civil infrastructure, and petrochemical industries.

Differentiator

Problem solved

Functional benefit

Brands

• TRU Compliance: Product certification agency of Structural Integrity Associates, recognized leader in Seismic, Wind, & Physical Security certifications.
• PlantTrack
• SIIQ
• MAPPro
• AIMS

Products and services

• AIMS (Asset Integrity Management System) Comprehensive asset integrity management platform providing centralized management tools for critical components, integrating inspection data, operational data, and engineering analyses to support license renewals and lifecycle investment decisions for utilities, nuclear operators, and industrial clients.
• PlantTrack Knowledge and data management system providing real-time damage tracking, inspection data management, and material lifecycle analysis integrated with High Energy Program (HEP) management and PlantTrack-based monitoring solutions.
• APTITUDE Pipeline flaw evaluation software that supports engineering critical assessments by computing predicted failure pressure and fracture mechanics analyses to support MAOP reconfirmation and integrity management for pipeline operators.
• MAPPro 4.0 (Managing Aging Piping Program) Software solution for managing aging piping programs, including underground and buried piping corrosion concerns, integrating program development, data integration, risk ranking, and cathodic protection system assessments for nuclear and industrial facilities.
• SIIQ (Structural Integrity Intelligence Quotient) Remote monitoring technology that pairs connected assets with predictive intelligence, analyzing damaging conditions in plants, monitoring temperature, wall thickness, vibration, biofilm growth, and attemperator performance for predictive maintenance and condition-based strategies.
• Pegasus Nuclear fuel technology software for fuel behavior analysis, fuel reload process, licensing management, and advanced reactor fuel engineering support for nuclear utilities.
• FatiguePro Nuclear Nuclear fatigue management software for assessing and managing fatigue damage in nuclear power plant components, supporting aging management and license renewal programs.
• MVI (Material Verification) Web-based software application that gives pipeline operators a reliable and efficient method to centralize Material Verification program data, track progress, and generate reports to comply with PHMSA regulations.
• TRU Compliance Product certification agency providing seismic, wind, and physical security certifications for critical equipment, recognized as a leader in equipment qualification testing and analysis for nuclear and industrial clients.
• Materials Science Center (MSC) State-of-the-art metallurgical laboratory in Austin, Texas providing comprehensive failure analysis, sample characterization, hardness testing, deposit analysis, weld assessments, and creep damage evaluations to support power, nuclear, and industrial clients.
• Advanced Engineering Advanced engineering consulting spanning computer analysis, design codes, damage mechanism evaluation, and fitness-for-service assessments for boilers, HRSGs, piping, pressure vessels, turbines, generators, and structures.
• Nondestructive Examination (NDE) Nondestructive examination services using advanced techniques including PAUT, Full Matrix Capture, SIPEC pulsed eddy current, SIIVAS automated scanning, BG5 biofilm detection, and HDPE piping inspection for power, nuclear, pipeline, and industrial assets.
• Operational Support Services Operational support services spanning reliability programs, vibration testing, monitoring deployment, and field engineering support for power generation, nuclear, pipeline, and industrial clients.

Quantifiable outcome

• Deployed in over 120 facilities across North America
• +2 more outcomes

Named customers3 records

Segments6 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration1 record

AI capability2 records

Feature12 records

Partnerships

Six partnerships are on record, tiered core.

• Radiological Solutions, Inc.coreStrategic or Co-development Partner · 2 February 2026Acquired by SI Solutions, LLC on February 2, 2026. The acquisition expands nuclear energy capabilities, particularly in plant chemistry and radiological controls, strengthening SIA's position in nuclear chemistry services.
• Electric Power Research Institute (EPRI)coreStrategic or Co-development PartnerSIA is a key partner of EPRI, actively participating in the development of codes and standards. The company engages with EPRI technology demonstration programs and collaborates on industry research initiatives for power generation and nuclear sectors.
• Pipeline Research Council InternationalcoreStrategic or Co-development PartnerSIA actively supports Pipeline Research Council International's research initiatives, including the Hard Spot Project for pipeline integrity. The company participates in joint industry projects to develop and validate pipeline flaw evaluation software and assessment methodologies.
• ASME (American Society of Mechanical Engineers)coreStrategic or Co-development PartnerSIA subject matter experts are actively involved with ASME Code Participation and Leadership, contributing to the development and implementation of codes and standards including ASME BPVC, B31.1, and Section VIII Divisions 1-3.
• ASNT (American Society for Nondestructive Testing)coreStrategic or Co-development PartnerSIA's NDE team is actively engaged in ASNT, helping to develop the codes, standards, and best practices that guide the application of NDE around the world.
• EPRI Performance Demonstration Initiative (PDI)coreStrategic or Co-development PartnerSIA's NDE team holds multiple qualifications within the EPRI PDI program, demonstrating compliance with performance demonstration requirements for nondestructive examination in the nuclear industry.

Scale indicators4 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Bureau Veritas: Global TIC firm with deep energy and infrastructure verticals including power generation, nuclear, and pipeline integrity. Competes with SIA in asset integrity and certification but operates a much broader portfolio.
• Intertek: Global TIC and quality assurance provider covering energy, industrial, and infrastructure end markets. Overlaps with SIA's materials testing, NDE, and certification work for power and pipeline clients.
• TÜV SÜD: Global TIC and certification organization with significant nuclear, energy, and industrial infrastructure practice. Comparable to SIA's regulatory expertise but with much broader geographic and service coverage.
• Wood Group (Wood): Global engineering and consulting firm with significant energy, power, and process industry practices including asset integrity and reliability services. Competes with SIA in asset lifecycle management for energy clients at larger scale.
• SGS: World's largest TIC company, covering oil & gas, power, infrastructure, and industrial asset integrity. Competes with SIA in NDE and asset integrity, though from a much larger generalist platform.
• Applus+: Global testing, inspection, and certification (TIC) provider serving energy, infrastructure, and industrial markets. Overlaps with SIA's NDE and asset integrity services but at much larger scale and broader geographic footprint.

Direct peers

• Jensen Hughes: Engineering and consulting firm specializing in safety, security, and risk-based engineering for critical infrastructure including power, nuclear, and industrial facilities. Comparable multidisciplinary engineering services model to SIA.
• Stress Engineering Services: Independent engineering consulting firm providing failure analysis, fitness-for-service, materials testing, and NDE for energy, petrochemical, and pipeline clients. Direct overlap with SIA's advanced engineering and metallurgical lab offerings.
• Mistras Group: Provider of non-destructive testing, asset integrity, and mechanical services to energy, oil & gas, and infrastructure end markets. Closest publicly traded peer to SIA's NDE + asset integrity platform with similar customer base.

Emerging players

• Curtiss-Wright (Defense & Nuclear): Provides specialized nuclear engineering services and reactor instrumentation; overlaps with SIA's nuclear fuel and structural integrity work for power plant operators, particularly in advanced reactor and life-extension contexts.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UChu8bpmXOmNZD2xqg609kvA
• Facebookfacebook.com/structuralintegrityassociates
• LinkedInlinkedin.com/company/structural-integrity-associates

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries1 record

Funding overview

Funding rounds

Investors

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

M&A1 record

Investments

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

Frequently asked questions about Structural Integrity Associates