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Deep Spectrum Inspection Services Ltd
Expert Level III non-destructive testing consulting, training, and audits. We serve oil and gas, aerospace, and manufacturing clients worldwide. Founded in Europe, with a strong U.S. presence, we bring 4+ years of operations and 17+ years of combined experience to every job.

ABOUT US
DEEP SPECTRUM INSPECTION SERVICES LTD
Deep Spectrum Inspection Services Ltd provides expert Level III Non-Destructive Testing (NDT) consulting, training, auditing, and inspection services for oil and gas, aerospace, marine, petrochemical, power generation, and manufacturing industries. Founded in Europe with roots in Germany and a strong presence in the United States, we deliver dependable inspection solutions backed by technical skill, industry knowledge, and fast response times.
History & Background
Built on technical excellence and hands-on field experience, Deep Spectrum Inspection Services Ltd was created to help organizations improve inspection quality, meet requirements, and reduce risk. Our team brings international experience and responsive support to complex industrial settings.
Services
We provide Level III consulting, procedure development, training, and auditing services, along with a full range of NDT methods:
  • UT — Ultrasonic Testing
  • MPI — Magnetic Particle Inspection
  • DPI — Dye Penetrant Inspection
  • PMI — Positive Material Identification
  • Hardness Testing
  • Thickness Testing
  • Ferrite Inspection
Radiography | Ultrasonic Testing | PMI | RAD | MPI | DPI | Hardness Testing | Ferrite Inspection
Industries Served
  • Oil and gas
  • Aerospace
  • Marine
  • Petrochemical
  • Power generation
  • Manufacturing
Client Trust
Trusted by industry leaders including Shell, BP, ExxonMobil, Chevron, TotalEnergies, Siemens, GE, Rolls-Royce, BAE Systems, Fluor, Bechtel, Laing Construction, and the Ministry of Defense.
“Our services support strong quality systems, lower risk, and better performance in critical industries.”
Compliance
Our services follow recognized quality standards and industry codes to support consistent, auditable, and reliable inspection results.
United States
Serving clients across the United States with responsive support for on-site and remote inspection needs.
Tomas Berrios, BSc, MSc - President & CEO
Tomas Berrios is the President and CEO of Deep Spectrum Inspection Services Ltd. He has more than 17 years of international experience in non-destructive testing (NDT). He brings strong technical knowledge and a focus on safety, quality, and accuracy.
He began his career in Europe and worked across several industries before expanding into the United States. His global background helps him deliver consistent, reliable inspection services and adapt to different rules and client needs.
Tomas works with a wide range of NDT methods, including radiographic testing, ultrasonic testing, magnetic particle inspection, and dye penetrant testing. His work supports key industries such as oil and gas, construction, engineering, and energy, where early defect detection is vital for safe operations.
He has led projects of many sizes and levels of complexity, from routine inspections to demanding high-risk work. He is known for his careful approach and strong attention to detail.
A major part of his role is working on international contracts and project bids. This often involves travel around the world. This experience has helped him work well in different settings while staying efficient, compliant, and focused on quality.
As President and CEO, Tomas is committed to long-term client relationships, strong standards, and steady improvement. His leadership helps ensure each project is handled with professionalism, accuracy, and care.
What We Do
At Deep Spectrum, we help keep critical assets safe, strong, and running well. We use proven NDT methods and deep experience to deliver clear, reliable results.
Key Service Areas
1
NDT Testing
We inspect materials using methods like ultrasound and radiography to check for flaws.
2
Consulting
We provide expert advice and technical support for complex jobs.
3
Training
We offer certified training to help NDT workers meet industry standards.
4
Auditing
We review processes to check compliance and improve quality.
Industries Served
We work in industries where accuracy and reliability matter most:
Oil & Gas
We help check pipelines and equipment for safe, reliable operation.
Aerospace
We inspect aircraft parts to help support safety and performance.
Manufacturing
We check parts and machines to catch problems early.
Comprehensive NDT Services
Based in the United States, Deep Spectrum offers a wide range of materials testing services. We use modern computer-based tools and inspection equipment to deliver accurate results, reliable service, and fast turnaround at competitive prices. We inspect material thickness up to 65mm. All services are available in-house and on-site.
Ultrasonic Testing (UT)
Magnetic Particle (MPI)
Dye Penetrant (DPI)
PMI & Hardness Testing
Thickness & Ferrite
Industrial Radiography
Our technicians are highly trained, multi-skilled, and certified to PCN and SNT standards. This helps ensure strong technical quality and dependable service. All inspections follow recognized quality standards, with a focus on safety, precision, and customer satisfaction.
CERTIFIED SINCE 2008
EXPERT OVERSIGHT
Since 2021, Deep Spectrum Inspection Services LTD has focused on Level III strategy and procedure development for oil and gas and aerospace. Our experienced contractors help keep your work aligned with global standards. We provide technical guidance and support compliance with ASME, AWS, and ASNT codes.
Our Services
See what we do and contact us
Our Specialized Services
Deep Spectrum offers expert services to improve your NDT work and help you meet industry standards.
1
NDT Personnel Qualification
Training programs that give people the skills they need for NDT roles. Our courses help participants meet industry standards and prepare for certification and career growth.
2
NDT Procedure Development
We create clear NDT procedures for your project needs and compliance requirements. Our team prepares accurate, easy-to-follow procedures that support safe and effective inspections.
3
NDT Technical Support
Get expert help when you face NDT challenges or need operational support. We help solve issues, improve inspection processes, and keep your work on track.
4
NDT Method Qualification
Prepare for certification in NDT methods such as MT, PT, UT, and RT. Our programs help you meet strict standards for oil and gas, aerospace, and manufacturing.
5
NDT Procedure Development
We create clear and compliant NDT procedures for your industry needs, including ASME, AWS, and ASNT standards. This helps keep your inspection work safe, efficient, and compliant.
6
Technical Support Package
Get expert NDT support for your projects and daily work. We provide advice, troubleshooting, and technique guidance to improve your inspection results and maintain compliance.
Level III Consulting & Industry Trust
Specialized Engineering Services
Level III consulting, technical oversight, and procedure development
Training, certification support, and third-party audits
Failure review, gap analysis, and on-site or remote support
Trusted by Industry Leaders
Shell · BP · ExxonMobil · Chevron · Total Energies · Siemens · GE · Rolls-Royce · BAE Systems · Fluor · Bechtel · Laing Construction · Ministry of Defense
Deep Spectrum helps clients build strong quality systems, reduce risk, and improve performance across energy, aerospace, marine, nuclear, petrochemical, and manufacturing.
3201 Old Glenview Road, Wilmette, IL 60091
Analytics & Performance Dashboard
See our service quality and client satisfaction at a glance
Deep Spectrum shares clear metrics to show our focus on quality, reliability, and client satisfaction. The numbers below show strong performance across our services.
Key Performance Metrics
98.5%
Client Satisfaction Rate
From post-service surveys
2,500+
Inspections Completed
Across all testing methods
99.2%
On-Time Delivery
Projects finished on schedule
47
Certified Technicians
Qualified and certified staff
15+
Years Average Experience
Team experience level
0
Safety Incidents
No safety incidents
Most Requested Services
Our work includes a wide range of testing services. UT and RAD are the most requested.
Industry Breakdown
We serve several important industries and tailor our services to each one.
Response Time Metrics
Average Response Time
2 hours
Average Project Turnaround
5-7 business days
Emergency Support
Available 24/7
We respond quickly and complete work efficiently to help keep your operations running well.
Client Testimonials
What our clients say
"Deep Spectrum's Level III expertise and attention to detail have been very helpful to our work. Their team delivers accurate results and great service."

John Smith, Shell Oil
"Deep Spectrum's training programs have improved our team's NDT skills. Professional and thorough."

Sarah Johnson, Aerospace Manufacturing
"Their consulting helped us meet ASME standards and lower inspection costs. Good value and strong expertise."

Michael Chen, Petrochemical Corp
"Fast turnaround, accurate results, and great customer support. Deep Spectrum is our trusted NDT partner."

David Martinez, Energy Solutions
"Their technical knowledge and focus on safety are unmatched. We trust them with our most important inspections."

Emma Wilson, BAE Systems
Trusted by Industry Leaders
We work with the world's leading companies
Deep Spectrum has earned the trust of major global companies across oil and gas, aerospace, and manufacturing. Our clients rely on us for expert NDT services and technical support.
Join our growing list of satisfied clients
Contact Deep Spectrum Inspection Services
We can help with your inspection needs. Contact our team for questions, quotes, or project support.
Send Us a Message
Need a quote or have a question? Send us your request and our team will reply soon.
Our Details
Location: 3201 Old Glenview Road, Wilmette, IL 60091
We are available during business hours.