quality assurance (QA)

Yes, we provide complete and transparent project documentation that includes all test reports, certificates, and supporting documentation. Our documentation experts ensure that all audit requirements are met and that all quality assurance (QA) data is easily accessible.

Weld seams are inspected using various methods, including radiographic testing (RT), ultrasonic testing (UT), and TOFD (time of flight diffraction (TOFD)), as well as phased-array ultrasonic testing, to ensure the integrity and quality of the welded joints.

To ensure precision, we use state-of-the-art measurement methods, such as 3D laser scanner measurements and calibrated measuring instruments for in-process, final, and dimensional inspections. This technology enables extremely accurate measurement and documentation of the manufactured components.

We guarantee full traceability for every part and component. Each item is uniquely assigned to an order and documented throughout the entire production process. Our documentation specialists ensure that all test reports and certificates are complete and available at all times, including for future audits or maintenance activities.

To guarantee the leak-tightness of our products, we routinely perform pressure tests (hydrostatic and pneumatic) as well as leak tests. These tests ensure that all vessels and equipment meet the required standards and that no leaks occur during operation.

We employ highly qualified specialists, including:

• 3 certified inspectors for visual testing (VT), magnetic particle testing (MT), penetrant testing (PT), X-ray testing, time-of-flight detection (TOFD), and phased array ultrasonic testing (UT).
• One Level 3 inspector and two Level 2 inspectors for demanding inspection tasks.
• 2 welding technologists responsible for the project-specific preparation of WPS/PQRs and process controls.
• In addition, we have two specialized documentation experts who are responsible for ensuring full project traceability and managing customer audits.

We use various methods for material testing, including:

• Positive Material Identification (PMI) for comprehensive material verification.
• Ultrasonic testing (UT), radiographic testing (RT), magnetic particle testing (MT), and penetrant testing (PT).
• TOFD and phased array ultrasonic testing (UT) for a detailed analysis of weld seams.
• Surface roughness measurement using a tactile profilometer to accurately document surface characteristics.

We rely on a comprehensive quality assurance system that covers all phases of the project—from design through production to delivery. Our QA includes, among other things, visual inspections (VT), penetrant testing (PT), magnetic particle testing (MT), ultrasonic testing (UT), radiographic testing (RT), and hardness tests (HT). In addition, we use 3D laser scanner measurements for precise dimensioning.

Upon completion of the project, we provide comprehensive documentation that includes all relevant calculations, drawings, and certificates. This documentation meets all requirements for approvals and inspections and can be used as needed for future maintenance or modification requests.

We carry out a range of tests and validations to ensure that the designs meet the required safety standards. These include strength and leak tests as well as FEM analyses to check structural integrity.

We work with a variety of international standards and norms, including:

• AD 2000 (Germany)
• EN 13445 (EU standard for pressure vessels)
• ASME (United States)
• ASME U1 and U2 (for pressure vessel design)
• EN 1591-1 (for flange design)
• These standards ensure that all designs meet the highest safety and quality standards.

We ensure a reliable supply chain through close partnerships with our suppliers and regular supplier audits. We take a proactive approach to risk management and maintain transparent communication with all partners to prevent delays and quality issues.

Yes, we manufacture storage tanks and pressure vessels that are certified according to international standards and codes. These include, among others, ASME, EN 13445, and AD 2000. Our products meet the highest safety and quality requirements, both nationally and internationally.

100% German-sourced materials. We source our steel sheets exclusively from renowned German manufacturers such as Dillinger Hütte and Ilsenburger Grobblech. Our consistent focus on sourcing within Germany ensures the highest quality standards, tested materials, and maximum reliability in the supply chain. This is how true “Made in Germany” quality is achieved—from the raw materials to the finished component.

Our testing procedures include:

• Non-destructive testing (NDT) methods such as ultrasonic testing (UT), radiographic testing (RT), magnetic particle testing (MT), and penetrant testing (PT) for quality assurance (QA) of weld seams and materials.
• Pressure and leak tests (hydrostatic and pneumatic) as standard.
• Hardness tests (HT) to verify material hardness and suitability for use in specific applications.
• 3D laser scanner measurements for precise dimensioning of components.

We are certified according to international standards to ensure the highest quality and safety:

• DIN ISO 9001 (Quality Management)
• PED 2014/68/EU (Pressure Equipment Directive)
• EN 13445 (Pressure vessel construction)
• AD 2000 (German standard for pressure vessels)
• ASME U1, U2, and S stamps (for pressure vessel construction according to U.S. standards / pressure vessels and piping)
• EN 1090-1/-2 (Construction of load-bearing steel structures)
• DIN EN ISO 3834 (Welding Technology)

Our QA team carries out a variety of test procedures to ensure the safety and functionality of hydrogen storage tanks:

• Pressure tests: Hydrostatic and pneumatic tests are carried out to ensure that the vessel holds the required pressure.
• Leak tests: Helium leak tests or leak tests with nitrogen are used to ensure that the vessel does not lose any gases.
• Certification tests: Pressure vessels must be certified according to international standards such as ASME and AD-2000, which requires regular certification tests.

The thermal load capacity of membrane casings and hydrogen storage tanks is ensured by careful selection of materials and thermal simulations during the planning process. Engineers use finite element analysis (FEA) to simulate the behavior of the material under extreme temperature conditions. In addition, special alloy steels and corrosion-resistant materials are used to ensure the integrity of the vessels at both low and high temperatures.