Tank Welding and Construction, CITAL Technology for On-Site

Industrial precision, safety and operational continuity even for large-scale tanks

In the industrial plant engineering sector, Tank Welding and Construction for large-capacity storage tanks directly on site represents a highly complex technical challenge, requiring multidisciplinary expertise, advanced welding technologies and rigorous quality control.

Over the years, CITAL Srl has developed a proprietary on-site assembly and welding technology that enables the construction of large-scale tanks while ensuring the same quality standards as workshop fabrication, fully compliant with international regulations.

 

 

 

 

When workshop fabrication is not possible

Many industrial plants face dimensional, logistical or structural constraints that make the transport of prefabricated tanks impractical or impossible:

• • large diameters
  • significant heights
  • unit weights exceeding transport limits
  • brownfield sites with limited space
  • remote or hard-to-access industrial areas

  In such contexts, on-site construction becomes the only technically viable solution.

CITAL addresses this requirement through an integrated engineering approach that combines controlled prefabrication, modular assembly and automated welding directly on site..

The CITAL method: prefabrication + advanced on-site welding

The CITAL process for on-site tank construction is based on a structured operational sequence:

1. Engineering and detailed planning
   Each project is developed in 3D, including erection sequences, site logistics, safety aspects and interfaces with existing facilities.
2. Controlled prefabrication of sections
   Shells, bottoms, roofs and accessories are manufactured in the workshop or at equipped port areas, ensuring dimensional accuracy and material quality.
3. Modular on-site assembly
   The sections are progressively assembled on site using high-precision positioning and alignment systems.
4. Automated and semi-automated on-site welding
   The core of CITAL’s technology, enabling consistently high-quality joints even for large thicknesses and diameters.

Welding technologies employed

CITAL applies on site the same advanced welding technologies used in its workshops, adapting them to the specific operating conditions of the project site:

• GTAW / TIG
• GMAW / MIG-MAG
• FCAW
• Orbital welding
• Automatic circumferential welding

All welding procedures are qualified in accordance with international standards and supervised by a Welding Coordinator.

Quality control and certifications

On-site construction does not reduce quality requirements in any way. On the contrary, every phase is subject to:

• certified welding procedures (WPS / PQR)
• qualified welders and operators
• non-destructive testing (VT, PT, MT, RT, UT)
• full material traceability
• supervision by Notified Bodies (RINA, TÜV SÜD, SGS, etc.)

The process complies, among others, with:

• PED 2014/68/UE
• ASME VIII Div.1
• EN 13445
• AD 2000 Merkblatt
• API 650 / API 620
• ISO 3834-2

 

Benefits of CITAL technology for the client

The construction of tanks directly on site offers tangible advantages:

→ elimination of transport limitations
→ reduction of overall project timelines
→ maximum adaptability to existing plants
→ high safety standards
→ certified quality equivalent to workshop fabrication
→ operational continuity even in complex facilities

This technology is particularly suitable for:

→ chemical and petrochemical plants
→ bioethanol and biocommodities facilities
→ energy industry
→ food & beverage and pharmaceutical plants
→ large-capacity tank farms

 

 

International experience on complex projects

Over the years, CITAL has applied this technology to hundreds of tanks installed across Europe, America, and Asia, including multi-unit tank farms, tanks made of special steels, duplex and superduplex materials, and equipment subject to fatigue cycles.

The combination of long-standing know-how, continuous innovation and rigorous welding control makes CITAL a reliable partner for highly complex industrial projects.

Conclusion

CITAL technology for on-site tank welding and construction represents a mature, safe and proven industrial solution, designed to meet the most demanding requirements of the modern industrial world.

When size becomes a challenge, CITAL engineering becomes the answer.

Contacxt us:https://cital.it/en/contacts/