Post-Tensioning for Nuclear Containments

Structural reinforcement for safety, durability and long-term performance

Nuclear containment structures are designed to withstand extreme loads, internal pressure, seismic actions and long service lives. Crack control, watertightness and durability are critical to ensure structural integrity under both normal operation and accidental scenarios. Post-tensioning applies permanent compression to concrete, limiting cracking and enhancing structural performance. VSL provides engineered post-tensioning solutions fully adapted to nuclear safety, quality and regulatory requirements.

Why post-tensioning for nuclear containments?  

Nuclear containment structures must maintain integrity under internal pressure, thermal effects, seismic loading and long-term environmental exposure. Conventional reinforcement alone may not provide sufficient crack control or durability. Post-tensioning introduces compressive forces into the concrete, reducing tensile stresses, limiting crack formation and improving watertightness. This technique supports reliable structural behavior and compliance with stringent nuclear safety requirements.

Post-tensioning limits cracking and reduces pathways for leakage.

Permanent compression improves resistance to internal pressure and seismic loads.

Reduced cracking protects reinforcement and extends service life.

Optimized reinforcement can reduce concrete thickness and steel quantities.

Systems meet strict safety, quality and traceability standards.

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VSL’s Post-Tensioning Services

VSL delivers integrated post-tensioning solutions for nuclear containment projects, combining proprietary systems with nuclear-grade execution.

Structural assessment and post-tensioning concept definition

Design coordination with containment structures

Supply of certified post-tensioning systems and equipment

Installation supervision and stressing operations

Quality control, testing and nuclear documentation

Long-term monitoring and maintenance support when required

Why Choose VSL for Post-Tensioning

  • Proven post-tensioning expertise

    VSL is a global reference in post-tensioning technology.

  • Experience in nuclear construction environments

    Execution complies with strict nuclear safety and QA frameworks.

  • Integrated structural approach

    Post-tensioning is coordinated with concrete design and load paths.

  • End-to-end project support

    From early design studies to execution on site.

Frequently asked questions about post-tensioning in nuclear containments

These are some of the most common questions we receive. Got another one? Reach out to us!

It controls cracking, improves watertightness and enhances structural performance under extreme loads.

Typically in containment walls, slabs and other critical concrete elements.

By maintaining compression in concrete, it limits damage and improves energy dissipation.

Yes. VSL provides strengthening and upgrading solutions for existing facilities.

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Looking for reliable post-tensioning solutions for nuclear containment structures?

Contact VSL to discuss a solution adapted to your project constraints.