Extreme environments, precise operations

Hyperbaric Works

Working Under Pressure

Even the simplest tasks become complex when performed in hyperbaric conditions. In EPB (Earth Pressure Balance) projects, cutterhead maintenance often requires hyperbaric intervention due to soil conditions and face instability.

We’ve participated in multiple international projects involving pressurized interventions, and one thing is clear:

Methodology, scheduling, coordination, and mitigation planning are non-negotiable.

Without these, hyperbaric works can become costly, inefficient, and extremely hazardous.

Qualified Teams, Compliant with Regulations

Depending on national regulations, hyperbaric works must be performed by certified professionals with official authorization.
It is standard to involve professional divers with the proper qualifications and medical clearance.

Our teams coordinate with divers and site management to ensure:

  • Full compliance with legal and health standards

  • Minimized downtime for maintenance activities

  • Maximum safety for all personnel

Step-by-Step Safety and Efficiency

Hyperbaric operations require a well-defined protocol before, during, and after the intervention. Key steps include:

Front face inspection: The bentonite cake must act as a proper sealing membrane.

Air consumption control: Carefully calculated before chamber entry.

Earth level management: Adjusted depending on ground type and working pressure.

Inside the Chamber: Extreme Work Conditions

Once inside, workers face:

  • High temperature and humidity

  • Mud and bentonite residues

  • Reduced visibility and mobility

To maintain productivity and safety:

  • Video cameras and recorders help monitor and document operations.

  • Interventions are strictly time-limited, requiring a clear task focus.

  • Support personnel are often needed solely to assist those inside the chamber.

When only a wear inspection is needed, it’s crucial to focus on the most critical tools to maximize efficiency.

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