Gas-Free Tank Verification: Safety Certification and Remediation

The ""Gas Free"" certification is an essential instrumental analysis that certifies the non-hazardous atmosphere inside a tank. It is the fundamental safety requirement for authorizing any cleaning, maintenance, or decommissioning operation, protecting operators from the risk of explosion, poisoning, or asphyxiation.

Franchini Servizi Ecologici performs gas-free checks on all types of tanks, using state-of-the-art equipment and issuing certifications with full legal validity, drawn up by qualified technicians.

A Must-Have for Safety and Regulatory Compliance

Obtaining a gas-free certificate is not just good practice, but a legal requirement and an operational necessity for:

• Preventing the Risk of Explosion: The inspection ensures the absence of flammable vapors, eliminating the risk of ignition during hot work (e.g., welding) or when using electrical equipment.
• Protecting the Health of Operators: It ensures that the atmosphere is breathable and free of toxic or asphyxiating gases, an essential condition for accessing confined spaces (according to Presidential Decree 177/11).
• Obtaining the ""Work Permit"": The gas-free inspection report is a key document for processing the Work Permit, which safely authorizes maintenance activities.
• Proceed with Decommissioning: This is a mandatory step before scrapping or removing a tank (""gas free for demolition"").

Our Instrumental Verification Process

Our intervention follows a rigorous protocol to guarantee certain and reliable data.

• Preliminary Analysis: We evaluate the history of the tank and the substances it contained to identify potential risks.
• Use of Multigas Detectors: We use portable analyzers, constantly calibrated and certified, to measure key atmospheric parameters, including:
  • Percentage of Oxygen (O2)
  • Lower Explosive Limit (LEL)
  • Carbon Monoxide (CO)
  • Hydrogen Sulfide (H2S)
• Measurements Stratified: We perform measurements at different levels within the tank, as gases have different densities and can stratify. Forced Ventilation (if necessary): If the values ​​are not compliant, we proceed with controlled ventilation to purify the atmosphere and make it safe.