Gas-Free Check on Pipes and Ducts

Before any inspection, relining, or maintenance work on a pipeline, it is imperative to ensure the health and safety of the atmosphere present. Gas Free certification is the instrumental analysis that guarantees the absence of toxic, asphyxiating, or explosive gases, representing the first and most important step towards operator safety.

Franchini Servizi Ecologici performs gas-free checks on pipes and sewer systems of all diameters and materials, providing the documentation necessary to safely authorize any type of work in confined spaces.

A Mandatory Step for Safety in Pipeline Work

Performing a gas-free inspection on a pipeline is essential for:

• Ensuring Operator Safety: It is the main preventive measure against the risk of intoxication, asphyxiation, or illness for personnel who must access or work inside or near the pipeline, in full compliance with Presidential Decree 177/11 on confined spaces.
• Preventing Explosions and Fires: Many remediation or repair operations (e.g., with UV or steam technologies) generate heat. The certification ensures the absence of flammable gases (zero LEL) that could trigger an explosion.
• Authorize Maintenance Operations: The gas-free report is an essential document for drafting the safety plans (POS) and obtaining the work permits needed to start the construction site.
• Validate the Cleanliness Status: Certifies that a pipeline previously used for the transport of hazardous substances has been adequately cleaned and remediated.

Our Instrumental Analysis Methodology

To ensure maximum data reliability, we follow a rigorous operating protocol.

• Section Isolation: The section of pipe to be analyzed is hydraulically isolated to prevent the entry of new flows during the measurement.
• Controlled Ventilation: We proceed with forced ventilation of the section to ensure complete air exchange and stabilization of the internal atmosphere.
• Measurement with Certified Probes: We insert probes connected to constantly calibrated multigas detectors into the duct to analyze key parameters in real time:
  • % Oxygen (O2)
  • Lower Explosive Limit (% LEL)
  • Carbon Monoxide (CO)
  • Hydrogen Sulfide (H2S)
  • Volatile Organic Compounds (VOC), if required
• Continuous Monitoring: During operations, the atmosphere can be continuously monitored to ensure safe conditions are maintained.

Issuance of the Audit Report with Full Legal Value

At the conclusion of the analysis, one of our qualified and certified technicians completes and signs the Gas Verification Report. This official document reports the instrumental values ​​detected, certifies the ""non-hazardous"" nature of the work environment for a specific period of time, and constitutes formal authorization to proceed with the planned interventions.

Safety in Pipeline Work Starts with a Certified Verification.

Ensure regulatory compliance and maximum protection for your staff. Contact us to schedule a gas-free inspection of your pipes, anywhere in Italy.