Lockout/tagout of industrial equipment and functional systems

What is lockout-tagout and how does it ensure safety during industrial operations?

In industry, lockout of equipment and operational systems is an essential step to protect people, secure facilities, and prevent unintended restarts during maintenance work. It involves isolating hazardous energy sources, locking out the relevant components, and ensuring that the equipment cannot be restarted until the operation is complete.

Beyond compliance, lockout is above all a preventive measure. It reduces the risk of accidents during maintenance, repair, cleaning, or inspection operations by establishing a clear framework for securing the system before any work begins.

Why is lockout/tagout strategic?

In an industrial environment, there are many sources of energy: electrical, pneumatic, hydraulic, mechanical, thermal, chemical, or even radiation. A well-designed lockout/tagout procedure allows these energy sources to be neutralized methodically to prevent accidental startup or unintended release of energy.

Best practices in this area are well-defined: the INRS brochure “Lockout and Tagout” (ED 6109) details the preventive measures to be followed for electrical, pressurized, and mechanical equipment.

This requirement applies to production equipment as well as utilities, technical networks, and ancillary facilities. It requires a preliminary risk analysis—typically conducted as part of a work permit—a precise identification of isolation points, and rigorous coordination among operators, maintenance personnel, and contractors.

The limitations of paper

At many sites, work permits and lockout/tagout approvals still rely on paper forms. This process can lead to delays, lines for signatures, risks of data entry errors, and difficulty in establishing a shared understanding among production, maintenance, and safety teams.

Paper also complicates traceability. Quickly retrieving the history of an authorization, verifying links between a work permit, a lockout/tagout record, and other safety documents, or tracking the exact status of a work site becomes more cumbersome as the volume of work increases.

Benefits of digitization

Digitizing work permits transforms this process by making it more streamlined, transparent, and controllable. Digital solutions speed up data entry, automate approval workflows, enable electronic signatures, and allow real-time tracking of authorizations via shared interfaces. A key safety benefit of digitization is that approval to begin a work activity is contingent on the status of the lockout, which is managed through its own approval workflow. Similarly, it is impossible to initiate a decommitment order while work is still in progress. The same applies to any supplementary permits associated with the work permit: if one of them is not approved, the process is blocked.

It also improves the quality of safety measures. By reducing manual tasks, we minimize oversights, standardize forms, and make information available more quickly to the right people. For field teams, this means faster decision-making and better-managed work orders.

The benefits of TracKs

TracKs, software developed by Nerya—based in Aix-en-Provence—is designed specifically to enhance safety and streamline processes. The solution focuses on operational management of work permits, featuring data entry shortcuts, signature workflows tailored to on-site conditions, and a consolidated view of planned, ongoing, and completed authorizations.

A key strength of TracKs lies in the operational links between documents. TracKs allows users to define consistency rules—for example, preventing the release of equipment if a permit is still active, or blocking the issuance of a permit until the necessary preparatory measures for starting work have been taken. This approach reduces document inconsistencies and enhances risk management.

This approach integrates with the e-PdP prevention plan software to cover the entire scope of concurrent activities and on-site prevention.

How this changes things on the ground

With TracKs, teams save time on preparing and approving permits, while also improving reliability. Managers have clear, real-time oversight of concurrent activities, ongoing work, and areas requiring attention on-site.

The TracKs solution also helps better structure the relationship between production, maintenance, safety, and contractors. By centralizing information and streamlining communication, it facilitates more rigorous safety protocols for work activities, while improving traceability and overall operational management.

Conclusion

Lockout remains a cornerstone of industrial safety, but its effectiveness now depends as much on the rigor of the procedures as on the quality of the digital tools that support them. This optimizes the work of trained and competent lockout coordinators, who play an essential role in the safety of an industrial site.

Discover TracKs and connect with Nerya