How to treat deactivated energized cables in active plants.

Understanding deactivated energized cables

In active industrial plants, it is common to find energized cables that have been deactivated but still remain connected to the installations. These cables can pose significant risks to operational safety and plant integrity if they are not handled properly.

Identification and signaling of deactivated cables

The first step in the safe handling of deactivated cables is correct identification. Use tags, colored tapes or specific labels that indicate the deactivated status, avoiding confusion with cables in operation. In addition, clear signage facilitates future interventions and maintenance.

De-energization and proper insulation

Even if a cable is deactivated, it is crucial to ensure that it is de-energized to eliminate electrical risks. The insulation must then be revised or reinforced, using appropriate materials such as high-quality insulating tape, heat shrink tubing or protective boxes, ensuring that the cable is completely safe, even if it is still physically present in the plant.

Documentation and recording of interventions

Recording all actions taken in relation to deactivated cables is essential. Keeping a documented history of deactivations, repairs or insulation helps control the plant and facilitates audits, inspections and future maintenance.

Planning for future removal or reuse

Assessing whether deactivated cables will be removed or kept for future use is part of responsible treatment. If removal is chosen, safety procedures must be followed for cutting and disposal, always respecting environmental standards. If the decision is to reuse, ensure that the cables are in suitable condition and properly identified.

Applicable standards and regulations

Following national and international technical standards, such as those of ABNT and NR-10, ensures that the treatment of decommissioned cables is carried out safely and in accordance with current legislation, preventing accidents and ensuring the legal compliance of plants.

Team training and safety culture

Training the team responsible for plant maintenance and operation to identify and treat deactivated cables is essential. Promoting a safety culture that emphasizes attention to these cables reduces risks and contributes to a safer working environment.

Conclusion

The proper treatment of deactivated energized cables in active plants involves identification, de-energization, isolation, documentation and compliance with standards. Adopting these practices promotes the safety, efficiency and longevity of the installations.