A gas leak on Petrobras’ P-40 semi-submersible production platform in Brazil’s Campos basin prompted a precautionary halt to operations on 18 December 2025.

The unit operates in the Marlim Sul field. The workers’ union Sindipetro-NF said a contingency team was running the platform because a strike had reached its fourth day, and that personnel remained safe while waiting for the gas to disperse.

Petrobras said the incident was unrelated to the labor action. The company added that the leak was contained promptly after it was identified, with no impact on worker safety, and that other assets in the Campos basin continued operating normally. Petrobras did not provide a restart timeline.

The shutdown came as unions reported the strike spreading across additional facilities. According to union statements cited in the same report, contingency measures were adopted on several offshore units, including activity associated with the Buzios field in the Santos basin. The strike was also reported to have reached multiple refineries, four thermal plants, and two biodiesel plants.

Petrobras has previously said the strike has not affected oil and oil products output, citing continuity measures. The dispute has included issues related to a retirement fund deficit and proposed changes to the employee compensation structure.