The hydrochloric acid leak resulting from a container parked at the Leixões Railway Freight Terminal, in Matosinhos, Porto district, occurred at 11:45pm on Tuesday.
According to APDL, the incident was “promptly reported and the subject of immediate intervention” by the competent authorities, with the support of emergency teams.
“The situation is currently under complete control, and the leak was effectively contained, with no significant impacts recorded”.
Access to the port of Leixões, via the A28, was closed as a precautionary measure and has since reopened at 8am and is operating normally.
APDL also says that it "will continue to monitor the situation in conjunction with the responsible entities" and reiterates "its commitment to safety and environmental protection".