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The Port of Tubarão. Image courtesy of Eriksailor/Wikimedia Commons.

An explosion rocked a Petrobras fuel depot at Brazil’s Port of Tubarão on Wednesday and left two workers dead.

According to Reuters, the blast occurred at a heating unit located at a fuel depot for ocean-going ships near Vitória, Brazil.

The explosion sparked a fire while workers were conducting planned maintenance on the heating unit.

On-site firefighters were able to bring the blaze under control.

No spills have been reported.

The names of the deceased workers have not been disclosed yet.

BR Distribuidora, the fuel distribution unit of state-owned Petrobras, told Reuters that the accident does not present an immediate risk to anyone near the site.

The heating unit blaze is the third fatal accident at a Petrobras facility in Brazil’s Espirito Santo state this year.

An explosion rocked the Petrobras operated Cidade de Sao Mateus FPSO in February, killing five people and leaving four others missing.

In July, two workers at a Petrobras oil terminal construction site drowned after scaffolding the men were working on collapsed.

The three accidents have killed a combined 13 workers and injured at least 26 others, Reuters said.

Last week, Petrobras’ board approved a plan for an initial public offering for up to 25 percent of its stake in BR Distribuidora.

The vote was opposed by BR Distribuidora chairman Murilo Ferreira, who argued the company needs to revamp its management before the offering.