Preliminary investigations show the fire at the Port Dickson refinery was due to a lightning strike, the company said in a statement.
“The damages sustained from the fire incident are restricted to one crude tank area,” the company said.
The fire affected a 10,000-litre capacity oil tank, Malaysian state news agency Bernama reported, citing fire and rescue department officials. Firefighting operations were ongoing, it said.
Hengyuan is a subsidiary of China’s Shandong Hengyuan Petrochemical Co. The refinery at Port Dickson has a capacity of 156,000 barrels per day (bpd).