By Nidhi Verma
NEW DELHI (Reuters) - Chennai Petroleum Corp Ltd
The state-run company, a unit of the country's biggest refiner Indian Oil Corp
"We have shut down the entire refinery from last night due to heavy rains and floods," Chennai Petroleum Managing Director Gautam Roy told Reuters on Thursday in a short telephone conversation.
The company's smaller 20,000 bpd Nagapattinam refinery was, however, operating normally, he said.
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Chennai Petroleum's shares were down 4 percent at 194 rupees ($2.91) in afternoon trade on Thursday. They earlier hit a low of 191.60 rupees.
India's weather office has predicted more rains in Tamil Nadu this week, which could prolong the Manali refinery shutdown and disrupt fuel supplies.
($1 = 66.6350 rupees)
(Reporting by Nidhi Verma, Writing by Krishna Das; Editing by Christian Schmollinger)