Reliance Industries Ltd
The CDU will be shut from March 20 for about 3-1/2 weeks, the company said in a statement without specifying the unit's capacity.
Reliance also plans to replace a catalyst at a vacuum gasoil and naphtha hydrotreater.
"The rest of the refinery will continue at normal levels of operations," the company said.
Reliance operates two refineries in Jamnagar with a total capacity of 1.24 million barrels per day (bpd), making this one of the world's largest refining complex in a single location.

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