I am surprised to read a old news item (see the link below) on the above title. The title of the news item is about an accident causing burn injuries to seven persons. In the last para of the news article, it is stated that the unit was shutdown after the target was reached.
Normally, operations will be continued as any excess production too will add to balance sheet. If it is to meet CFO (consent for operation) / factory licence conditions or any other reason is not known.
http://timesofindia.indiatimes.com/City/Chennai/7-injured-in-naphtha-leak-at-Manali-ammonia-plant/articleshow/33631036.cms