The Comptroller and Auditor General has reported deficiencies in planning and execution of capital projects, operation of processing units, and operation of support facilities, leading to cost and time overruns at Mangalore Refinery and Petrochemicals Ltd.

These discrepancies have been highlighted in the performance audit report on the Planning and Implementation of Phase III Expansion Project of Mangalore Refinery and Petrochemicals Ltd, tabled in Parliament on Wednesday.

CAG notes that the initial project cost to increase the refinery capacity from 11.82 mmtpa to 15 mmtpa was estimated at Rs 7,943 crore in 2006.

The estimates of cost underwent changes from time to time due to change in capacity and the addition and deletion of various units. As of October 2015, the total adjusted estimated cost of the project worked out to Rs 16,323 crore. Against this, the company had incurred an expenditure of Rs 14,832 crore by March 2016. The project, which was initially proposed to be completed in June 2010, was actually completed in June 2015.