IOC said the backlog of supplies in Kerala is 15 days and the new import facility was aimed at easing the same.
Also, the import terminal would minimise the movement of bulk LPG tankers through the highways in the state.
IOC moves bulk LPG from Mangalore to various LPG bottling plants in North Kerala through about 100 bullet trucks every day, which ply on narrow highways.
"A pipeline connecting the proposed LPG import terminal to Kochi Refineries and the LPG bottling plants at Udayamperoor, Palakkad, Coimbatore, Erode and Salem would go a long way in reducing congestion on the state highways," the company said in a statement.
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IOC said the National Green Tribunal (NGT) had in August 2016 permitted the company to continue with the work.
However, a small group of people have been obstructing the work since February 16.
"The NGT, vide its order of April 13, 2017, has reconfirmed its August 2016 order permitting IOC to continue with the work. The High Court of Kerala too had permitted IOC last year to carry out the work 24x7," the statement said.
"IOC has been suffering a loss of close to Rs one crore per day since the obstruction of work from February 16, 2017," it said.
The nation's largest oil firm said the project not only has all the necessary approvals in place but is designed to conform to global standards of safety.
Stating that its team has been engaging with all the stake-holders on safety measures, IOC said the terminal will store LPG in mounded vessels, which are considered the safest in the industry worldwide.
Also, the terminal is being equipped with automatic fire-protection systems and is being constructed in the Special Economic Zone notified by the Central Government in 2006 for the specific purpose of setting up industries.
"The coastal stretch of the project is only 690 metres and hence will not disturb any of the fishing activities," the statement said.