detection radar station of the Southern Regional Meteorological Centre is located at the Centenary Building, the administrative building of the port. It is located atop the building at a height of about 53 m above sea level in a dome weighing 18 tonnes. The radar scans the atmosphere within a radius of 500 km. The Port Meteorological Office also functions from the same building. The India Meteorological Department (IMD) maintains Voluntary Observing Fleet (VOF) through the Port Meteorological Office comprising ships of Merchant Navy, Indian Navy and foreign agencies through which meteorological observations from the ocean area are collected on real-time basis for operational forecasting and climatological purpose. Disease control The Port Health Organisation, Chennai, functioning under the Director General of Health Services, Ministry of Health and Family Welfare, Government of India, was established in 1946 with an objective of preventing entry of yellow fever and other quarantinable and communicable diseases from abroad. Mosquito control in the port area is being undertaken by two agencies, namely, the Chennai Port Trust and the Port Health Organisation. Anti-mosquito measures are undertaken by the Port Trust while the issuance of yellow fever certificates, ship deratting and overall supervision of mosquito control is undertaken by the Port Health Organisation. Connectivity Extra-port connectivity The foundation stone for the 6,000-million Chennai Port-Ennore road connectivity project was laid in January 2011. The Ennore Manali Road Improvement Project (EMRIP) is expected to be completed in 2 years. Of the total cost of 6,000 million, 2,500 million would be contributed each by the National Highways Authority of India and the Chennai Port Trust while 582 million would come from the Tamil Nadu government and rest by Ennore Port Ltd. EMRIP, which was conceived in 1998, has been under implementation for the past 10 years. The project envisages improvement of a road network in north Chennai that connects all the container freight station handling containers for Chennai port. This includes of Ennore Expressway, of Thiruvotriyur–Ponneri–Pancheti Road, of Manali Oil Refinery Road, of the northern segment of Inner Ring Road, and of Chennai Port Trust Fishing Harbour Road, in addition to shore protection measures comprising 13 groins along the Ennore coast. The original cost of the project was 1,500 million but was revised due to addition of service road to the four lanes of Thiruvotriyur–Ponneri–Pancheti road, provision of underpass on Ennore Expressway Road and drainage on Manali Oil Refinery Road besides