| 1 | Attending meeting on Cooperation with the Third World Youth Organizations held at Vellata (Malta), May, 1981. |
| 2 | Attending meeting on Role of Youth Towards Better Life in Towns, held at Salzburg (Austria) in August, 1981. |
| 3 | Member of Study Group deputed by the Govt. of India, Ministry of Environment & Forests to visit Norway and study pollution control at Aluminium Industry in Norway, September–November, 1986. |
| 4 | Member of Indian delegation attending meeting of Technical Working Group under the Basel Convention, representing Ministry of Environment & Forests, Govt. of India, Geneva, February, 1997. |
| 5 | Member of Indian delegation attending 4th meeting of the Conference of Parties (CoP) to the Basel Convention held at Kuching, Malaysia, February, 1998. |
| 6 | Member of Indian delegation attending joint meeting of the Technical Working Group with the Consultative Sub-Group of Legal & Technical Experts of the Basel Convention held at Pretoria (South Africa), November, 1998. |
| 7 | Member of Indian delegation attending meeting of the Technical Working Group of the Basel Convention held at Geneva, April, 1999. |
| 8 | Member of Indian Delegation attending 5th Conference of Parties to the Basel Convention, held at Basel (Switzerland), December 1999. |
| 9 | Study tour to Hazardous Waste Treatment, Storage and Disposal Facilities (TSDF) in Switzerland and Germany, December, 1999. |
| 10 | Training programme on Industrial Waste Management held at Tokyo by AOTS (Japan) – CII (New Delhi), Japan, March, 2000. |
| 11 | Member of Indian delegation attending meeting of the Technical Working Group of the Basel Convention held at Geneva, October, 2000. |
| 12 | UNEP–Basel Convention assignment through APCTT, New Delhi, regarding needs assessment for environmentally sound management of hazardous wastes in Nepal, August, 2001. |
| 13 | Training programme on inventorisation and operation of manifest system for Management of Hazardous Waste held in Germany, December 10–22, 2001. |
| 14 | Visit to M/s. Indaver NV, European Waste Management Centre, Antwerp, Belgium, December 20, 2001. (As part of training programme at Sl.No.13). |
| 15 | Presentation of papers on Lead and Zinc waste recycling at World Recycling Congress held at Geneva in February 2002. |
| 16 | Member of Indian Delegation at meeting of Technical Working Group under Basel Convention, Geneva, May 2002. |
| 17 | Member of Indian Delegation at the 6th Conference of Parties (CoP) to the Basel Convention held at Geneva, December 2002. |
| 18 | Member of Indian Delegation at the 1st Open-Ended Working Group (OEWG) under Basel Convention, Geneva, April/May 2003. |
| 19 | Member of Indian Delegation at the 2nd Open-Ended Working Group (OEWG) under Basel Convention, Geneva, October 2003. |
| 20 | Member of CII-CIDA sponsored Policy Mission to Canada regarding National Environment Policy & CDM issues, April 4–12, 2005. |
| 21 | Delegate to 6th International Urban Air Quality Forum, Indianapolis, USA & meetings with US EPA at Washington, June 22–28, 2004. |
| 22 | Delegate to 7th International Urban Air Quality Forum, Minneapolis, USA & meetings with US EPA at Washington, June 22–30, 2005. |
| 23 | Delegate to AECEN Regional Forum 2006, Hanoi, Vietnam, December 4–5, 2006. |
| 24 | Delegate to BAQ–2006 held at Yogyakarta, Indonesia, December 13–15, 2006. |
| 25 | Participation in 4th International Environment Exhibition and Conference at Abu Dhabi, 28–31 January, 2007. |
| 26 | Advisor: Training Programme on Environmental Impact Assessment Process for Autoridade Nacional de Petroleo, Timor Leste, January 2013. |
| 27 | Study of Incineration-based Waste to Energy technologies in Germany at M/s Martins GMbH and M/s Michaelis GMbH, August 2015. |
| 28 | Study of Waste Management at Changi Airport, Singapore, by M/s Ramky Enviro Engineers Ltd. October, 2018. |