The TC programme is unique in the United Nations system, as it combines specialized technical and development competencies. The TC programme operates in four geographic regions: Africa, Asia and the Pacific, Europe and Latin America. Within each region, it helps Member States to address their specific needs, taking into consideration existing capacities and different operational conditions. The programmes strategic goal is to promote tangible socioeconomic impact in IAEA Member States, by contributing in a cost-effective way to the achievement of the major sustainable development priorities of each country.

According to the mandates IAEA provides technical assistance to Sri Lanka in the sectors of agriculture, human health, industry, environment, radiation protection, water resources management, energy planning and feasibility studies of nuclear power.