South Korea and the United States ended two days of negotiations on Friday on revising the 1974 nuclear cooperation pact.
Both sides recognized the importance of the field of nuclear energy in bolstering their bilateral relationship.
Discussions this week focused on the basic framework and negotiating mechanism, as well as how to enhance technological, industrial and commercial cooperation.
The two allies had agreed to conduct seperate studies of pyroprocessing that is, Seoul's proposed method of reprocessing its spent nuclear fuel.
The deal currently bans Seoul from reprocessing its own nuclear waste to prevent the proliferation of weapons-grade nuclear material.
The joint research steering committee is scheduled to meet in the US state of New Mexico in April to launch the ten-year-long study.
Also, the third round of talks on the nuclear agreement will be held some time in June or July in Washington.