1 INTRODUCTION
1.1 OCCASO in the context of large surveys

2 THE OCCASO SURVEY
2.1 OCCASO science drivers
2.2 Clusters and stars selection
2.3 Observational facilities
2.4 Observational strategy
2.5 Data reduction

3 OCCASO FIRST DATA RELEASE: RADIAL VELOCITIES
3.1 Observational material
3.2 Wavelength calibration accuracy
3.3 Radial velocities
3.4 Comparison with literature
3.5 Discussion: relation to the disc kinematics

4 SUMMARY