Searches for Prompt Light Gravitino Signatures                                 
in e+e- Collisions at sqrt(s) = 189 GeV                                        
  
          Searches for final states expected in                                
          models with light gravitinos                                         
          have been performed, including                                       
          experimental topologies                                              
          with multi-leptons                                                   
          with missing energy, leptons and photons with missing energy,        
          and jets and photons with missing energy.                            
          No excess over the                                                   
          expectations from the Standard Model has been observed.              
          Limits are placed on production cross-sections in the                
          different experimental topologies.                                   
          Additionally, combining with searches for the anomalous              
          production of lepton and photon pairs with missing energy,           
          results are interpreted in the context of minimal models             
          of gauge mediated SUSY breaking.                                     
  
 Parallel session :11                  
 Plenary  session :7a