Searches for R-Parity Violating decays of                                      
Supersymmetric Particles with lambda Couplings                                 
at 189 GeV at LEP                                                              
  
Searches for pair-produced gauginos and scalar leptons with                    
decays violating R-parity with lambda couplings have been performed            
using a data sample corresponding to an integrated luminosity of               
about 180 pb^-1 collected with the OPAL detector                               
at a centre-of-mass energy of sqrt{s}= 189 GeV.                                
The searches have been performed under the assumptions                         
that the lightest supersymmetric particle promptly decays                      
and that only one lambda_(ijk) R-parity violating coupling is dominant         
for each of the decay modes considered.                                        
Such processes would yield multiple leptons and jets plus leptons with or      
without significant missing energy in the final state.                         
No excess of such events above Standard Model backgrounds                      
has been observed.                                                             
  
 Parallel session :11                  
 Plenary  session :7a