[en] Since 1988 EdF has decided to inspect the RCCA of all the nuclear plants. This decision has reinforced by two incidents which occurred in 1988 and 1989 where one rod broke by excessive wear. The inspection allowed to identify two problems: Clad wear due to fretting; clad swelling which could induce cracks. To address these problems essentially three actions are initiated: The first concerns the immediate requirements and consists in defining a RCCA management strategy based on mechanical calculations. This strategy includes controls, axial repositioning and specific rejection criteria. Second concerns some design improvements of RCCA. Regarding the wear problem, various hardening methods of the clad have been investigated (nitride, chrome carbide, chrome). For the swelling, an increase of the gap between the absorber and the clad should delay their interaction. Third, is a long term work and more ambitious approach. It consists in a large R and D program concerning the study of the phenomena involved in three wear process. The aim is to build a full set of models and to gather it in a computer code, for predicting RCCA wear. The state of these actions is the following: The first action has allowed Utilities to operate their power plants in safety conditions, even with standard RCCA. In the second, out of pile tests have demonstrated the potential efficiency of various remedies. These remedies are progressively introduced, now about 180 new design RCCA are in reactors. The first controls confirm the good behaviour of these solutions. The third action is still in progress. EdF has planned to qualify the code in 1995. Then it will be possible to perform analytical studies to investigate modifications on the design of RCCA or internal guide tubes. (author). 2 refs, 6 figs, 2 tabs