This project aims at the realization of a wearable supervision system for chemical installations based on the augmented reality paradigm. Augmented reality improves the perception the operator has of his surrounding environment by overlaying real-time computer-generated images onto the real world. This document describes the work realized from the beginning of this year. The first step was to implement a simplified version of the system to show that such a system is feasible and usable for the supervision of chemical plants. This was done in the prototype α1, which was released in April 2004. Based on knowledge acquired during the design and the implementation of the first simplified prototype called α1, a complete and better version of the system, the prototype α2, is currently being developed.