Solution: 1. Training Dept. will opening class for oxygen training for person and department concern, and record for identify the person who can use the oxygen tank in emergency case properly. 2. Check the oxygen tank in good condition and work properly every month by HR Officer. 3. HR will be order a oxygen tank portable for nurse convenience to service. 4. All nurse had been informed by Khun Sairung from now on after received call for emercency case must went into the scene immedialy.