1. Repair the pipe and increase the support of the pipe to be hard to break when someone hit it. (by 3/28)
2. Change the attaching position of the valve, so as not to operate in an unreasonable posture. (by 3/28)
3. Based on this accident, educate and instruct facilities staffs and employees of the subcontractor to operate the valve after confirming the hazard in the surrounding. (3/7)