First on my team be prompted with equipment failure or unavailable, they are going to check and hung banners u / s devices and is moving into maintenance, but sometimes there will be problems on the track. due to equipment malfunctioning equipment equipment movement at a time on the track for some time, hang tags, u / s, then the staff are deployed without attention, which I've recommended them many times, when found defective device to stop its use is strictly prohibited. However, it is not the participation of worker