Last week, we removed the Prometheus windows for cleaning. At the same time, we cleaned the 40168 spark gap at Rail Gap Trigger Unit. Unfortunately, the pipe fittings for spark gap were broken, we had to order them. This caused us to wait for about 2 days. Now everything is already, we are going to passivate the Prometheus. The operating voltage was about 14 kV for each bank, the passivation kept about 2 hours.