Average of time to solve the problem show the overall time to solve the problem not too difference. We diagnose the data of time period that problem occurred and found that. Before launch VEPS time period that problem occurred take two parts 9:00-12.00 a.m. and 2.00-4.00 p.m. The time period to solve the problem after launch VEPS is 07.00-10.00 a.m. Figure 5.3 shown times to solve the problem.