Scheduled and Unscheduled outages
| Date from | Date to | reason | time |
| 2015/07/16 8:00 | 2015/07/16 12:00 | scheduled maintenance of the electric power system | 04:00 |
| 2015/07/21 8:00 | 2015/07/21 16:00 | scheduled maintenance of the electric power system | 08:00 |
| 2015/10/07 2:49 | 2015/10/07 16:02 | unscheduled failure of a core switch | 13:47 |
| Impact | ||||||
| Very Low | Low | Medium | High | Very High | ||
| likelihood | Very High | |||||
| High | ||||||
| Medium | ||||||
| Low | ||||||
| Very Low | ||||||