17 June 2013, Macau

CEM once again surpassed its best supply reliability records in 2012 with 99.9999%* Average System Availability Index (ASAI). The excellent result puts CEM as one of the world top performers even considering the rapid increase in demand. This is a clear indication on the adequate investment and maintenance strategies adopted in recent years.

To further secure the supply reliability, recently CEM Network Operations and Maintenance Department together with Dispatch Centre implemented a network drill at Avenida de Luis de Camões, Coloane. During the drill, a new medium-voltage by-pass cable was used to speed up the medium-voltage equipment fault handling. This new equipment enables to supplement the current practice with more viable solutions to handle the faults in a more efficient way. Over 20 persons from the Emergency and Maintenance Team, Dispatch Centre and contractor participated in the drill. The drill simulated a situation with a fault happened on a major medium-voltage equipment. Outage time of such kinds of equipment fault was vastly shortened by 50% with the new by-pass cable utilized.

Another two network drills were implemented in March and April at the two new residential areas Taipa Habitação Eco, Edifício do Lago and Coloane Habpub Seac Pai Van. With immense number of households gradually moving in, new network installations have been built to meet the drastic increase of power demand. The emergency response ability for these areas is tested to ensure readiness of contingency.

These network drills were part of various drills in the Company annually targeting to continuously fine tune the emergency procedures, to enhance the cooperation among CEM’s and contractors’ crew and to shorten the power interruption time when equipment faults occur.