本公司特此對昨日受影響客戶所造成的不便深表歉意。
昨日﹝4月9日﹞早上8時左右，本公司的三座機樓中，其中一座所處的大廈，電力供應系統癱瘓，以致整座大廈的電力供應中斷。當時，機樓內的備用電池已即時接替供應電力，所以當時的通訊系統並未受到影響。同一時間，後備發電機亦被啟動，也成功接駁並取代電池向機樓提供電力。
至早上10時35分，後備發電機的起動器之一項配件在不明原因下突然損毀，因而產生很大的瞬間電流，導致線路保護器斷路，所以備用電池都不能接駁。由於電力中斷，部份地區及九龍區部份港鐵站，未能提供流動通訊服務。公司的緊急應變小組即時展開搶修工程，流動服務由中午12時15分起於個別地區陸續恢復。除了少數個別服務外，話音及流動上網服務於下午1時大致恢復正常，而於下午2時30分左右，所有短訊服務亦全面回復正常。於事件當中，本公司的另外兩座機樓一直維持正常運作。
本公司會定期為所有發電機進行例行檢查和測試，而出現問題的後備發電機亦剛於2月22日進行過例行檢查和測試，結果一切正常。本公司會提交是次事件的報告予通訊事務管理局，並且會檢討於突發事件的通報機制。
對於是次大廈供電系統及後備供電系統出現不尋常的意外，本公司會進行徹底調查，以找出問題的根源。本公司亦會汲取事件的教訓，並作出改善，避免同類事件再次發生。
We sincerely apologize for the inconvenience caused to our customers yesterday.
On 9 April at around 8:00 am, the building in which one of our three switching centres is located, suffered a total power failure disrupting the power supply to the entire building. Our switching centre’s standby battery system immediately substituted the failed power source and there was no disruption to service. Our backup generator then commenced operation, successfully taking over from the standby battery system.
At approximately 10:35am a component in the starter circuit board of the backup generator broke down unexpectedly, causing the generator to stop operating. This also caused a huge surge of electrical current that triggered circuit breakers to disconnect the cellular switching system from the standby battery system. The resulting power outage disrupted cellular service in several areas in Hong Kong and selected MTR stations in Kowloon.
Emergency restoration and recovery procedures started immediately and service was restored progressively from 12:15pm onwards. Aside from a small number of selected services, voice and mobile internet services were largely back to normal at 1:00pm. From 2:30pm onwards, all SMS services had returned to normal. The Company’s two remaining switching centres operated as normal during this incident.
The Company carries out inspections and tests of all power generation facilities regularly. The backup generator which caused the outage successfully passed recent inspections and tests on February 22nd. The Company will submit an incident report to the Office of the Communications Authority and will re-evaluate its procedures for informing the public and its customers
We will thoroughly investigate both the reasons for the building’s power outage and the failure of our power backup systems in order to ascertain the root cause. We are determined to learn from these findings and make improvements to prevent similar incidents in future.
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本帖最後由 失去靈魂騎兵師 於 11-4-2012 00:45 編輯 ]
