Locating Underground Cables

 

The Electricity Supply Lines (Protection) Regulation requires that a competent person shall undertake cable detection to ascertain the existence, alignment and depth of underground electricity cables before excavation.

​

The competent person must be approved by the Director of Electrical and Mechanical Services and  shall carry out the cable detection according to the steps as stipulated in the "Code of Practice on Working near Electricity Supply Lines". A competent person failing to perform cable detection work to the reasonably expected standard may have his/her approval as a competent person suspended for a period up to 12 months.

​

The competent person shall pay attention to the following items:

1. shall not delegate his duty of cable detection work to another person;

2. may carry out cable detection work with the assistance of other persons, but such persons shall be directly supervised by that competent person;

3. shall carry out cable detection work in a manner without causing damage to the underground electricity cables;

4. if there is any difficulty in detecting the underground cables, assistance from the power company must be sought :

5. shall provide a "Competent Person Written Report" to the responsible person of the work site and give a site briefing to the site personnel.

​地下線路探測

 

地下線路探測必須由合資格人士執行。在進行工序時，如未能達致應有的合理⽔平，可被暫時吊銷該合資格⼈⼠的認可達12個⽉｡

​

《供電電纜 (保護) 規例》規定，在挖掘⼯程進⾏前，合資格⼈⼠應進⾏電纜探測以確定是否有地下電纜，並量度該地下電纜的準線及深度｡

 

探測地下電纜是專業⼯作，合資格⼈⼠必須由機電⼯程署署長認可，並根據 ｢有關在供電電纜附近⼯作實務守則｣ 內所列出的步驟進⾏探測⼯作｡

 

合資格⼈⼠應注意以下事項：

1. 不得將電纜探測⼯作的責任轉授予他⼈；

2. 可在其他⼈⼠的協助下進⾏電纜探測⼯作，但該等⼈⼠的⼯作須由該合資格⼈⼠直接監督；

3. 在進⾏電纜探測⼯作時，須以不會導致地下電纜受損的⽅法進⾏；

4. 如確實難以探測有關的地下電纜，必須向供電商尋求協助；

5. 在探測⼯作完成後，須向⼯地負責⼈提交 ｢合資格⼈⼠書⾯報告｣，並向⼯地⼈員講解報告內容｡​