ZAMBOANGA DEL SUR, Philippines – The National Grid Corporation of the Philippines has started yesterday, September 6, its repair works on the Aurora-Ozamiz transmission line.
The NGCP-Mindanao Operations and Maintenance described the work “sling operations”, or the aerial transport of steel poles from the staging area in Barangay La Victoria, Aurora, Zamboanga del Sur to the structures sites in Usugan, Tambulig, Zamboanga del Sur and San Jose, in the same province.
The structure site is found the existing transmission structures of the NGCP’s Aurora-Ozamiz 69 KiloVolt line which is scheduled to be repaired and rehabilitated in the third week of September. This includes structures number 36 to number 57 located from the town of Usugan to San Jose.
This line serves consumers in the towns of Aurora and Calamba, Zamboanga del Norte.
“During the inspection of our linemen, nakita nila nga ang mga duna nay mga defects. Para ma-improve ang atong reliability sa atong mga (they discovered the defects. to improve its reliability of the) transmission lines, we have to repair those defective structures,” Mr. Ed Cabanos, chief engineer of NGCP MOM, said.
“The purpose here is to facilitate the hauling because the structure area is marsh land and the condition of the terrain is very hard to access. It will take long time to finish the hauling if we will not do aerial transport,” he added.
There are 21 steel posts to be transported in the said area to be replaced to the 21 wooden structures.
NGCP is implementing a program that all wooden poles and light weight towers will be replaced by steel poles and this will be finished by 2020.
Before transporting the poles to the structure sites, it said it was not easy to locate the staging site, according to Cabanos.
“We requested aerial reconnaissance first para makakita ta og mga areas nga pwede mahimong staging site. Dinhi sa nga area, dunay tulo nga atong napili pero ang duha ka area, dili mosugot ang mga land-owners. Pasalamat ta nga walay problema ang tag-iya aning yuta nga atong nahimong staging area dinhi sa La Victoria
(to let us determine which areas would be the staging site. In this site, we identified three sites but in the second area, the landowners would not permit us. We are thankful that the was no problem with the landowner here in La Victoria),” Cabanos said.
The security situation is also considered in the string operation.
Captain Israel Ranario, the head of the NGCP flight operations, said the security situation in the area is not a problem in this sling operation.
“The sling operation itself is hard but with the help of the ground personnel and linemen our work in the air became easier like the preparation in the ground security, preparation of the steel post and fuel requirements. The weather condition today is also cooperating. The only risk we have is the actual haul,” Ranario said.
The steel poles weigh around 500 kilograms. The top portion weighs 231 kilograms while the bottom portion is 268 kilograms. The top and the bottom portion is transported separately.
For this repair works, the NGCP uses 50 footer-steel poles. (davaotoday.com)