Eugene Water & Electric Board (EWEB)’s Post

I was very pessimisstic to OHTL construction by developer such as 345kV overhead transmission lines becuase it is pretty challenging to build them without delay thanks to strong opposition from a handful of vocal residents who feel invisible impacts of electromagnetic field from transmission lines. When I worked for local utility, KEPCO, most OHTL projects experienced significant delays, even underground cable projects. It is chronic. One day, my KEPCO friend advised me to seek the capable EPC company. There is a successful case that the 345kV transmission line project was finished within 2 years. Right away, I searched for the project and extracted the company name, SEAN ENC which specializes in OHTL construction. I became very excited to find a solution to the interconnection lines. However, when I contacted that company, I was told that it has already multiple projects and and it wouldn't seek another project at this moment. The success factors are like this 1. Hire a good EPC company which has expertise in T/L construction. 2. Develop the optimum transmission route. 3. Take care of village leaders by contributing to local community. When it comes to costs, it was triple times more expensive than KEPCO standard construction cost. However, it saved much time. Time is money. I hate uncertainties. In this perspective, this can be a good solution.

There are some common things that aren’t considered by those outside of the Underground Electric Utility profession when it comes to manhole and duct systems for Distribution. This is especially true if the infrastructure is in a congested urban environment. This could be professionals in other industries, Town/City officials and even sometimes employees in the industry who are only exposed to Overhead infrastructure. This is just a few: “You can lay the duct bank right on top of the _______” On top of the 60-year-old water main? On top of the Natural gas line? There are accepted clearances between infrastructure. Clearances are maintained for many reasons. Some of which include avoiding damage to the other party’s infrastructure, access for maintenance/upgrades, future expansion, demarcation between facilities and of course safety. There are exceptions but the decision to reduce clearances need to be carefully weighed and all parties involved need to agree.   “If the manhole and duct system fits in the selected path then all is good.” We can't just pick an available path down "Main Street" with no regard to distance and bending radii from point A to point B and call it good. We are not transporting a fluid like water or natural gas (at least on purpose…). Conduit in the electric system provides the path for the electric cable to be pulled through. The path will affect pulling forces and sidewall pressures exerted on the cable during the cable pulling process. If these forces aren't kept below certain thresholds, then the cable can be damaged enough to reduce its life or in extreme circumstances get stuck in the conduit (not emerge from the other end) or break completely.   “If the pulling crew can get the cable pulled through the conduit, then the cable will work.” This is related to the always problematic, "I can get it through the pipe" statement from the cable pulling crew. Forcing the cable can cause damage. If it doesn’t get stuck or break, there can still be damage that will probably show up when tested or energized. If it isn’t immediately obvious because the breakers fail to close permanently then the damage may reduce the life of the cable. It may not fail tomorrow or next week, but it will fail prematurely. Do you have any????

Why strata corporations should comply with Electrical Planning Reports:

More news on the major underground transmission and distribution substation. This one is complete with a rendering. The effort to lead the engineering has been huge and has required that I combine the ability to build a team to manage and foresee the needs of engineering skills across multiple disciplines, participate in complex business transactions, regulatory proceedings and public relations efforts. This underscores my ability to be a thought leader, and a driver of transformative initiatives particularly in the field of infrastructure engineering.

Elevated Rooftop PV Mounting Structures demand precise column load calculations to endure intense wind forces. It is crucial to calculate ballast and slab loads accurately, following IS:875 and BRE-Digest 489 standards. Access the spreadsheet for calculations here: https://lnkd.in/dkxdgHfC. #PVstructures #Engineering #WindForces #StructuralCalculations

In just a few simple steps explained in the video below, our team here at Leading Engineering can help you obtain your electrical planning report, ensuring your strata is ready and compliant. Learn more at https://lnkd.in/gEh9-niS

What are the main factors that we should keep in mind during construction of AIS substation? #Post 13/14 In Continuation of #Post 12/14 12-Documentation and As-Built Records The 12th point, "Documentation and As-Built Records," emphasizes the importance of maintaining accurate and comprehensive documentation throughout the design, construction, testing, and commissioning phases of an Air-Insulated Substation (AIS). Proper documentation and as-built records are crucial for future reference, maintenance, and potential expansions or modifications. #electricalengineer #powersystem #substation #transmissionline #energy

12 High Voltage Cable Construction Techniques Utilized Globally This #technical #article discusses twelve different #methods for laying high-voltage cables. Out of these, four are deemed #conventional and eight are considered progressive. Various utilities and companies worldwide are utilizing these methods to varying extents. Four of the twelve methods are considered more conventional. This is primarily because the vast majority of companies worldwide depend on at least one of these tools for constructing and laying #highvoltage #cables. Their affordability, ease of use, and accessibility to resources (both materials and equipment), along with competent business owners, have made them widely used for decades... Read more: https://flip.it/EkdbTg

New rule allows new transmission line construction streamlined.

Why strata corporations should comply with Electrical Planning Reports: