Dear all, we interested in purchasing an estimating, planning/control and management software mainly for EPC projects (Overhead power transmission and distribution). Do any of you have any experience with a commercial package??
Dear all, we are building an overhead line in which the grounding design for each tower is a horizontal wire buried at a depth of 0,7m with a length from 30m to 120m for each tower leg (depends on the soil resistivity of each tower). To determine the soil resistivity the client spec refer us to...
Dear all, we are purchasing 500kV and 230kV line hardware and insulators and our client asked for a Power Arc Test according to their specs. In their specs they define the AC Circuit, number of tests, symmetric current, durations of each tests and the asymmetric ratio. The supplier of the...
Dear all, we are building and overhead power line with guided towers. Because the type soil (see attached file), the foundations for the guides are drilled as per designed. The client had approved the designed, however yesterday, they decided to reject it based on the assumption that they cannot...
Dear all, recently on a doubled circuit (four conductors per phase) 500kV Overhead transmission line that we are building, the splices are been made on the tensioner. Unfortunately, our crew cut the cable 100m longer that it was supposed to and after sagging, the splices were located 22m from...
Dear all
I would like to create tasks on my schedule that represents payment events. The Idea is to have a rough estimated of a cashflow allowing me to easily simulate different scenarios. So far, I thought about using a cost baseline for cost and a second baseline for revenue. Does anybody...
Dear all, I work for a construction company which is defining all managing processes. Nowadays , we define the beginning of a project by the signing of the contract which leaves the preparation of the tender out of the project scope (mostly EPC projects). What I would like to hear is whether or...
Dear all, I need to purchase a megger to measure the resistance to earth on overhead transmission lines. Eventhough initially will be used for a new project I was interested in buyin a HF megger.
Do anyone have any suggestions on a model appropriate for my needs?
Thanks
YJO
Dear collegues,
We are building an overhead powerline (500kV) and recently we started to experiment some problems with the conductor (ACSR). Basically, the conductor is showing a separation between the lairs of aluminum (kind of an bird cage effect) before it reaches the tensioner. To me its...
Dear all
I have one task with an "x" amount of hours, the resource that is capable of performing the task is available 1 unit at the begining and after a certain date, 5 units. I define this availability on the resource sheet, however I am not able to get the autolevelling function to do the...
Our company is beginning the search for an ERP that would allow us to properly control all stages of EPC projects. Our core business is the construction of Over Head Power lines and we usually do 3 -4 projects a year with an average of 500 - 600 mh. Many of the ERP that we have found are not...
Does anyone have an idea of how much could the compaction of the backfill of the counterpoise affect the earthing resistance of a tower (the counterpoise is 50m per leg, 60cm depth)?
