2nd Anniversary

2 years had passed since the registration of . Due to stranglehold of restrictions in Turkey, I was not able to log into my account and update my site weekly.

Despite all set-backs, monthly page views reached up to 1,500 per month by the help of more than 900 unique visitors.

I hope I won't face any restrictions and will be able to write more entries within following year.

I would like to take the oppurtunity to present my best regards for your support.

Wind Turbine Transportation: Road Transportation


Wind energy is becoming popular and growing as a viable sustainable energy among the other alternatives. However, this developing industry is facing several  challenges. Transportation of wind turbine components is complex and expensive because of the unusual dimensions and weights of turbines.

To reduce risks and cost, pre-planning is crucial.

In this blog entry, I would like to share basics of pre-planning of wind turbine components’ transportation on road ( you can find conventional transportation methods in ) in checklist form.

According to my experience in logistics sector, scope of duties that must be carried during transportation can be considered as:

   1) Getting Weight & Dimension of Wind Turbine Components from the Manufacturer

   2) Choosing Transport Equipments by taking:
        a. Maximum Axle Load
        b. Local Regulations
        c. Weight & Dimensions of Components
into consideration.

   3) Road Survey

   4) Reviewing Transport Equipments after Road Survey to Choose Equipment Best Fit in Project

   5) Preparing Access Roads/Entrances on Site According to Road Survey
        a. Excavation Works to Provide Adequate Curves (inner & outer radius)
        b. Back-filling & Compacting Cable Trenches on Site
        c. Providing Adequate Ground Bearing Capacity
        d. Gradient  (shall not exceed 10%-12%)
        e. Road Camber  (shall not exceed 2%)
        f. Clearance (any overhanging branches, overhead lines shall be removed)

   6) Getting Required Permissions from Local Authorities to Execute Civil Works on Route
        a. Excavation Works to Provide Adequate Curves (inner & outer radius)
        b. Back-filling & Compacting
        c. Checking Gradient and Road Camber on Critical Locations
        d. Checking Height of Overpasses
        e. Checking Bearing Capacity of Bridge

   7) Getting Required Permissions for Transportation

   8) Insurance
        a. Transporters Liability Insurance
        b. Transportation Insurance of the Components

   9) Providing Crane(s) for Loading & Unloading

   10) Lashing/Securing Components onto Trailers According to Instructions Indicated in Manufacturer’s Transportation Manuel

   11) Providing Escort for Critical Components in Terms of Height,Width and Length.

There are many variables lies within topics listed above. For example, there can be several alternative routes for the transportation of components. If it is the case, valuation, time and risk shall be taken into consideration while evaluating different alternatives. Cost-benefit analysis and stage-gate model can be beneficial approaches to come to a decision in terms of choosing the best route.

Content of the checklist can be detailed and approaches which help transportation companies to choose best route can be increased in variety.

Making transportation companies prepare preliminary plan can help investors, not only to reduce risk, but also to save considerable amount of inessential expenditures for transportation.


Project Completion Reports


In these days, I have been working on project completion reports of two wind power plant projects.

In my opinion, Project Completion Reports are not only records about  the past works but they are also a guide for companies for their further projects.
By taking this information into account, I came up with an index as follows:

General Information
-          Project Information: In this section, I had given a brief information about project including the owner of project, main EPC contractor and project location.

-          Project Overview: In this section, information about total capacity, turbine layout, annual production and remarkable dates were given. Some of the remarkable dates are as follows:

o   License Date of the Project
o   Commission Ruling for Extension (if avaliable)
o   Starting Date of Excavation Works
o   Starting Date of Foundation Construction Works
o   Acceptance of High Tension Power Lines
o   Starting Date of Mechanical Installation
o   Starting Date of Electrical Installation Works
o   Temporary Acceptance of Substation and First Energisation
o   Completion Date of Commissioning
o   Govermantal Acceptance

-          Wind Turbine: In this section, I had given detailed information about the turbines used in projects and their sub-components.

-          Main Crane: In this section, I had given detailed information about dimension, weight, configuration and load chart of main crane which was used in wind power plant project. Ground pressure values of main cranes can also be given in this section.

Scope of Contract & Planned Budget

-          Work Definition: In this section, I had given information about main works executed during the project which can be stated as transportation, civil works, mechanical works, electrical works and commissioning works.

-          Subcontractors: In this section, subcontractors were listed under main budget items such as wind turbines, cosultancy, customs clerance, transportation, insurance, wind turbine erection, mechanical and electrical installation, main and access roads/excavation works, substation, foundation and fiberoptic connections.

-          Subcontractor Budget: In this section, planned budget of subcontractors were listed.

-          Loan Summary: In this section, loan summary of project was given.

Project Execution Statics & Actual Schedule

-          Actual Budget: In this section, actual budget of project was listed. Main budget items were designated as:

o    Wind Turbine
o   Substation & Business Premises
o   Power Transmission Lines
o   Main & Access Roads
o   Expropriation & Permits
o   Operational Expenditures.

After giving information about actual budget, planned & actual budgets were compared and deviatons in between were indicated. After comparing these budgets, main expenditure items were listed under budget items.

-          Civil Works: In this section, costs of foundation works, crane pad preparation, main roads and access roads were indicated and volume of excavation and backfilling works were listed in terms of m3.

-          Wind Turbine Installation: In this section, total man-hour spent for the installation of turbines was indicated. Cost of installation works were analysed by taking alternative scenarios into account. Man-hour spent per turbine was designated. On the other hand, effect of windy hours preventing the execution of jobs was calculated in terms of man-hour and cost.

-         Wind Turbine Erection: In this section, cost of wind turbine erection works were analysed by taking alternative scenarios into account. Cost of crane rental was designated. On the other hand, effect of windy hours preventing the execution of jobs was calculated in terms of man-hour and cost.

-          Actual Project Schedule: In this section, tables were prepared for each main WBS including civil works, mechanical installation & erection and electrical installation, also to list starting date and completion date of each project execution items. At the end of each section, cumulative duration including and excluding windy days were indicated and they were compared with ideal durations.

-          Commissioning: In this section, commissioning schedule was shown and exceedance of contractual obligations was indicated.

-          Overview: Total cumulative project duration including and excluding windy days was listed in this section. By taking this information into account, total cumulative duration per turbine was calculated both including and excluding windy days.

Project Execution Photographs

In this section, photographs showing each project execution step can be found.

Content of Project Completion Report can be increased in variety according to needs and organizational structure of a company. For, we had our own crane to execute mechanical erection and our own team to execute wind turbine mechanical & electrical installation works, I had included sections analysing alternative scenarios (what if another company was awarded as mechanical erection, installation & electrical installation contractor?) in terms of cost and project duration.