Report on Power Tower Construction: Methods, Risks & Timeline

This report provides a detailed overview of the construction of a power tower, a crucial component of solar generating systems. It discusses various methodologies, including the types of cranes used (luffing, hammerhead, external climbing, and internal climbing cranes) and the importance of managing long lead items to avoid project delays. The report estimates a two-year construction timeline for a reinforced concrete power tower, highlighting key activities such as excavation, pilling, and superstructure construction. It also addresses potential risks and hazards involved in construction, such as scaffolding accidents, stairway slips, trench collapses, and crane-related injuries, emphasizing the importance of safety measures and proper inspections. The report concludes by underscoring the significance of solar generating systems and the need for strict supervision during construction to prevent casualties and ensure the use of appropriate equipment.

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CONSTRUCTION OF THE POWER TOWER
By Name
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Institution
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ABSTRACT
Solar generating system is a very important structure in a given area. The key component of this
system is the power tower that fitted with latest technology in mechanical systems and control
systems that enables the optimal energy performance. The construction is done under the
supervision of the required personnel. Fatalities and injuries should be avoided at all cost. The
estimated time for the construction should be 2 year (Caihao, 2011).
METHODOLOGY.
Types of the cranes used in the construction.
Luffing
 This crane is mounted in the machine and consist of A frame and a boom. It is the best
suitable in the areas that are densely populated.
 This kind of crane has the following advantages.
 Speed that is variable has more advanced hoisting winch
 The power that is required by this kind of crane is less, thus, energy efficiency.
 The maintenance cost reduced
 It produces less noise hence no pollution into the environment (Jianhui, 2001).

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Hammerhead
This is a type of crane that aids in the movement of the load horizontally. This therefore,
improves the efficiency of the load movement. Due to the long heel section it comes with the site
specific restrictions (Conlin, 2007)
Advantages
 Fitted with variable that has more advanced hoisting winch
 The power that is required by this kind of crane is less, thus, energy efficiency.
 The maintenance cost is reduced
 It produces less noise hence no pollution into the environment.

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External climbing
This is a crane that is tied through specific ties and is connected to the building(Lewis,2016).

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Internal climbing crane
There cranes that are installed through specific steel ties and they are installed inside the
building. This type of installation is based on the proper site restrictions.

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Long lead item
These are components that are used in the construction but takes long time to be acquired.
Normally, before making order for these items there should be shop drawings and submittal
approval that is made formally. There are other delays that are caused due this and that might
stop the actual ordering of the products. Identification of the items is based on the experience.
Some of the elements that are long term items are like; diffusers, ceiling amongst others, and the
contractors that are more experienced should be able to identify these items thereby expediting
their purchase, the approval and faster ordering for the items. There could a tremendous problem
on construction project when there is lack of the specific components that are required therefore,
proper management of the procurement schedule is more important in the maintaining of the
work flow successfully (Yang, 2009).

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Estimation of the time duration to build reinforced concrete power tower.
An estimation of about 25000m3 of concrete was used in the building of the foundation that
contained concrete and steel. This construction would take about 2 years. If the building of this
tower started in year 2018 then it would take about 2 years to be completed. This implies that
there should more skilled engineers for about 10 engineers that should be involved in the project
activities and accompanied by the on-site technicians.
Cladding at the exterior part begun on the year 2019 December and was completed
December .on December 2018, reinforced concrete core wall was pumped by 50MPa concrete
from ground level.
The table below shows the estimated construction time line for the power tower.
YEAR ACTIVITIES
JANUARY 2018 START OF EXCAVATION
APRIL 2018 START OF PILLING
DECEMBER 2018 START OF SUPERSTRUCTURES
JANUARY 2019 LEVEL 20 WAS OBTAINED
MARCH 2019 LEVEL 40 OBTAINED
AUGUST 2019 LEVEL 80 REACHED
DECEMBER 2019 COMPLETION OF THE CONSTRUCTION
Risk and hazards involved during construction.
Scaffolding

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If there are improper erections of the scaffolds they can lead to the injuries to the person using
them. This is one of the most use instruments during construction. The preparation of the
scaffold should be made in such a way that can support themselves and other four time
maximum load. Erecting of this scaffold should be done on the foot that is solid. The objects that
are not stable should not be used in the supporting of the scaffold. To avoid more injuries the
inspection of the scaffolding must be inspected by the competent personnel before any shifting is
done to ensure proper tightness of all the connection (Toyomura, 2010).
Stairways
The major source of the injuries and fatalities among the working in the construction site, are the
slips, strips and walkways in the stairways. The correction of the slippery on the stairways
should be done immediately once they occur.
Trenching
The collapse34 of the trench might lead to the injuries of the workers. For one to be protected
from the injuries from the trench, one should not enter any unprotected trenches. For the deep
trenches there should be use of protective system. For the trenches that do not exceed 230 feet,
shoring should be done to protect workers by installing support that helps to prevent movement
of the soil.
Cranes.
Injuries that may occur when using the crane are due to lack of inspection on the crane to be
used. These injuries normally occur when worker stuck by an overhead load or if they are caught
on the wings of the crane. When there is contact between the load line of the crane and the

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overhead power line there are a lot of the fatalities that normally occurs.to prevent this injuries
and deaths, crane controls should be checked properly before use. The weight that the load
should lift should be known and the load should not exceed the required load that should be
lifted by the crane. The effectiveness of the brake system should be check by allowing the raise
of the load a few inches (Tsoutsos, 2015).
CONCLUSION
Solar generating system is very importance source of power in the society. The construction used
be done under the strict observation and supervision of the required personnel. Proper care
should be taken to avoid casualties and death and proper cranes should be identified for the use
in specific areas (Haaf, 2015).

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REFERENCES
Caihao, L. and Xianzhong, D., 2011. Distributed generation and its impact on power system [J].
Automation of Electric Power Systems, 12, pp.53-56.
Haaf, W., Friedrich, K., Mayr, G. and Schlaich, J., 2015. Solar chimneys part I: principle and
construction of the pilot plant in Manzanares. International Journal of Solar Energy, 2(1), pp.3-
20.
Jianhui, S., Shijie, Y., Wei, Z., Minda, W., Yuliang, S. and Huiruo, H., 2001. Investigation on
engineering analytical model of silicon solar cells [J]. Acta Energiae Solaris Sinica, 4(22),
pp.409-412.
Conlin, K.L. and Cantrell, M.P., SOLAR SIGNAGE Inc, 2007. Modular solar generating
system. U.S. Patent 4,718,185.
Lewis, N.S. and Nocera, D.G., 2016. Powering the planet: Chemical challenges in solar energy
utilization. Proceedings of the National Academy of Sciences, 103(43), pp.15729-15735.
Yang, H., Wei, Z. and Chengzhi, L., 2009. Optimal design and techno-economic analysis of a
hybrid solar–wind power generation system. Applied Energy, 86(2), pp.163-169.
Toyomura, F., Fujisaki, T., Nagao, Y. and Itoyama, S., Canon KK, 2010. Solar cell module,
solar cell array having the module, power generation apparatus using the array, and inspection
method and construction method of the apparatus. U.S. Patent 6,093,884.
Tsoutsos, T., Frantzeskaki, N. and Gekas, V., 2015. Environmental impacts from the solar
energy technologies. Energy Policy, 33(3), pp.289-296.
Winter, C.J., Sizmann, R.L. and Vant-Hull, L.L. eds., 2012. Solar power plants: fundamentals,
technology, systems, economics. Springer Science & Business Media.

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