"additional installation" is correct and usable in written English.
You can use it to describe a process in which an extra component is added or constructed, such as in the sentence: "The contractor is responsible for all additional installations required for the project."
"It doesn't make sense to withdraw the two initial launchers which had already been deployed and installed, but additional installation will be decided after the environmental impact assessment is over," a South Korean administration official told reporters.
No additional installation of special apparatus is required.
Since 1997 the European incoherent scatter radar facility EISCAT has an additional installation on Svalbard and has been providing electron density data nearly continuously ever since.
However, in these systems, additional installation time and cost is required to constrain the tubes and prevent their splashing under impact loadings.
Other solutions include burner replacement or additional installation, but these options are more complex from an engineering and technical point of view.
Keyspan Energy, for example, is now offering new customers their choice of $700, a free gas boiler or interest-free financing on the boiler and the additional installation costs.
The company has also decided to offer modest license discounts on additional installations for home and small-business users.
The new base is frequently cited in the Pentagon report along with wider ambitions for additional installations.
Another factor that limits any significant increase in hydroelectric power production is the scarcity of suitable sites for additional installations except in certain regions of the world.
His loftiest accomplishment, the small piece that was carried to the International Space Station in January, led to additional installations at European Space Agency facilities across the Continent.
Within this context, a combined geophysical investigation was carried out in a place near Keratea City to find out whether there are additional installations apart from those that have already been revealed in the immediate area.
