Welcome to part-1 of a 4-part series concerning the drilling and equipping of boreholes. We shall cover the entire process from having the site survey to commissioning of the borehole.
A borehole is a narrow shaft bored into the Earth’s crust in order to locate gas, water, oil or for other purposes. Here, we shall limit our scope to water.
Did you know that the deepest borehole on Earth is the Kola Superdeep Borehole in Russia?
Typical borehole depths in Kenya vary according to area and hydrogeology. E.g. in Nairobi, Karen, typical borehole depth is 400m and in Embakasi, 250m.
Before embarking on drilling a borehole, it’s important to note the items that you may require. In Kenya, you will require 3-documents
The contractor will be required to have been registered fully with National Construction Authority (NCA).
The Hydrological survey report is obtained from a registered hydrologist.
With this information, you can approach a Drilling Contractor to do the actual drilling for you.
Once the borehole has been drilled, the driller will issue a Borehole Completion Record (BCR) from WRMA that contains important information concerning that borehole. This information can then be shared with us so that we can do a proposal for the most suitable equipment.
The Borehole Completion Record has information such as
Other information that the borehole owner will need to avail is:-
The above information will help us get the appropriate cable length and pipe length. The pipe length and diameter are important for getting the frictional head loss which are an important component of the Total Dynamic Head, required for the specification of suitable equipment.
With this information, we’re ready to do a borehole equipping proposal for you.
In our part two, we shall cover the borehole equipping process and what you need to know. Kindly contact us if you need referrals about a hydrogeologist or a drilling contractor by clicking here.
Credits – Peter Munyoki, This email address is being protected from spambots. You need JavaScript enabled to view it.
The AFWA 2016 Congress took place on the 22nd - 25th of February at the KICC in Nairobi, Kenya. The African Water Association (AfWA) is a self-governing non-profit organization which aims to cover all facets of the water cycle.
The group's mission is to serve as a continental network for water professionals and to advancing standards and best practices in sustainable water and sanitation management.
The African Water Association (AfWA), formerly known as Union of African Water Suppliers (former UAWS) is a professional association of organizations, utilities and operators working in the water, sanitation and environment related sector in Africa. Since its creation in February 1980, its main objective has been to develop the professional capacities of its members in order to achieve its vision regarding the access to drinking water for all Africans.
The AFWA has more than 100 member utilities in over 40 countries in Africa, and its head office is located in Abidjan, Cote d’Ivoire.
Davis & Shirtliff was among be among the exhibitors at the conference. Below is a gallery of some photographs taken during the event. Click on a thumbnail to view a bigger size of the photo.
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