RWSN Resources

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Author Year Downloads Title

Practical Guidelines for the inspection of the Zimbabwe "B" type Bush Pump Geometry and preliminary inspection

Downloads: 105


Author: MORGAN, P.
Year of Publishing: 2012
Publisher: Aquamor Pvt Ltd
Institution:

This new guidelines has been produced to assist those who are examining the quality of manufacture of the “B” type Bush Pump. It should be used alongside the existing Pump Inspection Chart and the longer illustrated manual on inspection of the Pump (pump head and down the hole components). More concise explanations are given and special attention to the main points to look for when examining the pump head and “down the hole” components.

The Blair Pump An update

Downloads: 236


Author: MORGAN, P.
Year of Publishing: 2014
Publisher:
Institution: Aquamor

The Blair Pump is a simple direct action shallow well hand pump. It was first designed in 1976 and developed further at the Blair Research Laboratory in Harare, (formerly Salisbury). The earlier models were heavy duty using 90mm PVC pipe as a cylinder. The maximum lift of these earlier models was 6m. Later in the early 1980’s a lighter duty model was designed at the laboratory for family use. Like the earlier model it was built with “off the shelf” fittings, which could put together by an artisan or in the home. This later model used 40mm PVC as a cylinder. The maximum pipe length for these later models was 12m. A description of its construction was introduced in to the school curriculum at the time. A mass produced version was also manufactured in Zimbabwe in the early 1980’s, using 50mm PVC pipe as a cylinder. These various models were described in detail in Rural Water Supplies and Sanitation.

The Zimbabwe Bucket Pump An update

Downloads: 135


Author: MORGAN, P.
Year of Publishing: 2014
Publisher:
Institution: Aquamor

The “Bucket Pump” is a water lifting device which uses a tubular bucket to raise water from a tubular well – known as a tube well. These wells, usually drilled with a hand auger. They work best in shallow aquifers, where the soil is soft and easy to penetrate. Where conditions are suitable a well can be hand drilled in a few hours, cased with a PVC pipe, which is surrounded by a gravel pack. The pipe ascends through a concrete head-works consisting of an apron and water run-off. The pipe is closed off at the top lid. The tubular buckets were fitted with a non-return valve at the base. At first the tube-buckets were raised on a rope directly by hand. Later models used a windlass system to raise the bucket. Initially these windlass adapted bucket pumps were hand made using treated gum poles as windlass supports. Later the concept was commercialised, which shadowed the earlier work and made the device more expensive.

Hand drilling a shallow tube-well and fitting a simple “Bailer-bucket” in Zimbabwe

Downloads: 175


Author: MORGAN, P.
Year of Publishing: 2014
Publisher: Aquamor Zimbabwe
Institution: Aquamor Zimbabwe

The construction of the lighter duty, simple hand operated drilling rig has been described in another manual and was designed for drilling shallow tube wells in softer soil formations, which occur in some areas of Zimbabwe. Currently the drilling stems extend to a maximum of 12m. Staff members of the Ministry of Health and Child Welfare are familiar with local shallow ground water conditions in Zimbabwe. A depth of 12m is suitable for the use of this simple rig in combination with simple water raising devices like the Bailer-bucket, Bucket Pump and Blair Pump.

Hand drilling a shallow tube-well in Zimbabwe and fitting a simple “Bailer-bucket” for water lifting

Downloads: 76


Author: MORGAN, P.
Year of Publishing: 2015
Publisher: Aquamor
Institution: Aquamor

The construction of the lighter duty, simple hand operated drilling rig has been described in another manual and was designed for drilling shallow tube wells in softer soil formations, which occur in some areas of Zimbabwe. Currently the drilling stems extend to a maximum of 12m. Staff members of the Ministry of Health and Child Welfare are familiar with local shallow ground water conditions in Zimbabwe. A depth of 12m is suitable for the use of this simple rig in combination with simple water raising devices like the “Bailer-Bucket” Pump and Blair Pump.
This manual describes the test drilling of a tube-well in Epworth, near Harare, Zimbabwe and the construction and fitting of a PVC casing and filter mechanism. It also describes the construction of a simple “Bailer-Bucket” pump and the head works at the head of the tube well. Of particular significance is the part played by the family itself by making the water raising device – a tubular bucket fitted with non-return valve and handle. The design of the “pump” is very simple and easily made within the home. The chances of continued operation and maintenance are this considerably improved.

Upgraded Family Wells in Zimbabwe (2012) A study of Upgraded Family Well technology and training

Downloads: 40


Author: Morgan P. & Kanyemba A.
Year of Publishing: 2012
Publisher: Aquamor
Institution:

Several years ago Zimbabwe embarked on a program of upgrading family owned wells. This program was fully endorsed by the GOZ and operated under the MOHCW. The program has been well documented in papers and other publications. This program was based on the fact that for many decades individual families had chosen to upgrade their own wells privately and outside the formal GOZ rural water supply and sanitation program. In the early 1980’s the number of family owned wells in Zimbabwe was estimated to be at least 100 000. Many of these were lined with bricks and had some form of head works. Many were fitted with windlasses – a legacy from the mining industry. The windlass made the bucket easier to lift and also retained the rope or chain in a hygienic position above ground. However the majority of family owned wells were poorly protected and open and were subject to contamination, especially during the rainy season and were also dangerous for children.

Walimi Handpump Hand Book for Water User's

Downloads: 149


Author: MIZRAY, E.C., KAWA, G. M. and K. ERPF
Year of Publishing: 2002
Publisher: RWSN (incl. HTN)
Institution: Skat/Government of Tanzania

This manual is intended to assist all users of the Walimi Handpump, especially for the operations and maintenance of their pump.

Walimi Handpump Specification

Downloads: 86


Author: MIZRAY, E.C., KAWA, G. M. and K. ERPF
Year of Publishing: 2002
Publisher: RWSN (incl. HTN)
Institution: Skat/Government of Tanzania

This manual provides a full specification and technical drawings of the Walimi handpump.

The Walimi Handpump - Manufacturing Guidelines

Downloads: 38


Author: MIZRAY, E.C., KAWA, G. M. and K. ERPF
Year of Publishing: 2002
Publisher: RWSN (incl. HTN)
Institution: Skat/Government of Tanzania

This specification is intended to assist local manufacturers to produce a good quality of Walimi Hanpump.

Principles for Borehole Construction and Rehabilitation in Sierra Leone

Downloads: 391


Author: Ministry of Water Resources of Sierra Leone
Year of Publishing: 2014
Publisher: Ministry of Water Resources of Sierra Leone
Institution: Ministry of Water Resources of Sierra Leone

This document represents the official guidelines of the Government of Sierra Leone on the issue of the construction and rehabilitation of boreholes.

DISCLAIMER: This is a non-RWSN publication and endorsement by RWSN or any of its member organisations should not be inferred.

Technical Guidelines for Construction and Maintenance of Hand Dug Wells Sierra Leone

Downloads: 540


Author: Ministry of Water Resources
Year of Publishing: 2014
Publisher: Ministry of Water Resources, Republic of Sierra Leone
Institution: Ministry of Water Resources

This document represents the official guidelines of the Government of Sierra Leone on the issue of the construction and maintenance of hand dug wells.

This publication is intended for water sector practitioners and managers who coordinate and oversee water supply service delivery. It is the outcome of a partnership between the Ministry of Water Resources, Water and Sanitation Program (WSP), and a number of implementing agencies working in the WASH sector in Sierra Leone.

If this publication can contribute to permanent and lasting water points in Sierra Leone, and better standards of construction, then it will have achieved its purpose.

DISCLAIMER: This is a non-RWSN publication and endorsement by RWSN or any of its member organisations should not be inferred.

India Mark II: 3-D CAD files

Downloads: 318


Author: MILLER, A.
Year of Publishing: 2012
Publisher:
Institution:

This zip file contains 83 shape files for the India Mark handpump. To view the files you will need extract the files using WinZip, or similar, and "SolidWorks e-drawings Viewer" which can be downloaded for free from: http://www.solidworks.com/sw/products/free-cad-software-downloads.htm

The files show a pump in one configuration only, with no deep-well parts and only one mounting option.

To manipulate the files you will need commercial CAD software.

Any use or modification of these files should first get the permission from the author: Andrew Miller (contact via the RWSN Secretariat) and should credit him.

The user assumes responsibility for geometric accuracy and neither the author nor RWSN guarantee this work.

DISCLAIMER: This is a non-RWSN publication and endorsement by RWSN or any of its member organisations should not be inferred.

Building Construction Manuals on Drinking Water Supply. Volume 3:

Downloads: 154


Author: MEULI, C., WEHRLE, K., MULLER, H. and PFIFFNER, H.
Year of Publishing: 2001
Publisher: Skat
Institution:

The aim of this manual is to describe the variety of work as well as to provide a survey of the types of materials used in rural water supply construction.
Some of the materials and their use are only briefly described. This manual refers in many chapters to the existing sourcebook on Appropriate Building Materials, a co-production of SKAT, IT and Gate published in 1988; third revised edition 1993.

Spring Catchment Manuals on Drinking Water Supply. Volume 4:

Downloads: 373


Author: MEULI, C., WEHRLE, K.
Year of Publishing: 2001
Publisher: Skat
Institution:

The purpose of this manual is to present the reader with information on how to build and operate a good spring catchment. However, several thousand technical briefs would be required to cover every possible permutation of the many factors that serve to classify a spring. In practice, no spring is like any other, and therefore guidance in the form of basic principles can only be presented here. The information contained in this manual should be considered and then adapted to suite the specifics of each setting where a spring is located.

Optimising Road Development for Groundwater Recharge and Retention Final Workshop

Downloads: 160


Author: Meta Meta Research / Mekelle University
Year of Publishing: 2014
Publisher: Meta Meta Research
Institution:

This is one of the 15 UPGro Catalyst Projects. This one looked at ways at which roads can be used to improve groundwater recharge in Ethiopia. Below are the presentations from the final project workshop which from this exciting project.

There are also links to some the final reports (filed separately).

DISCLAIMER: This is a non-RWSN publication and endorsement by RWSN or any of its member organisations should not be inferred.

Improving access to safe drinking water: Prospection for low-fluoride sources Brief report presenting main findings - Addis Ababa, August 2014

Downloads: 53


Author: Meta Meta / Addis Ababa University
Year of Publishing: 2014
Publisher: Meta Meta Research
Institution:

This report presents the key findings from the UPGro catalyst project: "Improving access to safe drinking water_prospection for low-fluoride sources Groundwater". It covers the background of natural fluoride levels in groundwater in the Ethiopian Central Rift Valley and looks at some defluoridation interventions, including the use of bone char. The costs, benefits and main findings and lessons are presented.

DISCLAIMER: This is a non-RWSN publication and endorsement by RWSN or any of its member organisations should not be inferred.

UNICEF Hand Pump R&D Project in Ranga Reddy District Andhra Pradesh Concluding Report

Downloads: 35


Author: Meera & Ceiko,
Year of Publishing: 2001
Publisher: Meera & Ceiko
Institution: UNICEF

This Project represents the next generation of systematic development of hand pump components with modern materials under UNICEF’s sponsorship, both intellectually and financially. This Project also establishes the relevance of Ranga Reddy Test Area for hand pumps, where field testing of hand pumps under deep static water table conditions has been undertaken for many years. Hence, the results of this project’s field trials supercede similar work done in the past on similar materials and under similar or more favourable physical conditions.

DISCLAIMER: This is a non-RWSN publication and endorsement by RWSN or any of its member organisations should not be inferred.

India Mark II Redesign 2007-2012 Concept Paper

Downloads: 72


Author: MATTHEWS-FREDERICK, R.
Year of Publishing: 2012
Publisher: unpublished
Institution: Nile Centre for Alternative Technology

The following form the considered conclusions of Rowan Matthews-Frederick after managing a program with Medair, North Sudan in West Darfur which was responsible for installation and maintenance of more than 170 India Mark II hand pumps. Further to this, work has continued in constructing, testing and computer modelling some solutions to hand pump issues with Nile Centre for Alternative Technology (NileCAT). There are many other ideas yet to be pursued that have potential to increase the reliability and ease of maintenance of the hand pumps.
Although the following observations tend to focus on the engineering related issues it is not intended to take away from the importance of the ‘softer’ issues. Please forgive the predominance of using the first person and the occasional ‘royal we’. This is not intended to be a thorough going engineering report. It is born of a diverse experience and desire to provide the basic necessities to the world’s most disadvantaged people.

Rapid Assessments of Capacities of Hand Pump Manufacturers in Zimbabwe

Downloads: 57


Author: MATHUR, S. P. and JONGA, M.
Year of Publishing: 2010
Publisher: UNICEF
Institution:

Government of Zimbabwe standardised in 1989 Bush hand Pump "B" type following years of rigorous trials and modifications. This Hand pump “B” type is now in “Public Domain”. More than 50,000 of these hand pumps are installed mostly in rural areas of Zimbabwe. Rough estimates are that about 40% of them are not functioning.
Repairing these pumps by replacing worn out part is not possible because of interchangeability and pumps manufactured with non standard specifications. One is forced to change the whole pump head unit or the cylinder assembly. UNICEF and other partners are facing challenges in the last few years to procure
hand pumps from lowest bidders that meet the national standard and specifications.

Mozambique Drillers Association Inaugural Meeting Cost Effective Boreholes Newsflash

Downloads: 97


Author: MARCARIO, L.
Year of Publishing: 2008
Publisher: RWSN
Institution: WSP

The Mozambique Drillers Association held its inaugural meeting in August 2008. The event provided a first opportunity for multilateral dialogue at the highest possible level between borehole drilling entrepreneurs, Government of Mozambique (GoM), donors ,civil society organizations and other financing agencies. There were no doubts among members on the need for an association of all drilling professionals to coordinate for a better drilling industry. Presentations and discussions on the second day focused on business and funding opportunities and technology and standards.

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