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Field Reliability of Deep Tubewells for Irrigation in Bangladesh

A.T.M. Ziauddin
Bangladesh Agricultural University, Mymensingh, Bangladesh

M.D. Hussain
Bangladesh Agricultural University, Mymensingh, Bangladesh

M.M. Rahman
Department of Agricultural Finance Bangladesh Agricultural University, Mymensingh, Bangladesh

Abstract/ Executive Summary:

The concept of reliability and its application to agricultural machinery are reviewed. Methods of estimating the reliability parameter to deep tubewells for irrigation are discussed. The method uses field data for estimation of parameter values for the reliability function. The weibul failure model is used to represent the reliability function for deep tubewell. Reliability of an agricultural machine, such as deep tubewell, is of help to farmers in purchasing and to manufacturers in producing more reliable machines.

Keywords: Deep Tubewell, Irrigation, Farm machinery, Performance

Location: Mymensingh and Muktagasa

Start Date:

End Date:

Program Area: Farm Mechanization

Non-commodity: Efficiency

Objectives:

1. To review reliability theory and its application to arm machinery.

2. To develop a reliability model for deep tubewell and

3. To provide knowledge to potential users regarding the field level performance of deep tubewell.

Methodology:

There are many tupes of failure distribution in use. The Exponential and the Weibull Failure models are commonly used in reliability study of farm machineries. The choice of a distribution depends on the characteristic failure rates. The Weibull failure model is used here to study the reliability of deep tubewells for irrigation. The deep tubewell failure data were gathered from 15 similar deep tubwell operating sites near Mymensingh and Muktagasa by conducting surveys among the users. The time of failures of different components was recorded under actual operation conditions and hence the time between failures was calculated. A computer programme was developed in BASIC for estimation of the Weibull parameters.

Source of Information: Bangladesh J. Sci. Res. 12 (1): 69-75, 1994, (June)

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The finding of the present study is prior information on machine reliability may reduce the opportunity time and cost of repair work. Furthermore, sufficient spare parts may be stocked to minimize time lost during peak hours. Machine reliability helps in better planning of farming operation. The research institutes should carry out field reliability study programme of machine manufactured by a particular firm. Therefore, guidance can be provided to the farmers in purchasing more reliable machines; and manufacturer, in producing more reliable machine.

Knowledge Management: Journal