Design and Implementation of a Computerized Quality Control System for a Manufacturing Organization

Design and Implementation of a Computerized Quality Control System for a Manufacturing Organization


The purpose of the study is to computerize quality control system for manufacturing organization (A case study of S.E.D.I Enugu) and to develop a computer package whereby the techniques observed from the manual method can be improved on. It is known fact that the manual method of quality control system in production has been associated with lots in inaccuracy in quality control and this has lead to early break down of parts when in service. The software with developed will facilitate and enhanced the mode and methods of quality control in spare production of S.E.D.I Enugu.


Table page


Organization of the Work

Table of Content



Background of the study

Statement of the problem

Problems of the study

The purpose of the study


Aims and Objectives

Limitation of the study

Definition of term


Literature Review


Description and Analysis of the existing system

Fact funding methods

Organization structure

Objective of the existing system

Justification of the New system


Design of the new system

Input specification and design

File design

Procedure chart

System flowchart

System requirement



Program design

Program Design


Test Run








A quality control system in production management is a qualitative technique with strong financial implication having direct relationships with production, marketing, purchasing and financial policies. Also, it is a system used in the management of manufacturing held by any organization as it concern addition to, storage and removal from the trading organization with appropriate record keeping. S.E.D.I. Ltd, Enugu as an assembly plant maintains a large amount of stick vehicle spare parts which are imported from any of her vendor, Viz:- MBAG-Mercedes – Benz AG Germany, MBBRAS-Mercedes- Benz Brazil or MBE-Mercedes-Benz Espana for the production line or sales to distributions or authorized agents/dealers. These stocks are held for various reasons among which are:

(a) To ensure unit sufficient goods are available to meet anticipated demand.

(b) To provide a buffer between production processes. This is applicable to work in progress stocks effectively decouple operation.

(c) To meet possible shortages in the future.

All these spare part, which may similar menu by description, varies greatly among themselves depending on the type of model of vehicle using them. Thus, the management and operation of stores functions and the control of stock can only be performed in an efficient manner when there is an appropriate means of upturning and storing information and the facility of the analysis and use of this information. In the light of the above S.E.D.I. Ltd Enugu maintains a visible records system return to as KARDEX, As a prerequisite in any quality control system ANAMCO Ltd maintains a peculiar but unique coding system such that all the numerous spare parts are each uniquely coded and identified for accurate and specific information on them.

The operation of the KARDEX was of ten prove to redundancy or duplication of items when ever there is misstating, it requires a lot of paper work with their possible variation or discrepancies during documentation; it involves, so many people thereby wasting a lot of man hours; increased cost of procurement storage of non-moving or obsolete items leads to customer dissatisfaction due to time wasting and unavailability of information. Thus, the efficiency of the system is greatly depending on human factor and as such accuracy. So, it is an attempt to rectify and modify the above inadequacies that we have decided to develop and implement an integrated computerized stock control system so as to maximize the operation efficiency, ensure customers satisfaction based on quick services, minimize the non-hour requirement involved reduce the running costs, guarantee accuracy and at the same time generate report that assist management in her decision making as it concerns planning organizing and controlling.


Sequel to the recommendation of the fourth (4th) National Development plan in 1975 to increase the number of automobile plants in Nigeria in order to address the problem of transportation a Mercedes Benz plant was chosen. Other reasons for establishing the plant being to

(a) Transfer of technology.

(b) Manufacture and assembly of indigenous man-power training.

(c) Modernization of industrial workers and

(e) Diversification and rapid industrialization of the Nigeria Economy.

MB-S.E.D.I. Ltd, as it is famously known and called means Mercedes-Benz Anambra Motor Manufacturing Company Limited Enugu. The company is strategically located along IBB-Airport Link Road Enugu Industrial Layout Enugu. The pliant is a joint owned by the government and people of the Federal Republic of Nigeria and Daimier-Benz AG of Germany. Their share equity is in the ratio of 60% to Nigeria and 40% to Daimier-Benz AG Germany. Therefore Mercedes-Ben S.E.D.I. Ltd. Enugu was licensed to manufacture Mercedes-Benz commercial vehicle in Nigeria. The company was incorporated in Nigeria as a Private Limited Company.

On the 17th day of January 1997. On the 12th day of May 1978, its foundation stone was laid by Colonel John Atom Kpera then the military Governor of the thin ANAMBRA STATE (NOW, ENUGU and ANAMBRA). Later, on the 8th day of June 1980 Mercedes-Benz ANAMCO LTD, wad commissioned by Alhaji; Shehu Usman Aliju Shangari, then the President Head of State Commander in Chief of the Nigeria Armed forces S.E.D.I. LTDM commenced production officially on January 1981, ever since the n her services work has spread throughout Nigeria. The company uses foreign and local contents in the manufacture of the Mercedes-Benz commercial vehicles.


It is a common knowledge that decision makers in any organization requires, Information to perform the great functions of planning. Therefore, it is necessary to discover an adequate means of making the information available in making everyone concerned. This is because, for decision to be made correctly. The information must be consistent, accurate, time and reliable.

Thus, this work is aimed at developing and implementing an integrated computerized quality control system in production of an automobile firm (Case study S.E.D.I Enugu Nigeria


(1) The problem encountered when carrying out this study are that obtaining this necessary information from the staff of S.E.D.I. was not easy because some of their information are regarded as company secret.

(2) There is competition of the way few pass personal computer, which has DBASE 111, plus application because many students make use of them in missing their project program.

(3) Production of spare part on manual approaches has been very difficult.

(4) Problem of fund a lot of money is been incurred in carry out this project.

(5) There may be inadequate or not existent stock records.

(6) Obsolete items are retained in stock, which makes in difficult for one to know the overall items in stock.


The objectives of this work include the following

(1) To ensure appropriate stock quality control coding with a view to minimizing stock redundancy or duplication inherent in the manual system of quality control system in production.

(2) To ensure operational efficiency thereby maximizing the customer services level with increased accuracy.

(3) To generate consistent accurate timely and reliable reports that consist the management in her decision as it affects the stock and the organization for affective planning, organization and controlling.


Even though that Mercedes-Benz S.E.D.I. Ltd is the case study with her diverse inventories this work is only continued to the administration of spare parts (finished good type of inventory) as it concerns ordering, receipts, sales and reports. Therefore, it excludes the W.I.P work-in-progress) and other forms of quality stock control. It also excludes other automobile firms.


The aims and objectives of this work is that when the system becomes operational, it will:

(1) Permit on-line time data storage and information retrieval.

(2) Save the production time per section and as such ensure customer satisfaction.

(3) Increase the operation efficiency and accuracy

(4) Reduce stock redundancy or duplication inherent in manual system.

(5) Reduce the operational cost.

Copyright © 2021 Author(s) retain the copyright of this article.
This article is published under the terms of the Creative Commons Attribution License 4.0

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