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FITTER - CITS

LESSON 16: Introduction To Inspection & Quality Control

Objectives

At the end of this lesson you shall be able to
• state the need and importance of inspection in our field or industries
• state the stages of inspection
• state the purpose of quality control and its concepts.

Inspection And Its Importance

Inspection is part of quality- inspection is the checking, verification of raw material, in-process, semi-finished or
finished components. It is the first step to distinguish between accepted or rejected components.

• Inspection is the most common method of attaining standardization, uniformity, and quality of workmanship.
It is the cost art of controlling the product quality after comparison with the established standards and
specifications.

• It is the function of quality control. If the said item does not fall within the zone of acceptability it will be rejected
and the corrective measures will be applied to see that the items in future conform to specified standards.
• An inspection is an indispensable tool of the modern manufacturing process. It helps to control quality, reduces
manufacturing costs, eliminates scrap losses, and assignable causes of defective work.
Inspection basically involves:
1 Interpretation of specifications/ drawings.

2 Measurement of dimensions or other related parameters.
3 Selection of proper instruments, gauges.
4 Selection of units of measurements.
5 Comparison between specified and measured values.

6 Based on the act of comparison proper decisions to be taken.
Inspection is the first and basic act to towards achieving the quality defined from customer’s requirements, hence
inspection is part of quality.

Objectives of Inspection:
1 To collect information regarding the performance of the product with established standards for the use of
engineering production, purchasing, and quality control, etc.

2 To sort out the poor quality of manufactured products and thus to maintain standards.
3 To establish and increase their reputation by protecting customers from receiving poor quality products.
4 Detect the source of weakness and failure in the finished products and thus check the work of the designer.
Need of Inspection in Industry:
Needs of the inspection in manufacturing:-

1 To ensure that the part, material, or component confirms the established standard.
2 To meet the interchangeability of the manufacturer.
3 To maintain customer relationships by ensuring that no faulty product reaches the customer.

4 Provide the means of finding out shortcomings in manufacture.

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CITS : CG & M - Fitter - Lesson 15