Introduction

You have been introduced to lean manufacturing. Now you will learn about quality control (QC) in manufacturing. QC is the process of ensuring that products meet defined quality standards and specifications before they reach customers. It involves systematic inspection, testing, and corrective actions to identify and eliminate defects, ensuring consistency and reliability in production. Lack of quality control leads to defects, safety risks, customer dissatisfaction, recalls, increased costs, and damage to brand reputation.

Objectives

Quality Control

One principal responsibility for quality control/quality assurance (QC/QA) departments is keeping track of any issues involving the quality, either as raw material coming into the factory, work that is in process (WIP), and finished goods. Often if there is an issue a hold will be put in place to prevent anything with a quality issue from being shipped and make its way to the customer. Typically material and goods are identified and traced with a lot number. If a customer has an issue, QC/QA is responsible for investigating that issue as well.

When a hold is in place there is a record of the hold, with basic information about the lot, date, quantity and usually category and type. Most QA/QC departments will include much more information about the hold. Below is a simple Quality Hold log that contains a short history of the holds.

 

Example of a Hold Log
 Hold Type Lot Quantity Date  Hold Category
Raw Material BD7799206 60 2/3/2024 Pest
Raw Material BD6861181 5 2/4/2024 Packaging
Finished Goods LU6817536 39 2/5/2024 Foreign Material
Finished Goods LU6100983 57 2/5/2024 Allergen Cross Contamination
Finished Goods LU862569 86 2/7/2024 Allergen Cross Cont.
Finished Goods LU3101156 19 2/8/2024 Allergen Cross Contamination
WIP LUW2553913 35 2/8/2024 Allergen Cross Contamination
Finished Goods LU7642730 70 2/8/2024 Quality Defect