Hiren Kanani

Hiren Kanani

June 18, 2023 14 minutes to read

Inspection Process in Manufacturing

Inspection Process in Manufacturing

Every day thousands of products are manufactured in a factory. But how do you ensure that each and every product maintains quality or not? That’s where the inspection process comes in.

Inspection plays a crucial role in the manufacturing industry, ensuring quality, effectiveness, and customer satisfaction. Inspection is the process of checking products to make sure that they meet the required standards.

However, many manufacturers are not aware of the right inspection process in manufacturing.

In that case, this detailed guide will explore the importance of inspection in manufacturing, its types, process and provide insights into conducting effective inspections to ensure procurement success!

What is Inspection in Manufacturing?

Inspection in manufacturing is the process of examining and evaluating products or components at various stages, such as incoming, in-process, and final inspection, to ensure they meet the required quality standards and specifications. It involves visual checks, measurements, and testing to identify and correct defects, maintain product quality, and prevent faulty items from reaching the market, ensuring customer satisfaction and safety. Effective inspections also provide valuable feedback for process improvement and optimization in the manufacturing industry.

Importance of Inspection in Industrial Manufacturing

Inspections in industrial manufacturing are essential to ensure consistent product quality. Because poor quality leads to lower customer satisfaction, higher costs for rework, and lower revenues. And due to this reason, most of the time is spent on solving issues with the product or service rather than creating new ones. Hence, it is crucial to prioritize inspections in order to identify and address any quality concerns at an early stage, ensuring high-quality goods are delivered to customers.

The inspection process in manufacturing offers the following advantages:

  • Helps Avoid Recalls and Reputational Damage
  • Ensure that your products are safe for transit
  • Recognize Even Small Problems Immediately
  • Be sure of the product quality
  • Reduce the risk level

The Inspection Process

The inspection process in manufacturing encompasses several key steps: defining standards, sampling, inspection methods, reporting, and taking appropriate actions. Let’s delve into each of these aspects:

1. Defining Standards 

The manufacturing business sets specific quality standards and specifications for the products it produces. These standards encompass various aspects, including dimensions, materials, performance criteria, safety requirements, and any other relevant characteristics that define the product’s quality and functionality.

2. Sampling

Due to the volume of products manufactured, it is often impractical to inspect every single item. Instead, a well-designed sampling plan is used, where a representative subset of the products is selected for inspection. This statistical approach ensures that the sampled products accurately represent the entire production batch or lot.

3.  Inspection Methods 

The business employs various inspection methods suitable for its products. Visual inspection plays a crucial role in assessing the product’s appearance and overall condition. Measurement using precise and calibrated tools ensures that critical dimensions align with the established standards. For more complex products, non-destructive testing techniques, such as ultrasound or X-ray, may be used to identify internal defects without damaging the items.

4. Reporting and actions

During the inspection process in a manufacturing business, qualified personnel thoroughly document their findings, recording measurements, detecting defects or deviations, and conducting a comprehensive evaluation of the product’s quality. This results in an inspection report, serving as a valuable record of the product’s conformity to defined standards. Based on the inspection results, appropriate actions are taken: products meeting established standards are approved for further processing and distribution, while minor defects undergo rework or repair to meet quality requirements. Conversely, if significant issues arise or products fail to meet standards, the entire batch may be rejected, and corrective measures are implemented to prevent similar problems in future production runs.

Types of Inspection Process in Manufacturing

Inspections in the manufacturing industry are carried out to identify potential issues or defects. There are mainly three types are inspections conducted in manufacturing to ensure a consistent production process.

Pre-production Inspection

Pre-production inspections are essential to lower the quality risks by inspecting inputs prior to the production stage. A skilled inspector can collect and examine a few samples to ensure that the raw materials meet specific standards. In addition, create a checklist and customize them as per your needs and requirements; this will assist in streamlining the inspection procedures.

In-process inspection

In-process inspection occurs when the first product is examined for compliance. If any kind of issue is discovered at this stage, the factory can immediately take some corrective actions and avoid delays. Addressing production concerns early on can save time and resources in the long run.

Final Inspection

Final inspection, also referred to as pre-shipment inspection, involves counting the total number of items and selecting samples of finished products at random. This inspection occurs once all the products have been completed and are ready for distribution, providing highly dependable outcomes.

7 Steps to Perform Inspection in Industrial Manufacturing

Now that we are familiar with the different types of inspections in manufacturing let’s explore the steps involved in the inspection process in manufacturing, which covers every step in detail.

Step –1 Establish Manufacturing Inspection Standards & Criteria

To start, it is essential to create norms and requirements for the inspection process in manufacturing. This crucial step defines the various criteria, such as the product’s size, material properties, product functionality, and other critical details. These standards are very crucial for sustaining high-quality standards throughout the manufacturing production process.

Step-2 Describe Inspection Points

For an organized approach, it is essential to specify the inspection location throughout the production process where inspections must take place. These include various stages, including raw materials, inspections carried out during the production process, and the final inspections.

Raw Material Inspections: This step involves preparing the products before mass production begins. The main purpose is to examine the raw materials, parts, or components that will be utilized during the manufacturing process. Moreover, arrange them in an organized way. This step helps in identifying the problems or changes at an early stage, thus reducing the risk of defects in the finished product.

In-process Inspection: Also known as during-production inspection, this step involves checking the product quality to ensure that all materials used are according to product standards. This may involve inspecting products, raw materials or performing random tests at different production stages.

Moreover, it enables timely detection of any flaws that might occur during the production process and solving them before proceeding to the next manufacturing stage.

Final Inspection: In order to ensure that the final goods satisfy the stated quality standards and criteria, a thorough evaluation of the finished items is required. This is a crucial step to make sure that the goods are free of flaws, completely functioning, and ready for distribution. Generally, the final inspection involves testing, measurement, and visual inspection to find any possible flaws and defects. After completion of the final inspection, products are given for packaging, labeling, and shipping.

Through these inspection points, organizations can create a strong quality assurance that ensures high-quality products. This comprehensive approach to inspections helps manufacturers quickly detect and address problems, minimizing waste and increasing worker productivity.

Step -3 Implement Digital Inspection Checklist

It is crucial to know exactly what to look for before conducting the inspection. An inspection checklist specially designed for business can help inspectors stay focused and ensure complete details regarding the manufacturing process. Organize the checklist into sections such as equipment safety, fall protection, and accident risk in order to streamline the procedure and increase efficiency.

In addition, make sure the checklist includes not only the physical elements like equipment condition but also the members involved in the inspection. Through a checklist, inspectors will not miss out on any important information. Inspection checklists can also help increase first-time fix rates by providing clear, accurate, and up-to-date information to technicians.

Step -4 Conduct the Inspection

Once a thorough plan has been established, it is time to conduct the inspection. The inspectors must thoroughly observe all work procedures and tools in order to spot any potential hazards. This inspection process in manufacturing includes cracks, chips, and other defects. One of the ways to effectively detect flaws is through visual inspection. Through remote visual inspection, technicians can connect with the experts and solve issues in real-time.

Step-5 Record Inspection Data

After conducting an inspection, record manufacturing inspection data using digital work instruction software. Digital tools streamline the process, reduce errors, and ensure consistency. Moreover, workers get access to configure workflows, secure knowledge repositories, digitize checklists, and guided troubleshooting. Manufacturers may enhance product quality and optimize their production processes by examining inspection data.

Step-6 Implement Corrective Measures

The entire inspection procedure is meaningless if you don’t use the data collected during inspections to prevent risk. Hence, it is crucial to take corrective actions when any defects are found during the inspection. These may include repair & maintenance, rework, or manufacturing process modifications.

While creating an inspection report, include specific actions to address the issues. Moreover, add safety guidelines to the inspection checklist. As some of the operations may involve risks, it is essential to consider safety measures.

For example, the safety precautions should be mentioned as follows:

  • Use the right equipment
  • Wear safety gloves for protection against cuts, heat, chemicals, etc.
  • Wear smart glasses for handsfree workflow execution support

By implementing these measures, you may effectively use the inspection data to reduce risks and enhance worker safety.

Step-7 Conduct Regular Follow-ups

Plan regular follow-ups to ensure your safety inspection results are being implemented. After the suggested action deadlines have passed, check in with the appropriate team members for an update to see if the solution is still effective.

If a risk still exists despite taking action, it’s possible that the main cause of the problem was not fixed, demanding more investigation. Do not forget that this is an ongoing procedure and cannot be neglected once the inspection is complete.

And to help you out in this process and make it more simpler for you, here is a brief on the Quality control inspection checklist. By implementing an effective quality control inspection checklist, manufacturers can ensure that their products meet the necessary quality standards.

What is a Quality Control Inspection Checklist

A quality control checklist, often known as an inspection checklist, is an organized and step-by-step guide that demonstrates essential product requirements. Its main purpose is to make sure that the product is according to the needs and requirements. Manufacturers often employ several checklists at various levels of production to identify any issues as they occur.

Manufacturers can use these checklists to determine the specific requirements that a particular part or product should meet. They can compare those specifications to the product being inspected and remove the item that is not as per standard measures from the production process.

Benefits of Using an Inspection Checklist in Manufacturing

As stated previously, the quality inspection checklist plays an essential role in the manufacturing inspection process. It ensures product quality and prevents from generating defective outputs. Below are some benefits of using a quality control inspection checklist for manufacturing.

1. Eliminate the Use of Paper-based Instructions

Adopting digital inspection checklists assists organizations to eliminate the traditional paper-based method, providing a digital transformation. This transformation saves a lot of employees’ time, as workers have no longer to go through the memos and do their tasks.

In addition, digital checklists increase productivity by providing step-by-step instructions that need to be completed, allowing workers to prioritize and complete their tasks effectively.

2. Identifies Defects and Reduce Waste

Implementing a quality control checklist for the production process allows operators to more easily and quickly identify the errors which are affecting stages of the manufacturing process.

By doing so, the occurrence of additional wastage is minimized and boosts the effectiveness of the entire production process.

3. Drive Continuous Improvement

With a quality control checklist, operators can immediately identify errors as they arise in real-time. This allows operators to identify issues easily and take corrective measures to stop them from occurring again.

As a result, this systematic approach reduces wastage, increases production effectiveness, and fosters a culture of continuous improvement within the organization. This enables businesses to effectively adapt to the ever-changing needs and remain competitive.

4. Access the Checklist at Any time, Anywhere

Digital checklists can be accessed on any device at any time and anywhere. This flexibility allows the operators to stay informed and organized, despite their physical location. Through this, workers can effectively manage all their tasks and keep track of their progress.

5. Effective Communication Across Departments

Having a quality control digital checklist allows seamless collaboration among team members and different departments. The step-by-step SOPs and integrated quality control help in the easy streamlining of operations, ultimately saving a lot of time and cost in the long run.

6. Hassle-free Updates

With a digital inspection checklist, you can add and manage your SOPs in a systematic way to provide work instructions to your remote teams and help them operate on new technology without much hassle.

How to Create Manufacturing Inspection Checklist

It takes a lot of planning to create a quality inspection checklist that is effective. Follow the steps below to build a checklist that streamlines your manufacturing inspection process.

1. Identify the Inspection Objectives

Start by identifying the inspection objectives, such as determining the specific areas, processes, or products that should be covered in the checklist. This can include machinery, equipment, materials, storage areas, safety measures, and any other inspection checklist tailored specifically to manufacturing operations.

2. Determine Inspection Checklist Format

After identifying the inspection checklist, determine the format of your checklist based on your requirements. Ensure that you choose a simple checklist format that is easy to understand and user-friendly. In addition, review the checkpoints in the checklist and eliminate those points which are not relevant to your organization or industry.

3. Breakdown the Task into Two or More Sub-tasks

It is suggested to break down the tasks into two or more sub-tasks that need to be checked. All important factors should be addressed in these items, including product specifications, cleanliness, safety precautions, and compliance with quality standards.

4. Include Clear and Concise Instructions

Just like with too little information, too much information can also be confusing. It can be challenging to strike a balance. Specifically, a well-designed inspection process checklist should be straightforward and easy to understand.

Here are some tips that you can follow:

Avoid Lengthy Sentences

Sometimes lengthy paragraphs can be challenging and confusing to read. Hence, consider breaking it into multiple steps. Through this, the inspector can focus on the more critical issues.

Clear Steps

Each and every step included in the inspection checklist should have a clear purpose. It is suggested to remove the unnecessary steps from the checklist.

Safety Instructions

It is important to add safety measures to the checklist while performing the inspection process in manufacturing. This identifies and reduces any risks or hazards present in manufacturing operations.

Add Interactive Visuals to Demonstrate the Steps

For detailed explanations and complex processes, add interactive images or videos alongside the checklist. This can enhance better understanding and provide clarity about the tasks. Operators can gain authentic and insightful information in real time.

In addition, implementing visual elements like arrows, annotations, drawings, and labels can further enhance the clarification of the inspection process steps. As a result, this ensures a consistent and better understanding of the operations, ultimately enhancing efficiency and reducing human errors.

Analyze your Checklists on a Regular Basis

Keep your manufacturing inspection checklist up to date, as this helps your organization stay in compliance and updated with industry norms. There can be the latest requirements and guidelines, certain areas for improvement, and changing equipment or technology. Hence, it is important to update your inspection checklist accordingly. Moreover, regularly reviewing and updating the inspection process checklist will optimize its effectiveness over time.

By implementing Plutomen Workflow, your experts can access built-in quality inspection checklists, allowing technicians to confirm that they have completed a task correctly and meet the necessary criteria before proceeding on to the next step. This can help to ensure that the task is done correctly the first time, reducing the need for rework and increasing overall productivity.

Elevate Quality Control and Efficiency in Manufacturing!

Create Checklist, Sops & Work Instructions for Manufacturing with Plutomen.

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The inspection process is crucial in manufacturing to ensure product quality, effectiveness, and customer satisfaction by checking products against required standards.

Inspection helps reduce costs in manufacturing by identifying defects early, avoiding rework, and preventing potential recalls or reputational damage.

Manufacturers can ensure effective and efficient inspections by defining clear standards, implementing digital inspection checklists, conducting thorough inspections, and taking timely corrective actions.
Hiren Kanani

Hiren Kanani

CTO, Cofounder of Plutomen

With 10+ years' experience of Hiren Kanani has helped Plutomen ensure smooth communication between the company and the client for swift project delivery with fewer iterations. He is CTO & founder at Plutomen.

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