Overproduction

Overproduction is one of the seven kinds of wastes in the Lean Manufacturing methodology and refers to the production of goods in excess of what is immediately required by the customer. This type of waste can have a significant impact on the efficiency and profitability of a manufacturing operation, and as a Lean Management Expert, I would like to provide an overview of the negative effects of overproduction.

One of the main negative effects of overproduction is increased inventory costs. When a manufacturer produces more goods than are immediately required by the customer, the excess inventory takes up valuable space in the warehouse and incurs additional costs for storage and handling. This inventory also ties up capital that could be used elsewhere in the business, reducing the overall financial performance of the company.

Another negative effect of overproduction is increased lead time. When a manufacturer produces goods in excess of what is immediately required, the production line may become congested, leading to delays and increased lead time. This can negatively impact customer satisfaction and reduce the competitiveness of the manufacturer.

Overproduction can also lead to increased defects and decreased quality. When a manufacturer produces more goods than are immediately required, the pressure to maintain production speed and volume can lead to shortcuts being taken and decreased attention to detail. This can result in an increase in defects and a decrease in overall product quality, leading to customer complaints and reduced customer loyalty.

Finally, overproduction can contribute to a lack of flexibility and responsiveness. When a manufacturer produces more goods than are immediately required, they may not be able to respond quickly to changes in customer demand, leading to increased lead time and decreased customer satisfaction. This can also result in increased costs due to the need to adjust production processes and manage excess inventory.

In a nutshell, overproduction is a significant waste in the manufacturing process and can have a negative impact on efficiency, profitability, and customer satisfaction. By focusing on reducing overproduction and improving production processes, manufacturers can increase their competitiveness and improve their overall performance. We recommend that manufacturers continuously monitor their production processes and work to reduce overproduction and improve the overall efficiency of their operations

Push Principle

The Push Principle Concept/Term refers to a production system where material and products are manufactured and moved along the production line based on a predicted demand, rather than actual demand. This system operates under the assumption that the customer demand can be accurately forecasted and the production line can be appropriately scheduled to meet that demand.

However, the Push Principle often leads to negative impacts on operations. One of the main problems with this system is the assumption of accurate demand forecasting. In reality, customer demand is highly unpredictable and can fluctuate rapidly, leading to overproduction and inventory buildup. This excess inventory creates significant problems such as storage and handling costs, obsolescence, and potential quality issues.

Additionally, the Push Principle often results in an inefficient utilization of resources. The production line is designed to produce a set amount of product, regardless of actual demand. This can lead to idle time and equipment, increased energy costs, and reduced production capacity. The production process is also disrupted by production line breakdowns, worker absences, and equipment failures, resulting in increased downtime and decreased efficiency.

Another negative impact of the Push Principle is that it can lead to a lack of focus on customer needs. The emphasis is on meeting a predetermined production schedule, rather than meeting the actual needs of the customer. This can result in an overproduction of products that are not needed, as well as a lack of flexibility to adapt to changing customer demand.

To mitigate these negative impacts, Lean Management experts advocate for the implementation of the Pull Principle. The Pull Principle is a system where production is based on actual customer demand, rather than a predicted demand. This system allows for a more flexible and efficient utilization of resources, as well as a greater focus on meeting the actual needs of the customer.

In a nutshell, the Push Principle can lead to negative impacts on operations such as inventory buildup, resource inefficiency, and a lack of focus on customer needs. Lean Management experts recommend the implementation of the Pull Principle as a more efficient and effective alternative. By focusing on actual customer demand, organizations can achieve greater operational efficiency and meet the needs of their customers.

Ergonomic Workplace

An ergonomic workplace is a work system that considers the ergonomic aspects of an operation and the operator such as the operator’s hight, range and reach with the goal that the operator does not need to bend or turn.

The ergonomic workplace goes hand in hand with the work improvement.

Definition and purpose

1. Reveal waste increasing cost and not adding value.

2. Find waste in the movement of workers, eliminate/improve, pursue net work adding value.

Worker Movement

Lean Manufacturing and Ergonomics may have different roots and directions but together they can complement each other and define a more efficient and safer workplace.

One of the best person known for focusing on productivity and efficiency in manufacturing processes was Henry Ford with the invention of the modern assembly line. Ford really was focusing on eliminating waste and to cut down unnecessary costs in relation to the manufacturing of his cars.

Toyota is one of the best known companies that has stretched to the maximum the idea of Lean Manufacturing and is now holding the pole position when it comes to the reputation according the elimination of “waste”.

By looking at the Lean Model as well as Work Ergonomics, you clearly see the necessity of both practices in the industrial workplace, as well as observe that both can complement each other. 

The 7 types of waste to eliminate include:

• Transport

• Inventory

• Motion/Movement

• Waiting

• Overproduction

• Overprocessing

• Defects

The list of TIMWOOD is what Toyota has defined as the seven major types of wastes or non-value-adding activities. The seven wastes do not add any value to the product and the customer in the end is not willing to pay for it. Therefore it is essential to remove as much waste as possible which will have also an effect on the ergonomic workplace and furthermore on the health of the operators.

Some of these things like transport, waiting or unnecessary movement can be reduced to a limit what the operator still needs because as human being the operator is limited by his body.

The Lean Manufacturing initiatives and workplace ergonomics stepped into the manufacturing world at different times and therefore are not fully integrated. But you are perfectly advised by combining the principles of Workplace Ergonomics with Lean Manufacturing initiatives. Through a cooperative assessment and teamwork you have the chance to complement each other in making the workplace more efficient and a safer place.