How to Calculate Performance for OEE Overall Equipment Effectiveness.

In this article, you will learn what is performance score and how to calculate performance for OEE Overall Equipment Effectiveness on lean manufacturing activities.

Performance score, or Performance Loss Definition

The performance score is a metric that takes into account the following 3 factors during the manufacturing process:

1. idling,
2. minor stops and
3. reduced speed.

A Performance score of 100% means when the process or machine is running as fast as possible at the maximum speed without stopping or pauses. How to Calculate Performance for OEE

The low-performance score should be related to unexpected shutdowns or machinery breakdowns associated with a specific part or preventive maintenance tasks, such as poor lubrication or components too old or that need to be replaced.

The performance score (also called a Performance loss) is one of the three OEE Losses, which includes Availability scores and Quality scores.

The OEE formula is considering the multiplication of the availability score, performance score, and quality score and is represented by a percentage.

OEE = Performance Score  x  Availability Score  x  Quality Score

How to Calculate the Performance Score in 5 Steps?

CALCULATION EXAMPLE: 

Here is the example data recorded for the first shift:

• Shift Length = 8 hours (470 minutes)
• Breaks = 60 minutes
• Downtime = 40 minutes
• Ideal Cycle Time = 1.0 seconds per product
• Total Count = 10,000 products

Step 1. Calculate the Planned Production Time.

The performance calculation begins with Planned Production Time. How to Calculate Performance for OEE

To calculate the planned production time, let’s subtract the break time from any shift time.

Formula: Shift Length − Breaks

Example: 470 minutes − 60 minutes = 410 minutes

Step 2. Calculate the Run Time.

Then let’s calculate the run time. How to Calculate Performance for OEE

Run time Formula: Planned Production Time – Downtime or Stop Time.

Example: 410 minutes − 40 minutes = 370 minutes.

Run time = 370 minutes.

Step 3. Calculate the Performance using Run Time.

Formula: (Ideal Cycle Time × Total Count) / Run Time.

Example: (1.0 seconds × 10,000 Products) / (370 minutes × 60 seconds) = 0.45045 (45%) Performance Score.

Step 4. Calculate the Ideal Run Time.

Performance can also be calculated based on Ideal Run Rate. How to Calculate Performance for OEE

Ideal Run Rate – Theoretical maximum production rate considering the inverse of Ideal Cycle Time.

Used to calculate OEE Performance. A variation of the calculation uses Ideal Cycle Time instead.

If the Ideal Cycle Time is 1.0 seconds, then the equivalent Ideal Run Rate in this example is:

Ideal Run Rate = 1 product per second or 60 products per minute.

Step 5. Calculate the Performance using Ideal Run Time.

Performance Formula: (Total Count / Run Time) / Ideal Run Rate. How to Calculate Performance for OEE

Example: (10,000 products / 370 minutes) / 60 products per minute = 0.45045 (45%) Performance Score.

CIQA is a quality and regulatory consultant with 25 years of experience developing products and managing projects in the medical device supply chain, and pharmaceutical industries. Rest assured of the safety or being in the right hands.

Our Lean Manufacturing team could provide you a broad range of professional expertise implementing these techniques and tools.

SUBSCRIBE AND FOLLOW US TO LEARN MORE.

For more details about How to Calculate Performance for OEE, follow us.

Three (3) Options to Create Document Control Management DCM Procedures:

Bronze Option. You Can Create Your Own Quality Procedures, using a Template.

You can download samples of the Document Control Management DCM procedure templates in .pdf format. 

To see the complete list of the most popular quality procedures templates, click here.

In addition, you can request a quotation to buy online a full SOP template document in MS Word format that is completely editable, ready to fill, and adapt to your specific needs.

Silver Option. We Can Bring You Formal Training about How to Calculate Performance for OEE.

This option is recommended if you want to learn more about how to build robust quality system procedures. One of our expert(s) can provide online step-by-step training to your team (unlimited assistance) on how to build reliable SOPs using our template(s). Also, you can improve your corporate quality procedures and policies by incorporating our template(s) and tools.  It includes a fully editable template from the Bronze option, plus training, exams, and a training certificate for each assistant.  Request a quote now.

Gold Option. We Can Create Customized Quality Procedures.

One of our expert(s) will create and prepare your customized SOPs with the inputs and specific information of your company. It includes a fully editable template from the Bronze option, plus online support in document creation, implementation, and training. Request a quote online.

Get in compliance today, CONTACT US (Hablamos Español)

REFERENCES: How to Calculate Performance for OEE.

httpss://en.wikipedia.org/wiki/Lean_Six_Sigma

httpss://www.greycampus.com/blog/quality-management/a-brief-introduction-to-lean-and-six-sigma-and-lean-six-sigma

httpss://www.oee.com/calculating-oee.html