Mistake Proofing Human Error
research should be removed. (April 2014) (Learn how and when to remove this template message) Poka-yoke example: Ethernet cable plug is designed to be plugged in only one orientation. Poka-yoke (ポカヨケ?) [poka yoke] is a Japanese term that means "mistake-proofing" or “inadvertent error prevention”. The key word in the second translation, often omitted, is "inadvertent". There is no Poka Yoke solution that protects against an operator’s sabotage, but sabotage is a rare behavior among people.[1] A poka-yoke is any mechanism in a lean manufacturing process that helps an equipment operator avoid (yokeru) mistakes (poka). Its purpose is to eliminate product defects by preventing, correcting, or drawing attention to human errors as they occur.[2] The concept was formalised, and the term adopted, by Shigeo Shingo as part of the Toyota Production System.[3][4] It was originally described as baka-yoke, but as this means "fool-proofing" (or "idiot-proofing") the name was changed to the milder poka-yoke. Contents 1 Usage 2 History 3 Implementation in manufacturing 4 Benefits of Poka Yoke implementation 5 See also 6 References 7 Further reading 8 External links Usage[edit] More broadly, the term can refer to any behavior-shaping constraint designed into a process to prevent incorrect operation by the user. A simple poka-yoke example is demonstrated when a driver of the car equipped with a manual gearbox must press on the clutch pedal (a process step, therefore a poka-yoke) prior to starting an automobile. The interlock serves to prevent unintended movement of the car. Another example of poka-yoke would be the car equipped with an automatic transmission, which has a switch that requires the car to be in "Park" or "Neutral" before the car can be started (some automatic transmissions require the brake pedal to be depressed as well). These serve as behavior-shaping constraints as the action of "car in Park (or Neutral)" or "foot depressing the clutch/brake pedal" must be performed before the car is allowed to start. The requirement of a depressed brake pedal to shift most of the cars with an automatic transmission from "Park" to any other gear is yet another example of a poka-yoke application. Over time, the driver's behavior is
for reference purposes only. It was current when produced and may now be outdated. Archive material is no longer maintained, and some links may not work. Persons with disabilities having difficulty accessing this information should contact us at: https://info.ahrq.gov. Let us know the nature of the problem, the Web address of what you want, and your contact information. Please go to www.ahrq.gov for current information. Page 1 of 1 Publication # 07-0020 Go to Online Store Chapter 1. What is Mistake-Proofing? Mistake-Proofing the Design of Health Care Processes - Chapter 1. What Is Mistake-Proofing? https://en.wikipedia.org/wiki/Poka-yoke IntroductionThe process of turning on a burner on a stove is a simple one. It is an everyday task that most people have performed hundreds of times. Have you ever turned on the wrong burner? Have you ever gone from one room to another in your house only to forget why you went there in the first place? Have you ever put something in the https://archive.ahrq.gov/professionals/quality-patient-safety/patient-safety-resources/resources/mistakeproof/mistake1.html refrigerator that belonged in the cupboard?Patients should experience health care processes that are more reliable than manufacturing processes. Regrettably, that is not yet the case.1These are common errors. Their consequences are usually not very serious. Once you have made these errors, what can you do to ensure that they never happen again? Are willpower and determination enough to avoid them? If one believes that "to err is human," then the answer to these questions is, "No." People who make these errors are not unmotivated or negligent. More importantly, they cannot eliminate the errors simply by telling themselves to do better and deciding not to commit them. The Joint Commission on Accreditation of Healthcare Organizations (JCAHO)2 adds that "it assumes that no matter how knowledgeable or careful people are, errors will occur in some situations and may even be likely to occur."If executed correctly, many of the tasks that medical professionals perform as part of their jobs offer the potential to heal. The same tasks performed incorrectly, however, can also contribute to harming patients.Clinicians need to become comfortable performing a wide variety of tasks, some of which are not very different from
processes so that human errors or mistakes are impossible to make or, at the least, they are easy and early to detect and correct. Poka-yoke http://www.aleanjourney.com/2016/07/sixteen-human-error-modes-for-mistake.html is Japanese slang for mistake-proofing, a term coined by Shigeo Shingo. When performing a mistake-proofing analysis on a manufacturing, service or business process, it is of course important to identify every human error possible http://www.whatissixsigma.net/mistake-proofing-poka-yoke/ during each process step. There are 16 human error modes particularly helpful to understand when identifying potential human errors. The Sixteen Human Error Modes 1. Omission What part of the process is prone mistake proofing to be omitted? 2. Excessive/Insufficient Repetition What part of the process is prone to be excessively repeated? 3. Wrong Order or Sequence In what wrong sequence can the process be executed? 4. Early/Late Execution What execution can be early or late? 5. Execution of Restricted Work What tasks could be executed by unauthorized personnel? 6. Incorrect Selection (or Identification) What object of the process is prone to be mistake proofing human incorrectly selected or identified? 7. Incorrect Counting (or Calculating) What objects of the process can be counted, measured, or calculated incorrectly? 8. Misrecognition (or Misunderstanding or Misreading) What misunderstanding or misreading is prone to occur? What information, risk, or failure/error is prone to be overlooked? What miscommunication is prone to occur? What incorrect decision is prone to occur? 9. Failing to Sense Danger What information, risk, or failure/error is prone to be overlooked? 10. Incorrect Holding What object of the process are prone to mishandling? 11. Incorrect Positioning What positioning setting error is prone to occur? 12. Incorrect Orientation What orientation error is prone to occur? 13. Incorrect Motion What motion or movement error is prone to occur? 14. Improper Holding What object of the process are prone to mishandling? 15. Inaccurate Motion What motion or movement error is prone to occur? 16. Insufficient Avoidance What can be unintentionally touched, stuck, or splashed? What movement can cause harm? We must approach human error by considering the interfaces of the process that the operator is engaged in. The process should be designed to permit communication between the process and the operator. Shingo argued that errors are inevitable in any manufacturing proce
is to improve the efficiency and productivity in the organization. Any improvement done whether on the process or the product/service eventually leads to more satisfied customers, which means more profit. Several Six Sigma Tools have been discussed; each of them has its own characteristics, advantages, and disadvantages. Mistake Proofing is another Six Sigma tool most of the time integrated with other Lean Six Sigma Tools such as 5S Visual Management, Quick Changeover, Standard Work, and One Piece Flow. Sometimes called Poka-Yoke or Fail-Safing, it is characterized as an improvement procedure (or device) which aims to avoid or eliminate defects or errors from happening. The procedure is capable of immediately detecting errors once they occurred. The procedure implements correct operations by getting rid of choices which may lead to wrong actions. The potential of Mistake Proofing is endless and requires little resources. When to use Mistake Proofing Not all Six Sigma studies require the use of Mistake Proofing. Though the procedure does not require much funding, the study involves lots of work which equates to more time. Mistake Proofing is suggested when the consequences of a defect are costly or bear high risk. It is also conducted when a minor defect which is detected in the early process will cause major tribulations in the later process. All service-oriented studies are encouraged to use Mistake Proofing. This is because customers can create defects which will eventually affect the output. Some organizational processes involve human interventions. These interventions can cause defects – that’s why Mistake Proofing is also encouraged for processes that rely on worker’s skill, attention or experience. Lastly, Mistake Proofing is also recommended for hand-off processes. This is the process when a customer is transferred to other personnel. The situation will identify the reaction of the customer if he/she will be transferred to another personnel. Advantages of using the Mistake Proofing method Since the aim of the study is to detect possible mistakes or errors, it possesses several advantages not just to the study and the organization but to the team as well: Encourages individual accountability for e