poke yoke

poke yoke

a Japanese term meaning ‘to make fail-safe’. Any mechanism or process that prevents mistakes being made can be called a poke yoke. They are techniques and thinking designed to prevent errors in manufacture and service provision. The 3 pin plug is a simple poke yoke, it can only be inserted into the socket in one way, hence – fail-safe. Poke yokes have two broad functions, regulatory and setting. Regulatory devices are those that either control a process or give a warning about it. Control devices are used to shut a process down whenever it detects an abnormality. See PRODUCTION CONTROL.
References in periodicals archive ?
* Poke yoke the assembly process to ensure product can only be assembled one way.
These, like TPM/5S, are inherently related to poke yoke. In the past, a lot of companies used job certification books or how-to sheets for a job, but these were often a long dissertation on how to do a job.