GB/T 17989.8-2022 Active National standards

GB/T 17989.8-2022 Statistical method of quality control in production process—Control charts—Part 8:Charting techniques for short runs and small mixed batches

Publish Date: 2022-03-09 Implement Date: 2022-10-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 17989.8-2022

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Mathematics

ICS Name: The application of statistical methods

Publish Date: 2022-03-09

Implement Date: 2022-10-01

Pages: 35 pages

Scope

This document describes the method of monitoring short-cycle and small-batch production processes using conventional control charts when the subgroup size is limited to 1. It provides a set of tools to help understand the sources of fluctuations in these processes, so as to better manage them.
This document is applicable to the process control of measurement-type quality characteristics when the subgroup size is 1. The control charts involved here are process-oriented rather than product-oriented. Users can plot points, monitor, and control similar characteristics of different products, or different characteristics of the same product on the same control chart.
Note 1: The definitions of short-cycle and small-batch are not perfect. In this document, short-cycle and small-batch refer to the situation where a product is only produced in small quantities before another product is produced subsequently.
Note 2: For cases where the subgroup size is greater than 1, other standards apply.