Control Plan is a written document providing details of control methods for product and process characteristics. Its purpose is to minimize variation in both product and process characteristics. It is a key deliverable under PPAP requirements as well as in Control phase in DMAIC project. Control plan essentially covers the following elements
1. Characteristics and/or inputs (both product and process) to be controlled
2. Tolerances and trigger points for these inputs
3. Methods or actions required to keep the inputs within control
4. Escalation and response plan in case the inputs go out tolerance limits
A control plan is a live document i.e. it has to be revised following changes in either the product or process characteristics.
An application-oriented question on the topic along with responses can be seen below. The best answer was provided by Vastupal Vashisth on 19th February 2019.
Applause for all the respondents- Hari Shyam, Vastupal Vashisth
Also review the answer provided by Mr Venugopal R, Benchmark Six Sigma's in-house expert.