This document outlines a presentation on setting up deviation, incident, and non-conformance systems for quality control. It discusses regulations from PIC/S and FDA, provides definitions for key terms, and outlines the process for raising, investigating, and closing deviations. A case study walks through investigating and resolving a plastic contaminant found in a batch. It also discusses best practices for setting up a new system and common problems to avoid, such as poor investigations and failure to address root causes.