What is a quality plan?

A quality plan is a "document specifying the quality management system elements and the resources to be applied in a specific case". The “case” may be a product, project, process or even a specific contract.
The quality plan can consist of production paperwork, a formal plan, a table of requirements, or other form of document that specifies what needs to be done for operation, control, monitoring and measuring of the process, project or product.