Audit check sheets are used is ensure that a company or subcontractor is assessed on the their scope of work and helps management to improve efficiency. Audit check sheets can be used to verify if an inspection construction activity such as welding is compliant with good working practices. They can also be used to verify if a company is compliant with international standard such as ISO 9001 Quality Management systems. Audit Check sheets can be used to asses potential sub contractors when bidding for a project or when a subcontractor wants to be put on a companies approved supplier list.