'Engineering-approved standard processes are documented and used in all Manual processes where product variation or the probability of nonconformance's would be increased if a standard process did not exist. Standard processes can include BKMs (Best Known Methods), OMS (Operation Method Sheets), instructions on production documents like travelers, etc. Process instructions also include working environment requirements like cleanroom protocol, ESD (Electrostatic Discharge) prevention, and PPE (Personal Protective Equipment) use. The need for standard processes is directly related to the complexity of the process and the skill and knowledge of the typical operator.