Standard Operating Procedures and the Technical Writer  

Standard operating procedures (SOPs) are sequences of steps for workers to follow to complete tasks. Owing to industry standards and government regulations, SOPs are increasingly in demand. The pharmaceutical sector is a case in point: Companies are expected to conform to GxP (good practices in manufacturing, testing, and other areas). A big part of GxP is the standardization and documentation of production tasks. The ISO 9000 conventions used in other industries have similar requirements. SOPs are typically required for activities such as operating or calibrating a machine, backing up data, testing samples, and requesting approvals of changes in systems.

Edelman, Mark. Intercom (2003). Careers>Workplace>Policies and Procedures>ISO 9000