BS ISO 13879:1999

This standard BS ISO 13879:1999 Petroleum and natural gas industries. Content and drafting of functional specifications is classified in these ICS categories:

• 01.110 Technical product documentation
• 75.020 Extraction and processing of petroleum and natural gas

This International Standard provides guidance on the content and drafting of a functional specification.

A functional specification may not be necessary if a user/purchaser wishes to obtain a known standard product, process or service manufactured/supplied to a recognized standard.