Shop

Artificial Intelligence Notice: ISA prohibits the entry of any ISA intellectual property (“ISA IP”), including standards, publications, training or other materials into any form of Artificial Intelligence (AI) tools, such as ChatGPT. Additionally, creating derivatives of ISA IP using AI is also prohibited without express written permission from ISA’s CEO. In the case of such use, ISA will suspend a licensee’s access to ISA IP, and further legal action will be considered. Please review ISA's policies for Use of AI Tools, Intellectual Property and Terms and Conditions for further information.

Important Notice: Print books are temporarily unavailable. As of 12 August 2025, print books are no longer available for purchase on isa.org, but beginning 1 January 2026, they will be available for purchase through our publishing partner, Wiley. Kindle and ePub formats are still available via the links on each book's product page on isa.org. Learn More.

Scope

This subcommittee will utilize symbols and identification per ANSI/ISA-5.1-2009, Instrumentation Symbols and Identification, in combination with other ISA standards, commonly used equipment symbols, and practitioner experience.

Further, while process flow diagrams (PFDs) are well understood by that name, piping and instrument diagrams (P&IDs) may exist under various other names or variations, such as mechanical flow diagrams; engineering flow diagrams; process and instrument diagrams; and process and control diagrams. The scope shall include these forms of the traditional P&ID.

Purpose

To produce and maintain a recommended practice for the development and use of process flow diagrams and piping and instrument diagrams.

Meetings

ISA5.7 does much of its work electronically. The subcommittee also holds face-face meetings. Notice of meetings will be circulated in advance to the email list.

For information about participating on ISA5.7, please contact standards@isa.org.