UL 120202 PDF

1 Scope

1.1 This document provides guidance in the preparation of control drawings for intrinsically safe apparatus, associated apparatus, and intrinsically safe systems.

1.2 This document is intended to be used in conjunction with ANSI/UL 913, Standard for Safety, Intrinsically Safe Apparatus and Associated Apparatus for Use in Class I, II, and III, Division 1, Hazardous (Classified) Locations, and ANSI/ISA-60079-11, Explosive Atmospheres – Part 11: Equipment protection by intrinsic safety “i”.

1.3 This document is not intended to include guidance for the design or installation of intrinsically safe equipment or systems.

1.4 A similar philosophy may be applied in the preparation of nonincendive field wiring control drawings, with appropriate modifications to address differences in the National Electrical Code®, NFPA 70, and applicable standards.

Summary of Topics

This revision of ANSI/UL 120202 dated April 11, 2022 is being issued to update the title page to reflect the most recent designation as a Reaffirmed American National Standard (ANS). No technical changes have been made.

Adoption of ANSI/ISA 12.02.02-2014, Standard for Recommendations for the Preparation, Content, and Organization of Intrinsic Safety Control Drawings, as ANSI/UL 120202. As noted in the Commitment of Amendments statement located on the back side of the title page, UL and ISA are committed to updating this co-designated standard jointly after processing according to the standards development procedures by UL.