UL 120202:2017

$78.65

Recommendations for the Preparation, Content, and Organization of Intrinsic Safety Control Drawings

Published By	Publication Date	Number of Pages
UL	2017-06-30	22

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Category: UL

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Description

1 Scope

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

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

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

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

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