ISA RP12.12.03 PDF

This recommended practice applies to both body worn and hand held portable electronic products for use in Class I, and II, Division 2, Class I, Zone 2, and Class III, Division 1 and 2 Hazardous (Classified) Locations which are not available listed or labeled for hazardous (classified) locations.

This recommended practice does not apply to products that are powered by premises wiring or connected to a communication line during use in the hazardous (classified) location.

Purpose

The purpose of this recommended practice is to provide guidance for the use of general-purpose portable electronic products in certain hazardous (classified) locations.

This recommended practice does not address other considerations involving the use of portable electronic products which may result in these devices being considered unsafe due to creation of a distraction from important work tasks or radio frequency interference with measurement and control equipment.

NOTE Portable and battery powered equipment is often unavailable as listed or labeled for use in classified locations due to:

• Rapidly changing technology

• Limited market

• Time consuming testing

• Product upgrading

As a result, additional guidance is needed to take advantage of this technology in a hazardous (classified) location in a safe and workable manner.