UL 121203-2021 pdf free download.Recommended Practice for Portable/Personal Electronic Products Suitable for Use in Class I, Division 2, Class I, Zone 2, Class II, Division 2, Class III, Division 1, Class III, Division 2, Zone 21 and Zone 22 Hazardous (Classified) Locations.
4.11 GAS FREE WORK PERMIT (GFWP) – A permit, resulting from approval by an authorized person under the application of a defined documented management work process, stating that work involving potential ignition sources may be performed in a hazardous (classified) location by ensuring that the atmosphere is free of ignitable concentrations of flammable gases or vapors. Note 1 to entry: Refer to NFPA 51B which provides provisions to prevent loss of life and property from fire or explosion as a result of any work involving burning, welding, or similar operations that is capable of initiating fires or explosions. Note 2 to entry: Gas free work permit may sometimes be referred to as a “Hot Work Permit.”
4.12 LABELED – Equipment or materials to which has been attached a label, symbol, or other identifying mark of an organization that is acceptable to the authority having jurisdiction and concerned with product evaluation, that maintains periodic inspection of production of labeled equipment or materials, and by whose labeling the manufacturer indicates compliance with appropriate standards or performance in a specified manner.
4.13 LISTED – Equipment, materials, or services included in a list published by an organization that is acceptable to the authority having jurisdiction and concerned with evaluation of products or services, that maintains periodic inspection of production of listed equipment or materials or periodic evaluation of services, and whose listing states that either the equipment, material, or services meets identified standards or has been tested and found suitable for a specified purpose. FPN: The means for identifying listed equipment may vary for each organization concerned with product evaluation, some of which do not recognize equipment as listed unless it is also labeled. Use of the system employed by the listing organization allows the authority having jurisdiction to identify a listed product.
4.14 NORMAL OPERATION – Operation of equipment conforming electrically and mechanically with its design specification and used within the limits specified by the manufacturer.
4.15 PORTABLE/PERSONAL ELECTRONIC PRODUCT (PEP) – Battery powered or photovoltaic cell powered apparatus that can be hand-held or that is intended for use while worn on a person’s body.
a) PEP 1 – Personal equipment that is deemed incapable of causing an ignition under normal operation.
b) PEP 2 – Portable or personal equipment that is deemed incapable of causing an ignition under normal operation.
5 Application
5.1 Locations containing flammable gases flammable liquid-produced vapor, combustible liquid- produced vapor, combustible dusts or ignitable fibers/flyings are required to be classified in accordance with Articles 500 – 506 of the National Electrical Code®. Portable/personal products could become an ignition source in these hazardous (classified) locations.
5.2 The hierarchy of control to determine if particular portable/personal products may be used in a specific hazardous (classified) location is shown in Table 5.1. PEP 1 or PEP 2 is only an option where NRTL certified products for use in the location are not available (refer to 1.4 for additional clarity for the term available).
5.3 Personnel shall take portable/personal products including PEP 1 and PEP 2 products with them when they vacate the area.UL 121203 pdf download.