This standard has been the result of studies, inspections, installations and manufacturing criteria used by UL to evaluate panic devices since 1920, when the first Panic Devices List was approved for publication. UL 305 has been developed in particular as a test method focused on the evaluation of panic devices to be used in emergency exits. Underwriters Laboratories (UL) published the first edition of the standard in 1955 which has been in continuous use through today’s sixth edition.
It is also relevant to note that UL 305 has become a mandatory requirement to which reference is made in the International Building Code (IBC) published by the International Code Council (ICC).
The IBC document is important for any company interested in exporting as rules are introduced in every state of the Union through various editions. Outside the United States, IBC content can be found in construction regulations in various places in the Middle East.
Four critical tests
- Durability Test
- Emergency Operation Test
- Low Temperature Impact Test
- High Environmental Exposure Test
If the product is intended to be installed and used on fire door sets, further tests must be carried out in accordance with ANSI/UL 10C Positive Pressure Fire Tests of Door Assemblies. When a fire rating is required, the device must be tested on doors that open inside and out of the oven.
For products that meet both panic and fire standards, the terminology changes as they are called fire exit hardware rather than panic hardware.
Extract from the authorized translation of the text by Mattew Schumann, UL