In May 2009 the German norm ASR A3.4/3 was established. It stipulates the requirements on a safety guidance system for work places.

It also continues the requirements of BGR 216 and put them legally into force. BGR 216 was the first regulation that communicated the requirement for an optical safety guidance system in detail.

Optical safety guidance systems according to ASR A3.4/3 are always low location systems. During a fire, the least smoke will be right above the ground exactly where the low location lighting system is installed. Those systems are required when the smoke spread in normal height cannot be eliminated. In those instances the high level egress path markings can quickly become invisible.

Due to complex architectures and structures it is often difficult to prove that smoke will not spread to normal height. An important factor here are different flammable materials with compounds that majorly influence the smoke density and spread.

As a result of many years of experience and testing, a low location lighting system has to be installed on the wall not higher than 40 cm above the floor or directly on the floor.

Depending on conditions and load, you can also apply
PVC and polycarbonate films,
aluminum or stainless steel and
epoxy pain or casting resin.
The egress direction has to be easily recognizable. Intermediate doors, hallways and stairs are part of the egress path and have to be marked accordingly.

A photoluminescent guidance system should always be made of the luminance value ‘power’. These products are sufficiently charged in normal lighting conditions according to ASR A7.3 ‘Artificial lighting’ to reach luminance values requested by ASR A3.4/3.

Ask our specialists if the lighting conditions in your building are sufficient to charge photoluminescent products.