What protective measures should be taken in the presence of stray or impressed currents in dispensing systems?

In the context of dispensing systems where stray or impressed currents may be present, taking measures to prevent ignition is essential for safety. Stray currents can create a hazardous environment, especially when flammable gases such as compressed natural gas are involved. These currents can lead to sparks or arcs, which have the potential to ignite combustible materials.

Implementing preventative measures includes ensuring that all equipment and electrical systems are properly designed to minimize the risk of generating a spark. This may involve using intrinsically safe equipment, enforcing proper safety protocols, and ensuring that the area around the dispensing system is free from potential ignition sources.

While conducting daily inspections, using high-voltage cables, and implementing grounding techniques are all important safety practices, they do not directly address the critical need to prevent ignition in the presence of potentially explosive conditions created by stray currents. Preventing ignition is the foremost concern in response to stray or impressed currents, making it the most relevant option.