Insulating flanges minimize the dangers arising from __________.

Insulating flanges serve a crucial purpose in preventing the accumulation of electrostatic charges in piping systems, especially those used in the transportation of flammable or hazardous materials. These flanges are designed to electrically isolate sections of the piping system, which helps mitigate the risk of static electricity build-up. When fluids flow through a pipeline, particularly those that are non-conductive, they can generate static charges due to friction and movement. If these charges accumulate and discharge suddenly, they can create ignition sources, leading to potential fires or explosions.

By using insulating flanges, the circuit that could allow for static charge accumulation is broken, thereby significantly reducing the risks associated with electrostatic discharges. This is particularly important in environments where flammable liquids are present, as electrostatic discharges can be a primary ignition source.

In the context of the other options, while pressure build-up, electromagnetic interference, and corrosive substances all pose real threats in various industrial applications, they are not directly addressed or mitigated by insulating flanges. Insulating flanges primarily focus on the electrical isolation needed to manage static electricity, which makes them critical in ensuring safety in operations involving fluid transport.