Why are low pressure systems considered safer?

Low pressure systems are considered safer primarily because they operate at lower pressures, which inherently reduces the risk of catastrophic failures, such as explosions or severe accidents that can occur in higher pressure systems. When a system operates at lower pressure, the energy stored within the system is less significant, which means that any potential leakage poses a reduced risk compared to high pressure systems. Thus, while all the options presented touch on aspects of safety and reliability, the characteristic of lower pressure systems makes them less prone to the dangerous consequences associated with pressure failures. This is why low pressure systems are often favored in environments where safety is a paramount concern, such as residential heating applications or older industrial equipment.