What is the relief valve setting on a propane tank (pressure vessel)?

The relief valve setting on a propane tank is designed to ensure safe operation by preventing overpressure situations that could lead to catastrophic failures. The correct setting of 250 psi for the relief valve of a propane tank is based on safety standards and regulations governing the storage of propane gas.

Propane tanks are built to withstand certain pressures, and the relief valve is calibrated to open and release gas if the internal pressure exceeds 250 psi. This helps to protect the integrity of the tank and prevent dangerous incidents such as explosions or leaks that could occur if the pressure were allowed to rise uncontrollably.

The other options do not align with the established safety standards for propane tank relief valve settings. For example, a setting of 375 psi would be too high, potentially allowing excessive pressure to build up in the tank before the valve activates. Similarly, settings of 175 psi and 35 psi also do not meet the required thresholds for safe operation of a propane tank, which can lead to hazardous conditions if not properly regulated. Thus, the appropriate relief valve setting of 250 psi is critical for maintaining safety and compliance with technical standards in propane gas systems.