What is a significant risk associated with primary vent system failure during a quench?

The significant risk associated with primary vent system failure during a quench is asphyxiation and pressure lock. During a quench, the superconducting magnets in an MRI system lose their superconducting state, resulting in a rapid release of helium gas, which can create a pressure buildup if the venting system fails. If the pressure relief system is unable to function properly, the helium gas can displace the air in the room, leading to reduced oxygen levels and posing a serious risk of suffocation or asphyxiation for individuals present. Furthermore, this pressure buildup can lead to physical injuries or damage to the MRI system itself, contributing to the dangers associated with a failed vent system during a quench event. Understanding the dynamics of gas displacement and pressure management in high-field MRI systems is vital for maintaining safety protocols.