Quench Pipe (MRI)

Non-negotiable MRI safety feature. Routes helium boil-off from a quench to outside air. Sized to vent rapidly-expanding helium (1 L liquid → ~750 L gas).

Design requirements

• Direct external termination — never into occupied space
• Short path (minimize back-pressure)
• Weather-protected outlet (screen to keep debris out)
• Annual inspection

Why it matters

A blocked or malfunctioning quench pipe during a quench can pressurize the magnet room + suffocate occupants. Taken very seriously.