A leaking nitrogen tank sent a Reed College building into evacuation mode late Wednesday, after reports of gas escaping from a large tank positioned near a doorway on the Southeast Portland campus.
Portland Fire & Rescue crews were called to the school in the Woodstock neighborhood, cleared the building and brought in hazardous-materials specialists while they worked to pin down the cause and scope of the leak.
What Portland Fire & Rescue reported
According to Portland Fire & Rescue, crews were dispatched for “a leak in a nitrogen gas tank” at a Reed College building. The agency said its hazardous-materials team was being consulted and confirmed that the building had been evacuated while the situation was evaluated.
The department noted that the large tank was leaking “near the doorway.” In follow-up replies, officials added that hazmat units “will add themselves if needed,” signaling that specialized teams would formally join the response if on-scene crews determined it was necessary.
Why nitrogen leaks trigger hazmat responses
Nitrogen is a simple asphyxiant that is not flammable, yet it can quickly push oxygen out of enclosed or poorly ventilated spaces, creating a serious risk of oxygen deficiency, according to Cornell Environmental Health and Safety.
Federal guidance and safety data sheets warn that vaporized liquid nitrogen expands dramatically in volume and can make indoor air unbreathable, a risk outlined in the NIOSH Pocket Guide. Because of those properties, first responders typically track oxygen readings and keep people out of affected buildings until specialists clear the air as safe.
Campus context and safety procedures
Reed’s safety manual lays out evacuation steps, emergency contacts and procedures for chemical incidents, with campus Community Safety coordinating notifications and sheltering, according to the Reed College Chemistry Safety Manual.
Portland Fire & Rescue said the response was centered on the Reed campus in the Woodstock neighborhood and indicated that crews would continue assessing whether dedicated hazmat teams should take over. Officials generally do not allow re-entry until atmospheric testing shows that oxygen levels are back within safe limits.
What to expect next
Responders are expected to remain on scene until the leak is secured and monitoring confirms the area is safe to re-enter. Students, staff and nearby residents are advised to keep an eye on official Reed College and city channels for updates and to follow any directions from emergency personnel. This story will be updated if authorities release additional details.
