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Liquid Nitrogen Leak Prompts Building Evacuation

4045 Mason Rd NE

Published · Updated

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Summary

  • Firefighters responded to a liquid nitrogen leak from a 203-liter tank at a Seattle location, ensuring the building was evacuated and activating the fire alarm to facilitate the process.

Timeline

Seattle Fire says it is now safe to return to the building, and all units are returning to service.

Hazmat crews mitigated the hazard and monitored the air inside the building, according to Seattle Fire.

Firefighters located a leaking cylinder inside a building in the 4000 block of Mason Road NE and moved it to an exterior balcony, Seattle Fire said. Hazmat crews prepared to enter.

The building has been evacuated as a precaution, officials say.

The cylinder is on a balcony, outside.

[SFD 3 ] Rescue · 0:10
Okay, command, the cylinder is outside on the balcony. Okay.

Firefighters are investigating a valve issue as a potential source of the leak.

[SFD 3 ] Rescue · 0:07
A problem at the valve. The question is, is it at stem? There's a concern...

Firefighters report ice accumulation on the cylinder, indicating a cryogenic hazard.

[SFD 3 ] Rescue · 0:10
We have ice that is accumulated on the cylinder. We have a cryogenic hazard.

The fire alarm has been activated to prompt evacuations.

[SFD 3 ] Rescue · 0:05
Fire alarm to evacuate the building. That's affirmative, activate it now.

Firefighters are inside the building to ensure it is evacuated.

[SFD 3 ] Rescue · 0:04
All units, we'll be on air inside the building.
[SFD 3 ] Rescue · 0:04
in order to ensure it's evacuated.

Firefighters have been informed of an active leak in a 203-liter tank of liquid nitrogen.

[SFD 3 ] Rescue · 0:05
Suit command, I've got a report of a...
[SFD 3 ] Rescue · 0:07
a leak that is active in a living sink that is 200 and 3 liters. This leak...

Firefighters have received a report of a liquid nitrogen spill. The amount is unknown.

[SFD 3 ] Rescue · 0:24
Econ 1 responding, Engine 27. Engine 17, hazardous materials response, 4050, correction, 4045 Mason Road Northeast. Engine 17, 4045 Mason Road Northeast. And number 215 of Fluke Hall, report of liquid nitrogen spill, unknown amount. Checking for an emergency port.

A 911 caller has reported an unconfirmed incident at 4045 Mason Rd NE.

Seattle Fire says it is now safe to return to the building, and all units are returning to service.

Hazmat crews mitigated the hazard and monitored the air inside the building, according to Seattle Fire.

Firefighters located a leaking cylinder inside a building in the 4000 block of Mason Road NE and moved it to an exterior balcony, Seattle Fire said. Hazmat crews prepared to enter.

The building has been evacuated as a precaution, officials say.

The cylinder is on a balcony, outside.

[SFD 3 ] Rescue · 0:10
Okay, command, the cylinder is outside on the balcony. Okay.

Firefighters are investigating a valve issue as a potential source of the leak.

[SFD 3 ] Rescue · 0:07
A problem at the valve. The question is, is it at stem? There's a concern...

Firefighters report ice accumulation on the cylinder, indicating a cryogenic hazard.

[SFD 3 ] Rescue · 0:10
We have ice that is accumulated on the cylinder. We have a cryogenic hazard.

The fire alarm has been activated to prompt evacuations.

[SFD 3 ] Rescue · 0:05
Fire alarm to evacuate the building. That's affirmative, activate it now.

Firefighters are inside the building to ensure it is evacuated.

[SFD 3 ] Rescue · 0:04
All units, we'll be on air inside the building.
[SFD 3 ] Rescue · 0:04
in order to ensure it's evacuated.

Firefighters have been informed of an active leak in a 203-liter tank of liquid nitrogen.

[SFD 3 ] Rescue · 0:05
Suit command, I've got a report of a...
[SFD 3 ] Rescue · 0:07
a leak that is active in a living sink that is 200 and 3 liters. This leak...

Firefighters have received a report of a liquid nitrogen spill. The amount is unknown.

[SFD 3 ] Rescue · 0:24
Econ 1 responding, Engine 27. Engine 17, hazardous materials response, 4050, correction, 4045 Mason Road Northeast. Engine 17, 4045 Mason Road Northeast. And number 215 of Fluke Hall, report of liquid nitrogen spill, unknown amount. Checking for an emergency port.

A 911 caller has reported an unconfirmed incident at 4045 Mason Rd NE.

Seattle Fire says it is now safe to return to the building, and all units are returning to service.

Hazmat crews mitigated the hazard and monitored the air inside the building, according to Seattle Fire.

Firefighters located a leaking cylinder inside a building in the 4000 block of Mason Road NE and moved it to an exterior balcony, Seattle Fire said. Hazmat crews prepared to enter.

The building has been evacuated as a precaution, officials say.

The cylinder is on a balcony, outside.

[SFD 3 ] Rescue · 0:10
Okay, command, the cylinder is outside on the balcony. Okay.

Firefighters are investigating a valve issue as a potential source of the leak.

[SFD 3 ] Rescue · 0:07
A problem at the valve. The question is, is it at stem? There's a concern...

Firefighters report ice accumulation on the cylinder, indicating a cryogenic hazard.

[SFD 3 ] Rescue · 0:10
We have ice that is accumulated on the cylinder. We have a cryogenic hazard.

The fire alarm has been activated to prompt evacuations.

[SFD 3 ] Rescue · 0:05
Fire alarm to evacuate the building. That's affirmative, activate it now.

Firefighters are inside the building to ensure it is evacuated.

[SFD 3 ] Rescue · 0:04
All units, we'll be on air inside the building.
[SFD 3 ] Rescue · 0:04
in order to ensure it's evacuated.

Firefighters have been informed of an active leak in a 203-liter tank of liquid nitrogen.

[SFD 3 ] Rescue · 0:05
Suit command, I've got a report of a...
[SFD 3 ] Rescue · 0:07
a leak that is active in a living sink that is 200 and 3 liters. This leak...

Firefighters have received a report of a liquid nitrogen spill. The amount is unknown.

[SFD 3 ] Rescue · 0:24
Econ 1 responding, Engine 27. Engine 17, hazardous materials response, 4050, correction, 4045 Mason Road Northeast. Engine 17, 4045 Mason Road Northeast. And number 215 of Fluke Hall, report of liquid nitrogen spill, unknown amount. Checking for an emergency port.

A 911 caller has reported an unconfirmed incident at 4045 Mason Rd NE.

Seattle Fire says it is now safe to return to the building, and all units are returning to service.

Hazmat crews mitigated the hazard and monitored the air inside the building, according to Seattle Fire.

Firefighters located a leaking cylinder inside a building in the 4000 block of Mason Road NE and moved it to an exterior balcony, Seattle Fire said. Hazmat crews prepared to enter.

The building has been evacuated as a precaution, officials say.

The cylinder is on a balcony, outside.

[SFD 3 ] Rescue · 0:10
Okay, command, the cylinder is outside on the balcony. Okay.

Firefighters are investigating a valve issue as a potential source of the leak.

[SFD 3 ] Rescue · 0:07
A problem at the valve. The question is, is it at stem? There's a concern...

Firefighters report ice accumulation on the cylinder, indicating a cryogenic hazard.

[SFD 3 ] Rescue · 0:10
We have ice that is accumulated on the cylinder. We have a cryogenic hazard.

The fire alarm has been activated to prompt evacuations.

[SFD 3 ] Rescue · 0:05
Fire alarm to evacuate the building. That's affirmative, activate it now.

Firefighters are inside the building to ensure it is evacuated.

[SFD 3 ] Rescue · 0:04
All units, we'll be on air inside the building.
[SFD 3 ] Rescue · 0:04
in order to ensure it's evacuated.

Firefighters have been informed of an active leak in a 203-liter tank of liquid nitrogen.

[SFD 3 ] Rescue · 0:05
Suit command, I've got a report of a...
[SFD 3 ] Rescue · 0:07
a leak that is active in a living sink that is 200 and 3 liters. This leak...

Firefighters have received a report of a liquid nitrogen spill. The amount is unknown.

[SFD 3 ] Rescue · 0:24
Econ 1 responding, Engine 27. Engine 17, hazardous materials response, 4050, correction, 4045 Mason Road Northeast. Engine 17, 4045 Mason Road Northeast. And number 215 of Fluke Hall, report of liquid nitrogen spill, unknown amount. Checking for an emergency port.

A 911 caller has reported an unconfirmed incident at 4045 Mason Rd NE.

Seattle Fire says it is now safe to return to the building, and all units are returning to service.

Hazmat crews mitigated the hazard and monitored the air inside the building, according to Seattle Fire.

Firefighters located a leaking cylinder inside a building in the 4000 block of Mason Road NE and moved it to an exterior balcony, Seattle Fire said. Hazmat crews prepared to enter.

The building has been evacuated as a precaution, officials say.

The cylinder is on a balcony, outside.

[SFD 3 ] Rescue · 0:10
Okay, command, the cylinder is outside on the balcony. Okay.

Firefighters are investigating a valve issue as a potential source of the leak.

[SFD 3 ] Rescue · 0:07
A problem at the valve. The question is, is it at stem? There's a concern...

Firefighters report ice accumulation on the cylinder, indicating a cryogenic hazard.

[SFD 3 ] Rescue · 0:10
We have ice that is accumulated on the cylinder. We have a cryogenic hazard.

The fire alarm has been activated to prompt evacuations.

[SFD 3 ] Rescue · 0:05
Fire alarm to evacuate the building. That's affirmative, activate it now.

Firefighters are inside the building to ensure it is evacuated.

[SFD 3 ] Rescue · 0:04
All units, we'll be on air inside the building.
[SFD 3 ] Rescue · 0:04
in order to ensure it's evacuated.

Firefighters have been informed of an active leak in a 203-liter tank of liquid nitrogen.

[SFD 3 ] Rescue · 0:05
Suit command, I've got a report of a...
[SFD 3 ] Rescue · 0:07
a leak that is active in a living sink that is 200 and 3 liters. This leak...

Firefighters have received a report of a liquid nitrogen spill. The amount is unknown.

[SFD 3 ] Rescue · 0:24
Econ 1 responding, Engine 27. Engine 17, hazardous materials response, 4050, correction, 4045 Mason Road Northeast. Engine 17, 4045 Mason Road Northeast. And number 215 of Fluke Hall, report of liquid nitrogen spill, unknown amount. Checking for an emergency port.

A 911 caller has reported an unconfirmed incident at 4045 Mason Rd NE.

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Comments6

ribaroo37181Aug 2 at 11:09 AM

last night someone left a valve on, now we’re spilling liquid nitrogen!

LadyRainierAug 2 at 11:48 AM

Asphyxiation from oxygen displacement in liquid nitrogen is a very real risk and should be of great concern. Liquid nitrogen expands nearly 700 times into a gas as it warms. Because nitrogen gas is colorless and odorless, victims cannot sense the lack of oxygen and can pass out or die within seconds.

seattleUser2275116005Aug 2 at 11:28 AM

Rip

Yoda78901Aug 2 at 11:12 AM

Well then…

ribaroo37181Aug 2 at 11:09 AM

last night someone left a valve on, now we’re spilling liquid nitrogen!

LadyRainierAug 2 at 11:48 AM

Asphyxiation from oxygen displacement in liquid nitrogen is a very real risk and should be of great concern. Liquid nitrogen expands nearly 700 times into a gas as it warms. Because nitrogen gas is colorless and odorless, victims cannot sense the lack of oxygen and can pass out or die within seconds.

seattleUser2275116005Aug 2 at 11:28 AM

Rip

Yoda78901Aug 2 at 11:12 AM

Well then…

ribaroo37181Aug 2 at 11:09 AM

last night someone left a valve on, now we’re spilling liquid nitrogen!

LadyRainierAug 2 at 11:48 AM

Asphyxiation from oxygen displacement in liquid nitrogen is a very real risk and should be of great concern. Liquid nitrogen expands nearly 700 times into a gas as it warms. Because nitrogen gas is colorless and odorless, victims cannot sense the lack of oxygen and can pass out or die within seconds.

seattleUser2275116005Aug 2 at 11:28 AM

Rip

Yoda78901Aug 2 at 11:12 AM

Well then…

ribaroo37181Aug 2 at 11:09 AM

last night someone left a valve on, now we’re spilling liquid nitrogen!

LadyRainierAug 2 at 11:48 AM

Asphyxiation from oxygen displacement in liquid nitrogen is a very real risk and should be of great concern. Liquid nitrogen expands nearly 700 times into a gas as it warms. Because nitrogen gas is colorless and odorless, victims cannot sense the lack of oxygen and can pass out or die within seconds.

seattleUser2275116005Aug 2 at 11:28 AM

Rip

Yoda78901Aug 2 at 11:12 AM

Well then…

ribaroo37181Aug 2 at 11:09 AM

last night someone left a valve on, now we’re spilling liquid nitrogen!

LadyRainierAug 2 at 11:48 AM

Asphyxiation from oxygen displacement in liquid nitrogen is a very real risk and should be of great concern. Liquid nitrogen expands nearly 700 times into a gas as it warms. Because nitrogen gas is colorless and odorless, victims cannot sense the lack of oxygen and can pass out or die within seconds.

seattleUser2275116005Aug 2 at 11:28 AM

Rip

Yoda78901Aug 2 at 11:12 AM

Well then…

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