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CBz - Online Hazmat Training: MC-312 Cryogenic Tankers
Note: I am having trouble posting a video in this discussion. Anyone have any suggestions? It's a short video (<1-minute). Using the reply function, I attached the video on the first reply, but it should be able to be imbeded into the original discussion page? CBz
It's mid-afternoon and you get toned out to respond to a hazardous materials incident involving a hazmat tanker that is reported to be on fire with smoke visible according to several motorists who called 9-1-1.
You arrive on scene and you see this:
* * * PLEASE LOOK A THE VIDEO IN THE BELOW RESPONSE * * *
What's your call here? How would you handle this incident?
TCSS,
CBz
Replies to This Discussion
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Permalink Reply by Fireyladd - Retired Chief Sharp on
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Shut down the road in both directions. Curtail any persons from going anywhere near the vehicle until it is determined what is in the vehicle. Once it is determined, using the DOT guidebook begin evacuation of downwind areas based on potential cloud or gasious activity. Notify the public and curtail activity in the area until our State Haz-Mat team arrives onscene. Above all control the scene until the appropriate Haz-mat team members arrive.
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Permalink Reply by Ben Waller on
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I'd just have the driver drive away - the product is Nitrogen. 85% of what we breathe is Nitrogen. The other 15% will dilute out in the relative concentration of ambient air to the pure Nitrogen venting from the tanker.
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Permalink Reply by John Rulli Jr. on
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yeah no problem bro!!
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Permalink Reply by Mike Schlags (Captain Busy) Retd on
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As an old hazmat Captain, getting calls for a semi on fire that turned out to be one of these more than once... which was the reason I choose this topic and video. Firefighters need to be aware that this is a common occurrence for a cryogenic tanker. The tanker is simply off gassing product which in this case is the same stuff we breathe, nitrogen. There is no fire hazard. This would be considered a false alarm.
Isn't it cool to learn something here that will actually be useable information in the field. When you go on scene in the future on a reported vehicle fire, you now will know that this is something that you not only see in motor vehicles but at hospitals or industries that employ the use of cryogenics.
I hope some of you find this type of post useful.
TCSS,
CBz
Note: So much for my argument about water tenders verses tankers... Just another inconsistency in life...
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No problem, bro. The FEMA terminology is what it is because you FIRESCOPE guys had a terminology system in place when no one else did, and FEMA just adopted it instead of re-inventing the wheel.
If they'd gotten the Left Coast (tender) and Right Coast (tanker) terminology straightened out and just used the FGC "sectors" for everything instead of the Branch/Division/Group with the mismash of what supervisor title is used at what level, the system would be simpler and less confusing.
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Have access to the internet in the field?
Can you visualize the vehicle?
Click and bookmark this link to provide container shape referenced materials for highways transportation vehicles. It's a great reference for your onboard computers used at emergencies.
http://chemresponsetool.noaa.gov/containers_guide/truck.htm
Cryogenic liquid tank truck (MC-338):
Typically carries gases liquefied by refrigeration, such as liquid oxygen, nitrogen, argon, carbon dioxide, and hydrogen. Product likely to be corrosive or flammable gas, or poisonous or oxidizing liquid. Temperature of product -150 degrees F or below.
Outer shell surrounds insulated inner tank, with vacuum space between. Large compartment mounted at rear of tank. Capacity of inner tank up to 7,000 gallons.
When sun heats tank and raises internal pressure, vapor may discharge from relief valves. Internal pressure up to 25 psi.
Very high BLEVE potential.
TCSS,
CBz
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