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To: Wonder Warthog
the need for cryogenics for LNG will be a a problem for highway usage.

I used to think the same myself. Then I learned that the tanks on the trucks/vehicles are both insulated and pressure rated that they can remain closed up and not in use for a minimum of 5 days without venting or requiring refrigeration input. I now understand this has been the minimum design requirement for some time now and manufactures having been meeting this criteria. In the stationary facilities, it is easier to manage. I've done some work years ago for LNG refueling on Metro Buses. While the equipment requirements are specific and with cost, it has become routine for several manufactures.

45 posted on 06/22/2012 9:30:02 AM PDT by thackney (life is fragile, handle with prayer)
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To: thackney
"Then I learned that the tanks on the trucks/vehicles are both insulated and pressure rated that they can remain closed up and not in use for a minimum of 5 days without venting or requiring refrigeration input. I now understand this has been the minimum design requirement for some time now and manufactures having been meeting this criteria."

My feeling is that the problem isn't related directly to temps and pressure, but in operator skill during fueling. With locomotive and marine, fueling is done infrequently, and by trained experts. With highway use, "not so much".

Admittedly, long-haul operators are more highly trained that the average smuck behind the wheel of a car, but is that difference enough?

It's a "human factors" thing.

47 posted on 06/22/2012 1:01:34 PM PDT by Wonder Warthog
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