--- On Fri, 2/27/09, Richard Hendrickson <rhendrickson@...> wrote:
From: Richard Hendrickson <rhendrickson@...>
Subject: Re: [STMFC] Re: tank car question
To: STMFC@...
Date: Friday, February 27, 2009, 9:11 AM












On Feb 26, 2009, at 9:50 PM, Frank Fertitta wrote:

Try this Richard -

Shell-and-tube heat exchangers, and some large, industrial liquid

heaters have their tube bundles in a single pass (steam in the top

connection through internal copper U-tubes with condensate out the

bottom connection) configuration built so that the whole assembly

can be removed for repair. They are usually installed at the bottom

of the tank and removed horizontally. While the bundle is being

repaired, if the tank is required to be in continuous service, it

is not unusual to see a blind flange covering the mating flange

surface.

Is it possible that a tank car not originally built with serpentine

steam coils could be modified with connections for an internal,

removable tube bundle for heating liquids requiring viscosity

encouragement (paraffin perhaps) and then later removed?

Seems like that's as good a guess as any, Frank. But it begs the

question of what sort of non-inflammable liquid C-I steel would be

shipping that required ten 12,600 gal. tank cars with heaters.



Richard Hendrickson



[Non-text portions of this message have been removed]































[Non-text portions of this message have been removed]