Urea at NSA Utah Data Center

[John Young]

There are two spaces labeled "Urea Tank Room" in the NSA Utah
Data Center's Generator Plant shown in construction drawings
recently leaked:

http://cryptome.org/2013-info/07/nsa-utah-dc/nsa-utah-dc.htm

See Generator Plant floor plan drawing 11.2 A101 at bottom and
top left, spaces labeled "UT."

Urea is used in fuel cells. Are there other uses of urea in generator
or data processing equipment?