We got to the bottom of it! The saftey boil off valve was apparently
leaking... Swapped it with another and the issue went away and the boil
off level returned to normal. Thanks!
On Feb 27, 2015 9:56 AM, "Kenneth Knott" <kknott_at_vt.edu> wrote:
> In recent days one of our nitrogen ports has begun to frost up at the
> top. This is definitely a new concurrence. We have probed the stacks for
> blockages and all seem clear. The nitrogen boil off reading (coming from
> the other stack) appears much lower than normal as if excessive boil off is
> perhaps coming from the frosting stack.
>
> Is this a concern? Could it be weather related as we've has a series of
> winter storms and cold temps (low atmospheric pressure?)?
>
> Pic attached...
>
> --
> Ken Knott
> Department of Chemistry
> Analytical Services
> Virginia Tech
>
> (540)267-6502 (Cell)
> (540)231-0885 (Office)
>
Received on Sun Mar 01 2015 - 09:58:50 MST