Can anyone recommend a floor coating that passes category 2 containment (ie not wood) that is resistant to liquid
nitrogen. Ie you can fill dewars on without cracking. Various solutions our estates people have fitted have all proved
unsatisfactory.
Bets wishes
Nick
--
Prof Nicholas H. Keep
This has been a problem for us too. Sorry, I don't have a solution to offer
except, recently, we have provided metal buckets filled with a layer of
aquarium gravel at each station and encouraged users to dump their excess
nitrogen there instead of on the floor.
Richard
On Feb 16, 2011, at
We went through a building renovation and this has been a problem for us
too. In the old days, our building was simply sealed concrete - and you
could do anything with it with no issues. Now, it's an epoxy floor, but
really what happens is the liquid nitrogen cools it down and breaks the
BSD
Dear Nicholas,
Three possible solutions that I have seen:
1. A sheet of stainless steel under the filling area over concrete
(I think I saw that at the ESRF).
2. A throw-away layer of linolium that you replace every few
months. Sort of like an ablation layer on a heat shield
: [ccp4bb] Liquid nitrogen resistant flooring
To: CCP4BB@JISCMAIL.AC.UK
We went through a building renovation and this has been a
problem for us
too. In the old days, our building was simply sealed
concrete - and you
could do anything with it with no issues. Now, it's an
epoxy floor
-
From: CCP4 bulletin board on behalf of Nicholas Keep
Sent: Wed 2/16/2011 12:20 PM
To: CCP4BB@JISCMAIL.AC.UK
Subject: [ccp4bb] Liquid nitrogen resistant flooring
Can anyone recommend a floor coating that passes category 2 containment (ie not
wood) that is resistant to liquid
nitrogen. Ie
this helps,
Ralf
-Original Message-
From: CCP4 bulletin board [mailto:CCP4BB@JISCMAIL.AC.UK] On Behalf Of
Nicholas Keep
Sent: 16 February 2011 12:21
To: CCP4BB@JISCMAIL.AC.UK
Subject: [ccp4bb] Liquid nitrogen resistant flooring
Can anyone recommend a floor coating that passes category 2
At ALS, we have a red epoxy-on-concrete floor, which is lN2 resistant
but still cracks if abused. However, we have not repainted it for many
years now. We found that one very good way to extend the life of the
floor is to keep users from dumping their cryogens onto it. In
Berkeley, it is
