This issue has come up several times a
t our facility. Engineers do not want to go up to change a belt and cite vi
sible losses in the
ducts as a source of exposure. They do not know what might be exposed to and they are right. Design is the
key, once you have a
bad system, it can be difficult to work with. We have discussed off hour m
aintenance, but have nothing in writing. Never even discussed LOTO of fume
hoods, perhaps out of fear of Faculty backlash. Saturdays and Sundays are a
good time to perform maintenance,
but what if someone has left something in the<
/st1:PersonName> hood, running, uncapped, etc. Are the trades’ capable of recognizing chemical hazards
in the lab? Abating the hazard without the lab staff?
We have locked machine rooms at the penthouse, but roof hatches
(not bulk head) are not locke
d. Parapet also adds to concerns of exposure.
I can say that we have multi million d
ollar project ongoing to install strobic fans which may eliminate the
need for maintenance and frequent belt changes. These new fans have redundancy built in and eject exhaus
t well out of the building env
elope. I can’t wait to see how they
perform and the noise t
hey will produce.<
I like the
University model for lab hood LOTO, but how doe
s this work in practice? Who handles the complaints from PI’s claiming they have grant deadlines
Have a nice weekend all
S-L Discussion List [mailto:DCHAS-L**At_Symbol_Here**LIST.UVM.EDU]
On Behalf Of Wawzyniecki Jr,
Sent: Friday, October 30, 20
09 9:55 AM
Subject: [DCHAS-L] Roof top
exhaust fan maintenance Policy
In general, maintenance staff working on rooftop fume ho
od exhaust equipment have indicated their concerns about being
on a roof, and possibly being exposed to whatever is being vented. <
In a more specific laboratory situation, involving MOCVD
(metal organic chemical vapor
deposition), we have a lock-out
tag-out policy, due to the se
verity of the toxic gases invo
- Does anyo
ne else have MOCVD labs, and to what extent are controls in place for prote
ction of workers on roof tops?
es anyone else employ a LOTO policy?
- Are roof tops key-accessible only?
Thanks for the feedback.
-Stefan Wawzyniecki, CIH, CHMM<