Monona - It was a lab bench system designed & installed abt 30 years ago. It collects the debris in an internal compartment. The compartment has to be emptied once in awhile (LOL). The system worked, but the staff were never given instruction or tools to clean it out properly. Kim Auletta Lab Safety Specialist EH&S Z=6200 Stony Brook University kauletta**At_Symbol_Here**notes.cc.sunysb.edu 631-632-3032 EH&S Web site: http://www.stonybrook.edu/ehs/lab/ Remember to wash your hands! From: ACTSNYC**At_Symbol_Here**CS.COM To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU Date: 09/21/2010 09:39 AM Subject: Re: [DCHAS-L] Dental Schools and silica Sent by: DCHAS-L Discussion ListThat says the wrong engineer installed or designed the system. If the ducts were round with no right angle bends, and were sized for a 4000 l/m centerline velocity as ACGIH recommends, there would be no deposition. A lot of these desk-sized systems available off-the-shelf are not even close to good design. Monona In a message dated 9/21/2010 9:19:27 AM Eastern Daylight Time, kauletta**At_Symbol_Here**NOTES.CC.SUNYSB.EDU writes: The biggest problem I had with silica control in our dental school was cleaning out the local ventilation system. I had them get the small HEPA vacuum (the real kind) and that made a big improvement. Kim Auletta Lab Safety Specialist EH&S Z=6200 Stony Brook University kauletta**At_Symbol_Here**notes.cc.sunysb.edu 631-632-3032 EH&S Web site: http://www.stonybrook.edu/ehs/lab/ Monona - It was a lab bench system designed & installed abt 30 years ago. It collects the debris in an internal compartment. The compartment has to be emptied once in awhile (LOL). The system worked, but the staff were never given instruction or tools to clean it out properly.
Kim Auletta
Lab Safety Specialist
EH&S Z=6200
Stony Brook University
kauletta**At_Symbol_Here**notes.cc.sunysb.edu
631-632-3032
EH&S Web site: http://www.stonybrook.edu/ehs/lab/Remember to wash your hands!
From: ACTSNYC**At_Symbol_Here**CS.COM To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU Date: 09/21/2010 09:39 AM Subject: Re: [DCHAS-L] Dental Schools and silica Sent by: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
That says the wrong engineer installed or designed the system. If the ducts were round with no right angle bends, and were sized for a 4000 l/m centerline velocity as ACGIH recommends, there would be no deposition. A lot of these desk-sized systems available off-the-shelf are not even close to good design. MononaIn a message dated 9/21/2010 9:19:27 AM Eastern Daylight Time, kauletta**At_Symbol_Here**NOTES.CC.SUNYSB.EDU writes:
The biggest problem I had with silica control in our dental school was cleaning out the local ventilation system. I had them get the small HEPA vacuum (the real kind) and that made a big improvement.Kim Auletta
http://www.stonybrook.edu/ehs/lab/
Lab Safety Specialist
EH&S Z=6200
Stony Brook University
kauletta**At_Symbol_Here**notes.cc.sunysb.edu
631-632-3032
EH&S Web site:
Previous post | Top of Page | Next post