| About This Archive | | DCHAS-L 2020 Index | | DCHAS-L Yearly Index | |
Check out Safety Emporium for your N95, N99, and face shield needs.
|
Previous by Date: Subject: Re: [DCHAS-L] Chemical Fume Hood Alarm Set Points Date: Thursday, October 22, 2020 at 5:56:00 AM Author: Richard Palluzi <000006c59248530b-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU> |
Next by Date: Subject: [DCHAS-L] Last week to register Date: Thu, 22 Oct 2020 07:16:06 -0400 Author: Richard Palluzi |
API 500 requires 6 air changes/hour and hoods that have face velocities less than 100 FPM often fail to work effectively when they have a lot of equipment in the hood. (empty fine; crowded not so well.)
See “Why Don’t We Just Put It in the Hood?”: Issues with Degrading Hood Effectiveness Due to Equipment Placement, (ACS J. Chemical Health & Safety, Jan, 2020)
Richard Palluzi
72 Summit Drive
Basking Ridge, NJ 07920
rpalluzi**At_Symbol_Here**verizon.net
908-285-3782
From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU> On Behalf Of Dr Bob
Sent: Wednesday, October 21, 2020 7:36 PM
To: DCHAS-L**At_Symbol_Here**Princeton.EDU
Subject: Re: [DCHAS-L] Chemical Fume Hood Alarm Set Points
Hello Debra!
Many better hoods can be set at 18 inches and 80 fpm. Below this face velocity, bad things can begin to happen. Remember that at around 5 air changes per minute or lower, corrosion and explosions become much more likely.
I'll send more stuff from work in AM!
Bob Haugen
Sent from my Samsung Galaxy , an AT&T LTE smartphone
-------- Original message --------
From: Debra M Decker <00001204b93f9a5e-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU>
Date: 10/21/20 6:47 PM (GMT-05:00)
Subject: Re: [DCHAS-L] Chemical Fume Hood Alarm Set Points
To tag off Ralph's list, I'd also want to know if hood sashes are horizontal sliding or vertical rising or combination sashes.
Debbie
On Oct 21, 2020 11:31 AM, Jordan Sumliner <0000139f25c2a3e1-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU> wrote:
Good Afternoon,
Our chemical hygiene plan as well as other resources indicates the average face velocity should be between 80-120 LFM when sash is at 18 inches, and we do train users to check the local air flow monitor before use. If the monitor shows an air flow outside that range, we would not want users to use the chemical fume hood (exceptions are for equipment setup) and to report it.
In addition, we are updating our alarm set points at a local (the end user is alerted) and at a system level (meaning EHS and facilities are alerted) for a higher level of control over these critical engineering controls.
I would like to get opinions on what you have local air flow monitors set to alarm at (high and low), if you differentiate at a system level and any considerations to make. We do not have occupancy sensors on our hoods, but some are setup to adjust a damper when there is a drop in air flow. The other are constant volume with no adjustments possible with dampers ..
Thanks,
Jordan Sumliner
Associate Environmental, Health, Safety and Sustainability Specialist
Environmental, Health, Safety and Sustainability
GSK
14200 Shady Grove Road, Rockville, MD 20850
Email jordan.x.sumliner**At_Symbol_Here**gsk.com
GSK monitors email communications sent to and from GSK in order to protect GSK, our employees, customers, suppliers and business partners, from cyber threats and loss of GSK Information. GSK monitoring is conducted with appropriate confidentiality controls and in accordance with local laws and after appropriate consultation.
--- For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at membership**At_Symbol_Here**dchas.org Follow us on Twitter **At_Symbol_Here**acsdchas
On Oct 21, 2020 11:31 AM, Jordan Sumliner <0000139f25c2a3e1-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU> wrote:
Good Afternoon,
Our chemical hygiene plan as well as other resources indicates the average face velocity should be between 80-120 LFM when sash is at 18 inches, and we do train users to check the local air flow monitor before use. If the monitor shows an air flow outside that range, we would not want users to use the chemical fume hood (exceptions are for equipment setup) and to report it.
In addition, we are updating our alarm set points at a local (the end user is alerted) and at a system level (meaning EHS and facilities are alerted) for a higher level of control over these critical engineering controls.
I would like to get opinions on what you have local air flow monitors set to alarm at (high and low), if you differentiate at a system level and any considerations to make. We do not have occupancy sensors on our hoods, but some are setup to adjust a damper when there is a drop in air flow. The other are constant volume with no adjustments possible with dampers ..
Thanks,
Jordan Sumliner
Associate Environmental, Health, Safety and Sustainability Specialist
Environmental, Health, Safety and Sustainability
GSK
14200 Shady Grove Road, Rockville, MD 20850
Email jordan.x.sumliner**At_Symbol_Here**gsk.com
GSK monitors email communications sent to and from GSK in order to protect GSK, our employees, customers, suppliers and business partners, from cyber threats and loss of GSK Information. GSK monitoring is conducted with appropriate confidentiality controls and in accordance with local laws and after appropriate consultation.
--- For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at membership**At_Symbol_Here**dchas.org Follow us on Twitter **At_Symbol_Here**acsdchas
On Oct 21, 2020 11:31 AM, Jordan Sumliner <0000139f25c2a3e1-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU> wrote:
Good Afternoon,
Our chemical hygiene plan as well as other resources indicates the average face velocity should be between 80-120 LFM when sash is at 18 inches, and we do train users to check the local air flow monitor before use. If the monitor shows an air flow outside that range, we would not want users to use the chemical fume hood (exceptions are for equipment setup) and to report it.
In addition, we are updating our alarm set points at a local (the end user is alerted) and at a system level (meaning EHS and facilities are alerted) for a higher level of control over these critical engineering controls.
I would like to get opinions on what you have local air flow monitors set to alarm at (high and low), if you differentiate at a system level and any considerations to make. We do not have occupancy sensors on our hoods, but some are setup to adjust a damper when there is a drop in air flow. The other are constant volume with no adjustments possible with dampers .
Thanks,
Jordan Sumliner
Associate Environmental, Health, Safety and Sustainability Specialist
Environmental, Health, Safety and Sustainability
GSK
14200 Shady Grove Road, Rockville, MD 20850
Email jordan.x.sumliner**At_Symbol_Here**gsk.com
GSK monitors email communications sent to and from GSK in order to protect GSK, our employees, customers, suppliers and business partners, from cyber threats and loss of GSK Information. GSK monitoring is conducted with appropriate confidentiality controls and in accordance with local laws and after appropriate consultation.
--- For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at membership**At_Symbol_Here**dchas.org Follow us on Twitter **At_Symbol_Here**acsdchas
--- For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at membership**At_Symbol_Here**dchas.org Follow us on Twitter **At_Symbol_Here**acsdchas
--- For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at membership**At_Symbol_Here**dchas.org Follow us on Twitter **At_Symbol_Here**acsdchas
Previous post | Top of Page | Next post