That is a reasonable approach - as long as you have established performance and use criteria for the specific snorkel. I like to have that written in a standard format, and also apply the process to all other ventilation devices, including fume hoods. As noted, that includes the user keeping it VERY close to the release point of the agent to be controlled.
Peter Zavon, CIH
Penfield, NY
PZAVON**At_Symbol_Here**Rochester.rr.com
-----Original Message-----
From: ACS Division of Chemical Health and Safety [mailto:DCHAS-L**At_Symbol_Here**PRINCETON.EDU] On Behalf Of Benjamin G Owens
Sent: Wednesday, February 27, 2019 8:37 PM
To: DCHAS-L**At_Symbol_Here**PRINCETON.EDU
Subject: Re: [DCHAS-L] 4 more Re: [DCHAS-L] Regulations for Snorkels
As has been stated, there aren't specific test requirements for task exhaust (snorkels), but I would measure the face velocity when they are installed. I would then re-measure once or twice a year and compare to the initial face velocity as a means of tracking performance relative to the initial conditions. This will help alert you to maintenance/performance issues.
Regards,
Ben
----------------------------------
Ben Owens
EH&S Assistant Director, Laboratory Safety
Environmental Health and Safety Dept., MS 328
University of Nevada, Reno
775-327-5196 (office)
775-843-2113 (cell)
-----Original Message-----
From: ACS Division of Chemical Health and Safety On Behalf Of Chris Jakober
Sent: Wednesday, February 27, 2019 11:21 AM
To: DCHAS-L**At_Symbol_Here**PRINCETON.EDU
Subject: Re: [DCHAS-L] 4 more Re: [DCHAS-L] Regulations for SnorkelsHi Sammye,
RE: "The project manager asked me today if there were any regulations for testing them because the lab supplier is only planning on testing the hoods."
If the snorkels are being used to control exposures, CalOSHA expects them to be performance certified annually. I'm not sure if that's an expectation in other states. The code reference is 8CCR5143(a)(5).
https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.dir.ca.gov%2Ftitle8%2F5143.html&data=01%7C01%7Cbowens%40UNR.EDU%7Cfde7f665cf114f264c0608d69cedc2a2%7C523b4bfc0ebd4c03b2b96f6a17fd31d8%7C1&sdata=BNBKk0kj5Gbm0%2FrdFsAXYQ9bJCTxhu2Sml9%2FdisJG%2B0%3D&reserved=0
Hope this helps,
Chris
Chris Jakober, Ph.D.
Air Pollution Specialist
Monitoring and Laboratory Division
California Air Resources Board
1900 14th Street ‰?? Sacramento, CA 95811
chris.jakober**At_Symbol_Here**arb.ca.gov
O: 916-324-1279
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