From:
Kelsey Mesa <kmesa26**At_Symbol_Here**GMAIL.COM>
Subject:
[DCHAS-L] Beryllium research- engineering controls
Date:
May 2, 2023 23:52 UTC
Reply-To:
ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
Message-ID:
<CAKgZEZCSycYg2eqy+ZpyDTWr2Eoz7SBHoSSvEeB8nXvAOQHP9g**At_Symbol_Here**mail.gmail.com>
In-Reply-To:
Hello,
Hoping to connect with anyone who has academic or non-industry groups working with beryllium salts. Including a description as well as some specific questions below.
UC Berkeley has a group working with FLiBe. We have an exposure plan and standard operating procedures, this includes working in a glove box train with the boxes set up for negative pressure. A request has been made to use the boxes in positive pressure while they look into a potential leak as well as carry out some level of experiments. We have some concerns with the request and are curious how others operate their boxes.
- When using a glove box to handle beryllium (samples that could generate particles/dust), is there a standard pressure set up such as positive or negative?
- If the box is set up with positive pressure, are there additional controls (particularly engineering) that are established to protect workers from exposure? Any specifics are much appreciated.
- If not using glove boxes, any examples of ventilated enclosures that operate in positive pressure would also be welcome with a description of the controls.
We are hoping to collect some different examples of set ups to compare and better provide recommendations to the group for managing this hazard safely.
Appreciate your help!
Kelsey
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