<div dir="ltr">Vito,<div><br></div><div>here at UofMichigan, we've done a couple of things with the benches, and the interlocking of them.</div><div><br></div><div>1) On some of the newer (vintage 2008 and newer), we're interlocking the E-stop control signal of the bench as part of our tool control network. This circuit shunts the electronics of the benches, but does not impact the QDR bath, spray nozzle, or sink/faucet.</div><div><br></div><div>2) On all of the older vintage benches, it's simply an honor system.</div><div><br></div><div>3) All of the benches have a stack-lite assembly (green lamp, see picture) that lets us see from the cleanroom, or outside hallways, if the bench has been enabled by a user. You shouldn't be at the bench unless the light is green. This is something we've just adopted in the last 6-8 months, so we're still doing some training on it.</div><div><br></div><div>4) In addition to the green lamp mentioned above, each primary bench in the process bay has a second lamp on the stack that is amber. This amber lamp is lit whenever our body count drops to less than three people. It's part of our "single user alert" system that we implemented as part of a safety program. This "helps" to alert the users that they're getting close to that "no user can process alone in a bench" criteria, since our fab area is so spread out. Again, this is an honor system, but it's worked well so far.</div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature"><div>Dennis Schweiger</div><div>University of Michigan/LNF</div><div> </div><div>734.647.2055 Ofc<br></div></div></div>
<br><div class="gmail_quote">On Wed, Sep 16, 2015 at 1:16 PM, Vito Logiudice <span dir="ltr"><<a href="mailto:vito.logiudice@uwaterloo.ca" target="_blank">vito.logiudice@uwaterloo.ca</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<div>Dear Colleagues,</div>
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<div>Our efforts to physically interlock our tools via our lab management platform (Badger in our case) is progressing well. In most cases we are interlocking computer monitors, keyboards or computer mice with good results. </div>
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<div>My team and I have discussed how to best interlock our numerous fume hoods but were unable to settle on any one approach. For safety reasons we certainly do not want to make the hoods entirely unavailable when not enabled by Badger; ie., we want to encourage
their use when lab users handle chemicals. However we do believe it would be beneficial to physically interlock them in some fashion to at least make them somewhat less appealing to use unless they are first enabled. I’ve searched past threads on this fantastic
network and while I came across some great related discussions I was unable to find anything which dealt specifically with hood interlocks. </div>
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<div>I’d greatly appreciate hearing from those of you whom have interlocked your hoods or are thinking of doing so soon. I’m curious to know what service or feature you may have tapped into on a typical hood setup that might include some combination of spin-coaters,
hot plates, heated/recirculating chemical baths, N2 guns, DI guns etc.</div>
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<div>Thanks very much for any insights.</div>
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<div>Best regards,</div>
<div>Vito</div>
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<div><font color="#000000"><font face="Calibri" style="font-size:14px"><font face="Calibri,sans-serif">--</font></font></font></div>
<div><font color="#000000"><font face="Calibri" style="font-size:14px"><font face="Calibri,sans-serif">Vito Logiudice </font>P.<font face="Calibri,sans-serif">Eng.</font></font></font></div>
<div><font color="#000000"><font face="Calibri"><font face="Calibri,sans-serif" style="font-size:14px">Director of Operations, Quantum NanoFab</font></font></font></div>
<div><font color="#000000"><font face="Calibri"><font face="Calibri,sans-serif" style="font-size:14px">University of Waterloo</font></font></font></div>
<div><font color="#000000"><font face="Calibri"><font face="Calibri,sans-serif" style="font-size:14px">Lazaridis QNC 1207</font></font></font></div>
<div><font color="#000000"><font face="Calibri"><font face="Calibri,sans-serif" style="font-size:14px">200 University Avenue West</font></font></font></div>
<div><font color="#000000"><font face="Calibri"><font face="Calibri,sans-serif" style="font-size:14px">Waterloo, ON Canada N2L 3G1</font></font></font></div>
<div><font color="#000000"><font face="Calibri"><font face="Calibri,sans-serif" style="font-size:14px">Tel.: <a href="tel:%28519%29%20888-4567%20%C2%A0ext.%2038703" value="+15198884567" target="_blank">(519) 888-4567 ext. 38703</a></font></font></font></div>
<div><span style="font-size:14px">Email: <a href="mailto:vito.logiudice@uwaterloo.ca" target="_blank">vito.logiudice@uwaterloo.ca</a></span></div>
<div><span style="font-size:14px">Website: </span><a href="https://fab.qnc.uwaterloo.ca" target="_blank">https://fab.qnc.uwaterloo.ca</a></div>
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