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Hello All,</div>
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Thanks for all the good comments and suggestions.</div>
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As several of you (and our own EHS) suggested, we have entrusted the cylinder to our toxic waste removal company. We are still a bit leery of sending out a potentially pressurized cylinder (albeit a small one) to be disposed of by possibly rough methods, but
that is what was recommended.</div>
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If we hear any additional news about it's final disposition, I'll be sure to let everyone know.</div>
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Again, thanks for all the help and good recommendations.<br>
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Mac Hathaway</div>
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Harvard CNS<br>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Collins, Deon <deonc69@illinois.edu><br>
<b>Sent:</b> Thursday, July 20, 2023 2:55 PM<br>
<b>To:</b> Hathaway, Malcolm R <hathaway@cns.fas.harvard.edu>; Labnetwork Mailing List <labnetwork@mtl.mit.edu><br>
<b>Subject:</b> RE: TTIP Cylinder Overheated - Request for Advise</font>
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<p class="x_MsoNormal">I would have the bottle disposed of ASAP. The structural integrity of the cylinder has been compromised.
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<p class="x_MsoNormal"><b><span style="color:#002060; text-transform:uppercase">Deon D. Collins</span></b></p>
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<i>FACILITY MANAGER</i></span></p>
<p class="x_MsoNormal"><i><span style="color:#002060">The Grainger College Of Engineering UIUC</span></i><span style="color:#002060"><br>
</span><span style="color:#002060">Holonyak Micro & Nanotechnology Lab</span><span style="color:#1F497D"><br>
</span><span style="color:#13294B">208 N Wright St Rm. 1114 | MC-249</span><span style="color:#1F497D"><br>
</span><span style="color:#13294B">Urbana, IL 61801</span><span style="color:#1F497D"><br>
</span><span style="color:#13294B">217-300-7531 | </span><span style="color:#1F497D"><a href="mailto:deonc69@illinois.edu"><span style="color:#0563C1">deonc69@illinois.edu</span></a><br>
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<p class="x_MsoNormal"><b>From:</b> labnetwork <labnetwork-bounces@mtl.mit.edu> <b>
On Behalf Of </b>Hathaway, Malcolm R<br>
<b>Sent:</b> Tuesday, July 18, 2023 4:52 PM<br>
<b>To:</b> Labnetwork Mailing List <labnetwork@mtl.mit.edu><br>
<b>Subject:</b> [labnetwork] TTIP Cylinder Overheated - Request for Advise</p>
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<p class="x_MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:12.0pt; font-family:"Times New Roman",serif; color:black">Hey all,<br>
<br>
We (not CNS, but another lab) have an issue with a TTIP cylinder (Cambridge Nano/swagelok-style) which got over-heated to an unknown temp, whereupon the bottle acquired a bulge. It was closed at the time, and so is still under pressure to an unknown degree.
The bottle label melted, for reference.<br>
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Questions: <br>
<br>
Are the contents likely to be decomposition products?<br>
Would these products be flammable or explosive?<br>
Can a bottle burst under the flexural stress of slow depressurization?<br>
Is there a safe way to depressurize?<br>
<br>
We came up with the idea of attaching a second valve (these are all VCR), and alternating opening inner valve (then closing) and opening outer valve (then closing), to step-wise vent the bottle. Has anyone heard of such a technique causing the bottle to burst
along the way?<br>
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Suggestion welcome.<br>
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<br>
Mac</span><span style="font-size:12.0pt; color:black"></span></p>
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<p style="line-height:115%"><span class="x_contentpasted0"><span style="color:black">Mac Hathaway</span></span><span style="color:black"></span></p>
<p style="line-height:115%"><span class="x_contentpasted0"><span style="color:black">Senior Process and Systems Engineer</span></span><span style="color:black"></span></p>
<p style="line-height:115%"><span class="x_contentpasted0"><span style="color:black">Harvard Center for Nanoscale Systems</span></span><span style="color:black"></span></p>
<p style="line-height:115%"><span class="x_contentpasted0"><span style="color:black">11 Oxford St.</span></span><span style="color:black"></span></p>
<p style="line-height:115%"><span class="x_contentpasted0"><span style="color:black">Cambridge, MA 02138</span></span><span style="color:black"></span></p>
<p style="line-height:115%"><span class="x_contentpasted0"><span style="color:black">617-495-9012</span></span><span style="color:black"></span></p>
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