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<div><font class="ContentPasted0" face="Times New Roman,Times,serif">Hey all,<br class="ContentPasted0">
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We (not CNS, but another lab) have an issue with a TTIP cylinder (Cambridge Nano/</font><font class="ContentPasted0" face="Times New Roman,Times,serif"><font class="ContentPasted0" face="Times New Roman,Times,serif">swagelok</font>-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 class="ContentPasted0">
<br class="ContentPasted0">
Questions: <br class="ContentPasted0">
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Are the contents likely to be decomposition products?<br class="ContentPasted0">
Would these products be flammable or explosive?<br class="ContentPasted0">
Can a bottle burst under the flexural stress of slow depressurization?<br class="ContentPasted0">
Is there a safe way to depressurize?<br class="ContentPasted0">
<br class="ContentPasted0">
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 class="ContentPasted0">
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Suggestion welcome.<br class="ContentPasted0">
<br class="ContentPasted0">
<br class="ContentPasted0">
Mac<br class="ContentPasted0">
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<div class="ContentPasted0">-- <br class="ContentPasted0">
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<p style="font-size:11pt;font-family:Calibri,sans-serif;margin:0;line-height:115%">
<span class="ContentPasted0">Mac Hathaway</span></p>
<p style="font-size:11pt;font-family:Calibri,sans-serif;margin:0;line-height:115%">
<span class="ContentPasted0">Senior Process and Systems Engineer</span></p>
<p style="font-size:11pt;font-family:Calibri,sans-serif;margin:0;line-height:115%">
<span class="ContentPasted0">Harvard Center for <span class="ContentPasted0">Nanoscale</span> Systems</span></p>
<p style="font-size:11pt;font-family:Calibri,sans-serif;margin:0;line-height:115%">
<span class="ContentPasted0">11 Oxford St.</span></p>
<p style="font-size:11pt;font-family:Calibri,sans-serif;margin:0;line-height:115%">
<span class="ContentPasted0">Cambridge, MA<span class="ContentPasted0"> </span>02138</span></p>
<p style="font-size:11pt;font-family:Calibri,sans-serif;margin:0;line-height:115%">
<span class="ContentPasted0">617-495-9012</span></p>
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