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<p class="MsoNormal"><span style="color:#1F497D">Hi Peter, <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">We have both embedded and surface mounted sliding doors, as well as “old school” hinged doors. Our puritans don’t like sliding doors at all, especially not the embedded door, because they are afraid
that we cannot clean the cavity properly and thus might have a particle pump. We have surface mounted sliding doors to three of our ISO 4 (“class 10”) rooms and have not detected any particle issue.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">From a cost-of-ownership point of view, the manual hinged doors are the cheapest option. The sliding doors need annual service visits.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">Best regards, <o:p>
</o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">Leif<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Arial","sans-serif";color:black"> <o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:8.0pt;font-family:"Arial","sans-serif";color:black">Leif Johansen<o:p></o:p></span></b></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:8.0pt;font-family:"Arial","sans-serif";color:#9B9B9B">Head of Operations, Ph.D.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Arial","sans-serif";color:black">DTU Danchip<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Arial","sans-serif";color:black">Nationalt Center for Mikro- and Nanofabrikation<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Arial","sans-serif";color:black">Ørsteds Plads, Byg. 347<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Arial","sans-serif";color:black">Building 347, Room 170<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Arial","sans-serif";color:black">Direct +45 45255713<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Arial","sans-serif";color:black"><a href="mailto:lesjo@danchip.dtu.dk"><span style="color:blue">lesjo@danchip.dtu.dk</span></a><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> labnetwork-bounces@mtl.mit.edu [mailto:labnetwork-bounces@mtl.mit.edu]
<b>On Behalf Of </b>Peter Hung<br>
<b>Sent:</b> 16. januar 2018 19:54<br>
<b>To:</b> labnetwork@mtl.mit.edu<br>
<b>Subject:</b> [labnetwork] Cleanroom Door<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US">Hi Everyone,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Our automatic sliding door separating the Class 5 (3520 particles/m^3) and Class 6 (35200 particles/m^3) areas is broken and we’re thinking of replacing it. The current doors are embedded in the wall and we’re thinking
of going with surface mount doors due to the lower cost. Does anyone know if there’s a reason to go with either a surface mount sliding door or an embedded door besides costs? Thank you so much!<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Peter Hung<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Member of the Technical Staff<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Microelectronics Reliability & Radiation Effects<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">The Aerospace Corporation<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><a href="mailto:Peter.hung@aero.org">Peter.hung@aero.org</a>
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">310.336.5238<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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