<div dir="ltr">Dear All,<div><br></div><div>Thank you everyone for all your responses on toxic gas tubing for Cl2/BCl3/HBr.</div><div>I received many responses and may write directly write to them for subsequent queries.<br></div><div><br></div><div>To summarize: Overall recommendation and also mostly required by code as well to have co-axial for these gases, along with heat tracing for BCl3, and scrubbing, with VCR fittings.</div><div><br></div><div>Thanks,</div><div>Kamal</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Sep 14, 2020 at 9:43 AM Kamal Yadav <<a href="mailto:kamal.yadav@gmail.com" target="_blank">kamal.yadav@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Dear All,<div><br></div><div>We will be installing SS gas tubing for Cl2, BCl3, HBr, SiH4.</div><div><br></div><div>I have some experience in how industry does it, but wanted to know how different universities do this. From some prior posts, I got to know University of Michigan has co-axial tubing for all these gases and every connector location for these gases is exhausted as well at their facility</div><div><br></div><div>My queries are: </div><div>1. Is this how most of the Universities do it or there are places where these gases are in single tubing [non co-axial or double contained]. </div><div>2. Also if you do orbital welding or just bending of the tubes?<br clear="all"><div><br></div><div>I have been informed it is based on the fire code of the city or county, but it's not apparent from those documents.</div><div><br></div><div>Thanks for your help.</div><div><br></div>-- <br><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div>Thanks,<br></div><div>Kamal </div><div><br></div></div></div></div></div></div></div></div></div>
</blockquote></div></div><br clear="all"><div><br></div>-- <br><div dir="ltr"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div>Thanks,<br></div><div>Kamal </div><div><br></div></div></div></div></div></div></div></div>