From jhaydon at snf.stanford.edu Thu Feb 14 08:13:26 2008 From: jhaydon at snf.stanford.edu (jhaydon at snf.stanford.edu) Date: Thu, 14 Feb 2008 08:13:26 -0800 Subject: Comment wbsilicide SNF 2008-02-14 08:13:25: testing left hotpot do not use Message-ID: From jhaydon at snf.stanford.edu Fri Feb 15 10:14:04 2008 From: jhaydon at snf.stanford.edu (jhaydon at snf.stanford.edu) Date: Fri, 15 Feb 2008 10:14:04 -0800 Subject: Problem wbsilicide SNF 2008-01-03 09:12:35: Faulty thermometer in left side hot pot Message-ID: controller working now installed new RTD From shwong at snf.stanford.edu Tue Feb 19 08:21:27 2008 From: shwong at snf.stanford.edu (shwong at snf.stanford.edu) Date: Tue, 19 Feb 2008 08:21:27 -0800 Subject: Problem wbsilicide SNF 2008-02-19 08:21:27: spin dryer doesn't seem to work Message-ID: From maurice at snf.stanford.edu Fri Feb 22 10:13:50 2008 From: maurice at snf.stanford.edu (maurice at snf.stanford.edu) Date: Fri, 22 Feb 2008 10:13:50 -0800 Subject: Shutdown wbsilicide SNF 2008-02-22 10:13:49: no DI water Message-ID: From mtang at snf.stanford.edu Fri Feb 22 14:20:44 2008 From: mtang at snf.stanford.edu (mtang at snf.stanford.edu) Date: Fri, 22 Feb 2008 14:20:44 -0800 Subject: Shutdown wbsilicide SNF 2008-02-22 10:13:49: no DI water Message-ID: DI water back on! From mtang at snf.stanford.edu Sat Feb 23 21:54:43 2008 From: mtang at snf.stanford.edu (mtang at snf.stanford.edu) Date: Sat, 23 Feb 2008 21:54:43 -0800 Subject: Problem wbsilicide SNF 2008-02-23 21:54:42: wbsilicide being decontaminated Message-ID: While wbdiff is shutdown, Robin is starting decontamination procedures on wbsilicide, so that it can be used for pre-diffusion cleans. This will consist of pouring 5:1:1 H2O:HCl:H2O2 into the hot pots, HF tank, and dump rinsers. She's generously agreed to start this -- whoever needs this might need to finish it. I now see a note that the spin dryer is not functional. Uh oh. I m afraid that if this is indeed the case, users will have to walk their wafers over to the wbdiff spin dryer. Moreover, I've also been informed that we're out of 50:1 HF. (Gee, no end of fun!) Robin has kindly volunteered Eric to mix up a batch tonight, if needed. I'll come in the morning to stock up. M Deepest apologies for the inconvenience. From shott at snf.stanford.edu Sun Feb 24 09:15:55 2008 From: shott at snf.stanford.edu (shott at snf.stanford.edu) Date: Sun, 24 Feb 2008 09:15:55 -0800 Subject: Problem wbsilicide SNF 2008-02-24 09:15:54: Leak under wbsilicide .... FuseSeal, I think Message-ID: This morning I received a call at 6:40 a.m. from Work Control reporting a Lab Leak Detector alarm. I got organized and got in a bit after 7:00. The TraceTek was reading 90, which I acknowledged but did not yet reset, which placed it in the fingerwall between wbdiff and wbsilicide. After a little looking around, I realized that the source of the leak was underneath wbsilicide and had gradually worked it's way into the fingerwall between the two metal floor plates where, I think, it had triggered the TraceTek. So, I started with the SpilFyter strips and determined that it was both low in pH and contained oxidizer .... OK, sulfuric or hydrogen chloride mixed with peroxide. So, bedecked in green boots and yellow gloves, I carefully mop up with various absorbent layers and then used the purple acid neutralization solution as best as I could. I believe that it is in pretty good shape .... but I would still never crawl under there or lay on my back under there without some sort of plastic/absorbent underneath me. To the best of my knowledge, while I saw no dripping, I believe that the source of the leak is one of the FuseSeal joints coming out the bottom of that sink. In fact, one of the joints looked damp and I tested it with normal pH paper and found it to measure a pH of near 1. I've marked the joint in question with a couple of the red "twist ties". I've also placed a nalgene tub on top of a couple of yellow abosorbent pads. While I will write this up (and likely use this text as my problem report), I see no reason to shutdown the sink at this poiint. If anything, catching some liquid in the tub will help to confirm if my hypothesis of the location of the leak is correct. Thanks, John From gth at snf.stanford.edu Sun Feb 24 11:12:40 2008 From: gth at snf.stanford.edu (gth at snf.stanford.edu) Date: Sun, 24 Feb 2008 11:12:40 -0800 Subject: Problem wbsilicide SNF 2008-02-24 11:12:40: please remove sign on SRD Message-ID: if it is functional (as John Shott says), please remove the sign. This sign has ben there on the SRD forever now. thanks John for your remarks about the wb-silicide From uli at snf.stanford.edu Mon Feb 25 14:07:09 2008 From: uli at snf.stanford.edu (uli at snf.stanford.edu) Date: Mon, 25 Feb 2008 14:07:09 -0800 Subject: Problem wbsilicide SNF 2008-02-23 21:54:42: wbsilicide being decontaminated Message-ID: wbsilicide is wbsilicide again From jhaydon at snf.stanford.edu Tue Feb 26 05:58:55 2008 From: jhaydon at snf.stanford.edu (jhaydon at snf.stanford.edu) Date: Tue, 26 Feb 2008 05:58:55 -0800 Subject: Problem wbsilicide SNF 2008-02-24 11:12:40: please remove sign on SRD Message-ID: sign has been removed From uli at snf.stanford.edu Tue Feb 26 13:39:32 2008 From: uli at snf.stanford.edu (uli at snf.stanford.edu) Date: Tue, 26 Feb 2008 13:39:32 -0800 Subject: Comment wbsilicide SNF 2008-02-14 08:13:25: testing left hotpot do not use Message-ID: tested, RTD replaced From uli at snf.stanford.edu Tue Feb 26 13:40:03 2008 From: uli at snf.stanford.edu (uli at snf.stanford.edu) Date: Tue, 26 Feb 2008 13:40:03 -0800 Subject: Problem wbsilicide SNF 2008-02-19 08:21:27: spin dryer doesn't seem to work Message-ID: it is working From uli at snf.stanford.edu Tue Feb 26 13:40:50 2008 From: uli at snf.stanford.edu (uli at snf.stanford.edu) Date: Tue, 26 Feb 2008 13:40:50 -0800 Subject: Problem wbsilicide SNF 2008-02-24 09:15:54: Leak under wbsilicide .... FuseSeal, I think Message-ID: