From nvgirish at snf.stanford.edu Mon Nov 13 10:53:11 2006 From: nvgirish at snf.stanford.edu (nvgirish at snf.stanford.edu) Date: Mon, 13 Nov 2006 10:53:11 -0800 Subject: Problem wbdiff SNF 2006-11-13 10:53:10: Dump Rinser leak Message-ID: There seems to be a DI water leak in the middle dump rinser. Bench is working ok. From jhaydon at snf.stanford.edu Tue Nov 14 09:08:59 2006 From: jhaydon at snf.stanford.edu (jhaydon at snf.stanford.edu) Date: Tue, 14 Nov 2006 09:08:59 -0800 Subject: Problem wbdiff SNF 2006-11-13 10:53:10: Dump Rinser leak Message-ID: leak fixed line came out of fitting From mdickey at snf.stanford.edu Wed Nov 15 06:05:47 2006 From: mdickey at snf.stanford.edu (mdickey at snf.stanford.edu) Date: Wed, 15 Nov 2006 06:05:47 -0800 Subject: Shutdown wbdiff SNF 2006-11-15 06:05:47: Leak Message-ID: Down for leak From jhaydon at snf.stanford.edu Wed Nov 15 10:02:03 2006 From: jhaydon at snf.stanford.edu (jhaydon at snf.stanford.edu) Date: Wed, 15 Nov 2006 10:02:03 -0800 Subject: Shutdown wbdiff SNF 2006-11-15 06:05:47: Leak Message-ID: could not find source of puddle bench does not seem to leak From shott at snf.stanford.edu Sat Nov 18 00:07:15 2006 From: shott at snf.stanford.edu (shott at snf.stanford.edu) Date: Sat, 18 Nov 2006 00:07:15 -0800 Subject: Problem wbdiff SNF 2006-11-18 00:07:14: Water leak ... Message-ID: Work control called at about 9:30 tonight wiht a lab leak alarm. I didn't get it until about 11:30 .... by that time, when I got in, Eric P had silenced the alarm reading 097. There appears to be 1-2 liters of water under wbdiff, but it is not obvious from where it is coming. I put down some more absorbent and tested for pH. It seems neutral ... at least where I could reach. We've got a clear leak .... at least under some circumstances. Now we just need to find from where. Thanks, John From lindaw at snf.stanford.edu Sat Nov 18 09:15:49 2006 From: lindaw at snf.stanford.edu (lindaw at snf.stanford.edu) Date: Sat, 18 Nov 2006 09:15:49 -0800 Subject: Problem wbdiff SNF 2006-11-18 09:15:48: right hot pot won't aspirate Message-ID: Could this have something to do with the leak? It appears to be dry under the bench right now. From shott at snf.stanford.edu Sat Nov 18 10:25:55 2006 From: shott at snf.stanford.edu (shott at snf.stanford.edu) Date: Sat, 18 Nov 2006 10:25:55 -0800 Subject: Problem wbdiff SNF 2006-11-18 09:15:48: right hot pot won't aspirate Message-ID: Found 1/2 inch line had come out of black 1/2 inch FastNTite fitting underneath the glove rinse section of the deck. I replaced the O-ring, reinsetred the line and hand tightened. I didn't use one of the little metal springs from the normal FastNTites on top of the "pressure piece" of the fitting. If we have a special top piece for chemical service fittings of this type I couldn't find it. If there is such a thing and we have them, they should be better labelled in the cabinet. Note: this fixed the aspirator. However, I notice that channel 2 of the DI resistivity monitor is in alarm. I don't know how to fix that. Also, just behind the aspirator valve that I repaired is a little 1/8 inch diameter teflon tube that goes nowhere but is flowing water into the base of the deck. That certainly looks suspicious to me, but I couldn't easily determine where the line was supposed to connect. So, I left it in that condition. Thanks, John Note: I have no confidence that the aspirator failure had anything to do with the leakage on the floor, so I am not going to clear that problem until there is more direct evidence that we have found and fixed a real source of that leakage. Thanks,John From shott at stanford.edu Sat Nov 18 12:08:32 2006 From: shott at stanford.edu (John Shott) Date: Sat, 18 Nov 2006 12:08:32 -0800 Subject: Problem wbdiff SNF 2006-11-18 09:15:48: right hot pot won't aspirate In-Reply-To: <20061118171549.ADE6A4C3B6@smtp2.stanford.edu> References: <20061118171549.ADE6A4C3B6@smtp2.stanford.edu> Message-ID: <455F6840.3030208@stanford.edu> An HTML attachment was scrubbed... URL: From king at snf.stanford.edu Wed Nov 22 23:59:19 2006 From: king at snf.stanford.edu (king at snf.stanford.edu) Date: Wed, 22 Nov 2006 23:59:19 -0800 Subject: Problem wbdiff SNF 2006-11-22 23:59:19: Out of 50:1 HF Message-ID: This is a courtesy note to anyone planning a furnace run or other clean operation that as of Wednesday eve 11/22 there's no 50:1 HF available in the chemical passthrough. FYI.... From robinhmb at yahoo.com Thu Nov 23 17:15:37 2006 From: robinhmb at yahoo.com (Robin King) Date: Thu, 23 Nov 2006 17:15:37 -0800 (PST) Subject: 50:1 HF outage ... In-Reply-To: <4565DA01.6010800@stanford.edu> Message-ID: <20061124011537.24267.qmail@web58715.mail.re1.yahoo.com> We could probably mix up some 50:1 using DI and 49% HF, doing an etch rate test on SiO2 to verify correct composition. --- John Shott wrote: --------------------------------- SNF Labmembers: I am sorry to report that not only are we currently out of 50:1 HF inthe chemical pass through ... but I am dismayed to discover that wehave no 50:1 HF in our bulk storage area. This is clearly a failure on our part and I can only tell you that wewill look into why this happened and take corrective action. I will also try to get in here on Friday to see if we have any chanceof getting some sort of emergency pickup on Friday ... I have no ideawhether our supplier Gallade Chemical will be open or not, but we shalltry. If any of you work in labs that may have any stockpiles of electronicgrade 50:1 HF and could make us an emergency loan, I'd be happy to hearfrom you. I personally apologize to any of you inconvenienced by our error andassure that we will do our best to replenish our stock as quickly aspossible. Sorry for this bad news, but I hope that you all will otherwise have ahappy long weekend, John ____________________________________________________________________________________ Do you Yahoo!? Everyone is raving about the all-new Yahoo! Mail beta. http://new.mail.yahoo.com From jhaydon at snf.stanford.edu Thu Nov 30 08:58:28 2006 From: jhaydon at snf.stanford.edu (jhaydon at snf.stanford.edu) Date: Thu, 30 Nov 2006 08:58:28 -0800 Subject: Problem wbdiff SNF 2006-11-18 00:07:14: Water leak ... Message-ID: I think leak is fixed probably caused by water spraying into plenum when draing acid time will tell