September 2007 - BNC-all - ecn.purdue.edu

Vibration Potential Tuesday 9-11-07
by Weaver, John R 07 Sep '07

07 Sep '07

The construction project across State Street will be dong heavy pile-driving work on Tuesday, 9/11/07. While we don't expect it to have an impact (pun intended) on vibration levels at BNC, that possibility does exist. Please be aware of this potential issue. Thank you for your patience, John John R. Weaver Facility Manager Birck Nanotechnology Center jrweaver(a)purdue.edu 765 494-5494 ________________________________ From: Zachary, Joseph B [mailto:jbzachary@purdue.edu] Sent: Friday, September 07, 2007 11:29 AM To: Weaver, John R; Buck, Charles R Subject: Construction Noise John, Charles, I want to make you aware that on Tues. 9/11/07 the contractor at the Replacement Student Housing Project will be driving some piling to protect a couple of holes dug in First street. That will occur a couple of blocks away from where you are. It shouldn't be all day and I don't know if you will even hear anything or not, but I want to make you aware. Joe Zachary General Construction Inspector Purdue University Office: 765-494-0950 Cell: 765-479-0126 Fax: 765 494-0918

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Ultrapure Water and Acid Hoods
by John Weaver 07 Sep '07

07 Sep '07

As stated previously, we are having issues with the ultrapure water coming back into spec. Currently we are operating at 15.4 megohm resistivity (18.2 is theoretical, where we usually operate). TOC is operating at 1ppB, while we normally operate at 225 ppT. This means that we have slightly higher organic levels in the water and quite a few more ionic impurities. The quality is continually improving, and we will let you know when the quality is back where it belongs. It is perfectly acceptable to perform non-sensitive operations with this water. FOR THIS REASON, WE ARE NOW OPENING ALL ACID HOODS FOR NORMAL OPERATION. The facility is now fully operational, with the understanding that our water quality is not yet back to our normal, specified levels. Thank you for your understanding and cooperation as we work through this issue. John Weaver John R. Weaver Facility Manager Birck Nanotechnology Center Purdue University (765) 494-5494 jrweaver(a)purdue.edu

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Labs/Cleanroom/Hoods
by Jennifer Monahan 06 Sep '07

06 Sep '07

*Update for BNC PM-Shutdown --* Necessary maintenance is complete, the BNC chemical exhaust systems and toxic gas systems have returned to normal. **All labs, the cleanroom, and solvent hoods have reopened (thus all door signs have been removed).** Unfortunately, the quality of the Ultra Pure Water (UPW) system has not yet stabilized. **As a result, the acid hoods remain closed until further notice.** We will monitor the UPW system over night and update all users on the status by Friday at noon. Thank you for your patience during this preventative maintenance process and your understanding during this extended delay. Sincerely -- BNC Staff

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toxic gases online
by Kenny Schwartz 06 Sep '07

06 Sep '07

Hi to all, As of 2:30 9/6 all gases are online at BNC Thanks Kenny Schwartz Birck Nanotechnology Center Purdue University PH 765-496-1174 kfschwar(a)purdue.edu

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Schedule Reminder/Update
by John Weaver 05 Sep '07

05 Sep '07

Please remember that the labs will be closed tomorrow, 6 Sept. 07. Please remove all chemicals and materials from hoods, biosafety cabinets, and exhausted enclosures by 4:00 PM today (Wednesday, 5 Sept 07). Ultrapure water will also be unavailable all day on Thursday, 6 Sept. 07. Everything should reopen at 8:00 AM on Friday, 7 Sept. 07. Thank you for your patience. John John R. Weaver Facility Manager Birck Nanotechnology Center Purdue University (765) 494-5494 jrweaver(a)purdue.edu

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