Dear All Birck Users, The issue with the UltraPure Water system was determined to be data communication errors between the control panels of the UPW electronics. We believe this issue has been resolved by fixing an ethernet cable, and the UPW system has been stable all morning. Additionally, the cleanroom humidity has also stabilized at normal levels. Our UPW supply and cleanroom humidity have returned to stable levels and normal research may resume. Thank you for your patience. Birck Management From: BNC-all <bnc-all-bounces@ecn.purdue.edu> On Behalf Of Reger, Ronald K Sent: Wednesday, March 20, 2024 8:13 AM To: bnc-all@ecn.purdue.edu Subject: [BNC-all] FW: CLEANROOM HUMIDITY CONTROL UPW Facility Issue Dear Birck Users: The UltraPure Water system has experienced a fault and the system is down at this time. Engineering and facility staff members are working on the problem but users should know that, in addition to cleanroom humidification being out of control, no UPW water is available for processing. We will keep you updated as progress is made to restore the UPW system. Birck Management From: Bnc-facility-notice <bnc-facility-notice-bounces@ecn.purdue.edu<mailto:bnc-facility-notice-bounces@ecn.purdue.edu>> On Behalf Of Laorange, Greg A Sent: Tuesday, March 19, 2024 11:07 PM To: bnc-facility-notice@ecn.purdue.edu<mailto:bnc-facility-notice@ecn.purdue.edu> Cc: Beutel, Casey N <cnbeutel@purdue.edu<mailto:cnbeutel@purdue.edu>> Subject: [Bnc-facility-notice] CLEANROOM HUMIDITY CONTROL Some people who received this message don't often get email from galaorange@purdue.edu<mailto:galaorange@purdue.edu>. Learn why this is important<https://aka.ms/LearnAboutSenderIdentification> Good Evening, We are experiencing problems with the ultrapure water system that feeds our clean steam generator so we will not have humidity control for the cleanroom until this system is fixed. We will continue monitoring the water system and turn the clean steam generator back on when we get confirmation this problem has been fully resolved. Sorry for any inconvenience. Thanks Greg LaOrange Facility Engineer Purdue University Birck Nanotechnology Office: Phone 765-496-8329 Cell: Phone 574-870-7721