Sorry for the emails For clarification all fume hoods and hazardous processes can continue as normal. From: Voorhis, Mark L. Sent: Sunday, February 7, 2021 1:01 PM To: bnc-facility-notice@ecn.purdue.edu Cc: Voorhis, Mark L. <mvoorhis@purdue.edu> Subject: RE: NOTICE - The East and West Lab Wings Are Open for Research Dear BNC Lab Users, All labs are now open for use. The lab area heating system that warms up the outside subzero air failed allowing below freezing air to enter the air handling system and tripped off manual freeze protection sensors. The heating system is operational and all air handling system are operational. I want to thanks BNC staff engineering and PUPF trades that responded to the building alarms. Also thank you for your patience during this bitter cold weather. Best Regards, Mark Voorhis Building Manager Purdue University Birck Nanotechnology Center Office: (765) 494-3036

From My I Pad

From: Bnc-facility-notice <bnc-facility-notice-bounces@ecn.purdue.edu<mailto:bnc-facility-notice-bounces@ecn.purdue.edu>> On Behalf Of Voorhis, Mark L. Sent: Sunday, February 7, 2021 8:09 AM To: bnc-facility-notice@ecn.purdue.edu<mailto:bnc-facility-notice@ecn.purdue.edu> Subject: [Bnc-facility-notice] NOTICE - The East and West Lab Wing Air Handling System Shut Down Due to Cold Temperatures Both east and west make up air handling systems are currently shut down due to low temperature freeze protection tripping them off. We have negative pressure in the atrium space increasing difficulty opening doors. We have trades responding to the issue. Until future notice all general research labs (listed below) will be closed with no fume hood or hazardous processes. 1031 1039 1043 1045 1069 1077 1081 1083 1089 1089A 1100A 1153 1157 1217 1227 1233 1235 1237 1239 1261 1261A 1263 1265 1267 1269 1273 2031 2037 2043 2069 2077 2081 2087 2087A 2087B I will send an update once we understand what happened. Mark Voorhis Building Manager Purdue University Birck Nanotechnology Center Office: (765) 494-3036