[labnetwork] Cleanroom recovery after smoke in intake

Wed Jun 6 19:58:17 EDT 2018

Here is another...
https://trs.jpl.nasa.gov/bitstream/handle/2014/44724/10-2386_A1b.pdf?sequence=1

Mark Weiler
Fab Equipment & Facilities Manager
Carnegie Mellon Nanofabrication Facility
Electrical and Computer Engineering | Carnegie Mellon University
5000 Forbes Ave., Pittsburgh, PA 15213-3890<x-apple-data-detectors://3/1>
T: 412.268.2471<tel:412.268.5430>
F: 412.268.3497<tel:412.268.3497>
www.ece.cmu.edu<http://www.ece.cmu.edu/>
nanofab.ece.cmu.edu<http://nanofab.ece.cmu.edu/>

On Jun 6, 2018, at 7:53 PM, Mark Weiler <mweiler at andrew.cmu.edu<mailto:mweiler at andrew.cmu.edu>> wrote:

Hi Leslie,

As I mentioned in my earlier email, the impact may not be as severe as your nose thinks it is.  Your pre-filters may possibly be in dire straights, but the CR envelope may be okay.  Please click the following link and read the paper.

http://adsabs.harvard.edu/abs/2010SPIE.7794E..08C

Expedite the acquisition of a particle monitor.  PMS in Colorado may be able to help.

Best regards and good luck,

Mark

Mark Weiler
Fab Equipment & Facilities Manager
Carnegie Mellon Nanofabrication Facility
Electrical and Computer Engineering | Carnegie Mellon University
5000 Forbes Ave., Pittsburgh, PA 15213-3890<x-apple-data-detectors://3/1>
T: 412.268.2471<tel:412.268.5430>
F: 412.268.3497<tel:412.268.3497>
www.ece.cmu.edu<http://www.ece.cmu.edu/>
nanofab.ece.cmu.edu<http://nanofab.ece.cmu.edu/>

On Jun 6, 2018, at 7:44 PM, Paul, Jack <Jack.Paul at hdrinc.com<mailto:Jack.Paul at hdrinc.com>> wrote:

Hello Leslie,
I’m very sorry to hear of your misfortune.
First and foremost we would recommend replacing the filters on your air handler – you may have already done that, and a thorough cleaning of the air handler including the coils and even down to the fan blades.

Internal to the lab – downstream of the air handler, suggest you some of your HEPA filters in the cleanroom.  In my limited experience with smoke contamination, those filters will need to be replaced, but if you can inspect a few for damage (discoloration of the media), and also test a sample of the media.  At that point you will have a better idea of the level of contamination between the air handler and the final filters – and that may drive you to inspect and/or clean that ductwork.  Without knowing the material that burned, you are faced with the insidious nature of smoke that “sticks” to everyplace it is exposed.

Lastly, within the cleanroom proper you may want to do a thorough cleaning including HEPA vacuum then wipe down of all walls, ceilings, floor and tool surfaces with an IPA/water solution (sometimes called a “super clean”).

The labnework community is full of folks with great experience and I’m sure you’ll get additional suggestions.
Regards,
Jack

Jack Paul, RA, LEED AP BD+C
D 602.474.3940  M 602.369.2086
hdrinc.com/follow-us<http://hdrinc.com/follow-us>

From: labnetwork-bounces at mtl.mit.edu<mailto:labnetwork-bounces at mtl.mit.edu> [mailto:labnetwork-bounces at mtl.mit.edu] On Behalf Of Leslie George
Sent: Wednesday, June 6, 2018 12:55 AM
To: labnetwork at mtl.mit.edu<mailto:labnetwork at mtl.mit.edu>
Subject: [labnetwork] Cleanroom recovery after smoke in intake

Dear colleagues,

A fire broke out on Monday at one of the retail locations on our campus. The smoke from the fire got into the air intake for our cleanroom, and we can smell smoke throughout the Facility. I’d like to draw on the collective wisdom of the group to help answer the following:

1.      Recommend recovery method for the air handling system? (both upstream of the AHU) and downstream including the HEPA’s.

2.      Recommended cleaning scheme for the interior of the facility?

I appreciate everyone’s assistance.

Kind regards,

Leslie George, BSc, MSc
Micro & Nano Fabrication Instructor,
Research Laboratories
Khalifa University – Masdar City Campus
Opposite Presidential Flight Airport
Masdar City, SAF 1A (Undercroft)
Khalifa City A,
United Arab Emirates
P O Box 127788, Abu Dhabi, UAE
T +971 2 810 9227
Fax +971 2 810 9901
M +971 50 84 9720
leslie.george at ku.ac.ae<mailto:leslie.george at ku.ac.ae>
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ku.ac.ae
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