From latta at snf.stanford.edu  Wed May 14 09:25:23 2003
From: latta at snf.stanford.edu (Nancy Latta)
Date: Wed, 14 May 2003 09:25:23 -0700
Subject: Empty cassettes
Message-ID: <3EC26DF3.3030405@snf.stanford.edu>

Folks,

We've had a number of comments from labmembers using wbnonmetal about 
empty cassettes being 1) left out of the boxes, 2) in a box but wet and 
3) left in the dumprinser.  Here's the policy;


	Dry cassettes should be stored in clean appropriate boxes.


We realize that there may be times where drying wafers with an airgun 
instead of the dumprinser is desirable.  Also there are times when using 
an empty cassette makes the most sense.  This is fine, but please make 
sure that you return the cassettes dried back inot the boxes.  This is a 
message to the next user that the cassete is safe to use.

Thanks for your cooperation,

				Nancy
-- 
Nancy Latta
Stanford Nanofabrication Facility
CIS Room 145
420 Via Palou Mall
Stanford, CA 94305-4070
(650) 725-6727
latta at snf.stanford.edu



From rcrane at snf.stanford.edu  Fri May 23 16:06:34 2003
From: rcrane at snf.stanford.edu (Dick Crane)
Date: Fri, 23 May 2003 16:06:34 -0700
Subject: Weekend chemical use rate critical
Message-ID: <3ECEA979.BC68586F@snf.stanford.edu>

Wet bench users,

In the last few weeks, the fab has experienced a higher than normal
usage of H2O2, HCl and Sulfuric. On a few occasions the fab ran out of
H2O2 over the weekend. As we approach a three day weekend (with most
staff members out of town), please help to conserve chemicals by
observing the bath changeout schedules as listed in the logbooks. Due to
operating permit restrictions, I can not stock more chemicals outside of
the passthru. Always check for an adequate volume of replacement
chemicals prior to draining the pots. In addition, we are down to three
bottles of 20:1 BOE  this weekend. The next shipment is due in Tuesday.

Thanks for help and a good, long weekend,

Dick



From mtang at snf.stanford.edu  Tue May 27 09:57:09 2003
From: mtang at snf.stanford.edu (Mary Tang)
Date: Tue, 27 May 2003 09:57:09 -0700
Subject: Clean up!
Message-ID: <3ED398E4.A61545F4@snf.stanford.edu>

wbnonmetal-ers:

A complaint was made (see below) about the state of wbnonmetal.  Please,
please clean up after yourselves!  Please, please do not make us have to
police this station!  Please also understand that we have to follow up
these complaints with the people who appear on the equipment history --
that whoever actually uses it, it is ultimately the responsibility of
the person who enables the bench to make sure it is clean.

Yes, I'm back (and keen to get working!)

Mary

***********************
Hi Gladys:
 When I came in to use wbnonmetal early this morning, there were a lot
of
brown spots around the sulfuric hot pots because users forgot or didn't
bother to clean up acid drips. In addition, someone had left an empty 3"

cassette in the left side dump rinser. In general, I have been noticing
that at nights, some users seem to have bad processing habits and utter
disregard for lab rules. Let alone causing inconvenience to other users,

some of their actions could potentially compromise cleanliness in the
lab....
************************

--
Mary X. Tang, Ph.D.
National Nanofabrication Users' Network
Stanford Nanofabrication Facility
CIS Room 136, Mail Code 4070
Stanford, CA  94305
(650)723-9980
mtang at snf.stanford.edu