>>> 'safety' problem from bob -- Fri Jan 27 07:40:14 1989 <<<

The air tanks for our SCBA systems have been checked and filled to
the proper operating pressure by Steels, Telegraph Ave, Oakland.
We have two SCBA's on by the tylan and one in the reception area
near Gold. Spare tanks are kept in the tylan gas area.

>>> 'safety' problem from richard -- Mon Mar 27 14:04:29 1989 <<<

I have noticed that rubber products, e.g., goggle bands, rubber
bands, kept in GL-4 deteriorate much more rapidly than in the
"outside world."  For example, after six months, rubber bands
attached to some pc boards have all become cracked and break
when stretched.  The normal lifetime for such rubber bands is
usually a few years!

I don't know if this environment is peculiar to GL-4 or is 
common to the entire lab air supply.  Nevertheless, I am concerned
about what the effect is on the lab users' skin and lungs.

>>> 'safety' problem from phillip -- Wed May 10 08:58:06 1989 <<<



 Whoever left the 'Hipotronics' high voltage break down apparatus
perched precariously on the chemical cart should rectify the
situation. It is in the oldlab by the main door.

>>> 'safety' problem from phillip -- Fri May 12 08:09:36 1989 <<<

The 'hipotter' test apparatus remains on the chemical cart
in teh oldlab. Will the person responsible please secure it.
2nd request.
From rnorman Thu Jun  8 14:45:20 1989
Received: by argon (5.57/1.16)
	id AA05050; Thu, 8 Jun 89 14:45:13 PDT
Date: Thu, 8 Jun 89 14:45:13 PDT
From: rnorman (Robert L. Norman Jr.)
Message-Id: <8906082145.AA05050@argon>
To: microstaff
Subject: SCBA air bottles
Cc: safty
Status: R


The Self-Contained Breathing Apparatus spare air bottles are now kept in
the storage Room, room 413, below the electrical pannels.  Also, I changed
out a low air bottle in one of the Servivair SUBA packs.  The other
SUBA pack will be sent out to repair the "alarm bell", which
is leaking air profusely. At this time we have one "ready to go" SUBA
pack in the micorlab gowning area; and when the other gets back from 
repair it will be kept in the tech-room area.

Robert


>>> 'safety' problem from tom -- Thu Jun 22 11:10:36 1989 <<<

The ovens on the eaton have an exaust port that is not hooked up.  This
is where most of the dangerous fumes come from and the exaust should be 
hooked up. When Vilma (from LLL) spins her wafers there is a definate
odor in the room of photoresist baking. These are nasty carcinogens
that lab users should not be exposed to.

>>> 'safety' problem from bob -- Fri Jun 23 10:08:54 1989 <<<

The oven on the eaton has been hooked into the house exhaust Thank you
Tom for finding this problem and reporting it.

>>> 'safety' problem from phillip -- Thu Jul 13 10:01:24 1989 <<<

Access to and from the gas room is blocked by a large pump
on a fork lift. be advised to tread carefully around same.

>>> 'safety' problem from seh -- Thu Jul 27 12:45:34 1989 <<<

I found a spray can of EK-34 photoresist remover, which is clearly
marked Flammable, sitting right next to a working hot plate in Y1.

>>> 'safety' problem from bob -- Thu Jul 27 16:47:25 1989 <<<

A bottle of HNO3 was spilled in the old lab. Marilyn was involved in
this accident. Marilyn washed well and should have no problems and the
area of the lab was cleaned with spill pillows. These have been
bagged and will be disposed of through EH&S. We are down to
4 spill pillows and more will be ordered tomorow.

>>> 'safety' problem from rnorman -- Mon Aug 14 09:55:19 1989 <<<

Problem: SCBA Survivair discharge alarm bell was leaking when
         the bottle valve was opened.

Cause: The Poppet was leaking.

Solution: The low air alarm assembly was rebuilt with overhaul
          kit #960690; the low and high pressure sides were rebuilt.
          The SCBA was tested and works well.

>>> 'safety' problem from bob -- Mon Aug 21 08:50:02 1989 <<<

The spare SCBA tanks were refilled with air and are at 100%
pressure. They are stored in room 413 and are ready for use
when needed.
Bob

>>> 'safety' problem from bob -- Wed Sep 13 09:25:16 1989 <<<

Christine Saunders is installing power failure lights in areas
of the lab to assist in evacuation in the event of a power failure.
These lights are marked with their location and a reciprical label
is being put on the AC socket they belong in. Please do not use
these lights a flashlights.

>>> 'safety' problem from dcarl -- Wed Sep 13 09:25:16 1989 <<<

>From dcarl Mon Sep 11 17:21:52 1989
Received: by argon (5.57/1.16)
	id AA27260; Mon, 11 Sep 89 17:21:50 PDT
Date: Mon, 11 Sep 89 17:21:50 PDT
From: dcarl (Daniel Carl)
Message-Id: <8909120021.AA27260@argon>
To: voros
Subject: KTI 820 PR is a Mutagen!!!
Status: R


Katalin,

I learned today from a reliable source that the solvent used in KTI 820 
photoresist is very mutagenic (especially to males) and teh effects do no
wear off with time?  Isn't this the resist we use in the Eaton?  If so, isn't
this dangerous?  

The source was Dr. Jim Papanu (former Hess student, currently working at
Signetics in Lithography Development).

Thanks.

Dan Carl


------- End of Forwarded Message

Return-Path: bob
Received: by argon (5.57/1.16)
	id AA20771; Wed, 13 Sep 89 09:03:39 PDT
From: bob (Robert M. Hamilton)
Message-Id: <8909131603.AA20771@argon>
To: dcarl
Cc: sup
Subject: Photoresist
Date: Wed, 13 Sep 89 09:03:37 PDT


Dan, it is the posing of questions such as yours that 
prompt a closer look into safety procedures. 

I am aware that photoresist has solvents and anti striating
agents that pose a health hazard and are listed as causing
birth defects and possible reproductive changes in animals.
Specifically the Cellosolves(tm) such as 2-Ethoxyethyl acetate.
The MSDS sheets list the personal exposure limit at 10 ppm
based on an 8 hour time weighted average. Short term
exposure limits are 25 ppm. These values were determined by
animal studies in which birth defects, delayed fetal
development, and increased fetal lethality were observed
after exposure to the above with an apparent response level
of around 400 ppm in air.

Our spin coaters are all equipped with exhaust on the spin
bowls with the face exhaust velocities exceeding 100 ft/min, 
the federal standard for fume hoods. In addition, the bake 
hot plate on the eaton and the oven in Y2 are exhausted to 
the lab fume exhaust system. 

The Microlab has an air change every 2.6 minutes or 23
changes/hour. Air is supplied at 23,000 cubic feet per
minute. 

When wafers are coated, the amount of photoresist on a 4
inch wafers is typically 8 mgs or less and only 2 mgs on 
2" wafers. Solvents and anti striation compounds are a small
fraction of this weight. Therefore we are really seeing very
minor amounts of hazardous material. This material can find
its way into the lab air at the location of the manual hot
plates next to the headway in Y1. 

Your safety questions has prompted an audit of our fume
exhaust procedures re: photoresist. I believe I can
strengthen our current procedures by the addition of exhaust
hoods over the manual hotplates. This should further reduce
any exposure solvents from photoresist to negligible levels.
I will also contact Jim Seward of Occupational Health and
Safety for his review and see if he can monitor the level of
Cellosolves(tm) before and after the addition of fume exhaust
over the hot plates.

Bob Hamilton



>>> 'safety' problem from rnorman -- Wed Oct 25 08:03:40 1989 <<<

Problem: The Hydrogen bottle next to the % is now empty
         due to someone leaving all the valve open, so it leaked
         into the room.  VERY DANGEROUS!!  BE CAREFUL!!!!!
         I also found a hole in the O2 supply line, due to melting
         from the torch.

Solution: The bottle was closed and now will need to be replaced.
          Users of this welding torch must be very careful!  
          A bottle of Hydrogen has the potential of becoming a
          very large bomb!  Please check the bottle valves when done and
          make sure they are closed.

>>> 'safety' problem from seh -- Fri Nov 17 09:07:23 1989 <<<

Someone left a bottle of acetone in sink8

>>> 'safety' problem from rnorman -- Fri Jan 12 07:32:45 1990 <<<

Open and rusted razor blades in the old lab by the sink.  This is
a potential hazard.  Suggestion: To not use the razors for scratching
bottle labels, but use a tool such as a can opener; this tool would be
hung next to the sink or bottle disposal trash can.  Also, after using 
one of the razor blades, dispose of it properly.  Good health to you!

>>> 'safety' problem from voros -- Fri Jan 12 08:21:19 1990 <<<

From: bob (Robert M. Hamilton)
To: marilyn
Cc: rnorman, sup
Subject: Scratcher
Date: Fri, 12 Jan 90 07:46:12 PST

Robert Norman has come up with a good safety suggestion and
he will add it to the bottle disposal area in the old lab.
He'll make a bottle scratcher to replace the razors and put
it on some ball chain to keep it from walking. 
Bob

>>> 'safety' problem from bob -- Thu Jan 18 09:12:20 1990 <<<

Robert Norman has come up with a good safety recommendation for the
Microlab. The following has been implemented:

Can openers have been installed in the old lab chem room
attached to ball chain. This will keep them from walking.
Razor blades will be eliminated for scratching the bottle
labels and these can openers will be used instead.

The openers are by the black sink and another by the garbage
can.

Debra will change the manual and send out word to the
lab-users regarding this change in procedure.

>>> 'safety' problem from bob -- Fri Jan 19 07:53:53 1990 <<<

Problem: Exit signs off. Batteries destroyed by being fully
         discharged. These were replaced only 3 months ago
         as they were found not working.

Cause:   Cssem operators are going into the breaker panels
         and turning off the EXIT circuit to increase viewing
         contrast.

Solution:The breaker is back on. DOFM will be called to again
         replace the batteries. cssem operators should not
         interfere with the EXIT signs. This is a violation
         of the law. Another method of increasing contrast
         should be found, perhaps the addition of a small hood.

>>> 'safety' problem from bob -- Thu Jan 25 08:34:49 1990 <<<

TO ALL LAB USERS:

Please dispose of all needles and razor blades in the jar 
provided in the old lab chem room sink. The jar is labeled
for such puposes.

Please dispose of all broken glassware in the galvanized
pale labeled "Broken Glassware".

The above procedures must be observed and are safety related.
Our custodian has sent us a message that these procedures are
not always followed. Please observe them!

>>> 'safety' problem from bob -- Tue Jan 30 07:51:19 1990 <<<

To: All Lab Users

Please dispose of all razor blades in the containers provided. Currently
there is one container in the chem room above the black sink. Additional
containers are being placed in GL-2 and V-1. These will be labeled for
razor blade disposal.

In addition, please dispose of all used hypodermic needles in these same
containers.

Broken glass should be disposed of only in the galvenized can provided
for such purpose. It is in the old lab.

The above procedures protect our custodial staff and provide for a safe
working environment. Your cooperation is appreciated.

>>> 'safety' problem from marilyn -- Tue Jan 30 08:07:23 1990 <<<

Safety problem: Oil slick in the center of the hallway directly
                in front of the double doors leading into the
                old lab.  The slick continues into the old lab
                as well. Caution: floor surface is very slippery.

>>> 'safety' problem from rnorman -- Tue Jan 30 14:56:35 1990 <<<

The oil was cleaned up and parrish placed a oil tray under the mech
pump of the hld to catch the leaking oil.  This will stop oil from
dripping onto the floor.

>>> 'safety' problem from bob -- Tue Feb 13 10:53:51 1990 <<<

Rod Warren of EH&S-Radiation Safety came by this morning and checked over 
N2 blow off guns. In addition he has removed iona as a potential ionizing
radiation source due to it being decomissioned.

All Microlab ionizing radiation sources have been checked and determined
to have zero leakage.

>>> 'safety' problem from bob -- Wed Feb 28 07:00:57 1990 <<<

The quartz pushrods on the lberg furnaces have all been fire plished
to prevent injury. Recently a student wroking in this area was cut
on the forehead by a sharp edge on one of these rods. All corner
are now "soft".
From richard Thu Mar 22 08:37:39 1990
Return-Path: <richard>
Received: by argon.berkeley.edu. (4.1/SMI-4.0)
	id AA04737; Thu, 22 Mar 90 08:37:36 PST
Date: Thu, 22 Mar 90 08:37:36 PST
From: richard (Richard Hsu)
Message-Id: <9003221637.AA04737@argon.berkeley.edu.>
To: oldham@janus.Berkeley.EDU
Subject: Re:  meeting
Cc: bob, voros
Status: RO

I checked for ozone and a few other noxious gases in GL-4 a couple
of months ago with some badge-type monitors.  These are chemically
treated papers which are designed to change to a certain color when
the ambient concentration reaches a certain level.  The monitors
are cumulative in effect, i.e., they integrate the concentration
they have been exposed to.

The bottom line is that the concentration of ozone in GL-4 is below
0.1ppm.  After twenty-four hours there was a color change on the edges
of the indicators.  If there were 0.1ppm or higher concentration of
ozone, the paper would have changed color within one hour.

Regarding skin exposure, we can try to better shield the beam.  I did
have a plexiglass plate made for the Microstepper which blocks 248
spraying off the diffuser at the illuminator.  I understand that the
effects of 248 on skin are also cumulative.  I have started wearing
a face shield when the laser is running.

As an aside regarding ozone, when George Schwartzkopf was here he
told me that copiers emit a tremendous amount of ozone!!  The smell
which I had attributed to the toner is actually O3 in high concentration.
At least we/I cannot smell the amount of ozone in the lab.




>>> 'safety' problem from bob -- Mon Apr  2 13:37:21 1990 <<<

There are two safety carriers in the front of the lab by the 
chemical storage. Neither of these will hold an accetone bottle.
The ID of the carrier is less than the bottle O.D.

>>> 'safety' fix from rnorman -- Mon Apr  9 07:34:52 1990 <<<

Problem: Broken glass on the floor of CG1, service chase next to GL1.

Cause: Who ever broke the glass container did not do a thorough job
       in cleaning it up.  The result was that someone got cut, parrish,
       on the glass while changing the pump oil on the semi.

Solution: The glass was vacuumed up and parrish attended to his knee.
 
        *Please in the future when you break glass items clean the
         surrounding area thoroughly*

>>> 'safety' fix from rnorman -- Fri Apr 27 10:00:27 1990 <<<

Problem: Water leak under by randex area.

Cause: A drain hose was out of the drain and spilling on the floor.

Solution: The hose was replaced in the drain and the water cleaned up.
