From gjc Tue Dec  9 15:47:47 1986
Received: by lmi-angel.ARPA (4.12/4.7)  id AA12759; Tue, 9 Dec 86 15:47:30 est
Date: Tue, 9 Dec 86 15:47:30 est
From: George Carrette <gjc>
Message-Id: <8612092047.AA12759@lmi-angel.ARPA>
To: picon


FROM:    GEORGE CARRETTE
TO:      ALL PICON GROUP MEMBERS
DATE:    DEC 9, 1985
SUBJECT: FILE SYSTEM ORGANIZATION

This memo is being sent on-line and in hardcopy form to be
sure that everybody sees it *and* *remembers*.

I am in the process of organizing the file systems.

  LAM15 now has 50K blocks free and should be considered the
  primary file server. It should have all working copies of files.

*** The only lisp machine that will be automatically backed up is LAM15.

  After all the machines are taken care of then the directories on
  LAM15 will be organized. Sources will be in one place, binaries
  another, with special library directories for PIC files.
  There will probably be different subdirectories for AI-BASE, IKE,
  and PICON.

LAM10B: Directories such as PICON-CLASS, PICON-CLASS-DISTRIBUTION,
 have been moved to LAM15. Do not write further files to LAM10B,
 its filesystem should be considered dead until further notice.

LAM10: Being looked at now. Probably will end up being a BACKUP
 of active files on LAM15. Only to be used to restore crashes of LAM15.
 Do not write files to this machine.

LAM5: This appears to be mostly copies of LAM15. Anything relevant extra
 will be copied to LAM15. After that the machine will be turned over
 to JWC. He will wipe it clean and set up a release testing machine
 that *only he* will write files to.





From bob Tue Dec  9 16:23:50 1986
Received: by lmi-angel.ARPA (4.12/4.7)  id AA12849; Tue, 9 Dec 86 16:23:39 est
Date: Tue, 9 Dec 86 16:23:39 est
From: Bob Chassell <bob>
Message-Id: <8612092123.AA12849@lmi-angel.ARPA>
To: picon
Subject: the Sun Oil alkylation plant


This is a brief description of the Sun Oil alkylation plant as Rich
Wallace described it.

Sun Oil has a gasoline alkylation plant at Marcus Hook, PA.  The
operation takes light molecules of isobutane and butylene and binds
them together to make heavier molecules of gasoline.  The light
molecules come as a by product of the Cat Cracker.  The isobutane and
butylene first have sulfur or other contaminants removed, then they
are mixed with highly concentrated sulfuric acid which is used as a
catalyst.  The gasoline that is formed sinks to the bottom and the
rest boils off and is redistilled and recycled back.  Since the
butylene has double bonds, no extra hydrogen is need for the process.
The reaction occurs at 40 - 50 degrees Fahrenheit, so sometimes
refrigeration is necessary.  The operating pressure is about 15 lbs/sq
in.

The whole system has a great deal of inertia; changes in the reaction
are slow and once a change starts, it takes a long time to correct it.
Molecules take several hours to pass through the system; they spend a
lot of time in settling tanks in which contaminants or cleaning fluids
settle out.

The operators get into trouble when they don't pay attention to the
isobutane to butylene ratio.  Corrections take a long time before they
take effect.  A change in this ratio increases the rate at which
sulfuric acid is lost during the process and is expensive.

The data from the plant is sent to a PDP.  Rich could not remember
what number it is; he thinks it is a PDP 44.  He wants RTIME
to gather data from the PDP every 10 minutes and give it to PICON.
Also, PICON needs to send messages back to the PDP which in turn will
pass the messages on to the color monitor.

Besides this, Sun Oil wants to run simulations.


From bob Tue Dec  9 19:23:40 1986
Received: by lmi-angel.ARPA (4.12/4.7)  id AA13343; Tue, 9 Dec 86 19:23:30 est
Date: Tue, 9 Dec 86 19:23:30 est
From: Bob Chassell <bob>
Message-Id: <8612100023.AA13343@lmi-angel.ARPA>
To: sw
Cc: rod, picon
In-Reply-To: Stephen Wyle's message of Tue, 9 Dec 86 18:40:49 est
Subject: Dutchmen from U. of Ala.


Yes, a standard letter would be helpful.  The copy of the
non-disclosure agreement that June sent down from Andover is similar
to the one used by MCC (the agreement arrived after the Dutchmen
left); the wording is aimed at a company that has a "principle place
of business".  When you speak to June, you might ask her to write a
letter that would sound right when signed by someone in a university
as well.

	-Bob Chassell