Comments for Review of NuMI Primary Beamline
                        System Design and Instalation
                           July 18, 2001

                   from  Dave Pushka
                       ------------------------

1. Overall Remarks

Well, I didn't see any obvious holes or gaps in what was presented.
Clearly this is a work in progress and as long as progress continues
(especially on the engineering of the stands in the NuMI stub) we should
be okay in that the stands should never be on the critical path.

However, it is troubling and should be considered a warning that the
individual who is charged with working on the engineering of the NuMI Stub
stands was not able to present his own material at the review because of
other problems in the tunnel needing his attention.  I note that this area
is also the only place where any problems were identified (the stand
occluding the door).  Hmm.

Once the engineering is completed, the cost estimates should be quite
firm, but not before.


2. Itemized suggestions, questions and concerns

(1) It is not clear what mechanism is to be used for safety reviews of
the stands and material handling equipment.  It would be nice to be able
to provide the engineering note (calculations, assembly drawings, etc) to
a safety committee for an independant review.



(2) While not really a hugh deal nor anywhere near a potential show
stopper, the installation equipment used for installing the pre-target
magnets needs to be identified, procedures written, and hazard analysis
performed.  This will likely use a custom designed cart with a cable to
pull it up hill and a built in crane to lift the magnets into position and
set tehem down on to the stands.  Use of a rack and pinion drive (cogged
railroad) would be extreamly costly.  Still, there is 6 months + of
engineering effort here.



(3) A hazard analysis and installation procedure in needed for installing
the magnets in the NuMI Stub and the extension.


(4) No obvious objections were raised about our decision to use completely
manual cranes for handling the magnets in the stub.  Good.  However, I
note the complete absence of technicians on this review committee: no
John Voirin, Dave Erickson, Dave Augustine types.  Opinions from people
with DIRECT hands on experience using cranes to install magnets would have
been most welcome.


(5) Vertical orientation of the adjusters for the angled magnets avoid
putting ANY horizontal load on to the adjusters.  Not only is this good,
it is necessary.