CONTACTS 
0201 - Dep Natrl Rscrs & Consvn           406 444 6699 fax 6721
020101 - Mr. Walt Anderson; Hydro Power Section Supervisor
020102 - Engineering Division

SUBJECTS
Speed Increaser
Housing
Gear support bolting
Shaft Misalignment, 900916
Submit Shop Drawings
for approval, review
Submittals Engineering Approval
Notice of Defects/Failure
Engineering Management
Failure to Perform, General Notice to Voith
Speed Increaser Shaft Repairs to Correct Misalignment
Shaft Repair Misalignment

1514 -    ..
1515 - Summary/Objective
1516 -
151601 - Did a little more research today and found some indication of
151602 - the original support scheme for the speed increaser in the Voith
151603 - original field installation drawings.
151604 -
151605 -
151606 -  ..
1517 -
1518 -
1519 - Voith-Renk drawings
1520 - Tudor file series 00730-11257
1521 -
152101 - These Tudor files show a series of Voith submittals.  One drawing
152102 - submitted by Voith is titled "Assembly."  It shows an outline of a
152103 - bolting arrangement which Walt today described as a cantileaver from
152104 - the structural steel member of the draft tube liner.
152105 -
152106 -     The bolts themselves, the sizing, spacing and structural
152107 -     calculations that establish they will support 32 tons in the
152108 -     operating mode of this unit, are not shown.
152109 -
152110 - Renke personnel came to the site and installed a vertical support
152111 - that ultimately applied 30 tons of support pressure on the speed
152112 - increaser.  The details we examined do not indicate the design could
152113 - easily accomodate 30 tons of vertical support.
152114 -
152115 -
152116 -
152117 -  ..
1522 -
1523 -
1524 - Misalignment of Shaft
1525 -
152501 - Walt advisded that the reason for the change in the support design is
152502 - that DNRC observed misalignment in the gear shaft at a flexible
152503 - coupling.  The supplemental structural support restored the alignment
152504 - to nearly the specified criteria, but not fully.
152505 -
152506 - This work was not supervised nor approved by the Engineer.
152507 -
152508 -     [On 911105 set agenda to meet with Engineer, Tudor, about
152509 -     completing engineering review of project design. ref SDS 3 YH8J
152510 -
152511 - Voith maintains that even though the system does not meet the
152512 - specified requirement, it is adequate.
152513 -
152514 - I asked Walt for any records he has on these events, and to prepare
152515 - something that reflects his understanding.  Where is the alignment
152516 - tolerence specified?
152517 -
152518 -
152519 -
152520 -
152521 -
152522 -
152523 -
152524 -