[Escoordminutes] ES Division Coordination minutes for June
Lew Serna
lserna at nrao.edu
Mon Jun 30 09:28:12 EDT 2008
Minutes for the ES Division Coordination Meeting held on Tuesday, June
25, 2008, at 10:30 am, in the LL CB conference room. Attending were Lew
Serna, Charley Chavez, Bob Broilo, Guy Stanzione, Gene Cole, James
Sullivan, Chuck Thompson and Jon Thunborg.
TAILGATES--Supervisors and leadmen should conduct tailgate sessions daily.
BUDGET —Site & Wye Track budget is over $40K short. The shortfall cannot
be made up however, 4,500 RR Ties have been ordered. Funds for ordering
parts to overhaul the blue and yellow bus engines are spent from the ops
budget which will likely overrun the Vehicle Maintenance Budget. Several
pieces of equipment need to be replaced due to being worn out such as
the Steam Cleaner ($3-4K), Band Saw ($6K) and Break. Charley is the
point of contact for surplus equipment and will make a request to Brent
to search on surplus to replace these items. Hydraulic cylinders for the
track mobile were replaced at a cost of $6K. Additional funds have been
added to various ES budgets to compensate for early overruns, keep a
close watch and order critical items only.
Stock Proposal- Skip Lagoyda introduced a service whereby “Fastenal” can
provide a stock of products they carry, in bins at individual VLA shops.
The idea is that an inventory of specific products used in a shop would
be maintained by the local (Albuquerque) Fastenal representative. The
respective shop would be charged on items removed from the stocked bin
only. This idea is attractive to the warehouse since this would reduce
the cost of warehousing and stocking a large inventory. Skip has
arranged a meeting between Fastenal and Supervisors/leadmen to see if
this is a service we can use. Supervisors and Leadmen do not believe it
is something they can use and have declined the offer. L Serna will
notify Skip.
VLBA -- Tiger Team visits to OV, NL are planned for FY 2008. St Croix
will take an extended mechanical maintenance visit early in FY 2009 (the
fall) to replace Subreflector, Elevation Bearing, finish painting,
install platform and change out one Azimuth wheel assembly. The visit to
North Liberty is complete. Antenna mechanics should ensure we have wheel
assemblies ready for Owens Valley and St. Croix. We will maintain spare
parts for one complete AZ wheel assembly in the warehouse and expense
this assembly if ever it is installed. PT AZ32 wheel assembly failed and
was replaced on 6/6/08. The platforms are finished at PT. The paint on
the HN subreflector is deteriorated and its surface contour will require
work to get it in final spec. The reflector will need to be prepared in
time for the SC maintenance visit. A more robust box to ship the
subreflector will be needed. Remaining TT Visits for FY 2008 is OV
8/18/08-8/25/08.
The Brewster and North Liberty foundations will require repairs in the
near future due to deterioration at an approximate cost of $15K each. MK
dish panels that were damaged were replaced. The damaged panels need to
be repaired for spares.
AZ BEARINGS – Next Bearing replacement for Antenna 28 will begin around
July 9, 2008 till mid August. Bob Broilo is the Bearing Change
Supervisor for antenna 28. An estimated three weeks in the AAB are
required before a bearing change can occur. Parts from the bearings
removed from antennas are needed for measuring and fitting of new parts
and should be stored until they are scheduled to be shipped to Rotek for
repair. Antenna 14, 16 & 18’s bearings have been shipped to Rotek for
refurbishment. Delivery of these bearings should be June of 2008. If
possible bearing replacements will occur at a rate of one per year in
order to maintain the EVLA outfitting schedule. There is one good
Azimuth bearing on hand. One spare bearing should be maintained at all
times in the event a catastrophic failure occurs however; we are
reasonably assured that the 3 refurbished bearings will arrive this
summer so we will use the spare for antenna 28 if necessary. Grease
samples show that antennas 10, 20, are also good candidates for
scheduled bearing changes. It is possible that the gearboxes will need
to be moved in on antenna 28 which would add approximately 3 days to the
overhaul.
PROJECTS:
Control building Stairways— The Control Building Stairways are being
replaced due to their rapid deterioration. The stairways will be
replaced with an improved design conforming to ADA. The western stairway
is complete. A new concrete landing will have to be poured at the base
of the eastern stairway and the steps replaced. The eastern stairway is
deemed hazardous and is currently barricaded to prevent its use. Work on
the eastern stairway will continue as the workload permits. No further
progress.
ST Croix Maintenance Visit— St. Croix Antenna has undergone extensive
repair and painting work due to its severe corrosion problems. Work
began on September 10 through December 21 completing 99 % of the
painting. Some topcoat painting remains at the base of backup structure.
In addition the AZ Wheel Assy, Subreflector and elevation bearing
replacement work will be completed. The warehouse reports that there are
enough El Bearing parts to prepare for ST Croix and to maintain a spare
(or 2ea).
This work along with finishing the painting is tentatively scheduled to
occur on October13 to October 26. Need to make sure this is enough time
to complete work.
VLA ANTENNA FOUNDATION MOVEMENT— A problem with north arm antenna
foundation movement needs to be addressed. It appears that the two
rearward station pillars have been slowly separating over the years at
BN3 and BN5 with BN5 being the worst. They have separated far enough in
about 33 years that 2 bolts (one on each reward pad) can no longer be
used to secure the antenna pads to the foundation pillars. Markers have
been set for taking measurements to try and see which pillars are
actually moving and at what rate. The plates from BN5 have been removed
for modification in the machine shop. No change was observed between
loaded and unloaded measurements. Measurements should continue
throughout the year.
VLA LIGHTING- All high mercury content light bulbs should be eliminated
from stock. A plan to replace all ballasts and bulbs to efficient
electronic ballasts is initiated. In addition to removing the high
mercury content bulbs the savings in kilowatt usage would payback the
initial cost in less than 2 years. This project was completed at a cost
of $13K and a savings of $9K/year will be realized. The warehouse is
stocked with energy efficient bulbs and ballasts.
GENERATOR REPAIRS— Minor leaks were noticed at the engine rear seals and
it is desirable to install a better fuel filtering system. A bearing on
the generator unit also should be replacement as a PM. This work would
cost around $15K and has been put on the funding wish list.
POWER MONITOR— A plan to install power monitoring equipment in the Hatch
gear will require a power outage lasting 2 days. The power monitoring
equipment is very useful in determining our power quality needs and will
keep operations informed of power status at all times. A hatch gear PM
will also be performed. This work is scheduled for 9/19/08-9/20/08 (Fri.
& Sat.). The following Friday and Saturday are being held as a backup
option.
EVLA;
Civil— Correlator Room: A preventive measure to test batteries and
lubricate the Correlator Door will be implemented by the ES Electrical
group. Cable tray layout is coordinated and is being installed. The
cleaning underneath the computer flooring will follow installation of
cabling. Half of the correlator racks have been installed. The other
half should be installed by the end of July. Several groups are involved
with the rack installation and work continues hooking up power and
signal cables. There is some question about when Back End Racks and
other miscellaneous racks will be installed. Correlator entry
restrictions will be in effect by 9/9/08.
EVLA Antennas— Feeds: All L band feed build work is complete and an L-
Band completion celebration is being planned for July. S-Band rings are
being cut in preparation for assembly. For efficiency S-band feeds will
be laminated two at a time every 8 weeks. The second S-Band Christmas
tree is built. VSWR tests will be made to several feeds later this
summer. It is desirable to install as many feeds as possible while in
the AAB. Some S-band feeds will probably need to wait until the antennas
are back in for overhauls.
In the event remaining VLA antennas are shut down after the 22^nd EVLA
antenna is complete it would be desirable to remove power and complete
some of the outfitting tasks in the field for some groups.
SAFETY REPORT :
No accidents reported in May. Reminders to employees to be sure and use
PPE equipment properly for example make sure lanyards are properly
attached to harness and anchoring points.
Oil Storage is full and James Sullivan will make arrangements take waste
oil off site.
The use of “Report Unsafe Condition” forms are encouraged as a way of
reporting conditions, acts or procedures that have the potential for
causing accidents.
ANNOUNCEMENTS:
PEP—
May-June 30-- Supervisors complete forms and conduct interviews
July 7--- All PEP’s due in HR
OTHER:
Filehost Folder For VLA Drafting—A need to simplify access to current
drawings is needed for ES Division generated drawings. A method similar
to what Electronics Division is desirable since the drawings will be
backed up continuously and are organized and the latest revisions are
readily accessible. Guy and drafting will investigate how Electronics
Div is accessing their drawings.
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