winter operations ’07-’08. salt storage capacity storage capacity 8 districts, 102 locations 8...
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WINTER WINTER OPERATIONOPERATION
SS’07-’08’07-’08
SALTSALT
STORAGE CAPACITYSTORAGE CAPACITY 8 Districts, 102 locations8 Districts, 102 locations Statewide – 92,170 tonsStatewide – 92,170 tons Average shed capacity 811 Average shed capacity 811
tons tons Median shed capacity 400 tonsMedian shed capacity 400 tons
Salt StorageSalt Storage Heavy Timber ConstructionHeavy Timber Construction
400 Ton typical capacity 400 Ton typical capacity
Salt StorageSalt Storage 3,450 ton capacity with wings for brine maker and 3,450 ton capacity with wings for brine maker and
loader storage at Strang in S.E. Nebraska. loader storage at Strang in S.E. Nebraska. Several other locations have comparable buildings.Several other locations have comparable buildings.
Salt StorageSalt Storage Concrete/Wood DomeConcrete/Wood Dome
13,200 ton capacity – Omaha, Gothenburg13,200 ton capacity – Omaha, Gothenburg
Salt UsageSalt Usage50,000 tons were used to fight December Storms. Some locations ran out of salt. Managers were getting nervous!
Weekly Deliveries and Inventory Level
-
2,000
4,000
6,000
8,000
10,000
12,000
14,000
11/2/
07
11/16
/07
11/21
/07
11/30
/07
12/7/
07
12/14
/07
12/21
/07
12/28
/07
1/4/
08
1/11
/08
1/18
/08
1/25
/08
2/1/
08
2/8/
08
2/15
/08
Date
To
ns
Del
iver
ed
-10,00020,00030,00040,00050,00060,00070,00080,00090,000100,000
To
n o
n H
and
Tons Delivered
Tons on-hand
Salt UsageSalt Usage
Total ’07-’08 Contract purchases 115,364 Total ’07-’08 Contract purchases 115,364 tonstons Delivered by truck from KansasDelivered by truck from Kansas
Additional 1,500 tons by rail from Utah and Additional 1,500 tons by rail from Utah and Kansas.Kansas.
825 tons Ice Slicer was ordered to make up 825 tons Ice Slicer was ordered to make up for salt shortage.for salt shortage.
A new contract specification is being A new contract specification is being developed to address delivery issues.developed to address delivery issues.
Some fabric covered structures planned for Some fabric covered structures planned for this year to increase storage capacity.this year to increase storage capacity.
Salt UsageSalt Usage Occasionally, agricultural products are added!Occasionally, agricultural products are added!
LiquidsLiquids BrineBrine
53 Brine makers Statewide53 Brine makers Statewide ??Guesstimated?? Production: 5 million gal.??Guesstimated?? Production: 5 million gal. ??Guesstimated?? StorageCapacity: 4 ??Guesstimated?? StorageCapacity: 4
million gal.million gal.
LiquidsLiquids
Ice BanIce Ban CaliberCaliber GeomeltGeomelt
Some problems reportedSome problems reported Usage and practices not consistentUsage and practices not consistent
FASTFAST Added Vaisala Friction sensor to control existing Added Vaisala Friction sensor to control existing
manually controlled Spray System on I-80 near manually controlled Spray System on I-80 near Kearney.Kearney.
Surface temperature and wind speed sensor inputs are Surface temperature and wind speed sensor inputs are included in the algorithm.included in the algorithm.
Live video of the bridge provides Live video of the bridge provides additional verification of additional verification of conditions and operation.conditions and operation.
Screen shot of Screen shot of Spray HistorySpray History
Relationship between Relationship between ice or snow thickness ice or snow thickness
and grip.and grip.
0:1
2
0:3
8
1:0
9
1:2
8
2:0
4
2:2
8
2:5
8
3:2
80
0.1
0.2
0.3
0.4
0.5
0.6
0.7
Kearney Bridge 12/28/07
ICE
SNOW
GRIP
FAST 2008FAST 2008
Three additional FAST systems are Three additional FAST systems are planned for I-80 bridges:planned for I-80 bridges: SheltonShelton AuroraAurora GiltnerGiltner
Accident history is used to decide Accident history is used to decide where FAST is justified.where FAST is justified.
In 2007, NDOR joined In 2007, NDOR joined the the
Pooled Fund MDSSPooled Fund MDSS
Three Districts Three Districts participated in the participated in the first season.first season.
34 routes in the 34 routes in the systemsystem
120 Users trained120 Users trained Half-day intro in Half-day intro in
NovemberNovember Two-hour hands-Two-hour hands-
on sessions in on sessions in JanuaryJanuary
Good receptivity Good receptivity to MDSS by usersto MDSS by users
Eight Iwapi AVL Eight Iwapi AVL units in place.units in place.
Plan to add more Plan to add more districts, routes, districts, routes, users, and AVL users, and AVL units for next units for next seasonseason
MDSS Highlights
MDSS Regional MDSS Regional Product ShowcaseProduct Showcase Omaha, NEOmaha, NE May 28, 2008May 28, 2008 No registration fee!No registration fee! DemonstrationsDemonstrations
Meridian PFS and Colorado DOTMeridian PFS and Colorado DOT NCAR and City of DenverNCAR and City of Denver DTN/Meteorlogix and Illinois DOTDTN/Meteorlogix and Illinois DOT IWAPIIWAPI Intelligent Devices, Inc.Intelligent Devices, Inc.
For more information or to register:For more information or to register:
Thank Thank You!You!