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Salient Specifications |
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1. Dredge Configuration |
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The dredge can be classified into the following:- |
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(a). |
Pontoons |
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(b). |
Superstructures |
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(c). |
Digging Section |
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(d). |
Screening |
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(e). |
Scrubbing |
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(f). |
Treatment Plants, |
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the specification of which is summarized hereunder. |
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| 2. Pontoons |
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2.1 |
Maximum Length |
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94.5 M (310’-0”) |
2.2 |
Maximum Width (stern) |
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32.7 M (107’-0”) |
2.3 |
Maximum Width (bow) |
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20.5 M ( 67’-3”) |
2.4 |
Pontoon Height |
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2.95 M ( 9’-8”) |
2.5 |
Expected Draught (light) |
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1.60 M ( 5’-3”) |
2.6 |
Expected Draught (loaded) |
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1.28 M ( 4’-2”) |
2.7 |
Expected Weight (light) |
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3,200 Tonne |
2.8 |
Expected Weight (loaded) |
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4,443 tonne |
2.9 |
Net Area |
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2,490.14 M2 (26,790 ft2) |
2.10 |
Moment to change trim 1” |
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1,171 T.FT |
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| 3. Pontoons |
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3.1 |
Length of Superstructure |
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110.8 M (363.4 ft) |
3.2 |
Length of dredge with ladder up, from bottom tumbler to end of overburden chute
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130.0 M (426.4 ft) |
3.3 |
Maximum width of dredge |
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32.7 M (107.0 ft) |
3.4 |
Height of top tumbler from deck |
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14.4 M (47.2 ft) |
3.5 |
Maximum height of roof from deck |
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21.0 M ( 68.8 ft) |
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| 4. Digging Section |
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4.1 |
Length of ladder |
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51.2 M (168 ft) |
4.2 |
Bucket capacity
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14.cu.ft (0.397 m3) |
4.3 |
Number of buckets on ladder |
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50 |
4.4 |
Number of buckets in band |
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111 |
4.5 |
Number of ladder rollers on ladder |
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20 |
4.6
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Ladder is raised or lowered by a winch through a pair of 6 x 25 (12/12/9.3) Horse Power of Winch |
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175 HP |
4.7
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The traversing of the dredge
forward, sideways is efected by five wire ropes from drums of the mooring winch. Horse Power of Winch |
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30 HP |
4.8 |
Maximum digging depth |
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30 M |
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| DIGGING CAPACITY |
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| The dredge is designed to operate in the following modes :- |
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Stripping at 22 bucket per minute (bpm)
Treating at 9.4 bpm |
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Operating Hours |
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600 hrs /mth |
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Treating time |
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200 hrs /mth |
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Stripping time |
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400 hrs /mth |
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Treating Volume |
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168 m3 / hr |
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Stripping Volume |
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393 m3 / hr |
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Dredging volume per 600 hrs month |
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Treating |
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33,600 M3 |
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Stripping |
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157,200 M3 |
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Total vol per month |
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190,800 M3 |
