Source: | River Rewa |
By: | pumping |
Pipe dimensions: | 150 mm diameter |
Number of pumps: | 1 |
No. of standby pumps: | 1(+1 spare) |
Duration of pumping (hours per day): | 8–24 h |
Reservoir capacity at site: | 237 m3 |
Number of reservoirs: | 1 |
Size of reservoir (W × L × D) | 7.2 × 13.2 × 2.5 m |
Tanks (outdoor; marked as KD-6 - KD-15:for details see Table 6.)
Species: | Tilapia |
Number of tanks: | 10 |
Volume : | 12 and 32 m3 |
Water depth in tank: | 0.8–1 m |
Water supply: | by gravity from the concrete reservoir |
Drainage: | by gravity from the concrete reservoir |
Indoor (hatching hall)
Area: | 64.8 m2 |
Species: | Carps |
Number of tanks: | 3 8 2 |
Volume: | 200 litre 500 litre 1000 litre |
Water depth in tanks: | 0.8 – 1 m |
Water supply: | by gravity from the concrete reservoir |
Drainage: | by gravity from the concrete reservoir |
Indoor (hatching house)
Area: | 200 m2 |
Species: | Freshwater prawn |
Number of tanks: | 18 3 |
Volume: | 500 litre 1000 litre |
Water depth: | 1 m |
Water supply: | by gravity from the concrete reservoir |
Drainage: | by gravity from the concrete reservoir |
Sea water supply: | from the jetty at University of South Pacific |
Tanks (outdoor; marked as KD-1 - KD-5 and KD-16 - KD-21: for details see Table 6.)
Specie | Tilapia |
Number of tanks: | 11 |
Volume: | 10 and 12 m3 |
Water depth in tank: | 0.7 – 0.8 m |
Water supply: | by gravity from the concrete reservoir |
Drainage: | by gravity from the concrete reservoir |
Tanks (in carp hatchery hall)
No separate units exist for rearing.
Tanks (in prawn hatchery house)
No separate units exist for rearing.
Table 6. Fibreglass and concrete tanks at NRS
Name | material | water volume per tank (m3) | tank volume (m3) | size (m) | depth (m) | surface m2 |
---|---|---|---|---|---|---|
Tilapia hatching / rearing (circular) tanks | ||||||
KD-1 | concrete | 9.4 | 12.6 | Æ 4.0 | 1.0 | 12.6 |
KD-2 - KD-5 (4 pcs) | fibre-glass | 14.7 | 19.6 | Æ 5.0 | 1.0 | 19.6 |
KD-6 - KD-9 (4 pcs) | fibre-glass | 24.6 | 32.0 | Æ 5.6 | 1.3 | 24.6 |
KD-10 | concrete | 9.4 | 12.6 | Æ 4.0 | 1.0 | 12.6 |
KD-11 - KD-15 (5 pcs) | fibre-glass | 24.6 | 32.0 | Æ 5.6 | 1.3 | 24.6 |
KD-16 - KD-21 (6 pcs) | fibre/glass | 16.6 | 22.1 | Æ 5.3 | 1.0 | 22.1 |
Carp spawning tank | fibre-glass | 50.2 | 60.0 | Æ 8.0 | 1.2 | 50.2 |
Holding tank | 17.8 | 23.7 | Æ 5.5 | 1.0 | 23.7 | |
Rectangular tanks | ||||||
Filtering | concrete | 37.5 | 46.9 | 6.7 × 7.0 | 1.0 | 46.9 |
Reservoir | concrete | 27.7 | 34.6 | 4.8 × 7.2 | 1.0 | 34.6 |
Holding and spawning (4 pcs) | concrete | 19,. | 23.8 | 4.75 × 5.0 | 1.0 | 95.0 |
See also 2.1 above
Area: | 64.8 m2 (7.2m × 9.0m) | |||
Water supply: | Indoor overhead tank (fibre-glass) | |||
1.7 m3 (0.9m × 2.35m × 0.8m) | ||||
Equipment-plastic tanks | ||||
3 pcs | 200 litre | diam= | 0.65m | |
8 | 500 | 1.0 | ||
2 | 1000 | 1.3 |
Area: | 39.0 m2 (5.4m × 7.2m) |
Office 100m2
Workshop 80 m2
Feed mill 100 m2
Equipment: mixers, grinders, extruder, crumbler, siever and drier with estimated capacity of 70 – 100 kg of dry pelleted feed per day.
Tea room / Equipment Store / Feed Store 200 m2
The number of ponds is 40 covering 45.6 ha pond surface.
As Table 7 shows, the ponds vary in size, and ponds having the same function may have considerable difference in size.
Name | area | width | length | depth | water depth | outlet |
---|---|---|---|---|---|---|
(m2) | (m) | (m) | (m) | (m) | ||
Spawning ponds (SP) | ||||||
SP-1 | 4,490 | 1.7–2.0 | 1.5 | sluice Æ300 mm | ||
SP-2 | 3,680 | 1.2–1.5 | 1.0 | sluice Æ300 mm | ||
SP-3 | 1,960 | 1.7–2.0 | 1.5 | sluice Æ300 mm | ||
SP-4 | 1,720 | 1.7–2.0 | 1.5 | sluice Æ300 mm | ||
SP-5 | 1,830 | 1.7–2.0 | 1.5 | sluice Æ300 mm | ||
SP-6 | 3,250 | 1.2–1.5 | 1.0 | sluice Æ300 mm | ||
SP-7 | 3,250 | 1.2–1.5 | 1.0 | sluice Æ300 mm | ||
SP-8 | 1,550 | 1.2–1.5 | 1.0 | sluice Æ300 mm | ||
SP-9 | 1,800 | 1.2–1.5 | 1.0 | sluice Æ300 mm | ||
SP-10 | 1,800 | 1.2–1.5 | 1.0 | sluice Æ300 mm | ||
Total: 27,160 (Average:2,160) | ||||||
Nursery ponds (NP) | ||||||
NP-1 | 520 | 1.2–1.5 | 1.0 | sluice Æ300 mm | ||
NP-2 | 480 | 1.2–1.5 | 1.0 | sluice Æ300 mm | ||
NP-3 | 580 | 1.2–1.5 | 1.0 | sluice Æ300 mm | ||
NP-4 | 351 | 13 | 27 | 1.2–1.5 | 1.0 | sluice Æ300 mm |
NP-5 | 336 | 12 | 28 | 1.2–1.5 | 1.0 | sluice Æ300 mm |
NP-6 | 364 | 13 | 28 | 1.2–1.5 | 1.0 | sluice Æ300 mm |
NP-7 | 338 | 13 | 26 | 1.2–1.5 | 1.0 | sluice Æ300 mm |
NP-8 | 338 | 13 | 26 | 1.2–1.5 | 1.0 | sluice Æ300 mm |
NP-9 | 406 | 14 | 29 | 1.2–1.5 | 1.0 | PVC Æ100 mm |
NP-10 | 420 | 14 | 30 | 1.2–1.5 | 1.0 | PVC Æ100 mm |
NP-11 | 392 | 14 | 28 | 1.2–1.5 | 1.0 | PVC Æ100 mm |
NP-12 | 336 | 12 | 28 | 1.2–1.5 | 1.0 | PVC Æ100 mm |
NP-13 | 420 | 15 | 28 | 1.2–1.5 | 1.0 | PVC Æ100 mm |
Total: 5,181 (Average:398) | ||||||
RP-1 | 1,156 | 34 | 34 | 1.2–1.5 | 1.0 | sluice Æ300 mm |
RP-2 | 1,100 | 1.2–1.5 | 1.0 | sluice Æ300 mm | ||
RP-3 | 600 | 1.2–1.5 | 1.0 | sluice Æ300 mm | ||
RP-4 | 530 | 1.2–1.5 | 1.0 | sluice Æ300 mm | ||
RP-5 | 850 | 1.2–1.5 | 1.0 | sluice Æ300 mm | ||
RP-6 | 960 | 1.2–1.5 | 1.0 | sluice Æ300 mm | ||
RP-7 | 600 | 1.2–1.5 | 1.0 | sluice Æ300 mm | ||
RP-8 | 710 | 1.2–1.5 | 1.0 | sluice Æ300 mm | ||
RP-9 | 800 | 1.2–1.5 | 1.0 | sluice Æ300 mm | ||
RP-10 | 820 | 1.2–1.5 | 1.0 | sluice Æ300 mm | ||
RP-11 | 1,190 | 1.2–1.5 | 1.0 | sluice Æ300 mm | ||
Total: 9,316 (Average: 847) | ||||||
Name | area (m2) | width (m) | length (m) | depth (m) | op. w. d. (m) | outlet |
Tilapia genetic ponds (TG) | ||||||
TG-1 | 651 | 21 | 31 | 1.2–1.5 | 1.0 | PVC Æ150 mm |
TG-2 | 651 | 21 | 31 | 1.2–1.5 | 1.0 | PVC Æ150 mm |
TG-3 | 672 | 21 | 32 | 1.2–1.5 | 1.0 | PVC Æ150 mm |
TG-4 | 620 | 20 | 31 | 1.2–1.5 | 1.0 | PVC Æ150 mm |
Total: 2,594 (Average:649) | ||||||
Feed trial ponds (FT) | ||||||
FT-1 | 646 | 19 | 34 | 1.2–1.5 | 1.0 | sluice Æ300 mm |
FT-2 | 726 | 22 | 33 | 1.2–1.5 | 1.0 | sluice Æ300 mm |
Total: 1,372 (Average:686) |