Purbichauki Rural Municipality of Doti District

29^o16’41” N and 29^o17’30” N

81^o03’25” E and 81 ^o05’30” E

Catchment area

:

51.35 km²

Maximum design flood (Q₁₀₀)

:

199 m³/s

Probable maximum flood (Q₁₀₀₀)

:

370  m³/s

Mean monthly flow

:

2.02 m³/s

Type of weir

:

Free gravity flow weir

Length of weir

:

13 m

Weir height

:

2 m

Weir crest elevation

:

1021 masl

Highest Flood level

:

1034.980 masl

Undersluice Size(2 Nos)

:

2.50m x 2 m

Undersluice crest elevation

:

1028.60 masl

Intake type

:

Side intake, orifice type

Dimension

:

3.6m x 0.9m (W x H)

Orifice invert level

:

1030.10 masl

Type

:

Surface

Length of approach canal

:

8m

Size of Canal

:

2m x 1.10m

Total length of settling basin

:

50 m

Particle size to be settled

:

0.2 mm

Size of uniform section

:

36 m x 5m

No. of bays

:

1

Shape

:

Circular pipe (Dia = 1.1-0.975 m)

Length

:

1550 m

Type

:

Circular MS pipe

Internal diameter

:

0.975-0.6m

Length

:

172m

Steel type

:

Q235/IS2062 E250/Equivalent

Length

:

450m

Diameter

:

0.975-0.69 m

Thickness

:

6 mm

Type

:

Surface with 2 nos of Francis turbine

Size

:

25m x 14m x 10.2 m (L x B x H)

Turbine axis elevation

:

928.0 masl

Length

:

15 m

Shape

:

Rectangular

Dimension (B x H)

:

1.4 m x 1.0 m

Type and Nos of Units

:

Horizontal Francis / 2 Nos

Speed

:

750 rpm

Capacity

:

2 x 775 MW

Design discharge

:

2.02 m³/s

Type

:

Synchronouos, 3-phase

Specification

:

50 Hz, 0.8 power factor, 1000 kVA x 2 Nos.

Gross head

:

105 m

Net head at design discharge

:

96.06 m

Installed capacity

:

1550 kW

Efficiency

:

91%, 97% and 99% (turbine, generator and
transformer)

Dry energy

:

1.52 GWh/yr

Wet energy

:

6.95 GWh/yr

Total energy

:

8.48 GWh/yr

Existing 33 kV Location

:

Sanagaun

Length

:

280m

Voltage

:

33 kV

Road Head

:

Sajhghat

Length

:

2 km from Sajhghat( Approx.)