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Sea Water Intake System
LOCATION
1 State Kalpakkam, Tamilnadu
2 SCOPE To draw about 29m³/sec Sea Water for Condenser Cooling at Turbine building in 500MW PFBR project at Kalpakkam, Tamilnadu.
3 COMPONENTS  
  Intake Shaft 4.25m dia
  Submarine Tunnel 3.6m dia
  Out let Shaft 6.0m dia
4 BROAD DESIGN PARAMETERS  
  Sub-marine Tunnel  
  Shape of Tunnel Horse Shoe
  Inner Dia of Tunnel 3600mm
  Outer Dia of Tunnel 4300mm to 4600mm
  Length of Tunnel  565m
  Grade of Concrete M-45, A-20 with suitable plasticizer.
  Bed Level at the Entry EL (-) 30.70m
  Bed level at the exit EL (-) 36.56m
  Bed gradient 1 in 96.4
  Type of lining CC lining 350mm thick, where the rock is good and adequate rock cover is available
  Type of strata Charnockyte
  Modulus of Elasticity of Rock 0.46 to 3.34 x 106 x T/m2
  Poisson’s ratio of Rock 0.14 to 0.25
  Class of Rock Class II
  Horizontal loads, Vertical loads moments From Intake Structure Designs
  Density of Sea Water 1.024 T / m3
  Inner Dia of Shaft 4250mm 6000mm
 

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