1. condenser

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1. condenser

  1. 1. 1. Surface Condenser Nuclear Plant & Heat Exchanger Engineering Section
  2. 2. P&ID around Condenser The condenser transfer the latent heat of vaporization from the turbine exhaust steam to the Circulating Water system. The condenser hotwell acts as a collection point for the condensate formed on the condenser tube bundles, and for other miscellaneous high quality condensate drains. The hotwell also serves as the suction source for the condensate extraction pumps.
  3. 3. Bird’s-eye View of Condenser (sample) Shell Skirt Expansion Joint Water box Shell Tube bundle
  4. 4. Bird’s-eye View of Condenser (sample) LP turbine
  5. 5. Sectional Assembly of Condenser exhaust steam from LP turbine circulating water
  6. 6. Sectional Assembly of Condenser air and noncondensable gas
  7. 7. Sectional Assembly of Condenser to condensate pump hotwell
  8. 8. Sectional Assembly of Condenser Expansion joint Water box Shell
  9. 9. Outline Drawing of Condenser
  10. 10. Tube and Tube Sheet Tube sheet: Stainless Steel Stainless steel tube
  11. 11. Arrangement of the Collar Bolt
  12. 12. Sectional Assembly of Condenser Tube Support sheets Air outlet(inlet side)
  13. 13. Explanation of Main Parts  Shell : SA285-C (Carbon steel)  Shell Skirt : SA285-C (Carbon steel)  Expansion Joint : SA240-304 (Stainless steel)  Water Box : SA285-C (Carbon steel) with rubber lining  Tube Sheet : SA240-316L (Stainless steel)  Tubes :SA249-TP316L (Stainless steel)  Tube Support Plate : SA285-C (Carbon steel)  Gasket (Tube sheet- W/B): Cotton insert rubber  Gasket (Tube sheet-Shell): Non-Asbestos  Gasket (Shell/ shell skirt manhole): Non-Asbestos  Gasket (W/B manhole): Cotton insert rubber
  14. 14. Technical Data  Type : Surface condenser, single shell, single pass  Cooling area : 16,410 m2  Shell Side Design press. : Full vacuum (normal vacuum -692.1 mmHg) Design temp. : 55 ℃ Test press. : Water filling at site  Tube Side (cleanliness factor 90 %) Design press. : 4.8 barg Design temp. : 50 ℃ Test press. : 7.2 barg at shop Source water : River water Inlet temp. : 30 ℃ Outlet temp. : 40 ℃
  15. 15. Tube Specification  MATERIAL : Welded stainless steel  OUTSIDE DIAMETER : 22.23 mm  TUBE THICKNESS : 0.7 mm  TUBE LENGTH : 17,627 mm (overall) 17,466 mm (active)  NUMBER OF TUBE : 13,454 per unit  WATER FLOW : 36,750 m3/h
  16. 16. Maintenance Procedure  Cautions and Warnings 1) Do not enter the main condenser water boxes until they have been ventilated and drained. 2) Do not enter the shell side of the main condenser until it has been ventilated. 3) Personnel performing condenser tube flushing and any other personnel in the vicinity should wear protective clothing and face shields to prevent injury due to high velocity water.
  17. 17. Preventive Maintenance  Monthly Inspection Visual inspection of piping, flanges and joints for leakage  Internal inspection and Cleaning 1) Preparation for inspection 2) Condenser shell internal inspection 3) Water box internal inspection 4) Cleaning condenser tubes
  18. 18. Corrective Maintenance (if necessary) 1) Preparations for maintenance 2) Repairing water box rubber lining 3) Plugging defective condenser tubes 4) Sealing tube-to-tube sheet joint leaks 5) Preparing the condenser for service
  19. 19. End...

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