1. 1. Surface CondenserSurface Condenser

Nuclear Plant & Heat Exchanger Engineering Section

P&ID P&ID around Condenseraround 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.

Bird’s-eye View of Condenser (sample)Bird’s-eye View of Condenser (sample)

Tube bundle

Water box

Shell

Shell Skirt Expansion Joint

Bird’s-eye View of Condenser (sample)Bird’s-eye View of Condenser (sample)

LP turbine

Sectional Assembly of CondenserSectional Assembly of Condenserexhaust steam from LP turbine

circulating water

Sectional Assembly of CondenserSectional Assembly of Condenser

air and non-condensable gas

Sectional Assembly of CondenserSectional Assembly of Condenser

hotwellto condensate pump

Sectional Assembly of CondenserSectional Assembly of Condenser

ShellWater box

Expansion joint

Outline Drawing of CondenserOutline Drawing of Condenser

Tube and Tube SheetTube and Tube Sheet

Stainless steel tube

Tube sheet: Stainless Steel

Arrangement of the Collar BoltArrangement of the Collar Bolt

Sectional Assembly of CondenserSectional Assembly of Condenser

Air outlet(inlet side)Tube Support sheets

Explanation of Main Parts 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

Technical DataTechnical Data Type : Surface condenser, single shell, single pass Cooling area : 16,410 m2

Shell SideDesign 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 bargDesign temp. : 50 Test press. : 7℃ .2 barg at shopSource water : River waterInlet temp. : 30 ℃Outlet temp. : 40 ℃

Tube SpecificationTube 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

Maintenance ProcedureMaintenance 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.

Preventive MaintenancePreventive Maintenance

Monthly InspectionVisual inspection of piping, flanges and joints for leakage

Internal inspection and Cleaning1) Preparation for inspection2) Condenser shell internal inspection3) Water box internal inspection4) Cleaning condenser tubes

Corrective Maintenance Corrective Maintenance (if necessary)(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

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