Requirement of Water Quality | MAKE UP WATER QUALITY | CONDENSATE PUMP DISCHARGE | C.P.U OUTLET | FEED WATER

Requirement of Water Quality

A.) Why Requirement of Water Quality:- 

1. THE CONTENTS OF DISSOLVED AND UNDISSOLVED SOLIDS AND OTHER MATERIAL SHOULD BE PRACTICALLY ZERO.
2. IN ORDER TO MAINTAIN ABOVE CONDITIONS CONTINUOUS PURIFICATION OF  THE  RETURN CONDENSATE BY MEANS OF  CPU IS MANDETORY
3. IT EMPLOY THE USE OF ALL VOLATILE TREATMENT  IN ORDER TO MAINTAIN THE LOW TDS IN WATER.
4. O.T. IS RECENT METHOD EMPLOYED FOR THE TREATMENT OF WATER/STEAM CYCLE.

 1.) MAKE UP WATER QUALITY

2.CONDENSATE PUMP DISCHARGE

3.) C.P.U OUTLET

4.) FEED WATER

B.) Why Monitoring of Water Quality:- 

MONITORING OF PARAMETERS ARE NECESSARY BECAUSE:

pH :

  –   CORROSION IS  FUNCTION OF  pH AND OXYGEN

  –    ALKALINE  CONDITION INCREASES  STABILITY OF  MAGNETITE IN ALL VOLATILE TREATMENT

  –    IN O.T.  STABILITY OF g FeOOH IS IN RANGE OF pH  7-8.5

(b) SODIUM/CHLORIDE/SULPHATE:

  –    ARE THE MAJOR CORRODANT FOR TURBINE AND PRESSURE PARTS.

 (c) DISSOLVEDOXYGEN:

         –    TO ENSURE THE FUNCTIONING OF  DEAREATOR

         –     TO CONTROL THE AMOUNT OFHYDRAZINE  IN FEED WATER.

(d) IRON: 

        –     THE CORROSION PRODUCT IN WATER/STEAM CYCLE

        –     INDICATES THE CORROSIVE CONDITIONS

(e) SP.CONDUCTIVITY/CATION CONDUCTIVITY:

       –      MOST IMPORTANT PARAMETER INDICATE THE LEVEL OF TREATMENT CHEMICAL AND                             INDICATION   OF IMPURITIES.