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Reg. 623, Reg. 624, Reg. 625
FEED WATER FOR BOILER

Scope

 

a)

This chapter lays down specifications for feed water and boiler water for low and medium pressure boilers (boilers operating up to 60 kg/cm2).
b) For boilers operating at pressures higher than 60 kg/cm2, better quality of water to IS:10496-1983 may be adopted.


Reg. 624

Requirements

The water shall comply with the requirements given in Table 1 when tested by the methods prescribed in col. 6 and 7 of the table.



Reg. 625

Sampling

Sampling shall be done following general directions given in 2 of IS:3025-1964*. In particular, the following points shall be observed :


a) It is necessary that a stainless steel or monel metal coil is fitted on the sampling cock so that the temperature of the water sample will be well below the boiling point at atmospheric pressure and there is no risk of aeration and concentration due to flashing into steam; and
b) Samples of feed water shall be collected from the delivery of the boiler feed pump, samples of boiler water from the top drum, and samples of condensate from the delivery of the condensate extraction pump.
 
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