The regular tests that are carried out on boiler water are:
- TDS or total dissolved salts , it is to find the density of the water with the dissolved salts in
- Hardness test—it tells us to what extent the phosphates have converted the hardness salts to equivalent salts of The hardness should be below 5ppm.
- Alkalinitytests consisting of caustic alkalinity and total Alkalinity is a desired quality in boiler water but must be within moderate limits and hence the monitoring to check it is within limits.
- Chloride test— this test is carried out to find out if sea water is leaking into the boiler .
- Phosphate reserve test— phosphates have to be in reserve in the boiler water as the extra feed is continuously entering the boilr and has to be The quantity of phosphates used should be moderate and hence the need for the test.
- For boilers working on a closed feed system sulphite reserve test is carried Sodium sulphite is used for treating oxygen entering the system by being dissolved in the feed.
The conductivity test is the TDS carried out using an electrical probe which is dipped in the sample jar as soon as it is taken out from the boiler, the instrument is calibrated in density converted to PPM and the reading is directly read as density in PPM.
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