Recommended Feed Water Chemistry Limits

Steam boilers and ABMA recommended feed water chemistry limits

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The maximum recommended concentration limits of

Total Dissolved Solids (TDS)
total alkalinity
total suspended solids

according to ABMA - American Boiler Manufacturers Association - are given in the table below:

Boiler Operating Pressure (psig) (bar)	Total Dissolved Solids - TDS - (ppm)	Total Alkalinity (ppm)	Total Suspended Solids (ppm)
0 - 50 0 - 3.5	2500	500
50 - 300 3.5 - 20	3500	700	15
300 - 450 20 - 30	3000	600	10
450 - 600 30 - 40	2500	500	8
600 - 750 40 - 50	1000	200	3
750 - 900 50 - 60	750	150	2
900 - 1000 60 - 70	625	125	1

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Related Topics

Steam and Condensate Steam & condensate properties - capacities, pipe sizing, systems configuration and more

Related Documents

ASME - International Boiler and Pressure Vessel Code The International Boiler and Pressure Vessel Code establishes rules of safety governing the design, fabrication, and inspection of boilers and pressure vessels, and nuclear power plant components during construction
Boiler Blowdown Suspended solids entering boilers through feed water will remain behind when steam is generated. After a while the concentration of solids makes the operation of the boiler unsatisfactory
Total Dissolved Solids (TDS) In a boiler generating steam, impurities in the feedwater concentrates in the boiling water
Boiler Blowdown Rate Calculating boiler blowdown rate

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Engineering Standards

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