Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

This is an AMP page - Open full page! for all features.

Boiler Feed Water - Chemistry and Impurity Limits

Sponsored Links

The maximum recommended

  • Total Dissolved Solids (TDS)
  • total alkalinity
  • total dissolved solids

 according to ABMA - American Boiler Manufacturers Association:

Boiler Feed Water - Chemistry Limits
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

Maximum Allowable Impurities in Boiler Water

Boiler Feed Water - Maximum Allowable Impurities
ChemicalSymbolMaximum Concentration
(ppm)
Sodium sulphite NA2SO3 1.0
Sodium chloride NaCl 10.0
Sodium phosphate NA3PO4 25.0
Sodium sulphate NA2SO4 25.0
Silica oxide SiO2 0.20
Sponsored Links

Related Topics

Steam and Condensate

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

Related Documents

ASME - International Boiler and Pressure Vessel Code

The International Boiler and Pressure Vessel Code safety rules governing design, fabrication, and inspection of boilers and pressure vessels, and nuclear power plant components during construction.

Boiler - Efficiency

Combustion gross and net calorific value.

Boiler Blowdown

Suspended solids in the feed water will remain in the boiler when steam is generated.

Boiler Blowdown Rate

Calculate boiler blowdown rate.

Boiler Capacities

Steam boilers output can be expressed in Boiler Horsepower, MBTU or in Pounds of Steam delivered per hour.

Boiler Water - Total Dissolved Solids (TDS)

Impurities from the feedwater will concentrate in the boiling water.

Cavitation

Cavitation occurs in fluid flow systems where the local static pressures are below the fluids vapor pressure.

Feed Pumps in Steam Systems - Suction Lift Head vs. Temperature

Cavitation of impellers increases with water temperatures.

Feed Water Treatment to Avoid Corrosion

Make-up water to steam boilers should be treated with oxygen scavengers to avoid serious corrosion problems.

Steam Boiler Rating vs. Feed Water Temperature

Boiler output vs. feed water temperature.

Water Supply Systems - Impurity Limits

Typiclal limits for impurities in drinking water.

Water Systems - Maximum Flow Velocities

Water velocities in pipes and tubes should not exceed certain limits.

Sponsored Links

Search Engineering ToolBox

  • the most efficient way to navigate the Engineering ToolBox!

SketchUp Extension - Online 3D modeling!

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro . Add the Engineering ToolBox extension to your SketchUp from the Sketchup Extension Warehouse!

Privacy

We don't collect information from our users. Only emails and answers are saved in our archive. Cookies are only used in the browser to improve user experience.

Some of our calculators and applications let you save application data to your local computer. These applications will - due to browser restrictions - send data between your browser and our server. We don't save this data.

Google use cookies for serving our ads and handling visitor statistics. Please read Google Privacy & Terms for more information about how you can control adserving and the information collected.

AddThis use cookies for handling links to social media. Please read AddThis Privacy for more information.