Boiler makeup water guidelines
Boiler makeup water guidelines
(OP)
Hello,
I am trying to find some guidelines about the required analysis of the makeup water to boilers.
I know ASME or ABMA ones but they refer to the boiler feedwater or the boiler water, but not to the makeup water. Additionally I use EPRI TR-113692, but it doesn't make any difference for the makeup water depending on the boiler pressure, and in my case, it is a small boiler working at 650 psig, so I feel it can be too strict..
Thank you for the help.
I am trying to find some guidelines about the required analysis of the makeup water to boilers.
I know ASME or ABMA ones but they refer to the boiler feedwater or the boiler water, but not to the makeup water. Additionally I use EPRI TR-113692, but it doesn't make any difference for the makeup water depending on the boiler pressure, and in my case, it is a small boiler working at 650 psig, so I feel it can be too strict..
Thank you for the help.





RE: Boiler makeup water guidelines
As a minimum, you need zero soft water, something that is obtainable with a good quality water softening unit.
The 600 psi rating is close to the breakpoint between using a deimineralizer or water softener.
The link below provides some information as to the ASME guidelines:
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As you can see, if your silica, alkalinity, or dissolved solids are high in your raw water, then you need to reduce these parameters. Otherwise, you will have to utilize high rates of boiler blowdown to keep these parameters in balance.
RE: Boiler makeup water guidelines
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RE: Boiler makeup water guidelines
Therefore my question is about how to define the quality of the make up water since the codes and standards always refer to the boiler feedwater quality. I guess that depending on the condensate quality, the make up water quality could vary, in order to achieve the required quality of boiler feedwater.
Thank you.
RE: Boiler makeup water guidelines
The quality of the treated makeup water will vary somewhat based on the raw water quality and the water treatment scheme.
However, you are basically trying to produce ultrapure water with the makeup water treatment system.
RE: Boiler makeup water guidelines
RE: Boiler makeup water guidelines
http://www.eswp.com/water/paper_archives.htm