boiler water gauge glass failure analysis
boiler water gauge glass failure analysis
(OP)
i also posted this in the boiler section but i just wanted to get the materials experts point of view:
i have a 200psi locomotive boiler with water level gauge glasses breaking every 2-3weeks. i am new to the section (3months) and apparently this problem is a new phenomenon which just started about 6-8mnths back. the problem started when there was a new supplier of these glasses. we have reverted back to the old supplier but we have had 5glass failures in the past 2months. my question is, does water quality affect gauge glass service life?? because from the water analysis, most of the water quality specs. are out of range from the required specs. the following is a summary of water quality i got from the lab over a period of 2weeks, the recommended specs are shown in brackets:
P.H range=12.4 (<10.5); Total dissolved solids = 1460-2280ppm (2000-3500); M.alkalinity = 1460-2550ppm (250-850); P.alkalinity = 730-1490ppm (250-650); C.alkalinity = 325-1035ppm (100-300); total hardness = 0 (0-25); chloride = 2100-3400ppm (0-800); sulphites = 70-80ppm (30-90)
i have a 200psi locomotive boiler with water level gauge glasses breaking every 2-3weeks. i am new to the section (3months) and apparently this problem is a new phenomenon which just started about 6-8mnths back. the problem started when there was a new supplier of these glasses. we have reverted back to the old supplier but we have had 5glass failures in the past 2months. my question is, does water quality affect gauge glass service life?? because from the water analysis, most of the water quality specs. are out of range from the required specs. the following is a summary of water quality i got from the lab over a period of 2weeks, the recommended specs are shown in brackets:
P.H range=12.4 (<10.5); Total dissolved solids = 1460-2280ppm (2000-3500); M.alkalinity = 1460-2550ppm (250-850); P.alkalinity = 730-1490ppm (250-650); C.alkalinity = 325-1035ppm (100-300); total hardness = 0 (0-25); chloride = 2100-3400ppm (0-800); sulphites = 70-80ppm (30-90)





RE: boiler water gauge glass failure analysis
RE: boiler water gauge glass failure analysis
The glass expands less then the metal holder will, but the glass does not want to be flexed or bowed. Check clearances, fit, and seals.
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Plymouth Tube
RE: boiler water gauge glass failure analysis
RE: boiler water gauge glass failure analysis
RE: boiler water gauge glass failure analysis
RE: boiler water gauge glass failure analysis
It should take months to get much attack and the surface should look frosted.
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Plymouth Tube
RE: boiler water gauge glass failure analysis
RE: boiler water gauge glass failure analysis
Has your pH control improved?
If you were running that high that often you may need to inspect the entire system for signs of caustic cracking in steel.
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Plymouth Tube
RE: boiler water gauge glass failure analysis