Minimum thickness of boiler plate PG-16
Minimum thickness of boiler plate PG-16
(OP)
I was wondering if there is an interpretation regarding the application of corrosion allowance to the minimum thickness requirement of PG-16 of ASME I. This paragraph requires plates be 1/4" thick minimum and I am wondering if this is before or after any corrosion allowance is applied.
Thanks,
Millar
Thanks,
Millar





RE: Minimum thickness of boiler plate PG-16
1/4"min + 1/16"c.a. = 5/16" min everywhere, heads and shell.
RE: Minimum thickness of boiler plate PG-16
Millar
RE: Minimum thickness of boiler plate PG-16
The minimum is 1/4"
You can order material to 1/4" and build boilers and/or components.
1-carefull with: The nominal reqd t (for plate)is 1/4"(.250")and if the supplier/mill send you on inspection < .250" you are not meeting the required t.
2-corr. allowance is not mandatory on sec I, so you can possible go to the limit, but we always allow for corrossion for good eng. practice. so if your vessel/boiler on calculation goes beyond 75 or 80%, we have the option to jump to the next available metal T.
ER
RE: Minimum thickness of boiler plate PG-16