Comparing of pipe thikness in ASME B31.3 and 31.1
Comparing of pipe thikness in ASME B31.3 and 31.1
(OP)
Hello,
In our piping spec for refinery is written
"As a minimum requirement, piping shall be designed in accordance with ASME B31.3, Process Piping. Steam, boiler feed-water and blow down piping, associated with steam generating equipment shall be designed in accordance with ASME B31.1"
I cheked the thickness calculation for above services (steam, blow down, ...) but they also calculated as per ASME B31.3.
My question is this:
1- Is it required the thickness for steam lines in refinery to be calculated as per ASME B31.3 or not?
2- What is the difference between thickness as per B31.1 and 31.3? which code has more safety factor? which thickness is bigger and why?
Thanks and Regards,
In our piping spec for refinery is written
"As a minimum requirement, piping shall be designed in accordance with ASME B31.3, Process Piping. Steam, boiler feed-water and blow down piping, associated with steam generating equipment shall be designed in accordance with ASME B31.1"
I cheked the thickness calculation for above services (steam, blow down, ...) but they also calculated as per ASME B31.3.
My question is this:
1- Is it required the thickness for steam lines in refinery to be calculated as per ASME B31.3 or not?
2- What is the difference between thickness as per B31.1 and 31.3? which code has more safety factor? which thickness is bigger and why?
Thanks and Regards,





RE: Comparing of pipe thikness in ASME B31.3 and 31.1
You will get a more lively discussion
-MJC
RE: Comparing of pipe thikness in ASME B31.3 and 31.1
The pipe used for Steam, boiler feed-water services normaly has a corrosion allowance of 0.125 while there are other services where is 0.0625.
These a pair of reasons of the diference
RE: Comparing of pipe thikness in ASME B31.3 and 31.1