Thank you for your responses, @FacEngrPE and @JStephen . Can you please guide on the relevant section of the code dealing with such issues? I am not from the US, and haven't used the code before.
@georgeverghese If we assume that the lower end temperature is not an issue, and that the m-factor of the new o-ring material is same, can the o-ring material be changed without performing any Div-2 gasket design calculations?
Dear All,
A high pressure ASME Div 2 DEU-type exchanger has silicon o-rings in the channel head cover. We need to evaluate change of service of the exchanger from syn-gas to liquid ammonia (@ same pressure/temperature).
Silicon is not suitable for ammonia service. Can I just replace the...
As per compress software calculations, for div 1 , the relevant sections for nozzles are:
> UG-37, UG-40 : for reinforcement Area Calculation
> UG-41, UW-16, UW-15: Loading on welds
> UG-45, UG-27: Nozzle Thickness
I just want to confirm if this approach is correct. Can the original code be used this way , or is an API 579 FFS assessment necessary once the corrosion allowance (if any) of a vessel is exceeded?
An ASME VIII Div 1 vessel with 0 design corrosion allowance has thickness loss on the shell and nozzles.
>Can I calculate the minimum design thicknesses of these components using the original year 1995 design code and then use these as an additional margin compared to the actual vessel...
Hello all. I am working on modification of an existing structure made in the 1970s, designed on old Italian CNR UNI 10011/12, seismic DM-1975 codes. Does anyone have an idea of the load combinations for these codes?
Dear All,
My company (large ammonia/urea plant) is evaluating implementation of an Asset integrity management (AIM) system. We have already been using SAP for 10+ years. Is SAP good enough for AIM or are other services like Meridium , VAIL etc better? I'll be grateful if you can share...
Dear All,
An ammonia plant waste heat recovery boiler (consisting of 3 exchangers) has been in service since 30 years. The first leakage incident happened recently with a tube pinhole leakage that was plugged successfully.
Recent inspection reports show
•first exchanger: 20 Tubes with wall...
