Thanks for the thoughtful responses. Yes, you are both correct: A-106 should be used in sulfidation service and a-53 should be easily identified as not meeting spec since it is stamped.
However, given the criticality, most folks in industry will have to resort to PMI verification (unless MTR...
Greetings fellow engineers,
Some of you may be familiar with the problem low silicon (<0.1%) carbon steel presents in sulfidation services: unpredictable (and possibly much higher) uniform corrosion rates.
Fortunately, A-106 has a minimum Silicon spec of 0.10%, which eliminates the concern...
TEMA R and AES type. This is a section VIII hxer, I believe 300# @ 650F.
In the end, I'm looking for general guidance on how to put numbers to this issue in the future. Any thermal expansion/tubesheet calcs that help
with this assessment?
I wul have to reconfirm the service with process, but...
Fellows,
I am replacing an exchanger that has a carbon steel tubesheet and 1" 304 tubes. The shell side operates at 500degF. Besides service/corrosion concerns (we have those lined out), are there mechanical issues with the tube to tubesheet joint?
I feel the difference in thermal expansion...
Greetings fellow engineers,
I am supporting a project in which we will be adding a nozzle to an existing airfin heat exchanger designed to API 661.
API 661, para 9.2.1 states "All carbon steel..headers shall be subjected to post weld heat treatment".
I would like to understand the intent of...
