dcasto, Thank you for replying. Your example is a good one. The key difference with regard to insulating the vessel is the time to reach 1380 R. Without insulation, it may take 15 minutes. With insulation, it may take 2 hours. From an emergency response standpoint, these are dramatically...
longesthorn, Thanks for the reply. I think you are missing the point of the question. I'm not concerned with PSV sizing because, as you've rightly stated, the PSV is not going to lift. This section of the API standard is for the situation where the vessel is likely to fail due to an external...
Propacket, Thank you for replying to the post; especially since this is your first post. I appreciate it. The circumstance to which I refer would be a high boiling liquid (such as a heavy oil). In such a case, there would be little or no vaporization to mitigate the temperature rise of the...
In reviewing API 521 (4th ed. - 1997), Section 3.15.1.1 Effect of Fire on Wetted Surface of a Vessel says that one should refer to Section 3.15.4 "if elevated temperature is likely to cause vessel rupture." The following section on Effect of Fire on the Unwetted Surface of a Vessel says one...
Moltenmetal, Thanks for the response. That makes sense. I didn't want to assume that the ASME code made sense because sometimes they do not.
Trottiey, If my situation lacks common sense, I believe you gave the perfect answer.
I have the following question for use of a pressure vessel in a code state: For a code-stamped, pressure vessel, if the intent of use of the vessel is at atmospheric pressure, is a relief device mandatory if the code-stamp is removed and documentation generated to say the vessel is considered a...
