I know API 650 addresses elevated temperatures over 200F in Annex M. Does API 620 have a similar allowance for temperatures over 250F. In other words, can I justify by code(or some standard) running a 620 tank that is already in service over 250F?
Considering tank size makes sense. I would think that some percentage of the weight could be considered based on the diameter of the tank. Is there a trusted publication that gives general rules/guidelines on when to consider the floor plates based on size and thickness?
I follow your...
Based on API 650 calculations from various fabricators, It would seem that the weight of the floor plates are not considered when calculating overturning moments (API 650, sect. 5.11) and Uplift loads (API 650 sect. 5.12). This is also the case for calculations performed in TANK (a program for...
I originally posted a question (Link) in the storage tank section, but wanted to get a braoder perspective from some other mechanical diciplines to satisfy my curiosity.
Specifically, I was looking for similar cases or configurations (parallel layers in tension) that one might have encountered...
A reinforcing plate has been added to the outside periphery of the bottom cone head of an existing API 620 storage tank. See attached sketch. The client has asked me to verify that the modification shown in the sketch is good for a given operating temperature and pressure. I am trying to...
I have done some searching and have been unable to come up with an answer to the following quandaries...
API 620 and ASME Section VII, div 1 does not allow for formed heads with knuckle radius to diameter ratios (r/D) of less than 6%. What is the reasoning behind this and why was 6% chosen as...
I meant to say API 620.
I just have to give them the internal and external pressure the tanks can handle, which is not much. As far as external/vacuum pressure I have been using the 1 oz/in^2, but I was curious if there was some trusted publication that details a method for calculating higher...
I have been asked to turn almost 50 year old API 620 storage tanks in to ASME pressure vessels. I say this jokingly, but it is the essence of what I have been tasked with. That being said, I am not sure how I would go about calculating an external/vacuum pressures above the 1 oz/in^s limit...
