Maxium Desgin temperature, API 620
Maxium Desgin temperature, API 620
(OP)
Hello,
Just wanted to ask for your advice guys on the maximum design temperature of stainless steel tanks in API 620.
Its says the following,
"Its up to the purchaser to specify the maximum temperature, not to exceed the 120 deg C."
Now in my case I need a storage tank that is at 500 Deg C.
Am I covered by the API 620 standard for storage of low pressure storage of high temperature liquids?
Pato
Just wanted to ask for your advice guys on the maximum design temperature of stainless steel tanks in API 620.
Its says the following,
"Its up to the purchaser to specify the maximum temperature, not to exceed the 120 deg C."
Now in my case I need a storage tank that is at 500 Deg C.
Am I covered by the API 620 standard for storage of low pressure storage of high temperature liquids?
Pato





RE: Maxium Desgin temperature, API 620
RE: Maxium Desgin temperature, API 620
I'm really lost and I cant seem to find it.
RE: Maxium Desgin temperature, API 620
RE: Maxium Desgin temperature, API 620
hum this seems should wrong to me because the pressure requirements are no where that high to warrant a tank to be fabricated like a pressure vessel as my tank is just above ambient(slightly to avoid air entering) and is quite large.
RE: Maxium Desgin temperature, API 620
The design methods for hydrostatic loading, etc., from API-650 or 620 would be appropriate for any tank of the shapes and pressures included in those standards.
The ASME Boiler and Pressure Vessel Code includes allowable stresses at elevated temperatures.
Neither of those give detailed design for thermal stresses, etc., which would be the major concern there.
It would be very helpful to have someone familiar with design, construction and operation of similar large "hot" equipment involved on your project. Learning from scratch could be expensive.
RE: Maxium Desgin temperature, API 620
RE: Maxium Desgin temperature, API 620
and 500-600 is my operating temperature.
thanks for your reply guys I understand there is a degree of my own engineering judgement that has to be applied here because this tank is unique. I have designed other aspects of the system under high temperature in the project and they are purely trade secrets on how they were designed and there are no codes. They are patient worthy if you know what I mean.
But the only reason I'm interested in making sure I use any and all standards regarding tanks is due to maintenance and the severity of catasopopic failure. The other devices in the system are expected to repture after so many hours of operation. Creep and rupture are the only things you really care about when it comes to high temperature induced stresses.
I guess I will have to mic and match between the api 620, asme boiler & pressure vessel codes. There are other more standard things that you must consider as we all know such as anchorage etc..
thanks for your help guys, guess I'm on my own.
RE: Maxium Desgin temperature, API 620
I recall reading about a very large tank for similar temperatures built a while back. I believe it was in Spain, but not sure. It was for molten salt for thermal storage for a solar plant, if I remember right. So similar things have been done, just not enough to get codified.