Dear Friends,

In my stress system, Equipment Vessle vendor has provided in GA dwg a " Minimum Design Metal Temp".

Design temp = 210 degree c
Ope temp = 120 degree c
Min Design metal temp = 16 degree c

Is this "Minimum Design Metal Temp" needs to consider into piping analysis?

Is this affect to calculation of the displacement / thermal growth of equipment Nozzle?

It is probably the same as the Minimum Ambient Temperature for the pipe. You need to check the Basic Design Data. It will be probably your installation temperature.

Regards,

Dear Danb thanks,

But it is not Ambient Temp of piping.I had doubt also as i referred eqp data sheet & confirmed from flex spec. that Ambient temp = 21 Degree C.

Is this related to term "Skin Temp" of Equipment?

Any Equipment design experts can give ur valuable posts.

Dear danb,during equipment modeling, i have doubt whether I am doing wrong design by ignoring << Min Design metal temp>>>.

or it may be that for Equipment model - Ambient temp as you suggest = 16 Degree C but for piping ambient temp = 21 Degree C.

But i feel, it will not possible.

have anyone encounter such problem? please advise.

If you refer to skin temperature, it should be a design margin. There are some explanations in Norsok P-100. You can find on internet for free. If you do not have a Minimum Design Metal Temp of 16 degrees for the lines connected to the exchanger, you may skip this scenario as 5 degree is not much (provided that you are not at 99.99% with the stress range)