Dear colleagues,
After years using a different Piping Stress program we are using Caesar II for Piping Stress again.
We are using version 5.10 with upgrade to 5.10 build 9.
When we try to get reports in the MSword the macro starts a infinite loop and get blocked. Something similar happens if...
Colleagues,
My stress program under B31.8 has as one of the piping material the option 5LX-70 with Yield 48263.3 N/cm2 and Ultimate 56537.02 N/cm2.
If I change the applicable coade to B31.3 (there is an internal controversy about the applicable code on this project) the only similar option is...
Dear colleagues,
I've searched for "large diameter test" and couldn't find a similar situation to the following:
60 inch Flare line
Design code B31.3. Design pressure 10 barg, Design Temperature 300 C.
Strutures are designd for empty pipe.
The Client is affraid about pneumatic testing.
The...
Please,
Could anybody describe me how is the SteamOut operation normally done in refineries?
I'm asking under a Piping Stress point of view.
It is easy to run a calculation with the steam out condition, the main problem occurs regarding to existing systems, that may be too conservative. I...
Dear colleagues,
We are evaluating a new revamping project with several cases of temperature and pressure increasing. Thinking about the impact I've thinking about some steps to confirm the possibility. Please if you have a different opinion or something to add let me know.
Regards,
Hansito
1)...
Dear Coleagues:
We have a little controversy at office reggarding to where to model the discharge load in a piping stress model.
In my opinion it should be modeled at elbows, points B and D (please see my sketches) with dir arrow as indicated. Some people say that should be points A and D...
Dear colleagues:
In my present project we are installing a set of 3 alternative compresors. They must be at one side of a pipe rack and we have some controversial opinions among the group:
Some (like me) have the opinion that the best option is locate the compresors axis perpendicular to the...
Dear coleagues,
We are planing to reduce the environmental issues related to freezing weather hydrotesting using glycol.
One idea considered was to run steam through the pipe over the night but in fact, steam consuming is also an environment issue. Other idea was trying to use the the day...
Dear Coleagues,
We have a consult from a Refinery previewing a De-cocking procedure. Their systems are design for about 480 C. The basic material is A 335 grade P5. The De-cocking operation is arround 710C operation - 745 C design.
This is far beyond the temperature tabulated in ASME B31.3...
Dear colleagues,
I have the following question:
For what cases we need to perform flange calculations ?
Note 15 Appendix A Pag 135 B31.3 2006, about allowable stress states:
"These values are established from a consideration of strength and will be satisfactory for average services. For...
Dear colleagues:
We have been asked to develop details for insulating expansion bellows for one of our clients.
The hot service expansion bellows seems to be easier to solve, you can even find providers who supplies some kind of covers for that purpose.
The more difficult solution is for the...
Dear Coleagues:
This consult is basically about a controversy regarding using B31.8 standard for NG (Natural Gas) lines upstream the meter station, that means inside de LNG plant.
We are working in a LNG (Liquefied Natural Gas) project. The applicable codes are B31.3 and B31.8.
We also have...
L&G:
We have CRYOGENIC SERVICE (-170 C) in our LNG project. The proper client Piping Class specifies Tees for branching on that service, I mean THEY ONLY USE FORGED FITTINGS for this service, not pipe to pipe branches. Even for different diameters, Reducing Tees are specified. However, some of...
