STEAM TURBINE MODELLING BY USING CEASAR II 1

[suren12564]

Greetings to everyone.
At present, I am evaluating Steam turbine piping loads as per NEMA S23.
The analysis is being done by using CEASAR II Software. I do not have past experience in dealing with steam turbines. I am seeking guidance from the subject experts regarding how to model the steam turbine in CEASAR II. I am attaching the Turbine drawing for reference.
Thanks in advance. The prompt response is appreciated.

 

[LittleInch]

It looks here like you're trying to do something quite hard using out of s=date requirments.

https://www.eng-tips.com/viewthread.cfm?qid=446743

I don't understand your question though. The turbine is a piece of equipment with a flanged connection assumed to be an anchor. What is your point / issue?

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[MJCronin]

LittleInch ...

It is important to understand that piping stress analysis and evaluation of nozzle loads on rotating equipment is a political game that has been played for at least the past 50 years....

I first became introduced to this game in the Nuclear Power Plant Design business in the early 1970s ...

The game is played this way:... The MBA/client purchases equipment built to no particular standard....The equipment mfr issues drawings with no allowable loads noted.... The AE hires a new engineer and insists on a nozzle analysis ... The Equipment mfr acts surprised about the topic !!! and says they will evaluate the developed loads on their equipment "for a fee" .... The client and the AE firm become enraged at the new engineer and he is fired ....

Then the game repeats itself ..... with another sacraficial newbie engineer

The AE firm somehow distribute bonuses to the principals..

Surendra, I am sorry but you are involved in a manufacturer's game that you cannot win ...

You must ask yourself, Why do your design drawings show allowable loads on the pump, but not on the turbine ??

Do the contract drawings state that the turbine and it's support will be designed to NEMA SM-23 ???

MJCronin
Sr. Process Engineer

 

[oilandgasfundas]

Hello Friends,

Created a platform for all the Piping Engineering guys, more than 45 Videos have already been covered. Look at the video links, lets make this platform more useful with your presence and utilize it as a discussion forum. Check out at :

https://bit.ly/Oilandgasfundas

01. Introductory Video (3.5 minutes)
02. Introduction to Piping (Total 40 Minutes)
03. Design Basis (Total 30 Minutes)
04. Process Interface with Piping (15 Minutes)
05. Pipe Rack (Total 25 minutes only)
06. Column Piping : (Total 1 hour 20 Minutes)
07. Pump Piping (total 55 minutes only)
08. Compressor Piping and layout (total 1 hour 20 minutes)
09. Overall Plot plan : (15 minutes only)
10. Unit Plot plan (Total 55 minutes only)
11. Valve Operation & accessibility (Total 18 Minutes)

Regards

 

[davefitz]

I was under the opinion that the steam turibne vendor would provide a stiffness matrix for each nozzle and , based on the scheduled cyclic load , an allowable force and moment reaction at the cold and hot condition. The cold load affects the ability to unbolt the casing for inspection.

"...when logic, and proportion, have fallen, sloppy dead..." Grace Slick