Dear Mr. Samsul P.Manik,

Your Examples is only right to show about how to make a piping system flexibel but there is no further explanation from you and your example here why is SA more conservative....
If true SA more conservative so why CAESAR II use SAL as Default here not SA (Altough that will be back to engineer judgement for better analysis).
Sl here is included in SAL equation is in purpose to prevent from thermal Ratcheting that will lead to incremental plastic deformation. For more detailed about it you can see at Goodman papers and David Burgreen Books, and many2 discussion about it on Thermal Expansion Stress Thread and Problem to have more than one sustained case Thread if you use the Search function.....
Thanks


Best Regards

Tengku Syahdilan