I need to get best tips for pressure vessel design on the following points which how to do and which criteria is significant.

Ø Design & Detailed Engineering of Pressure Vessels, Columns, Column Internals, Storage Tanks & Heat Exchangers based on various Design Codes & Standards.

Ø Preparing Material Requisitions & Technical Bid Evaluation.

Ø Preparation of Mechanical Datasheet.

Ø Vendor Document Review.

G Niemann in his book Machine Elements writes :

When you design ,first try to see what is alrerady done and try to understand why it is done in a particular way . Then you can proceed .

Hope this helps