About the ASME Section VIII, Division 2 Option
The ASME Section VIII, Division 2 (VIII-2) Code rules are available as a COMPRESS option. ASME Section VIII, Division 2 pressure vessel design is currently available. We are working to expand this option to include Division 2 heat exchanger design. When available, access to Division 2 heat exchanger design will also require the Heat Exchanger Option.
Many companies are reconsidering using the alternative rules of Division 2 because of the cost savings made possible by the completely revised 2007 Edition.
Benefits of Using the New Division 2 Rules (2007 Edition and Later)
A wider range of pressure vessels and heat exchangers can now benefit from the application of Division 2. Areas contributing to cost savings include:
As before, the application of Division 2 may involve additional overheads such as increased inspection and testing. In addition, under Division 1 you may specify partial penetration nozzle groove welds whereas Division 2 requires full penetration welds. The designer is also required to complete a user design specification sheet (UDS). However, in practice the above mentioned items are often included in the end-user's specification and may not involve additional expense.
The material and fabrication labor savings realized from points 1-6 above are now more likely to outweigh the additional overheads imposed by other paragraphs. Of course, your specific situation will dictate whether or not these benefits can be realized.