ASME code versus PED

Although very similar in design, construction and test, its purpose is different. While ASME born of standardization between manufacturers and is required for insurance purposes, the PED stems from a legislative need among the different countries of the European community. for example, in USA you can make a pressure vessel not required to be stamped ASME, but in Europe, the manufacture and use of equipment in excess of the temperature and pressure ranges set is not permitted (CE). I do not see why you need PED for a pressure vessel to be installed in USA, but the client is free to apply (long as you pay).

Sorry:

The Pressure Equipment Directive (97/23/EC) was adopted by the European Parliament and the European Council in May 1997. It has initially come into force on 29 November 1999. From that date until 29 May 2002 manufacturers had a choice between applying the pressure equipment directive or continuing with the application of the existing national legislation. From 30 May 2002 the pressure equipment directive is obligatory throughout the EU.
The directive provides, together with the directives related to simple pressure vessels (2009/105/EC), transportable pressure equipment (99/36/EC) and Aerosol Dispensers (75/324/EEC), for an adequate legislative framework on European level for equipment subject to a pressure hazard.

GA Whitephone, its really informative.

if the pressure vessel will be installed in EU country, why u go for ASME.? it is better to design as per PED.

even the cost will be less. I am saying that because we have LPG road tanker fleet. we have changed the design from ASME to PED and we got more capacity and light weight.

in ASME the material was SA 612 but with PED PN460 and we got more 4 ton of LPG.

I have the same case like you. Because some vendors in Asia are not so familar with European pressure vessel codes and materials of US standard is easy to get, a pressure vessel design/fabrication per ASME Code and meanwhile bearing CE mark. PED is legal requirement for pressure equipment installed in Europe.