Pressurized Vessel Directive
- Thread starter fifty60
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GeorgeB
ElectroHydraulics engineer (retired)
- Location
- Greenville SC
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- Retired
Assuming you mean the PED (Pressure Equipment Directive), in my electrohydraulic work it comes up frequently. I (an individual supporting manufacturers and suppliers) always defer to the manufacturer to determine what must be done, but you can get lots of insight from http://ec.europa.eu/enterprise/sectors/pressure-and-gas/documents/ped/
In my experience, the components must be certified by the manufacturer.
We find that, as with AHJs, unexplainable variations often occur<g>.
I am hoping to find some information on the differences between the Pressurized Equipment Directive and the various UL and CSA standards for pressurized equipment. For some IEC standards, you are able to use Listed equipment that does not have a CE mark if the testing is equal to or exceeds the PED. Anyone know anything about this?
petersonra
Senior Member
- Location
- Northern illinois
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- Semi-retired engineer
i think you will find that in general pressure vessels are covered by ASME standards.
petersonra
Senior Member
- Location
- Northern illinois
- Occupation
- Semi-retired engineer
you can buy them from ASME.
there are various stamps that are put on such vessels, and a nameplate.
your water heater is an ASME rated pressure vessel. it will have a nameplate, although the stamp(s) may not be all that easy to find as they are probably under insulation. the pressure relieve valve is also to ASME standards. You should be able to see that tag on the relief valve on your water heater.
I would like to know if the gulf between ASME stamped and the CE mark are bridged by the UL testing required for UL listing. Here is a excerpt from an article I found online:
?Will an ASME U stamped vessel automatically qualify for a CE marking? At present, no. However, additional design documentation, welding process qualification / welder certification requirements, material certification, and quality control documentation will be required in order to obtain PED certification. Efforts to improve compatibility of the ASME code and the PED are likely to continue, however, it seems unlikely that the ASME code stamp and the CE designation will be interchangeable in the near future. In the PED, a Notified Body plays a role analogous to that of the Authorized Inspector in the ASME code. Most engineering firms which offer ASME code inspections are also qualified to serve as a Notified Body and can approve the issue of a CE stamp. These firms can offer guidance in navigating the PED requirements. The ASME also publishes guides intended to explain PED requirements to manufacturers of ASME code stamped vessels?
?Will an ASME U stamped vessel automatically qualify for a CE marking? At present, no. However, additional design documentation, welding process qualification / welder certification requirements, material certification, and quality control documentation will be required in order to obtain PED certification. Efforts to improve compatibility of the ASME code and the PED are likely to continue, however, it seems unlikely that the ASME code stamp and the CE designation will be interchangeable in the near future. In the PED, a Notified Body plays a role analogous to that of the Authorized Inspector in the ASME code. Most engineering firms which offer ASME code inspections are also qualified to serve as a Notified Body and can approve the issue of a CE stamp. These firms can offer guidance in navigating the PED requirements. The ASME also publishes guides intended to explain PED requirements to manufacturers of ASME code stamped vessels?
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