The long awaited PTC TW is a completely new standard that ASME responded to changing industry demands for a more comprehensive set of. thermowell failures in their systems, but ASME PTC had been the standard by which most thermowells were designed. Color enhanced smoke trail . Since then, ASME PTC TW has been applied successfully worldwide in all industries whose processes are subject to high loads.

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Main Germany Company Profile Contact. This standard remained unchanged for more than 20 years.

What Has Changed with the Revision of the ASME PTC TW Standard?

As expected passing through this in-line resonance is the responsibility of the plant owner. This article is protected by copyright. How this translates into figures is shown in the table see picture gallery.

The amendments contained within it relate to the following three aspects. With this deal, a wide range of PVA polymer grades will be made available in the pharma market. The superior quality carbon dioxide will also be supplied to Coca-Cola systems.


How to Prevent Product Piracy. In there was a serious accident at the Japanese nuclear power plant in Monju. News from process industries from all over the world.

For the case, which cannot be completely eliminated, of a thermowell ptv resulting from in-line resonance, the standard demands safety provisions to prevent severe injury to personnel or damage to the plant. Subscribe to the newsletter. Scientific Image of the Day: KG Klingenberg a.

Receive 15 new engineering projects per week — get them easily delivered into your mailbox. It was caused by the rupture of a thermowell due to turbulence: Our portfolio can be seen here.

It stands as the benchmark: Such an in-line resonance was not considered in the original calculation basis from Dos Santos International; Picture: The provisions that it contained for the wake frequency calculation were 1.93 on Xsme. The vibration direction of the tube was parallel to the flow direction of the medium in the pipe. Infos can be found under www.

Select a picture to open the gallery 8 Pfc. You want to use it for your own purpose? Furthermore, the process medium must not adversely affect the fatigue strength of the thermowell material.


This edition of the standard only considered the more frequently occurring vibrations at right angles to the flow direction. As a result, passing through the in-line resonance is possible, if the process medium is gaseous and the range of the in-line resonance does not fall within the continuous operation of the plant.

What Has Changed with the 2016 Revision of the ASME PTC 19.3 TW Standard?

The revision provides some clearer and more-detailed definitions. Chemical Safety Board; Picture: I agree to the processing and usage of my amse as described in the declaration of consent.

This applies, for example, qsme companies in the oil, gas and chemical industries. Click on our picture gallery to find out!

As a consequence of the Monju incident, the ASME standard from was completely revised and the result was published in Here, the permissible flexural fatigue stress must not be exceeded during the cumulative number of vibrations of 10 11 cycles.