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TAPPI TIP 0420-14

Guide for increasing the maximum allowable working pressure of cast iron, ASME constructed paper machine dryers

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Organization: TAPPI
Publication Date: 1 January 2018
Status: active
Page Count: 5
scope:

The intent of this document is to provide a guide that may be used to increase the maximum allowable working pressure of American Society of Mechanical Engineers certified cast iron paper machine dryers. This process, in which no physical change is made to the dryer, is defined as an "alteration" by the National Board Inspection Code. Machine capacity may be increased by increasing the dryer steam pressure. This benefit may be accompanied by an increase in machine speed. Any increase in machine speed will also need to be considered as dryer rotational velocity additive to the internal pressure stress. This guideline does not address determination of additional stress due to increased machine speed. This guide also provides insight on jurisdictional and insurance provider acceptance, which may be required before any pressure increase is implemented.

This guide does not address a paper machine dryer that was not originally certified to the ASME Boiler & Pressure Vessel Code. A dryer manufactured for use in a jurisdiction or country that does not recognize the ASME Code or follows an alternate set of design and manufacturing standards is not addressed in this guide. Seek guidance elsewhere for dryers that were not certified to ASME Code.

Document History

TAPPI TIP 0420-14
January 1, 2018
Guide for increasing the maximum allowable working pressure of cast iron, ASME constructed paper machine dryers
The intent of this document is to provide a guide that may be used to increase the maximum allowable working pressure of American Society of Mechanical Engineers certified cast iron paper machine...
January 1, 2010
Guide for increasing the maximum allowable working pressure of cast iron, ASME constructed paper machine dryers
The intent of this document is to provide a guide that may be used to increase the maximum allowable working pressure of American Society of Mechanical Engineers certified paper machine dryers. This...
January 1, 2005
Increasing the Steam Pressure Rating of ASME Coded Paper Machine Dryers
A description is not available for this item.
January 1, 2001
Increasing the Steam Pressure Rating of ASME Coded Paper Machine Dryers
A description is not available for this item.

References

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