TAPPI TIP 0402-16:2015

TAPPI TIP 0402-16:2015

Guidelines for inspection and nondestructive testing of cast iron paper machine dryers

€52.00

Details

This Technical Information Paper (TIP) provides guidelines for inspecting cylindrical, steam-heated pressure
vessels made from gray cast iron (GCI) and used as rotating dryers in papermaking. These guidelines also apply to
unheated GCI cylinders of the same construction. Large Yankee dryers typically used on tissue machines are not
addressed in this TIP.

These guidelines are limited to inspection of the dryer pressure vessels themselves. Inspection of related
steam and condensate piping, relief valves, bearings and gears, and doctoring devices is not directly covered.
Nevertheless, the inspector should report unusual symptoms and conditions in those components and include that
information in the inspection findings as soon as they are detected, in order to prioritize the suspect dryers for
detailed inspection at the earliest opportunity in the "out of operation" mode (i.e., during a dryer shutdown).

Additional Info

Author Technical Association of the Pulp and Paper Industry
Published by TAPPI
Document type Standard
Theme /subgroups/9482
ICS 85.060 : Paper and board
Number of pages 11
Replace TAPPI TIP 0402-16,TAPPI TIP0402-16
Keyword TAPPI TIP 0402-16