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TAPPI TIP 0402-27

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TAPPI TIP 0402-27 Guidelines for Iing Continuous Digesters and Impregnation Vessels

standard by Technical Association of the Pulp and Paper Industry, 09/30/2015

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This Technical Information Paper (TIP) provides guidelines for inspecting digester vessels in alkaline pulping service. Digester vessel refers to a continuous digester or an impregnation vessel in one- and two-vessel systems. These guidelines and procedures also apply to level tanks.

This TIP covers inspection of the code-defined pressure-containing 'envelope' and of internal parts, including screens and their support structure, the center-pipe and its supports and the bottom outlet device/scraper. The TIP discusses preparing for inspection, inspecting the shell and nozzles for cracking and corrosion, inspecting internal components, and how to record the inspection findings and data. The TIP does not cover inspection of M

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Published: 09/30/2015 Number of Pages: 9File Size: 1 file , 100 KB