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Journal articles
Magazine articles
Open Access
Rewet in wet pressing of paper, TAPPI JOURNAL September 2018

Rewet in wet pressing of paper, TAPPI JOURNAL September 2018

Magazine articles
Open Access
Leveraging mill-wide big data sets for process and quality i

Authors: Jianzhong Fu and Peter W. Hart | ABSTRACT: The MWV mill in Covington, VA, USA, experienced a long term trend of increasing episodes of paper indents that resulted in significant quantities of internal rejects and production downtime. When traditional troubleshooting techniques failed to resolve the problem, big data analysis techniques were employed to help deter-mine root causes of this negative and increasingly frequent situation. Nearly 6000 operating variables were selected for a deep dive, multi-year analysis after reviewing mill-wide process logs and 60000+ PI tags (data points) collected from one of the major data historian systems at the MWV Covington mill. Nine billion data points were collected from November 2011 to August 2014. Strategies and methods were developed to format, clean, classify, and sort the various data sets to compensate for process lag time and to align timestamps, as well as to rank potential causes or indicators. GE Intelligent Platforms software was employed to develop decision trees for root cause analysis. Insights and possible correlations that were previously invisible or ignored were obtained across the mill, from pulp-ing, bleaching, and chemical recovery to the papermaking process. Several findings led the mill to revise selected process targets and to reconsider a step change in the drying process. These changes have exhibited significant impacts on the mill’s product quality, cost, and market performance. Mill-wide communications of the identified results helped transform the findings into executable actions. Several projects were initiated.

Magazine articles
Open Access
Editor's Note: Jim Atkins: Technology, training & transition

Editor's Note: Jim Atkins: Technology, training & transition, TAPPI JOURNAL September 2011

Journal articles
Magazine articles
Open Access
Editor's Note: An Ideal Raw Material for Pulp and Paper, TAP

Editor's Note: An Ideal Raw Material for Pulp and Paper, TAPPI JOURNAL March 2010

Magazine articles
Open Access
Editor's Note: Positive prospects for coated products, TAPPI

Editor's Note: Positive prospects for coated products, TAPPI JOURNAL May 2010

Magazine articles
Open Access
Editor's Note: Bright future for coating at ACFS, TAPPI JOUR

Editor's Note: Bright future for coating at ACFS, TAPPI JOURNAL November 2010

Magazine articles
Open Access
A financial analysis of north american pulp and paper companies, TAPPI JOURNAL, July 2000, Vol. 83(7)

A financial analysis of north american pulp and paper companies, TAPPI JOURNAL, July 2000, Vol. 83(7)

Magazine articles
Open Access
Environmental issues continue to be a major industry concern, TAPPI JOURNAL, September 2000, Vol. 83(9)

Environmental issues continue to be a major industry concern, TAPPI JOURNAL, September 2000, Vol. 83(9)

Magazine articles
Open Access
Taiwan holds first symposium on environmentally friendly and emerging technologies for a sustainable industry, TAPPI JOURNAL, September 2000, Vol. 83(9)

Taiwan holds first symposium on environmentally friendly and emerging technologies for a sustainable industry, TAPPI JOURNAL, September 2000, Vol. 83(9)

Magazine articles
Open Access
The r & t system: everyone is responsible for innovation, TAPPI JOURNAL, September 2000, Vol. 83(9)

The r & t system: everyone is responsible for innovation, TAPPI JOURNAL, September 2000, Vol. 83(9)

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