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Magazine articles
Inside ctapi, TAPPI JOURNAL, May 1996, Vol. 79(5)
Inside ctapi, TAPPI JOURNAL, May 1996, Vol. 79(5)
Magazine articles
Suzhou papyrus paper readies 100,000 ton coated fine paper mill, TAPPI JOURNAL, May 1996, Vol. 79(5)
Suzhou papyrus paper readies 100,000 ton coated fine paper mill, TAPPI JOURNAL, May 1996, Vol. 79(5)
Magazine articles
Cedar river's linerboard machine inaugurated, TAPPI JOURNAL, November 1996, Vol. 79(11)
Cedar river's linerboard machine inaugurated, TAPPI JOURNAL, November 1996, Vol. 79(11)
Magazine articles
Building a team: the cedar river project, TAPPI JOURNAL, November 1996, Vol. 79(11)
Building a team: the cedar river project, TAPPI JOURNAL, November 1996, Vol. 79(11)
Magazine articles
The effect of h2o on acidic sulfate corrosion in kraft recovery boilers, TAPPI JOURNAL, November 1996, Vol. 79(11)
The effect of h2o on acidic sulfate corrosion in kraft recovery boilers, TAPPI JOURNAL, November 1996, Vol. 79(11)
Magazine articles
The role of the production manager, TAPPI JOURNAL, November 1996, Vol. 79(11)
The role of the production manager, TAPPI JOURNAL, November 1996, Vol. 79(11)
Magazine articles
Vision of the future, TAPPI JOURNAL, November 1996, Vol. 79(11)
Vision of the future, TAPPI JOURNAL, November 1996, Vol. 79(11)
Magazine articles
Cedar river paper co. celebrates success of no. 2 linerboard machine, TAPPI JOURNAL, November 1996, Vol. 79(11)
Cedar river paper co. celebrates success of no. 2 linerboard machine, TAPPI JOURNAL, November 1996, Vol. 79(11)
Magazine articles
Corrosion and protection of kraft digesters, TAPPI JOURNAL, October 1996, Vol. 79(10)
Corrosion and protection of kraft digesters, TAPPI JOURNAL, October 1996, Vol. 79(10)
Journal articles
Magazine articles
Continuous digester process safety improvements • Stress corrosion cracking and overpressure protection lessons learned and opportunities, TAPPI Journal October 2024
ABSTRACT: Georgia-Pacific has recent experience with continuous digester stress corrosion cracking (SCC) repairs where the extent of SCC was more than previous spot inspections had predicted (one digester had anodic protection, one did not). This paper offers case studies of reviewed and improved digester inspections by use of “boat” samples to quantify the depth of cracking mechanism. Boat sample test data is used to support repair recommendations based on hardness testing. Georgia-Pacific also reviewed overpressure protection systems and corrected gaps found in these systems. These included updating to the latest original equipment manufacturer (OEM) designs and formalizing functional testing procedures and practices. This review of digester inspection, testing, and repairs since 2020 provides: (1) a basis for including a 3rd party corrosion expert to be a part of inspections; (2) removes the use of power-wire brushes; (3) enhances digester inspection with 100% phased-array ultrasonic testing to detect SCC; and (4) ensures overpressure protection design and testing is aligned with corporate needs and the site-specific challenges.