Canadian Forest Service Publications
Evaluation of in-woods chipping options for beetle-killed lodgepole pine wood. 2006. Bicho, P.; Hussein, A.; Yuen, B.; Gee, W.; Johal, S. Natural Resources Canada, Canadian Forest Service, Pacific Forestry Centre, Victoria, BC. Mountain Pine Beetle Initiative Working Paper 2006-19. 32 p.
Available from: Pacific Forestry Centre
Catalog ID: 26719
The impact of using a portable in-woods chipper (Peterson DDC 5000) to chip red- and grey-stage mountain pine beetle-infested lodgepole pine (Pinus contorta) was determined from the perspective of chip quality, pulping (thermomechanical [TMP] and kraft) and pulp quality. In addition, the costs of chipping were determined and compared. Chips made by the Peterson DDC 5000 were of acceptable quality for both TMP and kraft pulping. Differences noted in the pulping and refining, albeit minor, could be linked to chip quality. Chip quality, in turn, was affected as much by seasonal chipping conditions as by wood quality. The chips made from portable in-woods chippers would be too expensive in the current chip market to be attractive to the British Columbia pulp industry or for export. Also of note was the lack of hog fuel generated by the chipper. This was due to the loss of bark in the advanced grey stage wood. Recommendations for future work include a means of assessing checking on standing timber, an assessment of bark remaining on standing timber, and optimization of chip-size distributions for mountain pine beetle.