Spontaneous combustion of hog piles can result in inventory losses and potential damage to surrounding infrastructure and equipment. In April and June 2016, FPInnovations and Terminal Forest Product Ltd. conducted a study to investigate the use of thermal infra-red digital cameras to examine the thermal dynamics of a coastal hog fuel pile. They also investigated the feasibility of using thermal imaging to help develop better fire risk mitigation solutions.
The Forest Engineering Research Institute of Canada (FERIC) undertook a project for Natural Resources Canada (NRCan) to study the transportation of hog fuel from source to consumption site. In particular, FERIC gathered information from companies engaged in the supply, transportation, or use of hog fuel through direct visits or questionnaires. This report presents the types and costs of the various modes of transportation used—specifically truck, rail, and barge—and the advantages and disadvantages of each.
Wood residues that accumulate as sortyard debris have traditionally been burned as waste on-site or landfilled. However, changing environmental or societal expectations mean these options are now unavailable for many areas. Processing the residues into usable products requires machinery and the consumption of fossil fuels, which add to the disposal cost and the amount of carbon dioxide emitted into the atmosphere. This report compares the fuel consumption, carbon balance, and cost of four methods for disposing of sortyard debris.
During the spring and summer of 1995, FERIC observed a series of tests aimed at reclaiming log sortyard residues and processing them as hog fuel for power boilers. These tests were conducted by MacMillan Bloedel Limited in the Port Alberni area on Vancouver Island. The equipment used in the tests consisted of excavators, a portable trommel, a metal detector/rock-picking conveyor belt, a portable hog and a crawler tractor. This report presents data on material composition, productivities and costs of the different treatments, and product analyses.
Information on portable hogs and grinders that have potential application in the processing of wood-waste materials generated by logging, at central processing facilities, and in logyard storage areas was collected.
The Forest Engineering Research Institute of Canada (FERIC) and Alberta-Pacific Forest Industries Inc. examined the feasibility of recovering logging slash and converting it to power boiler fuel (hog fuel). This report presents hogging productivity and costs, hog delivery costs, hog fuel quality, and cost comparisons with natural gas.
The Forest Engineering Research Institute of Canada (FERIC), in cooperation with Tembec Industries Inc., performed two case studies in southwestern British Columbia. The first case study examined the feasibility of converting harvesting residues into chunks for producing hog fuel, and collecting and hauling roadside residues for producing pulp chips and hog fuel. The second case study evaluated the feasibility of recovering sawmilling residues for pulp chip and hog fuel production. In each study, FERIC determined system productivities and costs, and assessed the quality of the furnish produced.
Contamination of hog fuel along the supply chain was observed at Skookumchuk. FPInnovations recommends that the number of times hog fuel is moved be minimized, that operators be trained in correct handling procedures, that a penalty/reward system be instituted to habituate proper handling procedures, that cross logs be used beneath log decks, that hog fuel storage surfaces be paved or frozen, and that hog fuel produced in the field be ground directly into chip vans.
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The Simco-Ramic Pulpwood Sorter was tested for its ability to extract bark-free pulpwood chips from in-woods chips containing known amounts of bark and other debris. Four types of input furnish were tested: full-tree hardwood chips, tree-length softwood chips, full-tree softwood chips and hardwood chips from a chain-flail delimber-debarker-chipper. The test results are documented in terms of the proportions of accepted chips and of hog fuel as a function of total input, and a sorting cost per green metric tonne in estimated.