En août 1988, la compagnie Kruger Inc. demanda d'effectuer des études de faisabilité pour mettre au point une méthode d'échantillonnage des copeaux de bois des remorques à ciel ouvert avant le déchargement.
When hauling wood chips in winter, frozen loads can create costs that are rarely included in the haul rates; these include downtime, lost payload capacity, and hours of manual labor to remove the chips. Contractors have tried many methods to solve the problem, and most have arrived at acceptable solutions. FERIC has spent the past two winters working with contractors in northwestern Ontario to identify their "best practices" and test additional solutions. This report summarizes these best practices and new preventative practices identified during FERIC's study.
In the southern interior of British Columbia, the Forest Engineering Research Institute of Canada (FERIC) carried out a study to determine the costs and productivities of producing sawlogs and pulp logs from undersized stems. The small logs were recovered by either roadside or cut-to-length harvesting.
The Canadian forest industry has been using in-woods delimbing, debarking and chipping to convert small-diameter stems to chips for pulp mills. The object of the trial was to asses the machine's ability to sort sample batches of chips with known bark contents.
In Canada, raw forest products are generally transported by vehicles designed to handle either wood chips or logs, and therefore the vehicles carry a payload during only half of their operating hours. In western Canada, several forest operators have identified haul routes where a vehicle capable of hauling both chips and logs could be productive on both legs of a round trip. The Forest Engineering Research Institute of Canada (FERIC) co-ordinated the design and deployment of an 8-axle B-train vehicle having dual commodity capabilities, and monitored its operation during the first eight months of 2001. This report describes key features of the trailers and the operation, and presents an economic analysis.
FERIC's trials demonstrated that the Troxlerr DMG 4302 nuclearr probe permits rapid and accurate measurement of the moisture content of wood chips. In addition, it can be used year-round, either independently or integrated within an automated sampling system.