It also does not include diesel generators, which are not boiler units. Logs transported and stored in salt water take up chlorine into the bark. The bark is stripped from logs and ground up with other waste wood to produce hog fuel. The material is then used as boiler fuel to produce heat and electrical energy for pulp and paper processes. The boiler recovers chemical products from the combusted black liquor, which are later recycled, and also produces steam which is used in mill process operations.
Wood preservation means the preservation of wood using heat or pressure treatment, or both.
Refer to Chapter 5 of the Supplementary Guide . If selected, field A11.2.e Wood Preservation, will be automatically selected.