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4-23. In-place wood pole treatment above ground.

Whenever wood poles, crossarms, or other pieces are cut or drilled, the freshly exposed wood should be given a preservative treatment immediately to prevent the entrance of fungi and insects to the inner wood area where treatment may not extend.

a. Treatment. An approved preservative should be used in accordance with AWPA recommended practices. It is recommended that a ready-to-use solution be purchased. Buying the proper formula­tion from a reliable supplier reduces the chances for error in mixing; eliminates the need for mixing equipment; establishes uniformity; and ensures that the preservative meets environmental direc­tives. Test holes, and holes that are not to be used immediately, should be plugged at both ends with treated plugs as shown in figure 4-6.

b. Safety precautions. Treatment solutions can be irritating or harmful to skin and eyes. Full care must be exercised to prevent contact of any part of the body with spray or fumes from the solution. In addition to solvent-resistant gloves, boots, and clothing, a face shield should be worn to protect the eyes and face from any of the solution that may be splashed or blown toward the operator.

c. Treatment of pole top. Clean out all decayed wood. If heart rot is present, remove it to a depth of a foot (0.3 meters) or more.

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