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Section <br />3.0 <br />3.0 RECOMMENDATIONS <br /> <br />The photographs referred to in this section are in Appendix A. All drawings are found <br />in Appendix B. The surface preparation requirements for all repairs as well as the <br />requirements for welding are described in Appendix C. <br /> <br />Based on an evaluation of the inspection data, the recommendations are: <br /> <br />3.1 Interior Wet <br />Structural <br />3.1.1 <br />Install a ladder to the exterior of the drywell tube with a 60’ retractable safety <br />climb system. See photo 2. <br /> <br />Seal weld on the interior of the vent and inlet/outlet pipe a 2” x 3-inch Stainless Steel <br />plate with threaded bolt hole. This plate will be used for Low-Voltage Holiday Testing <br /> <br />3.2 Interior Wet <br />Coating <br />3.2.1 <br />The coating Dry Film Thickness (DFT) on the interior wet surfaces is from 14.6 to 32 <br />mils with average of 17.0 mils DFT. <br /> <br />The interior coating is in fair to good condition. The coating is now 10 years old and <br />because of age is considered repairable. The interior wet coating should be spot <br />repaired within the next 1 to 2 years. See photos 3 through 12. <br /> <br />There are coating failures on the following surfaces: <br />Roof over lapped plate seams and rafter, approximately 20%. <br />Painter’s T-Rails, approximately 30%. <br />Top shell course, ice damage has caused an approximate 4-foot wide area on the shell. <br />Drywell tube, an approximate 5-foot band around the tube located around <br />30’ from the floor, the damage is due to ice. On the remaining surfaces of the <br />interior coating system there are approximately 200 coating failures. <br />The defective areas (rusted spots) should be spot blasted and the coating with a <br />zinc primer and a 2-coat epoxy coating system. <br /> <br /> <br /> <br />3.3 Cathodic <br />Protection (C .P.) <br />System <br />3.3.1 <br />Currently the tower does not have a cathodic protection (C.P.) system inside this <br />tower. It is always an option to install a new system but BSI believes that with proper <br />inspection during the preparation and coating application, a warranty inspection <br />along with periodic tower inspections every four to five years, that it is unnecessary <br />for the to install a C.P. system inside the tower. <br /> <br /> <br /> <br />7