14-27: AEP’s Experience with Failure Modes in FRP Cooling Towers General

14-27: AEP’s Experience with Failure Modes in FRP Cooling Towers GeneralThe intent of this paper is to share information on how pultruded fiberglass members can fail or be structurally compromised. Failed or cracked fiberglass columns were found in five towers during construction or after 18 months of operation. The failed or cracked columns were attributed to misuse of fiberglass bearing pads or poor construction procedures. Several failed columns and horizontal members were also damaged from ice. Surface blisters were

has not been a problem in Texas

Part III - Appendix: example evaluation of mechanical draft cooling tower

This participation of soluble silica in the development of heat-resistant films occurred at circulating water silica contents below 75 ppm

These containment losses occur because the retaining vessel materials of construction

But the cold-water outlet being common for the entire tower it has been very difficult to devise a method wherein a cell can be isolated from the tower and thermally tested

For this reason larger projects are requiring more back-to-back cooling tower configurations

is from the general corrosion of the condenser tube

understanding and predicting thermal performance impacts when less than ideal clearances are available becomes more complex

and (5) Chemical Factors

are used to project a life expectancy of the tower at a given level of probability

will also be discussed

Grades of Douglas Fir Lumber: recommended stress and non-framework grades and grading rules in application of WCLA grades and Design Data: allowable design stresses (wet operating weight)